Date Geyser Time Interval Duration Preplay Height Prediction Bar.press. 1/1/1981 Old Faithful 9:04 2:12 1/1/1981 Old Faithful 9:52 0:48 ~4:26 9:57 1/1/1981 Old Faithful 11:21 1:29 1:58 11:07 11:09 1/1/1981 Old Faithful 12:13p 0:52 ~4:32 12:11 1/1/1981 Old Faithful 13:34p 1:21 4:43? 13:30 1/1/1981 Old Faithful 14:38p 1:04 ~3:56 14:52 1/1/1981 Old Faithful 16:05p 1:27 2:07 15:56 15:50 Sndn 16:26 1/1/1981 Old Faithful 16:51p 0:46 4:43 16:46 16:58 1/1/1981 Beehive 14:10 VR 1/1/1981 Castle 10:28 steam 1/1/1981 Grand 16:27 ie 4B 1/1/1981 Plume 16:57 1/1/1981 Riverside 12:58 VR 1/2/1981 Old Faithful 9:18 2:12 1/2/1981 Old Faithful 10:12 0:54 ~4:00 10:01 10:11 1/2/1981 Old Faithful 11:36 1:24 1:45 11:25 11:24 1/2/1981 Old Faithful 12:31 0:55 4:33 12:21 12:26 1/2/1981 Old Faithful 13:59 1:28 4:15 13:58 13:48 1/2/1981 Old Faithful 15:26 1:27 2:03 15:09 15:13 1/2/1981 Old Faithful 16:06 0:40 long 16:17 Sndn 16:26 1/2/1981 Old Faithful 17:19 1:13 4:05 none 17:28 1/2/1981 Beehive ~15:05 VR 1/2/1981 Castle 14:25 VR start 1/2/1981 Castle 14:41 ie 1/2/1981 Daisy 14:55 1/2/1981 Daisy 16:25 VR 1/2/1981 Depression 15:01 ie 1/2/1981 Dome 13:05 active 1/2/1981 Dome 15:30 ie 1/2/1981 Grand 13:13 VR 3B 1/2/1981 Plume 16:59 ie 1/2/1981 Riverside 14:41 ie 1/3/1981 Old Faithful 8:43 short 1/3/1981 Old Faithful 9:47 1:04 4:39 9:39 1/3/1981 Old Faithful 11:02 1:15 4:16 11:02 1/3/1981 Old Faithful 12:18 1:16 4:25 12:16 1/3/1981 Old Faithful 13:41 1:23 2:01 13:33 1/3/1981 Old Faithful 14:32 0:51 ~4:00 14:29 1/3/1981 Old Faithful 15:52 1:20 2:10 15:40 1/3/1981 Old Faithful 16:47 0:55 4:36 16:35 1'11:00 "likely,just after11:00" 1/10/1981 Plume 9:34 1/10/1981 Plume 12:42 1/10/1981 Plume 18:55 1/11/1981 Old Faithful 9:33 ~4:00 1/11/1981 Old Faithful 10:52 1:19 3:51 10:45 10:46 1/11/1981 Old Faithful 12:25 1:33 4:33 11:57 12:05 1/11/1981 Old Faithful 13:39 1:14 2:10 13:39 13:43 1/11/1981 Old Faithful 14:33 0:54 4:32 14:28 14:27 1/11/1981 Old Faithful 15:53 1:20 3:53 15:51 Sndnatcon16:40 1/11/1981 Old Faithful 17:07 1:14 4:10 17:04 1/11/1981 Beehive 13:00 d=4m34s 1/11/1981 Castle 10:38 1/11/1981 Plume 16:02 1/11/1981 Plume 16:37 1/12/1981 Old Faithful 8:52 1:59 8:38 1/12/1981 Old Faithful 9:53 1:01 4:30 9:53 9:53 1/12/1981 Old Faithful 11:13 1:20 4:25 11:08 11:12 1/12/1981 Old Faithful 12:40 1:27 ~4:15 12:31 1/12/1981 Old Faithful 13:58 1:18 2:15 13:57 13:55 1/12/1981 Old Faithful 14:58 1:00 4:04 14:54 14:51 1/12/1981 Old Faithful 16:17 1:19 2:03 16:09 16:12 1/12/1981 Old Faithful 17:11 0:54 4:38 17:08 17:08 1/12/1981 Beehive 12:44 d=4m43s 1/12/1981 Beehive's Indicator 12:40 ie 1/12/1981 Castle 16:39 ie 1/12/1981 Plume 8:42 1/12/1981 Plume 13:36 1/12/1981 Plume 14:46 1/12/1981 Plume 15:20 1/13/1981 Old Faithful 8:46 4:05 8:40 1/13/1981 Old Faithful 9:59 1:13 2:30 9:51 9:59 1/13/1981 Old Faithful 10:47 0:48 ~2:52 long? 10:54 1/13/1981 Old Faithful 12:12 1:25 2:01 12:01 11:47 1/13/1981 Old Faithful 12:59 0:47 ~4:00 13:10 1/13/1981 Old Faithful 14:26 1:27 1:53 14:13 14:16 1/13/1981 Old Faithful 15:38 1:12 4:35 15:11 15:14 1/13/1981 Old Faithful 16:45 1:07 short 16:56 1/13/1981 Beehive 11:14 1/13/1981 Castle 11:59 steam 1/13/1981 Castle 12:15 start 1/13/1981 Lone Star 14:13 VR 1/13/1981 Plume 14:45 1/14/1981 Old Faithful 9:21 ~2:15(fog) 10:14 1/14/1981 Old Faithful 10:41 1:20 2:07 10:24 1/14/1981 Old Faithful 11:45 1:04 4:45 11:29 11:33 1/14/1981 Old Faithful 13:03 1:18 2:13 13:05 1/14/1981 Old Faithful 14:00 0:57 4:36 13:57 13:56 1/14/1981 Old Faithful 15:26 1:26 2:27 15:22 15:28 1/14/1981 Old Faithful 16:18 0:52 4:07 16:21 1/14/1981 Old Faithful 17:41 1:23 3:48 17:34 17:32 1/14/1981 Castle 11:20 steam 1/14/1981 Dome active 1/14/1981 Giantess 10:55 ie start 1/14/1981 Giantess 10:54 helicorder 1/14/1981 Plume 14:25 1/14/1981 Plume 14:53 1/14/1981 Plume 17:27 1/15/1981 Old Faithful 8:54 3:35 1/15/1981 Old Faithful 10:00 1:06 ~4:30 9:59 10:01 1/15/1981 Old Faithful 11:23 1:23 ~2:15 11:13 11:18 1/15/1981 Old Faithful 12:14 0:51 4:48 12:12 12:16 1/15/1981 Old Faithful 13:32 1:18 2:33 13:34 1/15/1981 Old Faithful 14:35 1:03 2:40? 14:29 14:38 1/15/1981 Old Faithful 16:00 1:25 1:49 15:44 15:32 1/15/1981 Old Faithful 16:50 0:50 4:42 16:43 16:48 1/15/1981 Old Faithful 18:19 1:29 2:00 18:10 1/15/1981 Dome 11:22 1/15/1981 Dome 12:07 1/15/1981 Dome 12:52 1/15/1981 Dome 14:27 1/15/1981 Dome 16:29 1/15/1981 Giantess ~10:40 H20 phase 1/15/1981 Giantess 13:21 H20 phase 1/15/1981 North Goggles 12:37 minor 1/15/1981 Plume 11:41 1/15/1981 Plume 12:12 1/15/1981 Plume 12:43 4B 1/15/1981 Plume 13:14 3B 1/15/1981 Plume 13:41 1/15/1981 Plume 14:12 1/15/1981 Plume 15:07 1/15/1981 Plume 15:08 1/15/1981 Plume 15:37 1/15/1981 Plume 16:37 1/16/1981 Old Faithful 9:34 2:17 9:27 1/16/1981 Old Faithful 10:29 0:55 4:28 10:23 1/16/1981 Old Faithful 11:55 1:26 2:04 11:48 11:47 1/16/1981 Old Faithful 12:43 0:48 ~4:15 12:46 1/16/1981 Old Faithful 14:09 1:26 ~1:58 4:02 13:58 1/16/1981 Old Faithful 15:01 0:52 3:29 15:00 1/16/1981 Old Faithful 16:25 1:24 2:03 16:07 Sndnatcon16:45 1/16/1981 Old Faithful 17:23 0:58 4:37 17:12 17:16 1/16/1981 Beehive 17:09 d=5m10s 1/16/1981 Beehive's Indicator 16:55 ie 1/16/1981 Castle 10:58 steam 1/16/1981 Depression 15:34 1/16/1981 Lone Star 13:45 1/16/1981 Plume 9:07 1/16/1981 Plume 11:36 1/16/1981 Plume 13:03 1/16/1981 Plume 14:30 1/16/1981 Plume 15:01 1/16/1981 Plume 15:32 1/16/1981 Plume 16:01 1/16/1981 Plume 16:29 1/16/1981 Plume 16:58 1/16/1981 Tardy 11:39 1/17/1981 Old Faithful 9:16 4:21 AM snow 1/17/1981 Old Faithful 10:37 1:21 1:58 10:27 10:33 1/17/1981 Old Faithful 11:25 0:48 4:29 11:28 1/17/1981 Old Faithful 12:43 1:18 4:16 12:39 12:43 1/17/1981 Old Faithful 14:07 1:26 3:57 13:58 1/17/1981 Old Faithful 15:26 1:17 4:12 15:12 1/17/1981 Old Faithful 16:40 1:14 1:53 16:40 16:41 1/17/1981 Plume 11:08 1/17/1981 Plume 16:15 1/18/1981 Old Faithful 9:41 3:11 1/18/1981 Old Faithful 10:47 1:06 4:46 10:35 10:45 1/18/1981 Old Faithful 12:07 1:20 4:12 11:58 12:07 1/18/1981 Old Faithful 13:17 1:10 ~1:45 13:17 13:22 1/18/1981 Old Faithful 14:17 1:00 4:27 14:11 14:05 1/18/1981 Old Faithful 15:34 1:17 4:11 15:27 15:35 1/18/1981 Old Faithful 16:47 1:13 3:57 16:47 16:49 1/18/1981 Castle 17:10 ie 1/18/1981 Grand 16:20 ie 1/18/1981 Lion 11:05 end 11:12 1/18/1981 Lion 16:33 ie 1/18/1981 Lion 16:50 short interv. 1/18/1981 Plume 10:53 1/18/1981 Plume 12:10 1/18/1981 Plume 14:42 1/19/1981 Old Faithful 9:40 4:06 1/19/1981 Old Faithful 11:05 1:25 2:03 10:53 1/19/1981 Old Faithful 11:47 0:42 4:36 11:47 11:56 1/19/1981 Old Faithful 13:20 1:33 1:53 13:04 13:07 1/19/1981 Old Faithful 13:59 0:39 4:07 14:08 1/19/1981 Old Faithful 15:19 1:20 1:58 15:18 15:12 1/19/1981 Old Faithful 16:16 0:57 4:25 16:10 1/19/1981 Castle 15:27 1/19/1981 Grand 11:05 ie 2B 1/19/1981 Plume 10:39 1/19/1981 Plume 12:00 1/19/1981 Plume 14:54 1/19/1981 Plume 15:29 1/19/1981 Plume 16:36 1/19/1981 Plume 17:13 1/20/1981 Old Faithful 7:19 1/20/1981 Old Faithful 8:40 1:21 2:05 1/20/1981 Old Faithful 9:25 0:45 4:33 9:31 1/20/1981 Old Faithful 10:54 1:27 ~1:40 10:41 10:43 1/20/1981 Old Faithful 11:45 1:21 4:17 11:40 11:42 1/20/1981 Old Faithful 13:01 1:16 1:37 12:59 13:01 1/20/1981 Old Faithful 13:51 0:50 4:24 13:47 13:46 1/20/1981 Old Faithful 15:09 1:18 3:55 15:09 1/20/1981 Old Faithful 16:33 1:24 1:51 16:24 Treetop+2' 16:32 Sndn 16:49 1/20/1981 Old Faithful 17:18 0:45 4:48 <1m 17:22 1/20/1981 Artemisia 11:37 1/20/1981 Castle 13:17 1/20/1981 Daisy 10:00 VR 1/20/1981 Daisy 13:21 1/20/1981 Depression 16:39 1/20/1981 Grand 17:05 ie 2B 1/20/1981 North Grotto Fountain 11:11 1/20/1981 Oblong ~10:58 1/20/1981 Plume 10:31 1/20/1981 Plume 11:11 1/20/1981 South Grotto Fountain 11:15 1/21/1981 Old Faithful 9:47 2:25 1/21/1981 Old Faithful 10:55 1:08 3:48 10:42 1/21/1981 Old Faithful 12:12 1:17 2:15 12:08 12:15 1/21/1981 Old Faithful 13:08 0:56 3:44 13:04 13:05 1/21/1981 Old Faithful 14:26 1:18 1:48 14:22 14:18 1/21/1981 Old Faithful 15:24 0:58 3:47 15:13 15:16 1/21/1981 Old Faithful 16:47 1:23 2:03 16:32 16:34 1/21/1981 Grand 13:51 VR 1/21/1981 Plume 14:55 1/21/1981 Plume 15:30 1/21/1981 Plume 16:06 1/21/1981 Riverside 16:20 VR 1/22/1981 Old Faithful 8:51 ~4:44 1/22/1981 Old Faithful 10:13 1:22 3:17 10:10 10:09 1/22/1981 Old Faithful 11:15 1:02 3:44 11:15 11:17 1/22/1981 Old Faithful 12:29 1:14 4:35 12:24 1/22/1981 Old Faithful 13:47 1:18 4:02 13:47 1/22/1981 Old Faithful 15:01 1:14 1:59 14:59 15:00 1/22/1981 Old Faithful 15:55 0:54 4:16 15:51 15:52 1/22/1981 Aurum 15:05 1/22/1981 Beehive 14:13 1/22/1981 Castle 7:15 steam 1/22/1981 Depression 8:47 1/22/1981 Depression 16:22 1/22/1981 Dome 12:43 1/22/1981 Dome 15:05 1/22/1981 Dome 16:05 1/22/1981 Grotto Fountain 11:47 1/22/1981 Plume 11:37 1/22/1981 Plume 12:52 1/22/1981 Plume 14:30 1/22/1981 Plume 15:06 1/22/1981 Plume 15:41 1/22/1981 Riverside 11:35 1/22/1981 South Grotto Fountain 11:49 1/22/1981 Tilt 9:25 1/23/1981 Old Faithful 8:46 ~3:23 9:55 1/23/1981 Old Faithful 10:10 1:24 3:50 11:21 9:41 1/23/1981 Old Faithful 11:30 1:20 4:14 12:41 11:20 1/23/1981 Old Faithful 12:56 1:26 1:54 12:45 1/23/1981 Old Faithful 13:46 0:50 ~4:15 14:56 13:45 1/23/1981 Old Faithful 15:02 1:16 2:01 15:01 1/23/1981 Old Faithful 15:53 0:51 ~4:15 15:53 1/23/1981 Old Faithful 17:23 1:30 1:55 17:08 1/23/1981 Beehive 11:31 d=5m6s 1/23/1981 Castle 13:51 1/23/1981 Depression 9:10 1/23/1981 Depression 15:05 1/23/1981 Dome 9:08 1/23/1981 Dome 9:43 1/23/1981 Dome 9:XX 1/23/1981 Dome 10:46 1/23/1981 Dome 13:51 1/23/1981 Dome 15:13 1/23/1981 Giantess 13:12 steam phase 1/23/1981 Grand 14:35 1/23/1981 Plume 9:54 1/23/1981 Plume 11:02 1/23/1981 Plume 11:30 1/23/1981 Plume 13:47 1/23/1981 Plume 15:04 1/23/1981 Plume 15:39 1/23/1981 Plume 16:46 1/23/1981 Plume 17:07 1/24/1981 Old Faithful 9:37 ~3:45 1/24/1981 Old Faithful 10:50 1:13 3:37 11:50 10:46 1/24/1981 Old Faithful 12:09 1:17 2:04 11:57 11:57 1/24/1981 Old Faithful 13:06 0:57 4:13 12:56 13:00 1/24/1981 Old Faithful 14:26 1:20 2:34 14:21 14:21 1/24/1981 Old Faithful 15:15 0:49 4:37 15:20 1/24/1981 Old Faithful 16:47 1:32 2:01 16:36 16:34 1/24/1981 Aurum 9:45 1/24/1981 Beehive 12:25 1/24/1981 Dome 15:02 ie 1/24/1981 Giantess 9:08 ie 1/24/1981 Giantess 9:34 1/24/1981 Giantess 10:08 1/24/1981 Lone Star 15:11 VR 1/24/1981 Plume 9:08 1/24/1981 Plume 9:34 1/24/1981 Plume 14:22 1/24/1981 Plume 14:52 1/25/1981 Old Faithful 8:14 4:30 1/25/1981 Old Faithful 9:32 1:18 1:55 9:32 9:32 1/25/1981 Old Faithful 10:39 1:07 4:32 10:21 10:22 1/25/1981 Old Faithful 11:53 1:14 short 11:57 1/25/1981 Old Faithful 12:48 0:55 4:49 12:41 12:44 1/25/1981 Old Faithful 14:14 1:26 2:11 14:10 14:03 1/25/1981 Old Faithful 15:09 0:55 4:21 15:03 15:07 1/25/1981 Old Faithful 16:31 1:22 1:58 16:23 16:25 1/25/1981 Beehive 12:33 1/25/1981 Castle 16:04 ieVR 1/25/1981 Lone Star 9:15 VR 1/25/1981 Lone Star 12:04 1/25/1981 Plume 9:00 1/25/1981 Plume 10:53 1/25/1981 Plume 11:25 1/25/1981 Plume 11:52 1/25/1981 Plume 12:58 1/25/1981 Plume 13:17 1/25/1981 Plume 14:15 1/25/1981 Plume 14:55 VR 1/25/1981 Plume 15:17 1/26/1981 Old Faithful 7:37 3:42 1/26/1981 Old Faithful 9:06 1:29 1:51 9:00 1/26/1981 Old Faithful 10:00 0:54 4:22 9:50 9:55 1/26/1981 Old Faithful 11:18 1:18 2:53 11:17 11:17 1/26/1981 Old Faithful 12:18 1:00 4:23 12:15 12:18 1/26/1981 Old Faithful 13:34 1:16 4:22 13:30 13:35 1/26/1981 Old Faithful 14:42 1:08 4:25 14:42 14:51 1/26/1981 Old Faithful 16:00 1:18 ~3:45 16:00 1/26/1981 Old Faithful 17:19 1:19 2:16 17:07 17:09 1/26/1981 Old Faithful 18:16 0:57 4:27 18:12 1/26/1981 Castle 12:15 start 1/26/1981 Lion 10:23 1/26/1981 Plume 11:00 4B 1/26/1981 Plume 12:56 1/26/1981 Plume 16:36 1/27/1981 Old Faithful 7:36 4:02 1/27/1981 Old Faithful 8:40 1:04 4:40 8:45 1/27/1981 Old Faithful 10:00 1:20 4:14 9:53 10:00 1/27/1981 Old Faithful 11:10 1:10 3:09 11:21 11:15 1/27/1981 Old Faithful 12:34 1:24 4:14 12:31 12:24 1/27/1981 Old Faithful 13:44 1:10 4:06 13:49 1/27/1981 Old Faithful 15:04 1:20 2:46 14:59 14:59 1/27/1981 Old Faithful 16:12 1:08 4:31 16:01 16:02 1/27/1981 Beehive 10:20 1/27/1981 Castle 11:30 VR water 1/27/1981 Depression 16:16 1/28/1981 Old Faithful 8:47 ~3:45 1/28/1981 Old Faithful 10:11 1:24 1:50 9:56 1/28/1981 Old Faithful 11:06 0:55 4:33 10:56 11:00 1/28/1981 Old Faithful 12:27 1:21 4:01 12:21 12:24 1/28/1981 Old Faithful 13:47 1:20 4:03 13:34 13:39 1/28/1981 Old Faithful 14:59 1:12 3:06 15:00 1/28/1981 Old Faithful 16:00 1:01 4:38 15:51 16:03 1/28/1981 Castle 14:55 1/28/1981 Depression 10:34 1/28/1981 Grand 11:15 ieVR 1/28/1981 Plume 14:55 1/28/1981 Plume 15:14 1/29/1981 Old Faithful 7:52 ~3:50 1/29/1981 Old Faithful 9:14 1:22 4:16 9:04 9:00 1/29/1981 Old Faithful 10:30 1:16 4:12 10:21 10:29 1/29/1981 Old Faithful 11:47 1:17 1:48 11:45 1/29/1981 Old Faithful 12:33 0:46 4:34 12:32 12:35 1/29/1981 Old Faithful 14:01 1:28 2:04 13:56 13:51 1/29/1981 Old Faithful 14:55 0:54 4:21 15:50 14:52 1/29/1981 Old Faithful 16:12 1:17 3:53 16:05 16:12 1/29/1981 Castle 14:22 ie 1/29/1981 Depression 15:05 1/29/1981 Grand 17:30 ie 1/29/1981 Plume 11:02 1/29/1981 Plume 13:06 1/29/1981 Plume 13:59 1/29/1981 Plume 14:45 1/29/1981 Plume 16:39 1/29/1981 Sawmill 8:24 1/29/1981 Tardy 17:38 VR 1/30/1981 Old Faithful 9:43 ~3m46s 1/30/1981 Old Faithful ~10:40 long 10:52 1/30/1981 Old Faithful 11:56 2:06 11:48 11:53 1/30/1981 Old Faithful 12:52 0:56 4:39 12:50 12:47 1/30/1981 Old Faithful 14:13 1:21 ~2:40 cloudy 14:09 14:11 1/30/1981 Old Faithful 15:09 0:56 4:45 ~14:59 15:01 1/30/1981 Old Faithful 16:31 1:22 4:00 16:24 16:29 1/30/1981 Plume 16:31 1/31/1981 Old Faithful 7:29 3:44 1/31/1981 Old Faithful 8:45 1:16 1:54 8:38 1/31/1981 Old Faithful 9:35 0:50 4:46 9:35 1/31/1981 Old Faithful 10:49 1:14 ~4:30 10:49 10:55 1/31/1981 Old Faithful 12:08 1:19 2:30 11:56 12:07 1/31/1981 Old Faithful 13:18 1:10 5:07 13:00 13:03 1/31/1981 Old Faithful 14:32 1:14 2:02 14:32 14:40 1/31/1981 Old Faithful 15:38 1:06 4:59 15:23 15:21 1/31/1981 Old Faithful 16:58 1:20 1:49 16:55 16:58 1/31/1981 Old Faithful 17:53 0:55 4:29 17:46 17:47 1/31/1981 Beehive 8:55 1/31/1981 Castle 17:30 ie 1/31/1981 Daisy 11:35 1/31/1981 Plume 8:46 1/31/1981 Plume 10:02 1/31/1981 Plume 10:38 1/31/1981 Plume 11:52 1/31/1981 Plume 15:42 1/31/1981 Old Tardy 11:45 1/31/1981 Riverside 15:39 VR 1/31/1981 Tilt 11:52 2/1/1981 Old Faithful 9:23 ~4:20 9:23 2/1/1981 Old Faithful 10:41 1:18 3:27 10:38 10:38 2/1/1981 Old Faithful 11:48 1:07 4:33 11:42 11:47 2/1/1981 Old Faithful 13:09 1:21 4:24 13:02 13:06 2/1/1981 Old Faithful 14:17 1:08 4:08 14:17 14:25 2/1/1981 Old Faithful 15:40 1:23 4:18 15:28 15:32 2/1/1981 Old Faithful 17:06 1:26 2:19 16:48 16:55 2/1/1981 Old Faithful 18:01 0:55 4:39 17:45 17:59 2/1/1981 Old Faithful 19:22 1:21 2:16 19:21 2/1/1981 Old Faithful 20:18 0:56 4:44 2/1/1981 Beehive 13:52 2/1/1981 Castle 14:43 ie 2/1/1981 Depression 14:26 2/1/1981 Grand 13:07 ie 2/1/1981 Plume 10:50 2/1/1981 Plume 11:23 2/1/1981 Plume 15:31 2/1/1981 Riverside 11:18 ie 2/2/1981 Old Faithful 9:19 4:20 9:17 2/2/1981 Old Faithful 10:30 1:11 4:18 10:28 10:36 2/2/1981 Old Faithful 11:50 1:20 2:06 11:44 11:45 2/2/1981 Old Faithful 12:47 0:57 4:45 12:41 12:41 2/2/1981 Old Faithful 14:05 1:18 1:56 14:01 14:07 2/2/1981 Old Faithful 15:07 1:02 4:44 14:52 14:56 2/2/1981 Old Faithful 16:34 1:17 2:00 16:24 16:27 2/2/1981 Old Faithful 17:23 0:49 4:32 17:25 2/2/1981 Beehive 13:15 d=4m36s 2/2/1981 Beehive's Indicator 13:02 2/2/1981 Castle 16:33 ie 2/2/1981 Grand 10:10 ie 2/2/1981 Grand 14:22 2/2/1981 Plume 11:19 2/2/1981 Plume 13:08 2/2/1981 Plume 15:42 2/2/1981 Plume 16:23 2/3/1981 Old Faithful 7:39 short 7:38 2/3/1981 Old Faithful 8:32 0:53 4:37 8:29 2/3/1981 Old Faithful 9:51 1:19 3:55? 9:44 9:51 2/3/1981 Old Faithful 11:10 1:19 3:59 10:59 11:04 2/3/1981 Old Faithful 12:22 1:12 2:16 12:15 12:24 2/3/1981 Old Faithful 13:19 0:57 4:38 13:11 13:17 2/3/1981 Old Faithful 14:39 1:20 3:56 14:38 2/3/1981 Old Faithful 15:58 1:19 1:59 15:52 2/3/1981 Old Faithful 16:56 0:58 4:41 16:44 16:50 2/3/1981 Beehive 13:18 2/3/1981 Depression 11:02 2/3/1981 Grand 15:26 2/3/1981 Grotto 12:58? VR 2/3/1981 Plume 11:48 2/3/1981 Plume 13:16 2/3/1981 Plume 14:27 2/3/1981 Plume 15:36 2/4/1981 Old Faithful 8:34 4:42 8:26 2/4/1981 Old Faithful 9:59 1:25 2:04 9:51 9:54 2/4/1981 Old Faithful 10:47 0:48 ~4:30 10:46 10:51 2/4/1981 Old Faithful 12:12 1:25 4:25 12:04 12:04 2/4/1981 Old Faithful 13:24 1:12 1:59 13:29 2/4/1981 Old Faithful 14:25 1:01 4:23 14:16 14:16 2/4/1981 Old Faithful 15:49 1:24 1:56 15:44 15:42 Snup 8:02 2/4/1981 Old Faithful 16:41 0:52 4:34 16:33 16:40 2/4/1981 Beehive 14:31 2/4/1981 Castle ~16:00 ie water 2/4/1981 Dome 13:07 2/4/1981 Dome 14:08 2/4/1981 Giantess 3:00 ie 2/4/1981 Giantess 11:46 2/4/1981 Grand 16:00 start 2/4/1981 Grand 16:12 2/4/1981 Lone Star 12:00 2/4/1981 Plume 7:58 2/4/1981 Plume 8:29 2/4/1981 Plume 9:01 2/4/1981 Plume 9:32 2/4/1981 Plume 10:04 2/4/1981 Plume 11:04 2/4/1981 Plume 11:36 2/4/1981 Plume 13:08 2/4/1981 Plume 14:10 2/4/1981 Plume 16:36 2/4/1981 Riverside 9:05 VR 2/4/1981 Riverside 15:25 VR 2/4/1981 Vault 11:46 2/5/1981 Old Faithful ~8:06 2/5/1981 Old Faithful 10:15 3:42 10:10 2/5/1981 Old Faithful 11:29 1:14 2:08 11:24 2/5/1981 Old Faithful 12:22 0:53 4:40 12:18 12:22 2/5/1981 Old Faithful 13:44 1:22 1:55 13:43 13:42 2/5/1981 Old Faithful 14:32 0:48 3:53 14:31 14:35 2/5/1981 Old Faithful 15:58 1:26 2:06 15:44 2/5/1981 Old Faithful 16:49 0:51 4:03 16:47 16:51 2/5/1981 Aurum 15:35 2/5/1981 Beehive 16:35 2/5/1981 Beehive's Indicator 16:33 2/5/1981 Castle 11:09 VR? 2/5/1981 Daisy 14:35 2/5/1981 Dome 14:40 2/5/1981 Plume 7:58 2/5/1981 Plume 9:59 2/5/1981 Plume 11:52 2/5/1981 Plume 14:49 2/5/1981 Plume 15:19 2/5/1981 Plume 15:48 2/5/1981 Plume 16:47 2/6/1981 Old Faithful 9:14 4:48 9:04 2/6/1981 Old Faithful 10:36 1:22 ~4:15 10:34 2/6/1981 Old Faithful 11:50 1:14 4:14 11:51 2/6/1981 Old Faithful 13:03 1:13 2:24 12:57 13:05 2/6/1981 Old Faithful 13:59 0:56 4:23 13:51 13:58 2/6/1981 Old Faithful 15:20 1:21 4:14 15:16 2/6/1981 Old Faithful 16:38 1:18 2:10 16:31 16:36 2/6/1981 Castle 11:04 2/6/1981 Dome 11:39 2/6/1981 Plume 16:18 2/7/1981 Old Faithful 8:59 4:34 8:59 2/7/1981 Old Faithful 10:28 1:29 1:58 10:13 10:16 2/7/1981 Old Faithful 11:17 0:49 4:46 11:08 11:20 2/7/1981 Old Faithful 12:36 1:19 1:58 12:31 12:37 2/7/1981 Old Faithful 13:29 0:53 4:54 13:26 13:28 2/7/1981 Old Faithful 15:07 1:38 1:49 14:48 14:49 2/7/1981 Old Faithful 15:56 0:49 4:56 15:43 15:53 2/7/1981 Old Faithful 17:28 1:32 1:52 17:07 17:18 2/7/1981 Old Faithful 18:27 0:59 4:39 18:10 18:17 2/7/1981 Castle 17:00 ie 2/7/1981 Daisy 13:26 VR 2/7/1981 Daisy 15:14 2/7/1981 Grand 16:25 4B 2/7/1981 Grotto 12:40 2/7/1981 Plume 10:54 2/7/1981 Plume 11:27 2/7/1981 Plume 15:57 2/7/1981 Plume 16:33 2/7/1981 Riverside 14:31 VR 2/7/1981 Sawmill 15:48 2/7/1981 Sawmill 16:51 2/8/1981 Old Faithful 7:29 4:30 2/8/1981 Old Faithful 8:48 1:19 1:50 8:53 2/8/1981 Old Faithful 9:45 0:57 4:16 9:38 9:38 2/8/1981 Old Faithful 11:02 1:17 1:50 10:58 11:01 2/8/1981 Old Faithful 11:49 0:47 4:48 11:49 11:52 2/8/1981 Old Faithful 13:10 1:21 3:55 13:09 13:09 2/8/1981 Old Faithful 14:19 1:09 ~3:57 14:22 2/8/1981 Old Faithful 15:49 1:30 4:14 15:32 >130' 15:32 2/8/1981 Beehive 10:00 2/8/1981 Grand ~15:30 ie 2/8/1981 Lone Star 12:45 VR 2/8/1981 Plume 12:18 2/8/1981 Plume 15:04 2/8/1981 Plume 15:39 2/9/1981 Old Faithful 8:52 4:37 2/9/1981 Old Faithful 10:22 1:30 2:00 10:08 10:10 2/9/1981 Old Faithful 11:18 0:56 4:38 11:08 11:14 2/9/1981 Old Faithful 12:34 1:16 ~2:10 cloudy 12:33 12:37 2/9/1981 Old Faithful 13:29 0:55 ~4:36 13:27 2/9/1981 Old Faithful 14:59 1:30 2:09 14:49 14:47 2/9/1981 Old Faithful 15:54 0:55 4:34 15:51 2/9/1981 Beehive 7:20 2/9/1981 Castle 8:40 2/9/1981 Castle 11:14 VR 2/9/1981 Lion ~15:11 2/9/1981 Plume 15:11 2/10/1981 Old Faithful 8:44 1:48 2/10/1981 Old Faithful 9:31 0:47 long 9:34 2/10/1981 Old Faithful 10:55 1:24 4:20 10:49 10:51 2/10/1981 Old Faithful 12:19 1:24 1:52 12:11 2/10/1981 Old Faithful 13:07 0:48 4:52 13:00 13:09 2/10/1981 Old Faithful 14:34 1:27 1:57 14:27 2/10/1981 Old Faithful 15:26 0:52 4:30 15:20 15:26 O'nite low -47oF 2/10/1981 Old Faithful 16:42 1:16 4:26 16:44 2/10/1981 Castle 9:42 2/10/1981 Lion 9:36 2/10/1981 Plume 10:33 2/10/1981 Plume 12:41 2/10/1981 Plume 14:28 2/10/1981 Plume 15:02 2/10/1981 Plume 16:22 2/11/1981 Old Faithful 8:28 ~4:45 2/11/1981 Old Faithful 9:53 1:25 2:06 9:45 9:48 2/11/1981 Old Faithful 10:47 0:54 4:41 10:33 10:40 2/11/1981 Old Faithful 12:12 1:25 4:13 12:00 12:06 2/11/1981 Old Faithful 13:35 1:23 1:45 13:21 13:28 2/11/1981 Old Faithful 14:30 0:55 4:46 14:22 14:23 2/11/1981 Old Faithful 15:57 1:27 2:07 14:47 15:56 2/11/1981 Old Faithful 16:44 0:47 4:40 16:44 16:49 2/11/1981 Beehive 13:39 2/11/1981 Castle 16:17 2/11/1981 Fan & Mortar 14:40 ie 2/11/1981 Grand 15:20 ie 2/11/1981 Plume 11:10 2/11/1981 Plume 16:06 2/11/1981 Riverside 15:13 2/12/1981 Old Faithful 8:44 ~4:15 2/12/1981 Old Faithful 10:02 1:18 2:06 ~10:00 2/12/1981 Old Faithful 10:56 0:54 4:25 10:55 2/12/1981 Old Faithful 12:19 1:23 1:48 12:10 12:13 2/12/1981 Old Faithful 13:16 0:57 4:04 13:12 13:07 2/12/1981 Old Faithful 14:41 1:25 2:14 14:24 14:30 2/12/1981 Old Faithful 15:39 0:58 4:12 15:33 15:36 2/12/1981 Old Faithful 16:59 1:20 4:33 16:58 2/12/1981 Castle 14:00 ie 2/12/1981 Daisy 11:50 VR 2/12/1981 Riverside 11:20 VR 2/13/1981 Old Faithful 9:10 ~3:40 9:06 2/13/1981 Old Faithful 10:32 1:22 1:54 10:20 10:20 2/13/1981 Old Faithful 11:25 0:53 4:42 11:18 11:21 2/13/1981 Old Faithful 12:49 1:24 2:08 12:40 12:44 2/13/1981 Old Faithful 13:34 0:45 ~4:16 13:41 2/13/1981 Old Faithful 14:54 1:20 3:12? 14:49 14:50 2/13/1981 Old Faithful 16:11 1:17 4:10 16:04 15:59 2/13/1981 Old Faithful 17:23 1:12 4:11 17:17 17:25 2/13/1981 Old Faithful 18:38 1:15 4:32 18:39 2/13/1981 Old Faithful 20:06 1:28 1:52 19:55 2/13/1981 Old Faithful 21:02 0:56 20:56 2/13/1981 Aurum 15:29 2/13/1981 Castle 11:23 2/13/1981 Daisy 10:17 VR 2/13/1981 Daisy 13:55 2/13/1981 Depression 15:48 2/13/1981 Grand 13:13 ie 2/13/1981 Plume 14:29 2/13/1981 Plume 14:59 2/13/1981 Plume 15:40 2/13/1981 Plume 17:30 2/13/1981 Riverside 14:00 2/14/1981 Old Faithful 9:50 2:46 9:50 2/14/1981 Old Faithful 10:53 1:03 4:15 10:47 10:49 2/14/1981 Old Faithful 12:11 1:18 4:15 12:07 12:09 2/14/1981 Old Faithful 13:35 1:24 1:52 13:24 13:27 2/14/1981 Old Faithful 14:35 1:00 4:02 14:23 14:25 2/14/1981 Old Faithful 16:06 1:31 1:49 15:49 2/14/1981 Old Faithful 16:58 0:52 4:56 16:53 16:57 2/14/1981 Old Faithful 18:22 1:24 2:31 18:17 2/14/1981 Old Faithful 19:15 0:53 4:52 19:18 2/14/1981 Castle 17:06 2/14/1981 Grand 15:38 "2B,d=10m55s" 2/14/1981 Plume 18:10 2/15/1981 Old Faithful 9:04 ~4:45 2/15/1981 Old Faithful 10:31 1:27 1:54 10:29 2/15/1981 Old Faithful 11:23 0:52 ~4:30 11:16 11:21 2/15/1981 Old Faithful 12:41 1:18 2:05 12:41 2/15/1981 Old Faithful 13:41 1:00 4:19 13:54 2/15/1981 Old Faithful 14:56 1:15 2:01 14:55 14:56 2/15/1981 Old Faithful 15:51 0:55 4:44 15:47 2/15/1981 Daisy 10:57 VR 2/15/1981 Daisy 12:40 VR d=4m30s i=1:03 2/15/1981 Daisy 14:23 ie i=1:03 2/15/1981 Grand 9:45 2/15/1981 Lion 11:12 d=4m11s 2/15/1981 Lion 16:19 2/15/1981 Lone Star 11:10 2/15/1981 Penta 13:15 ie 2/15/1981 Plume 10:54 2/15/1981 Plume 11:34 2/15/1981 Plume 14:39 2/15/1981 Plume 15:19 2/16/1981 Old Faithful 9:44 2:30 9:38 2/16/1981 Old Faithful 10:50 1:06 4:04 10:42 2/16/1981 Old Faithful 12:07 1:17 4:26 12:02 2/16/1981 Old Faithful 13:35 1:28 1:56 13:21 13:19 2/16/1981 Old Faithful 14:31 0:56 4:26 14:21 14:27 2/16/1981 Old Faithful 15:51 1:20 4:08 15:45 15:49 2/16/1981 Castle 12:10 VR 2/16/1981 Dome 13:54 active 2/16/1981 Plume 9:43 2/16/1981 Plume 10:58 2/16/1981 Plume 14:22 2/16/1981 Plume 14:56 2/16/1981 Plume 15:36 2/16/1981 Plume 16:14 2/17/1981 Old Faithful 9:34 2:00 9:27 Disreg.1st2sets 2/17/1981 Old Faithful 10:29 0:55 4:19 10:28 10:26 power failures 2/17/1981 Old Faithful 11:47 1:18 2:07 11:41 11:45 2/17/1981 Old Faithful 12:44 0:57 4:25 12:35 12:40 2/17/1981 Old Faithful 14:04 1:20 3:57 14:01 14:07 2/17/1981 Old Faithful 15:22 1:18 4:07 15:12 15:17 2/17/1981 Old Faithful 16:41 1:19 4:15 16:36 2/17/1981 Depression 5:06 2/17/1981 Dome 11:56 2/17/1981 Dome 12:40 2/17/1981 Dome 14:47 2/17/1981 Dome 17:17 2/17/1981 Plume 11:00 2/17/1981 Plume ~12:01 2/17/1981 Plume 15:51 2/18/1981 Old Faithful 9:22 2:03 2/18/1981 Old Faithful 10:11 0:49 ~4m14s 10:14 2/18/1981 Old Faithful 11:33 1:22 2:05 11:32 11:30 2/18/1981 Old Faithful 12:30 0:57 4:54 12:16 12:25 2/18/1981 Old Faithful 13:54 1:24 1:55 13:47 13:51 2/18/1981 Old Faithful 14:43 0:49 3:43 14:41 14:45 2/18/1981 Old Faithful 16:01 1:18 2:21 15:55 2/18/1981 Old Faithful 16:57 0:56 4:15 16:57 16:57 2/18/1981 Aurum 10:01 2/18/1981 Aurum 15:09 2/18/1981 Castle 2:35? VR 2/18/1981 Grotto 10:00 2/18/1981 Lion 8:51 ie 2/18/1981 Lion 10:45 2/18/1981 Plume 11:10 2/18/1981 Plume 16:12 2/18/1981 Plume 16:40 2/18/1981 Rocket 10:00 2/19/1981 Old Faithful 9:06 3:59 8:55 2/19/1981 Old Faithful 10:29 1:23 1:52 10:17 10:20 2/19/1981 Old Faithful 11:15 0:46 4:44 11:15 11:18 2/19/1981 Old Faithful 12:37 1:22 2:02 12:33 12:35 2/19/1981 Old Faithful 13:28 0:51 4:39 13:24 13:28 2/19/1981 Old Faithful 14:54 1:26 1:48 14:49 14:38 2/19/1981 Old Faithful 15:51 0:57 4:32 15:41 15:43 2/19/1981 Old Faithful 17:13 1:22 4:11 17:09 17:09 2/19/1981 Old Faithful 18:19 1:06 long 18:27 2/19/1981 Beehive 12:42 d~4m45s 2/19/1981 Big Cub active 2/19/1981 Castle 9:47 ie minor? 2/19/1981 Castle 14:15 ie 2/19/1981 Daisy 14:23 2/19/1981 Depression 9:29 2/19/1981 Depression 15:04 2/19/1981 Dome 13:28 ie 2/19/1981 Grand 17:55 1B 2/19/1981 Lion 9:30 ie 2/19/1981 Lioness active 2/19/1981 Lone Star 11:50 2/19/1981 Plume 11:09 2/19/1981 Plume 11:55 2/20/1981 Old Faithful 9:51 4:24 9:45 2/20/1981 Old Faithful 11:10 1:19 2:43 11:03 11:08 2/20/1981 Old Faithful 12:12 1:02 4:32 12:02 12:09 2/20/1981 Old Faithful 13:36 1:24 2:00 13:27 13:29 2/20/1981 Old Faithful 14:31 0:55 4:43 14:28 2/20/1981 Old Faithful 15:54 1:23 1:48 15:48 15:51 2/20/1981 Old Faithful 16:55 1:01 4:44 16:40 16:42 2/20/1981 Old Faithful 18:11 1:16 1:50 18:15 2/20/1981 Old Faithful 19:06 0:55 4:43 2/20/1981 Beehive 12:25 d=4m38s 2/20/1981 Castle 10:40 VR 2/20/1981 Plume 1:22 2/20/1981 Plume 11:47 2/20/1981 Plume 15:30 2/20/1981 Plume 17:10 2/21/1981 Old Faithful 8:02 4:39 7:59 2/21/1981 Old Faithful 9:22 1:20 1:54 9:20 9:22 2/21/1981 Old Faithful 10:11 0:49 4:49 10:11 10:11 2/21/1981 Old Faithful 11:36 1:25 2:00 11:27 11:31 2/21/1981 Old Faithful 13:30 0:54 4:21 12:22 12:28 2/21/1981 Old Faithful 13:59 1:29 2:06 13:44 13:48 2/21/1981 Old Faithful 14:52 0:53 4:48 14:50 14:52 2/21/1981 Old Faithful 16:14 1:22 1:52 16:11 16:12 2/21/1981 Old Faithful 17:04 0:50 4:28 17:04 2/21/1981 Beehive 10:29 2/21/1981 Castle 17:19 ie 2/21/1981 Depression 17:01 2/21/1981 Plume 10:57 2/21/1981 Plume 11:30 2/21/1981 Plume 17:01 2/21/1981 Plume 19:53 2/22/1981 Old Faithful 6:44 4:42 6:33 2/22/1981 Old Faithful 8:04 1:20 2:08 7:53 8:04 2/22/1981 Old Faithful 9:03 0:59 4:39 8:49 8:55 2/22/1981 Old Faithful 10:23 1:20 1:52 10:21 2/22/1981 Old Faithful 11:16 0:53 4:24 11:12 2/22/1981 Old Faithful 11:39 1:23 3:33 11:35 12:34 2/22/1981 Old Faithful 14:02 1:23 1:54 13:42 13:49 2/22/1981 Old Faithful 14:43 0:41 4:25 14:43 14:51 2/22/1981 Old Faithful 16:09 1:26 3:49 16:05 15:58 2/22/1981 Old Faithful 17:23 1:14 2:14 17:14 17:18 2/22/1981 Beehive 6:57 2/22/1981 Castle 15:10 2/22/1981 Daisy 12:08 2/22/1981 Depression 6:57 2/22/1981 Fan & Mortar 14:30 VR steam 2/22/1981 Grand 13:50 VR 2/22/1981 Grand 13:55 ie 2/22/1981 Grotto 15:45 2/22/1981 Plume 7:54 2/22/1981 Plume 8:58 2/22/1981 Plume 14:14 2/22/1981 Plume 14:53 2/22/1981 Plume 15:28 2/22/1981 Plume 16:07 2/22/1981 Plume 16:38 2/22/1981 Plume 17:11 2/22/1981 Plume 17:43 2/23/1981 Old Faithful 7:18 long 2/23/1981 Old Faithful 8:32 1:14 2:15 8:31 8:33 2/23/1981 Old Faithful 9:36 1:04 4:30 9:21 9:26 2/23/1981 Old Faithful 11:01 1:25 1:50 10:50 10:54 2/23/1981 Old Faithful 11:53 0:52 4:34 11:50 11:50 2/23/1981 Old Faithful 13:16 1:23 2:03 13:10 2/23/1981 Old Faithful 14:08 0:52 4:38 14:02 14:08 2/23/1981 Old Faithful 15:25 1:17 ~3:52 15:26 2/23/1981 Old Faithful 16:32 1:07 ~4:00 16:37 2/23/1981 Old Faithful 17:56 1:24 4:37 17:44 2/23/1981 Old Faithful 19:11 1:15 1:58 19:14 2/23/1981 Beehive 21:58 2/23/1981 Beehive "overnite, ice" 2/23/1981 Castle 11:50 ie 2/23/1981 Dome act.early am 2/23/1981 Giantess 17:03 ie stm type to17:30:42 2/23/1981 Giantess 17:39:26 2nd B 2/23/1981 Giantess 17:45 steam 2/23/1981 Grand 9:35 3B 2/23/1981 Grand 17:24 2B 2/23/1981 Plume 10:52 2/23/1981 Plume 15:19 2/23/1981 Plume 15:49 2/23/1981 Plume 16:23 2/23/1981 Plume 17:45 2/23/1981 Plume 18:16 2/23/1981 Riverside 12:08 2/24/1981 Old Faithful 6:04 long 2/24/1981 Old Faithful 7:20 1:16 4:11 7:14 7:19 2/24/1981 Old Faithful 8:30 1:10 4:36 8:29 8:55 2/24/1981 Old Faithful 9:49 1:19 4:19 9:41 9:48 2/24/1981 Old Faithful 10:59 1:10 2:14 10:58 11:04 2/24/1981 Old Faithful 11:51 0:52 4:50 11:56 2/24/1981 Old Faithful 13:20 1:19 1:55 13:11 13:11 2/24/1981 Old Faithful 14:10 0:50 4:34 14:05 14:12 2/24/1981 Old Faithful 15:41 1:31 15:26 15:27 Hi 48oF 2/24/1981 Old Faithful 16:20 0:39 long 16:46 Sunup 7:29 2/24/1981 Old Faithful 17:44 1:24 2:27 17:33 17:35 Sundown 7:39 2/24/1981 Old Faithful 18:38 0:54 4:54 18:34 18:40 2/24/1981 Beehive 11:20 d=4m34s 2/24/1981 Beehive's Indicator 11:08 2/24/1981 Castle 8:10 ie 2/24/1981 Castle 17:15 ie 2/24/1981 Daisy 14:50 2/24/1981 Daisy 18:10 2/24/1981 Dome 11:07 active 2/24/1981 Giantess 8:43 ie "d=15h,48m" 2/24/1981 Grotto 11:08 2/24/1981 Lone Star 12:50 2/24/1981 Grotto Fountain 10:54 2/24/1981 Oblong 17:55 2/24/1981 Plume 8:40 2/24/1981 Plume 9:40 2/24/1981 Plume 11:08 2/24/1981 Plume 11:37 2/24/1981 Plume 13:27 2/24/1981 Plume 14:08 2/24/1981 Plume 15:34 2/24/1981 Plume 16:59 2/24/1981 Plume 17:28 2/24/1981 Rocket 11:08 2/24/1981 South Grotto Fountain 11:01 2/25/1981 Old Faithful 7:44 3:53 7:38 2/25/1981 Old Faithful 8:54 1:10 4:27 8:53 8:56 2/25/1981 Old Faithful 10:14 1:20 4:35 10:12 10:12 2/25/1981 Old Faithful 11:24 1:10 4:56 11:24 2/25/1981 Old Faithful 12:48 1:24 2:12 12:40 12:46 2/25/1981 Old Faithful 13:45 0:57 4:34 13:39 13:42 2/25/1981 Old Faithful 15:02 1:17 3:56 15:03 2/25/1981 Old Faithful 16:15 1:13 2:10 16:14 16:12 2/25/1981 Old Faithful 17:07 0:52 4:45 17:03 17:08 Low =5oF 2/25/1981 Old Faithful 18:29 1:22 2:21 18:27 2/25/1981 Beehive 7:59 d=5m8s 2:27stm 2/25/1981 Beehive 16:47 d=4:58 2/25/1981 Beehive's Indicator 7:45 d=17m55s 2/25/1981 Castle 13:50 2/25/1981 Depression 7:34 2/25/1981 Dome active 2/25/1981 Grand 10:42 2/25/1981 Lion 9:40 active 2/25/1981 Lion 10:39 ie 2/25/1981 Little Cub 9:40 active 2/25/1981 Oblong 8:01 steam 2/25/1981 Plume 7:19 2/25/1981 Plume 7:48 2/25/1981 Plume 8:17 2/25/1981 Plume 8:46 2/25/1981 Plume 9:17 2/25/1981 Plume 9:48 2/26/1981 Old Faithful 7:36 long 2/26/1981 Old Faithful 8:52 1:16 ~2:20 8:46 8:51 2/26/1981 Old Faithful 9:56 1:04 ~5:00 9:47 9:46 2/26/1981 Old Faithful 11:16 1:20 1:50 11:18 2/26/1981 Old Faithful 12:13 0:57 4:51 12:06 12:05 2/26/1981 Old Faithful 13:35 1:22 2:22 13:23 13:33 2/26/1981 Old Faithful 14:31 0:56 4:54 14:28 14:31 2/26/1981 Old Faithful 15:48 1:17 2:58 15:51 15:51 2/26/1981 Old Faithful 16:55 1:07 4:40 16:49 16:49 2/26/1981 Artemisia 14:45 VR 2/26/1981 Aurum 11:21 2/26/1981 Beehive 17:06 d=5m1s 2/26/1981 Beehive's Indicator 17:02 ie 2/26/1981 Castle 9:55 VR 2/26/1981 Daisy 15:34 2/26/1981 Grand ~8:30 2/26/1981 Plume 10:14 2/26/1981 Plume 14:38 2/26/1981 Riverside 11:40 VR 2/27/1981 Old Faithful 8:52 3:54 2/27/1981 Old Faithful 10:01 1:09 2:01 9:59 10:04 2/27/1981 Old Faithful 10:56 0:55 4:44 10:53 2/27/1981 Old Faithful 12:16 1:20 2:26 12:11 12:16 2/27/1981 Old Faithful 13:15 0:59 4:21 13:08 13:11 2/27/1981 Old Faithful 14:44 1:29 1:55 14:27 14:33 2/27/1981 Old Faithful 15:29 0:45 4:52 15:31 2/27/1981 Old Faithful 16:58 1:21 1:58 16:49 16:49 2/27/1981 Old Faithful 17:44 0:46 17:43 17:50 2/27/1981 Beehive 13:11 2/27/1981 Castle 16:04 ie 2/27/1981 Plume 16:36 2/27/1981 Riverside 13:20 2/28/1981 Old Faithful 7:29 long 2/28/1981 Old Faithful 8:57 1:28 1:40 8:46 2/28/1981 Old Faithful 9:58 1:01 4:52 9:41 9:45 2/28/1981 Old Faithful 11:19 1:21 4:10 11:10 11:19 2/28/1981 Old Faithful 12:38 1:19 2:20 12:26 12:34 2/28/1981 Old Faithful 13:39 1:01 4:50 13:27 13:32 2/28/1981 Old Faithful 15:06 1:27 4:05 14:54 14:59 2/28/1981 Old Faithful 16:13 1:07 2:06 16:11 16:18 2/28/1981 Old Faithful 17:08 0:55 4:53 17:03 17:04 2/28/1981 Castle 11:32 2/28/1981 Daisy 13:32 2/28/1981 Depression 11:58 2/28/1981 Lone Star 13:00 VR 2/28/1981 Plume 8:36 2/28/1981 Plume 11:06 2/28/1981 Plume 14:43 2/28/1981 Plume 16:42 2/28/1981 Riverside 15:30 VR 2/28/1981 Tilt 11:50 3/1/1981 Old Faithful 9:13 4:22 3/1/1981 Old Faithful 10:28 1:15 4:13 10:28 10:28 3/1/1981 Old Faithful 11:46 1:18 3:34 11:31 11:42 3/1/1981 Old Faithful 12:54 1:08 4:28 12:54 12:56 3/1/1981 Old Faithful 14:12 1:18 1:57 14:10 14:12 3/1/1981 Old Faithful 15:01 0:49 4:29 14:59 15:05 3/1/1981 Old Faithful 16:31 1:30 1:48 16:16 16:18 3/1/1981 Old Faithful 17:28 0:57 4:48 17:19 3/1/1981 Beehive 19:10 3/1/1981 Daisy 15:15 3/1/1981 Depression 13:11 3/1/1981 Giantess periodic boiling 3/1/1981 Grand 17:05 3/1/1981 Lion 7:37 ie 3/1/1981 Lion 11:25 3/1/1981 Lion 13:19 3/1/1981 Lion 15:30 3/1/1981 Lion 16:28 3/1/1981 Lone Star 10:23 3/1/1981 Lone Star 13:16 VR 3/1/1981 Plume 11:00 3/1/1981 Plume 11:55 3/2/1981 Old Faithful 8:30 long 3/2/1981 Old Faithful ~9:49 1:19 4:00 9:47 3/2/1981 Old Faithful 11:02 1:13 4:09 11:01 11:02 3/2/1981 Old Faithful 12:24 1:22 2:20 12:14 12:15 3/2/1981 Old Faithful 13:25 0:59 4:30 13:15 13:18 3/2/1981 Old Faithful 14:47 1:24 1:56 14:26 14:40 3/2/1981 Old Faithful 15:45 0:58 4:32 15:26 15:38 3/2/1981 Beehive 12:06 d=5:14 water 3/2/1981 Beehive 12:06 d=2:58 steam 3/2/1981 Castle ~9:35 3/2/1981 Dome active 3/2/1981 Grand 13:15 3/2/1981 Plume 8:37 3/2/1981 Plume 14:27 3/2/1981 Riverside 13:50 3/2/1981 Rocket 9:18 3/2/1981 Sawmill 14:23 3/3/1981 Old Faithful 7:45 long 3/3/1981 Old Faithful 8:55 1:10 4:59 9:03 3/3/1981 Old Faithful 10:22 1:27 1:44 10:00 10:17 3/3/1981 Old Faithful 11:18 0:56 4:48 11:06 11:11 3/3/1981 Old Faithful 12:38 1:20 2:08 12:38 12:38 3/3/1981 Old Faithful 13:41 1:03 4:35 13:30 13:30 3/3/1981 Old Faithful 15:04 1:23 2:32 15:00 14:59 3/3/1981 Old Faithful 15:57 0:53 ~3:16 16:14 3/3/1981 Beehive 7:37 3/3/1981 Beehive 21:33 3/3/1981 Castle 14:48 3/3/1981 Depression 4:39 3/3/1981 Dome 10:15 ie 3/3/1981 Dome 14:06 3/3/1981 Grand 9:20 3/3/1981 Lone Star 9:35 ie 3/3/1981 Lone Star 12:30 ie 3/3/1981 Plume 4:31 3/3/1981 Plume 9:25 3/3/1981 Plume 9:58 3/3/1981 Plume 10:59 3/3/1981 Plume 15:08 3/4/1981 Old Faithful 8:36 4:30 8:28 3/4/1981 Old Faithful 9:55 1:19 ~2:16 9:50 9:54 3/4/1981 Old Faithful 10:52 0:57 4:52 10:42 10:49 3/4/1981 Old Faithful 12:09 1:17 4:17 12:00 12:11 3/4/1981 Old Faithful 13:30 1:21 4:10 13:20 13:25 3/4/1981 Old Faithful 14:46 1:16 2:04 14:43 14:45 3/4/1981 Old Faithful 15:36 0:50 4:47 15:38 3/4/1981 Old Faithful 16:57 1:21 2:12 16:55 3/4/1981 Old Faithful 17:58 1:01 4:36 17:48 17:50 3/4/1981 Beehive 11:56 3/4/1981 Castle 10:50 3/4/1981 Castle 15:39 3/4/1981 Depression 11:23 3/4/1981 Grand 8:00 ieVR 3/4/1981 Grand 16:08 3/4/1981 Lone Star 12:00 VR 3/4/1981 Plume 9:25 3/4/1981 Plume 10:56 3/4/1981 Plume 11:28 3/4/1981 Plume 12:02 3/4/1981 Plume 13:19 3/4/1981 Plume 14:36 3/5/1981 Old Faithful 9:01 ~4:04 3/5/1981 Old Faithful 10:30 1:29 2:42 10:23 10:13 3/5/1981 Old Faithful 11:25 0:55 4:20 11:11 11:29 3/5/1981 Old Faithful 12:39 1:14 4:04 12:37 12:44 3/5/1981 Old Faithful 13:56 1:17 4:16 13:51 13:51 3/5/1981 Old Faithful 15:08 1:12 4:18 15:12 3/5/1981 Old Faithful 16:28 1:20 3:58 16:22 16:24 3/5/1981 Old Faithful 17:47 1:19 4:25 17:40 3/5/1981 Aurum 9:25 3/5/1981 Aurum 11:39 3/5/1981 Aurum 15:12 3/5/1981 Beehive 10:47 ie "d=4:46H20,3:02stm" 3/5/1981 Beehive's Indicator 10:44 3/5/1981 Castle 11:11 3/5/1981 Daisy 10:30 3/5/1981 Daisy 12:11 3/5/1981 Grand 12:02 VR 1B 3/5/1981 Plume 9:25 3/5/1981 Plume 10:10 3/5/1981 Plume 10:25 3/5/1981 Plume 13:11 3/5/1981 Plume 12:47 VR 3/5/1981 Plume 14:22 3/5/1981 Plume 14:51 3/5/1981 Plume 16:59 3/5/1981 Plume 17:30 3/6/1981 Old Faithful 8:00 5:00 8:11 3/6/1981 Old Faithful 9:47 1:28 1:53 9:34 9:41 3/6/1981 Old Faithful 10:31 0:44 4:34 10:31 10:38 3/6/1981 Old Faithful 12:02 1:31 1:46 11:40 11:48 3/6/1981 Old Faithful 12:44 0:42 4:44 12:44 12:50 3/6/1981 Old Faithful 14:11 1:27 2:04 14:00 14:04 3/6/1981 Old Faithful 14:58 0:47 ~4:45 15:02 3/6/1981 Old Faithful 16:27 1:29 1:48 16:24 16:16 3/6/1981 Old Faithful 17:22 0:55 4:50 17:11 17:15 3/6/1981 Aurum 15:16 3/6/1981 Beehive 15:02 d=4:22 water 3/6/1981 Beehive Indicator 14:52 filled w/water 3/6/1981 Daisy ~13:05 VR 3/6/1981 Plume 12:02 3/6/1981 Plume 14:21 3/6/1981 Plume 15:02 3/6/1981 Plume 16:18 3/6/1981 Riverside ~12:20 VR 3/7/1981 Old Faithful 7:56 1:52 7:50 3/7/1981 Old Faithful 8:50 0:54 4:34 8:42 8:45 3/7/1981 Old Faithful 10:12 1:22 1:52 10:10 10:08 3/7/1981 Old Faithful 11:06 0:54 4:38 10:58 11:01 3/7/1981 Old Faithful 12:28 1:22 1:42 12:20 12:25 3/7/1981 Old Faithful 13:26 0:58 ~4:20 13:15 3/7/1981 Old Faithful 14:47 1:21 1:54 14:41 14:41 3/7/1981 Old Faithful 15:38 0:51 4:48 15:32 15:37 3/7/1981 Old Faithful 16:56 1:18 1:52 16:52 16:58 3/7/1981 Old Faithful 17:54 0:58 4:41 17:48 17:45 3/7/1981 Beehive 11:38 "d=4:07H20,stm~3:59" 3/7/1981 Castle ~14:00 3/7/1981 Daisy 10:57 3/7/1981 Daisy 16:13 VR 3/7/1981 Plume 8:46 3/7/1981 Plume 9:59 3/7/1981 Plume 11:06 3/8/1981 Old Faithful 9:27 4:39 9:20 3/8/1981 Old Faithful 10:47 1:20 2:16 10:41 10:45 3/8/1981 Old Faithful 11:37 0:50 4:46 11:34 11:42 3/8/1981 Old Faithful 12:56 1:19 2:04 12:52 12:56 3/8/1981 Old Faithful 13:46 0:50 4:41 13:43 13:48 3/8/1981 Old Faithful 15:13 1:27 2:08 15:11 15:05 3/8/1981 Old Faithful ~16:11 0:58 ~4:30 16:08 3/8/1981 Old Faithful 17:27 1:16 4:15 17:22 17:29 3/8/1981 Old Faithful 18:50 1:23 4:07 18:43 3/8/1981 Old Faithful 19:58 1:08 4:33 20:03 3/8/1981 Aurum 12:45 3/8/1981 Aurum 16:14 3/8/1981 Castle 10:41 ie 3/8/1981 Depression 10:35 3/8/1981 Depression 17:12 3/8/1981 Giantess 11:19:55 end 11:44:25 3/8/1981 Giantess 11:54:27 end 12:32:34 3/8/1981 Giantess 13:58 3/8/1981 Giantess 15:08:40 end 15:16:50 3/8/1981 Giantess 15:44:30 end 15:52:50 3/8/1981 Giantess 16:21 bursting 3/8/1981 Giantess 16:51 3/8/1981 Giantess 17:20 end 17:28:49 3/8/1981 Giantess 18:37 ie 3/8/1981 Grand 10:10 ie 3/8/1981 Plume 11:32 3/8/1981 Plume 12:40 3B 3/8/1981 Plume 14:11 3/8/1981 Plume 14:43 3/8/1981 Plume 15:45 3/8/1981 Plume 16:15 3/8/1981 Plume 16:45 4B 3/8/1981 Plume 17:15 4B 3/8/1981 Vault 15:13:35 overflow 3/8/1981 Vault 15:14:20 eruption 3/8/1981 Vault 15:42:10 end 3/9/1981 Old Faithful 9:40 1:55 9:22 3/9/1981 Old Faithful 10:27 0:47 ~4:45 10:32 3/9/1981 Old Faithful 11:58 1:31 4:06 11:45 11:47 3/9/1981 Old Faithful 13:10 1:12 1:56 13:00 13:11 3/9/1981 Old Faithful 14:08 0:58 4:50 13:54 14:02 3/9/1981 Old Faithful 15:29 1:21 2:07 15:27 3/9/1981 Old Faithful 16:40 1:11 4:42 16:18 16:22 3/9/1981 Old Faithful 18:05 1:25 1:57 17:56 17:59 3/9/1981 Old Faithful 18:56 0:51 4:46 18:51 18:56 3/9/1981 Old Faithful 20:17 1:21 3:48 20:16 3/9/1981 Old Faithful 21:29 1:12 short 21:29 3/9/1981 Beehive 17:12 ie 3/9/1981 Beehive's Indicator 14:49 3/9/1981 Castle 12:23 ie 3/9/1981 Fan & Mortar 11:50 VR 15 min. 3/9/1981 Giantess 10:57 3/9/1981 Giantess 11:57 3/9/1981 Giantess 13:24 3/9/1981 Giantess 14:43 3/9/1981 Grand 16:21 ie 3/9/1981 Lone Star 11:30 ieVR 3/9/1981 Plume 8:57 3/9/1981 Plume 12:28 3/9/1981 Plume 13:59 3/9/1981 Plume 14:29 3/9/1981 Plume 14:59 3/9/1981 Plume 15:29 3/9/1981 Plume 18:00 3/9/1981 Plume 19:00 3/9/1981 Riverside 8:10 VR finished 3/9/1981 Vault 15:34 3/10/1981 Old Faithful 7:45 ~4:30 3/10/1981 Old Faithful 8:49 1:04 ~2:00 9:00 3/10/1981 Old Faithful 10:23 1:34 2:30 10:10 9:51 3/10/1981 Old Faithful 11:10 0:47 4:31 11:06 11:21 3/10/1981 Old Faithful 12:40 1:30 2:05 12:31 12:28 3/10/1981 Old Faithful 13:37 0:57 long 13:29 13:32 3/10/1981 Old Faithful 15:06 1:29 2:00 14:55 14:44 3/10/1981 Old Faithful 15:51 0:45 4:36 15:50 15:58 3/10/1981 Old Faithful 17:08 1:17 4:06 17:07 17:09 3/10/1981 Aurum 11:51 3/10/1981 Beehive 8:15 3/10/1981 Castle ~9:15 3/10/1981 Daisy 7:05 3/10/1981 Daisy 17:00 VR 3/10/1981 Depression 14:22 3/10/1981 Grand ~11:40 3/10/1981 Grotto 16:55 VR 3/10/1981 Lone Star 10:55 VR 3/10/1981 Plume 7:37 3/10/1981 Plume 8:50 3/10/1981 Plume 11:06 3/10/1981 Plume 14:09 3/10/1981 Plume 17:09 3/11/1981 Old Faithful 9:29 2:31 9:25 3/11/1981 Old Faithful 10:29 1:00 ~4:45 10:25 10:27 3/11/1981 Old Faithful 11:45 1:10 1:56 11:59 3/11/1981 Old Faithful 12:45 1:00 4:34 12:32 12:34 3/11/1981 Old Faithful 14:01 1:16 4:06 none 14:03 3/11/1981 Old Faithful 15:11 1:10 4:33 none 15:15 3/11/1981 Old Faithful 16:35 1:24 ~1:52 16:28 16:29 3/11/1981 Old Faithful 17:22 0:47 4:22 17:25 3/11/1981 Beehive 12:53 d=~4:39 3/11/1981 Castle 14:45 3/11/1981 Daisy 8:45 VR 3/11/1981 Daisy 15:05 VR 3/11/1981 Grand 8:18 VR at least 4B 3/11/1981 Grand 18:00 VR 3/11/1981 Lone Star 13:25 VR 3/11/1981 Lone Star 16:50 3/11/1981 Plume 17:35 3/11/1981 Riverside ~8:05 VR 3/11/1981 Riverside 14:00 VR 3/12/1981 Old Faithful 7:54 2:00 7:40 Treetop 3/12/1981 Old Faithful 8:50 0:56 4:53 8:37 8:46 3/12/1981 Old Faithful 10:07 1:17 2:12 10:10 3/12/1981 Old Faithful 11:07 1:00 4:28 11:04 11:05 3/12/1981 Old Faithful 12:27 1:20 1:59 12:19 12:25 3/12/1981 Old Faithful 13:29 1:02 4:19 13:14 13:16 3/12/1981 Old Faithful 14:49 1:20 1:56 14:46 14:45 3/12/1981 Old Faithful 15:44 0:55 4:46 15:34 15:39 3/12/1981 Old Faithful 17:07 1:23 1:43 16:56 17:04 Sundown 18:00 3/12/1981 Old Faithful 18:06 0:59 4:46 17:53 3/12/1981 Beehive 13:30 d~4:36 3/12/1981 Castle 9:52 3/12/1981 Grand 7:39 ie 2B 3/12/1981 Grand 8:26 ie 3/12/1981 Grand 14:30 ie 3/12/1981 Plume 8:27 3/12/1981 Plume 12:05 3/12/1981 Plume 13:15 3/12/1981 Plume 16:12 3/12/1981 Plume 16:47 3/12/1981 Plume 18:26 3/12/1981 Riverside 10:38 VR 3/12/1981 Three Sisters N Vent 16:36 ie 3/12/1981 Three Sisters N Vent 16:54 ie d=49s 3/12/1981 Three Sisters N Vent 17:14 d=54s 3/12/1981 Three Sisters N Vent 19:36 d=53s 3/13/1981 Old Faithful 9:48 ~1:30 3/13/1981 Old Faithful 10:39 0:51 ~4:45 10:27 10:33 3/13/1981 Old Faithful 11:59 1:20 4:01 11:59 3/13/1981 Old Faithful 13:19 1:20 2:14 13:11 3/13/1981 Old Faithful 14:08 0:49 4:30 14:06 14:14 3/13/1981 Old Faithful 15:29 1:21 1:36 15:28 15:26 3/13/1981 Old Faithful 16:24 0:55 4:35 16:13 16:14 3/13/1981 Old Faithful 17:47 1:23 1:58 17:42 3/13/1981 Artemisia 10:28 3/13/1981 Artemisia 15:08 3/13/1981 Beehive ~11:05 3/13/1981 Beehive's Indicator 11:00 3/13/1981 Castle 9:50 ie 3/13/1981 Castle 14:20 minor 3/13/1981 Castle 20:10 ie 3/13/1981 Daisy 9:34 VR 3/13/1981 Depression 12:39 3/13/1981 Grand 4:00 3B 3/13/1981 North Goggles 13:20 3/13/1981 Oblong 14:30 late? 3/13/1981 Plume 11:02 3/13/1981 Plume 13:14 3/13/1981 Plume 16:06 3/13/1981 Plume 17:37 3/13/1981 Riverside 12:35 3/14/1981 Old Faithful 8:37 ~4:45 3/14/1981 Old Faithful 10:00 1:23 2:00 9:53 9:57 3/14/1981 Old Faithful 10:55 0:55 4:29 10:54 10:51 3/14/1981 Old Faithful 12:20 1:25 4:01 12:12 12:13 3/14/1981 Old Faithful 13:31 1:11 1:58 13:30 13:34 3/14/1981 Old Faithful 14:27 0:56 4:11 14:21 14:20 3/14/1981 Old Faithful 15:53 1:26 ~2:00 15:50 15:42 3/14/1981 Old Faithful 16:44 0:51 ~4:31 16:42 16:44 3/14/1981 Old Faithful 18:08 1:24 1:59 18:02 Sundown 18:02 3/14/1981 Old Faithful 19:01 0:53 4:44 18:55 18:59 3/14/1981 Anemone 14:40 3/14/1981 Castle 16:33 3/14/1981 Daisy 14:11 ie end 14:40 3/14/1981 Grand 13:52 1stB end 14:01 3/14/1981 Grand 13:53 ie 3/14/1981 Grand 14:02 2ndB end14:03 3/14/1981 Little Brother 11:58 3/14/1981 Little Brother 13:22 3/14/1981 Little Brother 14:24 3/14/1981 Little Brother 15:44 3/14/1981 Little Brother 16:03 3/14/1981 Little Brother 16:23 3/14/1981 Little Brother 16:45 3/14/1981 Little Brother 17:23 3/14/1981 Little Brother 17:42 3/14/1981 Plume 9:05 3/14/1981 Plume 9:47 3/14/1981 Plume 11:06 3/14/1981 Plume 11:39 3/14/1981 Plume 13:02 3/14/1981 Plume 14:12 3/14/1981 Plume 14:50 3/14/1981 Plume 15:21 3/14/1981 Riverside ~12:20 VR 3/14/1981 Sawmill 15:30 VR 3/14/1981 Unnamed25mEof LB 14:02 end 14:14 3/15/1981 Old Faithful 9:44 4:31 9:37 3/15/1981 Old Faithful 11:11 1:27 1:52 10:55 11:02 3/15/1981 Old Faithful 12:01 0:50 4:51 11:52 12:00 3/15/1981 Old Faithful 13:28 1:27 1:36 13:22 13:21 3/15/1981 Old Faithful 14:16 0:48 4:34 14:14 3/15/1981 Old Faithful 15:39 1:23 ~2:20 15:33 3/15/1981 Old Faithful 16:33 0:54 4:29 16:32 16:33 3/15/1981 Old Faithful 17:56 1:25 short 17:51 3/15/1981 Old Faithful 18:56 1:00 long 18:47 3/15/1981 Old Faithful 20:21 1:25 3:43 20:16 3/15/1981 Old Faithful 21:29 1:08 long 21:32 3/15/1981 Beehive 14:09 d=5:03 stm1:58 3/15/1981 Castle 6:47 VR 3/15/1981 Daisy 11:52 3/15/1981 Grand 9:10 VR 3/15/1981 Lion 11:36 3/15/1981 Lion 11:55 3/15/1981 Little Brother 14:40 3/15/1981 Lone Star 9:43 minor 3/15/1981 Plume 14:20 3/15/1981 Plume 16:47 3/15/1981 UN25mE.Little Brother 12:14 ie 3/16/1981 Old Faithful 9:09 4:07 8:58 3/16/1981 Old Faithful 10:20 1:11 2:09 10:17 10:23 3/16/1981 Old Faithful 11:18 0:58 4:35 11:08 11:11 3/16/1981 Old Faithful 12:44 1:26 4:29 12:36 3/16/1981 Old Faithful 13:57 1:13 3:58 13:53 14:02 3/16/1981 Old Faithful 15:20 1:23 4:11 15:04 15:11 3/16/1981 Old Faithful 16:43 1:23 4:13 16:28 16:35 3/16/1981 Depression 15:08 3/16/1981 Dome active 3/16/1981 Grand 12:53 ie 3/16/1981 Great Fountain 14:34 ie 3/16/1981 Plume 13:36 3/16/1981 Plume 16:05 3/17/1981 Old Faithful 9:34 4:27 9:22 wind 20-30 mph 3/17/1981 Old Faithful 10:53 1:19 4:09 10:39 10:51 Hi 31oF Lo -8oF 3/17/1981 Old Faithful 12:07 1:14 2:12 12:02 12:09 3/17/1981 Old Faithful 12:56 0:49 4:43 13:01 3/17/1981 Old Faithful 14:23 1:27 1:51 14:05 14:16 3/17/1981 Old Faithful 15:30 1:07 4:46 15:05 15:12 3/17/1981 Old Faithful 16:58 1:28 1:56 16:43 16:50 3/17/1981 Old Faithful 17:48 0:50 4:25 17:50 3/17/1981 Castle 10:10 ie 3/17/1981 Depression 13:27 3/17/1981 Dome active 3/17/1981 Little Brother 15:23 3/17/1981 Plume 9:28 3/17/1981 Plume 10:29 3/17/1981 Plume 10:59 3/17/1981 Plume 11:30 3/17/1981 Plume 12:01 3/17/1981 Plume 13:04 3/17/1981 Plume 13:36 3/17/1981 Plume 14:13 3/17/1981 Plume 15:17 3/17/1981 Plume 17:06 3/18/1981 Old Faithful 8:14 short 3/18/1981 Old Faithful 9:11 0:57 4:42 9:03 9:05 3/18/1981 Old Faithful 10:33 1:22 4:37 10:19 10:32 3/18/1981 Old Faithful 11:54 1:21 4:21 11:44 11:56 3/18/1981 Old Faithful 13:11 1:17 short 13:10 3/18/1981 Old Faithful 13:59 0:48 4:51 13:57 14:02 3/18/1981 Old Faithful 15:26 1:27 2:03 15:20 3/18/1981 Old Faithful 16:27 1:01 4:37 16:18 3/18/1981 Aurum 11:21 3/18/1981 Beehive 13:12 d=04:5m st=02:10 3/18/1981 Castle 13:05 ie 3/18/1981 Depression 11:07 3/18/1981 Plume 8:29 3/18/1981 Plume 9:10 3/18/1981 Plume 10:24 3/18/1981 Plume 11:01 3/18/1981 Plume 11:38 3/18/1981 Plume 14:13 3/18/1981 Plume 14:52 3/18/1981 Plume 15:24 3/18/1981 Plume 16:29 3/18/1981 Spa 9:50 ie 10 meters 3/19/1981 Old Faithful 8:02 4:54 7:52 3/19/1981 Old Faithful 9:20 1:18 2:08 9:23 3/19/1981 Old Faithful 10:19 0:59 4:46 10:15 3/19/1981 Old Faithful 11:44 1:25 1:59 11:34 11:39 3/19/1981 Old Faithful 12:31 0:47 4:41 none 12:36 3/19/1981 Old Faithful 14:04 1:33 2:12 13:47 13:53 3/19/1981 Old Faithful 14:59 0:55 long 14:58 3/19/1981 Old Faithful 16:28 1:29 2:04 16:11 16:20 3/19/1981 Old Faithful 17:17 0:49 4:36 17:13 17:19 3/19/1981 Aurum 14:42 3/19/1981 Castle 9:00 ie 3/19/1981 Depression 7:47 3/19/1981 Depression 14:07 int=6h20m 3/19/1981 Grand 9:33 ie 2B 3/19/1981 Plume 9:46 3/19/1981 Plume 10:26 3/19/1981 Plume 11:05 3/19/1981 Plume 12:16 3/19/1981 Plume 14:07 3/19/1981 Plume 14:42 3/19/1981 Plume 16:27 3/19/1981 Plume 17:04 3/20/1981 Old Faithful 8:34 long 3/20/1981 Old Faithful 9:51 1:17 2:00 9:48 9:54 3/20/1981 Old Faithful 10:51 1:00 4:56 10:43 3/20/1981 Old Faithful 12:14 1:23 4:18 12:08 12:14 3/20/1981 Old Faithful 13:31 1:17 4:25 13:22 13:30 3/20/1981 Old Faithful 14:50 1:19 2:25 14:40 14:49 3/20/1981 Old Faithful 15:43 0:53 ~4 3/4 16:43 15:46 3/20/1981 Old Faithful 17:05 1:22 4:52 17:04 3/20/1981 Old Faithful 18:27 1:22 2:15 18:13 18:26 3/20/1981 Old Faithful 19:30 1:03 4:30 3/20/1981 Castle 15:05 ie 3/20/1981 Giantess 2:57 3/20/1981 Giantess 9:57 water 3/20/1981 Giantess 10:40 3/20/1981 Giantess 11:16 ie 3/20/1981 Giantess 11:59 d=8m32s 3/20/1981 Giantess 13:39 d=7m48s 3/20/1981 Giantess 14:23 d~8m 3/20/1981 Giantess 15:06 d=7m 3/20/1981 Giantess 15:55 d=9m53s 3/20/1981 Giantess 16:24 3/20/1981 Giantess 16:27 d=~5m 3/20/1981 Giantess 17:12 d=~8m 3/20/1981 Giantess 19:31 3/20/1981 Lion 10:04 3/20/1981 Lion 15:13 minor 3/20/1981 Plume 9:51 3/20/1981 Plume 10:20 3/20/1981 Plume 10:48 3/20/1981 Plume 11:17 3/20/1981 Plume 11:44 3/20/1981 Plume 12:13 3/20/1981 Plume 14:36 3/20/1981 Plume 15:06 3/20/1981 Plume 15:36 3/20/1981 Plume 16:03 3/20/1981 Plume 16:35 3/20/1981 Plume 17:05 3/20/1981 Round dormsincelastbigsno 3/21/1981 Old Faithful 11:53 4:43 11:46 3/21/1981 Old Faithful 13:15 1:22 1:57 13:03 13:14 3/21/1981 Old Faithful 17:39 4:10 17:36 3/21/1981 Beehive 17:43 d=4m54stm=2m33s 3/21/1981 Beehive's Indicator 17:31 ie 3/21/1981 Castle 17:00 ie 3/21/1981 Plume 11:47 3/21/1981 Plume 12:17 3/21/1981 Plume 17:21 3/21/1981 Plume 17:49 3/22/1981 Old Faithful 10:52 4:31 10:48 3/22/1981 Old Faithful 12:10 1:18 4:12 12:10 3/22/1981 Old Faithful 13:31 1:21 1:53 13:26 3/22/1981 Old Faithful 14:17 0:46 4:46 14:16 14:22 3/22/1981 Old Faithful 15:51 1:34 1:52 15:34 15:40 3/22/1981 Old Faithful 16:31 0:40 5:03 16:42 3/22/1981 Old Faithful 17:57 1:26 short 17:54 3/22/1981 Old Faithful 18:54 0:57 4:47 18:48 3/22/1981 Aurum 14:00 3/22/1981 Beehive 19:09 d=5m9s 3/22/1981 Beehive's Indicator 19:00 ie 3/22/1981 Castle 13:10 ie 3/22/1981 Grand 16:22 ie 3/22/1981 Plume 14:04 3/22/1981 Plume 14:34 3/22/1981 Plume 15:07 3/22/1981 Plume 15:38 3/22/1981 Plume 16:12 3/22/1981 Plume 16:50 3/23/1981 Old Faithful 7:13 4:18 7:04 3/23/1981 Old Faithful 8:40 1:27 1:50 <8:25 8:29 3/23/1981 Old Faithful 9:22 0:42 long 9:29 3/23/1981 Old Faithful 10:44 1:22 1:52 10:45 3/23/1981 Old Faithful 11:35 0:51 4:38 11:30 11:33 3/23/1981 Old Faithful 13:00 1:25 2:01 12:57 3/23/1981 Old Faithful 13:54 0:54 4:38 13:42 13:52 3/23/1981 Old Faithful 15:09 1:15 2:21 15:08 15:17 3/23/1981 Old Faithful 16:05 0:56 4:34 16:01 16:04 3/23/1981 Old Faithful 17:21 1:16 4:18 17:21 17:23 3/23/1981 Aurum 17:31 3/23/1981 Castle 9:24 ie 3/23/1981 Depression 16:36 3/23/1981 Grand 9:38 ie 3/23/1981 Plume 10:48 3/23/1981 Plume 11:22 3/24/1981 Old Faithful 8:46 1:54 8:37 3/24/1981 Old Faithful 9:34 0:48 4:25 9:37 3/24/1981 Old Faithful 11:07 1:33 1:52 10:46 10:57 3/24/1981 Old Faithful 11:51 0:44 4:32 11:42 11:55 3/24/1981 Old Faithful 13:15 1:24 2:08 13:14 3/24/1981 Old Faithful 14:08 0:53 4:43 14:02 14:10 3/24/1981 Old Faithful 15:36 1:28 1:50 15:25 15:31 3/24/1981 Old Faithful 16:28 0:52 4:35 16:21 16:25 3/24/1981 Old Faithful 17:45 1:27 2:05 17:39 17:51 3/24/1981 Old Faithful 18:41 0:56 4:51 18:31 18:37 3/24/1981 Old Faithful 20:05 1:24 2:10 20:04 Sundown18:17 3/24/1981 Old Faithful 21:06 1:01 4:39 21:00 3/24/1981 Aurum 15:30 3/24/1981 Beehive 13:23 d=4m34 stm2m46s 3/24/1981 Beehive's Indicator 13:11 ie 3/24/1981 Daisy 13:21 3/24/1981 Grand 15:24 ie 3/24/1981 Oblong 17:51 3/24/1981 Plume 9:35 3/24/1981 Plume 10:06 3/24/1981 Plume 10:47 3/24/1981 Plume 11:28 3/24/1981 Plume 12:08 3/24/1981 Plume 13:12 3/24/1981 Plume 13:51 3/24/1981 Plume 14:26 3/24/1981 Plume 15:39 3/24/1981 Plume 16:17 3/24/1981 Plume 16:56 3/24/1981 Plume 17:35 3/24/1981 Plume 18:08 3/24/1981 Plume 18:48 3/25/1981 Old Faithful 8:54 1:57 8:46 3/25/1981 Old Faithful 9:45 0:51 4:46 9:39 9:46 3/25/1981 Old Faithful 11:04 ie 1:19 11:05 3/25/1981 Old Faithful 12:18 1:14 2:05 12:11 3/25/1981 Old Faithful 15:46 4:27 15:34 3/25/1981 Beehive 10:37 ie 3/25/1981 Castle 13:00 ie 3/25/1981 Dome active 3/29/1981 Old Faithful 8:15 long 8:13 3/29/1981 Old Faithful 9:46 1:31 4:20 hvy 9:27 9:36 3/29/1981 Old Faithful 11:03 1:17 4:13 10:56 11:02 3/29/1981 Old Faithful 12:30 1:27 4:19 12:15 12:19 3/29/1981 Old Faithful 13:38 1:08 4:21 13:46 3/29/1981 Old Faithful 14:54 1:16 1:55 14:50 14:54 3/29/1981 Old Faithful 15:45 0:51 4:26 15:46 3/29/1981 Old Faithful 17:13 1:28 2:03 16:55 17:08 3/29/1981 Aurum 11:35 3/29/1981 Beehive 11:25 d=4m49 stm=2m4s 3/29/1981 Beehives Indicator 11:11 ie 3/29/1981 Castle 7:50 ie 3/29/1981 Daisy 11:23 ie 3/29/1981 Depression 9:46 3/29/1981 Depression 16:22 I=6h36 3/29/1981 Dome active 3/29/1981 Plume 9:35 3/29/1981 Plume 12:31 3/29/1981 Plume 17:07 3/30/1981 Old Faithful 8:34 4:31 8:23 wind 25-35 mph 3/30/1981 Old Faithful ~9:40 1:06 long 9:52 3/30/1981 Old Faithful 10:56 1:16 3:46 11:00 3/30/1981 Old Faithful 12:13 1:17 ~2 12:05 12:08 3/30/1981 Old Faithful 13:14 1:01 4:34 ~13:00 13:03 3/30/1981 Old Faithful 14:35 1:21 2:23 14:25 14:32 3/30/1981 Old Faithful 15:29 0:54 4:57 15:21 15:31 3/30/1981 Old Faithful 16:48 1:20 short 16:52 3/30/1981 Beehive 9:47 3/30/1981 Depression 15:09 3/30/1981 Grand 14:31 4 B 3/30/1981 Plume 11:12 3/30/1981 Plume 12:14 3/30/1981 Plume 13:19 3/30/1981 Plume 14:22 3/30/1981 Plume 14:52 3/30/1981 Plume 15:25 3/30/1981 Plume 15:57 3/30/1981 Plume 16:32 3/31/1981 Old Faithful 8:59 2:15 8:58 3/31/1981 Old Faithful 9:50 0:51 4:13 9:54 3/31/1981 Old Faithful 11:12 1:22 1:58 11:08 11:06 3/31/1981 Old Faithful 12:05 0:53 4:22 11:57 12:04 3/31/1981 Old Faithful 13:27 1:22 2:06 13:15 13:22 3/31/1981 Old Faithful 14:18 0:51 4:38 14:11 14:17 3/31/1981 Old Faithful 15:39 1:21 1:59 15:28 15:41 3/31/1981 Old Faithful 16:27 0:48 4:31 16:31 3/31/1981 Daisy 11:56 3/31/1981 Plume 8:07 3/31/1981 Plume 10:34 3/31/1981 Plume 11:13 3/31/1981 Plume 13:03 3/31/1981 Plume 14:15 4/1/1981 hvysnoallday10' 4/2/1981 Castle 13:34 4/2/1981 Giantess 1:35 "steam, mixed" 4/5/1981 Castle 7:40 ie 4/6/1981 Grand 13:12 ie 4/8/1981 Old Faithful 11:11 2:06 10:58 4/8/1981 Old Faithful 11:58 0:47 4:40 11:57 12:02 4/8/1981 Old Faithful 13:16 1:18 2:07 13:21 4/8/1981 Old Faithful 14:22 1:06 4:34 14:07 14:06 4/8/1981 Old Faithful 15:36 1:14 1:59 15:40 4/8/1981 Old Faithful 16:34 0:58 4:51 16:28 4/8/1981 Aurum 16:21 4/8/1981 Beehive 10:03 d=4m59stm=2m11s 4/8/1981 Grand 16:15 ie 2B 4/8/1981 Plume 10:26 4/8/1981 Plume 11:07 4/8/1981 Plume 12:58 4/8/1981 Plume 13:29 "4B,55s" 4/8/1981 Plume 14:08 4/8/1981 Plume 16:29 4/11/1981 Dome active 4/11/1981 Kaleidoscope active 4/12/1981 Old Faithful 14:34 4:35 winds 30-45 mph 4/12/1981 Old Faithful 15:59 1:25 2:16 15:49 2ndlmbfmtop 15:52 4/12/1981 Old Faithful 16:50 0:51 4:42 16:50 16:53 4/12/1981 Old Faithful 18:09 1:19 2:07 18:10 4/12/1981 Old Faithful 19:02 0:53 4:38 19:01 4/12/1981 Old Faithful 20:20 1:18 1:58 20:22 4/12/1981 Old Faithful 21:22 1:02 4:45 21:12 brtAurBordisplay 4/12/1981 Old Faithful 22:48 1:26 2:10 22:44 4/12/1981 Old Faithful 23:41 0:53 4:46 23:42 4/12/1981 Daisy 21:25 ie winds 30-45mph 4/12/1981 Dome active 4/12/1981 Grand 14:48 4/12/1981 Penta 14:50 d>17m 4/13/1981 Old Faithful 8:26 short 4/13/1981 Old Faithful 9:19 0:53 4:31 9:13 9:18 4/13/1981 Old Faithful 10:55 1:36 1:52 10:36 10:37 4/13/1981 Old Faithful 11:42 1:17 4:38 11:28 11:44 4/13/1981 Old Faithful 13:10 1:28 1:49 12:53 13:02 4/13/1981 Old Faithful 14:10 1:00 4:24 13:54 13:59 4/13/1981 Plume 8:39 4/13/1981 Plume 11:00 4/14/1981 Old Faithful 8:51 4:19 4/14/1981 Old Faithful 10:05 1:14 4:21 9:58 10:06 4/14/1981 Old Faithful 11:26 1:21 2:16 11:15 11:20 4/14/1981 Old Faithful 12:17 ie long 12:20 4/14/1981 Old Faithful 13:40 2:04 13:34 4/14/1981 Old Faithful 14:39 0:59 4:58 14:28 14:31 4/14/1981 Old Faithful 16:03 1:24 long 4/14/1981 Old Faithful 16:50 0:47 4:42 4/14/1981 Old Faithful 18:10 1:20 3:44 18:09 4/14/1981 Old Faithful 19:15 1:15 4:16 19:19 4/14/1981 Beehive 15:12 "d4:55H20,2:11stm" 4/14/1981 Beehive's Indicator 14:59 4/14/1981 Castle 14:45 d=19m56s water 4/14/1981 Depression 17:17 ie 4/14/1981 Grand 10:16 3B 4/14/1981 Grand 15:50 ie 3B 4/14/1981 Lion 19:15 4/14/1981 Plume 8:43 4/14/1981 Plume 9:59 4/14/1981 Plume 11:05 4/14/1981 Plume 12:23 4/14/1981 Plume 13:28 4/14/1981 Plume 13:42 4/14/1981 Plume 15:03 4/14/1981 Plume 17:25 4/14/1981 Plume 18:02 4/14/1981 Tardy 16:11 4/14/1981 West Triplet 15:57 ie 4/15/1981 Old Faithful 8:17 1:51 8:10 4/15/1981 Old Faithful 9:21 1:04 4:33 9:00 9:06 4/15/1981 Old Faithful 10:43 1:22 4:41 10:33 10:41 4/15/1981 Old Faithful 12:00 1:17 1:49 11:58 12:03 4/15/1981 Old Faithful 12:56 0:56 4:34 12:42 12:49 4/15/1981 Old Faithful 14:21 1:25 1:37 14:09 14:13 4/15/1981 Old Faithful 15:20 0:59 4:31 15:04 15:10 4/15/1981 Old Faithful 16:46 1:26 2:09 16:34 16:37 4/15/1981 Beehive 10:55 d=4m29s water 4/15/1981 Beehive's Indicator 10:30 4/15/1981 Castle 0:27 minor during evening 4/15/1981 Castle 10:09 "I=9h,42m" 4/15/1981 Castle 10:10 4/15/1981 Daisy 11:05 4/15/1981 Daisy 14:18 4/15/1981 Daisy 15:58 4/15/1981 Grand 10:16 3B 4/15/1981 Plume 8:07 4/15/1981 Plume 9:20 4/15/1981 Plume 9:52 4/15/1981 Plume 10:24 4/15/1981 Plume 10:52 4/15/1981 Plume 14:16 4/15/1981 Plume 14:27 4/15/1981 Plume 15:20 4/15/1981 Plume 15:51 4/16/1981 Old Faithful 7:50 4:19 4/16/1981 Old Faithful 9:10 1:20 2:32 9:07 9:05 4/16/1981 Old Faithful 10:10 1:00 4:19 10:02 10:16 4/16/1981 Old Faithful 11:35 1:25 2:08 11:23 11:25 4/16/1981 Old Faithful 12:35 1:00 4:48 12:17 12:31 4/16/1981 Old Faithful 14:01 1:26 1:39 13:49 13:55 4/16/1981 Old Faithful 14:44 0:43 4:07 14:50 4/16/1981 Old Faithful 16:10 1:26 1:47 16:10 15:57 4/16/1981 Old Faithful 17:08 0:58 4:28 16:57 17:01 4/16/1981 Castle 8:20 ie 4/16/1981 Dome ~9:45 active 4/16/1981 Plume 9:21 4/16/1981 Plume 9:48 4/16/1981 Plume 10:27 4/16/1981 Plume 11:03 4/16/1981 Plume 11:33 4/16/1981 Plume 12:06 4/16/1981 Plume 12:35 4/16/1981 Plume 13:09 4/16/1981 Plume 13:39 4/16/1981 Plume 14:43 4/16/1981 Plume 15:14 4/16/1981 Plume 15:46 4/16/1981 Plume 16:18 4/16/1981 Plume 16:52 4/17/1981 Old Faithful 8:34 4:17 8:13 4/17/1981 Old Faithful 10:05 1:31 1:46 9:45 9:49 4/17/1981 Old Faithful 10:53 0:48 4:59 10:49 10:54 4/17/1981 Old Faithful 12:18 1:35 1:43 12:05 12:15 4/17/1981 Old Faithful 13:08 0:50 4:26 13:05 13:07 4/17/1981 Old Faithful 14:32 1:34 1:47 14:17 14:14 4/17/1981 Old Faithful 15:16 0:44 4:31 15:21 4/17/1981 Old Faithful 16:47 1:31 1:45 16:43 16:33 4/17/1981 Old Faithful 17:43 0:56 4:31 17:32 17:36 4/17/1981 Beehive 14:38 "d4'45""H20,3' 26""stm" 4/17/1981 Beehive's Indicator 14:23 4/17/1981 Castle 9:15 ie 4/17/1981 Daisy 8:26 4/17/1981 Daisy 10:15 4/17/1981 Daisy 11:47 4/17/1981 Daisy 15:01 4/17/1981 Daisy 16:49 4/17/1981 Depression 15:07 4/17/1981 Grand 11:26 3B 4/17/1981 Plume 8:22 4/17/1981 Plume 8:58 4/17/1981 Plume 9:36 4/17/1981 Plume 10:12 4/17/1981 Plume 10:43 4/17/1981 Plume 11:18 4/17/1981 Plume 12:25 4/17/1981 Plume 13:03 4/17/1981 Plume 14:15 4/17/1981 Plume 14:45 4/17/1981 Plume 15:17 4/17/1981 Plume 15:56 4/17/1981 Plume 17:01 4/17/1981 Plume 17:35 4/20/1981 Old Faithful 8:17 1:44 4/20/1981 Old Faithful 9:31 1:14 4:42 9:10 9:06 4/20/1981 Old Faithful 10:49 1:18 4:29 10:47 10:51 4/20/1981 Old Faithful 12:07 1:18 2:38 12:00 12:06 4/20/1981 Old Faithful 13:20 1:13 4:21 12:55 13:06 4/20/1981 Old Faithful 14:40 1:20 1:55 14:25 14:35 4/20/1981 Old Faithful 15:39 0:59 4:41 15:25 15:31 4/20/1981 Old Faithful 16:58 1:19 1:57 16:50 16:59 4/20/1981 Aurum 13:28 4/20/1981 Plume 8:29 4/20/1981 Plume 9:08 4/20/1981 Plume 9:50 4/20/1981 Plume 10:24 4/20/1981 Plume 10:56 4/20/1981 Plume 11:30 4/20/1981 Plume 12:12 4/20/1981 Plume 12:53 4/20/1981 Plume 13:26 4/20/1981 Plume 13:56 4/20/1981 Plume 14:35 4/20/1981 Plume 15:09 4/20/1981 Plume 15:41 4/20/1981 Plume 16:13 4/20/1981 Plume 16:44 4/21/1981 Old Faithful 8:45 1:55 8:29 4/21/1981 Old Faithful 9:33 0:48 4:31 9:20 9:36 4/21/1981 Old Faithful 11:08 1:35 4:39 10:51 10:40 4/21/1981 Old Faithful 12:28 1:20 1:52 12:15 12:28 4/21/1981 Old Faithful 13:26 0:58 4:50 13:13 13:18 4/21/1981 Old Faithful 14:51 1:33 2:59 14:46 14:46 4/21/1981 Old Faithful 15:55 1:04 4:44 15:50 15:52 4/21/1981 Old Faithful 17:17 1:22 2:10 17:09 17:15 4/21/1981 Aurum 12:17 4/21/1981 Castle 10:38 ie minor 4/21/1981 Grand 9:36 ie 4/21/1981 Plume 8:34 4/21/1981 Plume 9:35 4/21/1981 Plume 10:07 4/21/1981 Plume 10:37 4/21/1981 Plume 11:10 4/21/1981 Plume 11:41 4/21/1981 Plume 12:12 4/21/1981 Plume 12:43 4/21/1981 Plume 13:14 4/21/1981 Plume 13:47 4/21/1981 Plume 14:19 4/21/1981 Plume 14:49 4/21/1981 Plume 15:25 4/21/1981 Plume 15:54 4/21/1981 Plume 16:26 4/22/1981 Old Faithful 8:12 4:16 4/22/1981 Old Faithful 10:15 4:17 4/22/1981 Old Faithful 11:36 1:21 2:00 11:30 11:30 4/22/1981 Old Faithful 12:29 0:53 4:08 12:35 4/22/1981 Old Faithful 13:58 1:29 1:59 13:46 13:44 4/22/1981 Old Faithful 14:45 0:47 4:22 14:49 4/22/1981 Old Faithful 16:03 1:18 3:43 15:59 16:00 4/22/1981 Old Faithful 17:18 1:13 short 4/22/1981 Beehive 8:26 4/22/1981 Castle 8:20 4/22/1981 Giantess 9:46 ie 1stB end10:02h=50' 4/22/1981 Giantess 10:10 "2ndB>100',20-25m" 4/22/1981 Giantess 12:27 stdysplshto 60 feet 4/22/1981 Giantess 12:32 "short pauses,then" 4/22/1981 Giantess 12:53 "20""hvy srgsto100'" 4/22/1981 Giantess 13:54 "3rdB>100'11-12m," 4/22/1981 Giantess 14:29 3rdB till 14:37 4/22/1981 Giantess 15:00 4thB lasted~6m 4/22/1981 Giantess 15:54 6thB lasted~9m 4/22/1981 Giantess 16:23 7thB lasted~7m 4/22/1981 Giantess 16:52 8thB lasted ~7m 4/22/1981 Giantess 17:23 9thB lasted ~7m 4/22/1981 Grand 7:56 ie 2B 4/22/1981 Grand 16:54 ie 3B 4/22/1981 Infant 9:40 down 10 inches 4/22/1981 Infant 10:14 down 12-14 inches 4/22/1981 Infant 11:30 "rising,down 6 inches" 4/22/1981 Infant 16:40 "sprhtd,down4 inches" 4/22/1981 Plume 9:12 4/22/1981 Plume 11:15 4/22/1981 Plume 11:56 4/22/1981 Plume 12:35 4/22/1981 Plume 13:08 4/22/1981 Plume 13:58 4/22/1981 Plume 14:38 4/22/1981 Plume 15:12 4/22/1981 Plume 15:40 4/22/1981 Plume 16:41 4/22/1981 Plume 17:13 4/22/1981 Vault 9:40 full 4/22/1981 Vault 10:14 down 6 inches 4/22/1981 Vault 10:42 down 18 inches 4/22/1981 Vault 11:15 down ~3 feet 4/22/1981 Vault 12:40 down ~7 feet 4/22/1981 Vault 17:05 "eruption, not initial" 4/24/1981 Old Faithful 8:53 2:06 8:46 4/24/1981 Old Faithful 9:47 0:54 4:27 9:45 9:44 4/24/1981 Old Faithful 11:07 1:20 1:55 11:05 11:03 4/24/1981 Old Faithful 12:03 0:58 4:25 11:59 11:58 4/24/1981 Old Faithful 13:29 1:24 2:27 13:27 13:22 4/24/1981 Old Faithful 14:26 0:57 4:26 14:23 14:25 4/24/1981 Old Faithful 15:50 1:24 1:50 15:43 15:43 4/24/1981 Old Faithful 16:46 0:56 4:49 16:38 16:39 4/24/1981 Beehive 13:05 "d4'4""wtr, 2'33""steam" 4/24/1981 Beehive's Indicator 13:04 end2m42sinto erupt 4/24/1981 Castle 9:34 ie 4/24/1981 Daisy 10:00 4/24/1981 Depression 9:12 4/24/1981 Grand 15:02 3B 4/24/1981 Plume 9:12 4/24/1981 Plume 9:41 4/24/1981 Plume 10:11 4/24/1981 Plume 10:40 4/24/1981 Plume 11:10 4/24/1981 Plume 12:12 4/24/1981 Plume 13:12 4/24/1981 Plume 13:43 4/24/1981 Plume 14:14 4/24/1981 Plume 14:43 4/24/1981 Plume 15:53 4/24/1981 Plume 16:42 4/27/1981 Old Faithful 8:40 long 4/27/1981 Old Faithful 9:06 1:16 2:49 9:44 4/27/1981 Old Faithful 10:48 0:52 4:25 10:45 10:52 4/27/1981 Old Faithful 12:12 0:54 1:59 12:02 12:05 4/27/1981 Old Faithful 13:19 1:07 4:24 13:01 13:03 4/27/1981 Old Faithful 14:34 1:15 1:49 14:32 14:36 4/27/1981 Old Faithful 15:35 1:01 4:10 15:25 15:23 4/27/1981 Old Faithful 16:39 1:04 4:12 16:49 4/27/1981 Beehive 16:37 "d=4'19""" 4/27/1981 Beehive's Indicator short <7 m 4/27/1981 Castle 14:45 4/27/1981 Daisy 15:23 4/27/1981 Daisy 16:40 4/27/1981 Grand 8:35 ie 4/27/1981 Plume 9:30 4/27/1981 Plume 10:02 4/27/1981 Plume 10:43 4/27/1981 Plume 11:54 4/27/1981 Plume 13:04 4/27/1981 Plume 13:35 4/27/1981 Plume 14:06 4/27/1981 Plume 14:41 4/27/1981 Plume 16:36 4/28/1981 Old Faithful 9:23 4:10 9:21 4/28/1981 Old Faithful 10:36 1:13 4:15 10:30 10:37 4/28/1981 Old Faithful 11:47 1:11 4:17 11:46 11:50 4/28/1981 Old Faithful 13:07 1:20 4:23 12:53 13:01 4/28/1981 Old Faithful 14:17 1:10 2:23 14:16 14:24 4/28/1981 Old Faithful 15:19 1:02 4:15 15:05 15:23 4/28/1981 Old Faithful 16:30 1:19 4:01 16:28 16:33 4/28/1981 Old Faithful 20:09 2:45 20:04 4/28/1981 Beehive 13:50 "d=4'42""" 4/28/1981 Beehive's Indicator short ~8m 4/28/1981 Plume 8:34 4/28/1981 Plume 9:14 4/28/1981 Plume 10:36 4/28/1981 Plume 11:12 4/28/1981 Plume 11:50 4/28/1981 Plume 12:30 4/28/1981 Plume 13:10 4/28/1981 Plume 13:45 4/28/1981 Plume 14:15 4/28/1981 Plume 14:50 4/28/1981 Plume 15:29 4/29/1981 Old Faithful 9:20 2:26 9:17 4/29/1981 Old Faithful 10:24 1:04 4:20 10:11 10:16 4/29/1981 Old Faithful 11:52 1:28 4:26 11:37 11:39 4/29/1981 Old Faithful 13:05 1:13 4:06 13:09 4/29/1981 Old Faithful 14:23 1:18 4:02 14:06 14:17 4/29/1981 Old Faithful 15:51 1:28 1:41 15:47 15:35 4/29/1981 Old Faithful 18:51 1:00 4:33 16:35 16:40 4/29/1981 Aurum 12:53 4/29/1981 Castle 8:20 ie 4/29/1981 Grand 15:41 ie 4/29/1981 Great Fountain 13:30 ie 4/29/1981 Plume 8:36 4/29/1981 Plume 9:11 4/29/1981 Plume 10:12 4/29/1981 Plume 10:43 4/29/1981 Plume 12:33 4/29/1981 Plume 14:24 4/30/1981 Old Faithful 8:29 1:51 4/30/1981 Old Faithful 9:20 0:51 4:27 9:17 9:18 4/30/1981 Old Faithful 10:40 1:20 4:17 10:35 10:37 4/30/1981 Old Faithful 11:54 1:14 2:13 11:52 11:55 4/30/1981 Old Faithful 12:43 0:49 4:08 12:48 4/30/1981 Old Faithful 14:12 1:19 1:40 14:01 13:59 4/30/1981 Old Faithful 15:05 0:53 4:16 15:01 4/30/1981 Old Faithful 16:17 1:12 1:44 16:09 16:20 4/30/1981 Old Faithful 17:08 0:51 4:19 17:04 17:06 4/30/1981 Beehive 9:46 "d4'22""wtr,2'52""stm" 4/30/1981 Beehive's Indicator 9:36 stop2m19sintoerupt 4/30/1981 Castle 10:10 4/30/1981 Daisy 12:34 ie 4/30/1981 Depression 10:22 4/30/1981 Fan & Mortar overnite 4/30/1981 Grand 10:06 2B? 4/30/1981 Grand ~18:40 4/30/1981 Plume 8:28 4/30/1981 Plume 9:02 4/30/1981 Plume 9:34 4/30/1981 Plume 10:06 4/30/1981 Plume 12:01 4/30/1981 Riverside 17:59 5/1/1981 Old Faithful 9:06 ~9:15 5/1/1981 Old Faithful 10:26 1:20 2:00 10:20 10:21 5/1/1981 Old Faithful 11:31 1:05 4:31 11:14 11:17 5/1/1981 Old Faithful 12:57 1:26 4:07 12:47 12:47 5/1/1981 Old Faithful 14:06 1:09 4:31 14:05 14:09 5/1/1981 Old Faithful 15:34 1:28 2:03 15:22 15:24 5/1/1981 Old Faithful 16:22 0:48 4:21 16:21 16:25 5/1/1981 Old Faithful 17:43 1:21 2:12 17:37 17:37 5/1/1981 Old Faithful 18:37 0:54 4:58 18:30 18:37 5/1/1981 Beehive 15:05 ie 5/1/1981 Castle 16:13 5/1/1981 Depression 12:36 5/1/1981 Dome active 5/1/1981 Grand 13:30 VR 5/2/1981 Old Faithful 9:58 4:35 none 10:04 5/2/1981 Old Faithful 11:22 1:24 2:04 11:14 11:16 5/2/1981 Old Faithful 12:14 0:52 4:54 12:08 12:14 5/2/1981 Old Faithful 13:40 1:26 2:40 13:32 13:35 5/2/1981 Old Faithful 14:31 0:51 ~4:43 14:41 5/2/1981 Old Faithful 15:58 1:27 2:03 15:57 15:51 5/2/1981 Old Faithful 16:50 0:52 4:42 16:47 16:52 5/2/1981 Old Faithful 18:13 1:23 2:02 18:09 18:10 5/2/1981 Old Faithful 19:11 0:58 4:53 19:09 19:05 5/2/1981 Old Faithful 20:32 1:21 4:10 20:28 20:32 5/2/1981 Old Faithful 21:47 1:15 1:44 21:44 21:48 5/2/1981 Old Faithful 22:44 0:57 4:25 22:32 22:36 5/3/1981 Old Faithful 8:56 3:39 8:50 5/3/1981 Old Faithful 10:11 1:15 4:25 10:01 10:05 5/3/1981 Old Faithful 11:28 1:17 1:47 11:27 11:29 5/3/1981 Old Faithful 12:24 0:56 4:17 12:16 12:17 5/3/1981 Old Faithful 13:48 1:24 2:03 13:41 13:39 5/3/1981 Old Faithful 14:43 0:55 4:42 14:35 14:39 5/3/1981 Old Faithful 15:59 1:16 4:37 16:03 5/3/1981 Old Faithful 17:12 1:13 4:29 17:09 17:16 5/3/1981 Old Faithful 18:35 1:23 3:39 18:33 18:29 5/3/1981 Old Faithful 19:49 1:14 2:12 19:41 19:45 5/3/1981 Old Faithful 20:42 0:53 4:48 20:41 20:44 5/3/1981 Old Faithful 22:02 1:20 3:41 21:57 22:02 5/3/1981 Old Faithful 23:34 1:32 2:24 23:15 23:14 5/3/1981 Atomizer 14:31 2' eruption 5/3/1981 Aurum 13:16 d=7s 5/3/1981 Beehive 12:47 ie 5/3/1981 Castle 11:45 ie 5/3/1981 Daisy 16:37 5/3/1981 Grand 8:40 ie 5/3/1981 Grand 17:09 "2B d=10'51""" 5/3/1981 Lion active 5/3/1981 Plume 13:01 5/3/1981 Riverside 8:45 ie 5/3/1981 Riverside 15:19 5/4/1981 Old Faithful 9:51 4:17 9:44 5/4/1981 Old Faithful 11:16 1:25 2:20 11:05 11:05 5/4/1981 Old Faithful 12:09 0:53 4:29 12:03 12:10 5/4/1981 Old Faithful 13:27 1:18 2:14 13:26 5/4/1981 Old Faithful 14:21 0:54 4:27 14:17 14:21 5/4/1981 Old Faithful 15:38 1:17 4:14 15:38 5/4/1981 Old Faithful 16:48 1:10 4:03 16:48 16:53 5/4/1981 Old Faithful 18:01 1:13 2:53 17:58 18:00 5/4/1981 Old Faithful 19:03 1:02 4:28 18:48 19:03 5/4/1981 Old Faithful 20:21 1:18 2:35 20:18 20:21 5/4/1981 Old Faithful 21:22 1:01 4:29 21:15 21:19 5/4/1981 Old Faithful 22:42 1:20 4:28 22:32 22:38 5/4/1981 Artemisia 13:55 ie 5/4/1981 Daisy 12:53 5/4/1981 Daisy 14:32 5/4/1981 Daisy 21:17 ie 5/4/1981 Giantess 8:30 ie 5/4/1981 Giantess 9:05 water 5/4/1981 Giantess 9:45 water 5/4/1981 Grand 13:06 1B 5/4/1981 Great Fountain ~20:10 5/4/1981 Plume 17:46 5/4/1981 Vault 8:40 VR drained 5/5/1981 Old Faithful 0:06 1:24 1:44 23:54 0:00 5/5/1981 Old Faithful 9:07 2:02 9:03 5/5/1981 Old Faithful 9:56 0:49 4:44 none 9:59 5/5/1981 Old Faithful 11:21 1:25 2:08 11:12 11:16 5/5/1981 Old Faithful 12:10 0:49 4:58 12:18 12:16 5/5/1981 Old Faithful 13:42 1:32 2:04 13:27 13:31 5/5/1981 Old Faithful ~14:29 0:47 ~4:00 14:34 5/5/1981 Old Faithful 16:05 1:36 1:57 15:42 15:43 5/5/1981 Old Faithful 16:59 0:54 4:50 16:47 16:57 5/5/1981 Old Faithful 18:26 1:27 2:15 18:16 18:19 5/5/1981 Old Faithful 19:13 0:47 4:XX 19:20 5/5/1981 Old Faithful 20:44 1:31 2:05 20:38 20:27 5/5/1981 Old Faithful 21:33 0:49 4:10 21:36 5/5/1981 Old Faithful 22:51 1:18 2:52 22:49 5/5/1981 Beehive 16:10 5/5/1981 Castle ~15:55 VR 5/5/1981 Grand 16:15 1B 5/5/1981 Plume 16:55 5/6/1981 Old Faithful 0:25 1:34 2:05 23:55 5/6/1981 Old Faithful 9:37 4:46 9:22 5/6/1981 Old Faithful 10:54 1:22 2:01 10:47 10:57 5/6/1981 Old Faithful 11:51 0:52 4:54 11:51 5/6/1981 Old Faithful 13:11 1:20 2:29 none 13:12 5/6/1981 Old Faithful 14:05 0:54 4:05 14:10 5/6/1981 Old Faithful 15:23 1:18 2:17 15:20 15:20 5/6/1981 Old Faithful 16:22 0:59 4:58 16:14 16:18 5/6/1981 Old Faithful 17:47 1:25 2:08 17:35 17:44 5/6/1981 Old Faithful 18:36 0:49 4:07 18:40 5/6/1981 Old Faithful 19:57 1:21 2:18 19:46 19:50 5/6/1981 Old Faithful 20:50 0:53 3:32 20:45 20:52 5/6/1981 Old Faithful 22:06 1:16 2:28 22:05 22:00 5/6/1981 Old Faithful 23:00 0:54 ~4 23:04 5/6/1981 Artemisia 15:14 5/6/1981 Beehive 16:42 5/6/1981 Castle 11:15 ie 5/6/1981 Castle 20:35 ie 5/6/1981 Daisy 15:18 5/6/1981 Daisy 16:52 5/6/1981 Daisy 18:28 5/6/1981 Grand 9:55 ie 5/6/1981 Grand 17:26 2B 5/6/1981 Great Fountain 10:00 VR 5/6/1981 Great Fountain 15:11 VR 5/6/1981 Grotto Fountain 13:48 5/6/1981 Oblong 15:32 VR 5/6/1981 Oblong 15:33 5/6/1981 Plume 13:20 5/6/1981 Plume 15:20 5/6/1981 Riverside 8:00 overflowing 5/6/1981 Riverside 15:12 5/7/1981 Old Faithful 9:09 5/7/1981 Old Faithful 10:31 1:22 2:05 8:57 10:26 5/7/1981 Old Faithful 11:25 0:54 4:31 10:21 11:22 5/7/1981 Old Faithful 12:51 1:26 2:15 11:21 12:42 5/7/1981 Old Faithful 13:45 0:54 4:22 12:40 13:46 5/7/1981 Old Faithful 15:01 1:16 4:29 13:38 15:00 5/7/1981 Old Faithful 16:27 1:26 2:18 15:01 16:20 5/7/1981 Old Faithful 17:21 0:54 4:09 16:18 17:20 5/7/1981 Old Faithful 18:46 1:25 2:12 17:16 18:35 5/7/1981 Old Faithful 19:41 0:55 4:41 18:38 19:41 5/7/1981 Old Faithful 21:00 1:19 2:24 19:40 21:01 5/7/1981 Old Faithful 21:57 0:57 4:24 21:57 5/7/1981 Old Faithful 23:14 1:17 ~2 23:12 23:14 5/7/1981 Castle 15:44 5/7/1981 Grand 18:44 ie 5/7/1981 Plume 12:45 5/7/1981 Plume 14:34 5/7/1981 Plume 15:07 5/7/1981 Riverside 10:55 VR 5/7/1981 White Dome 4:06 5/8/1981 Old Faithful ~7:25 ~1:30 5/8/1981 Old Faithful 8:05 0:40 4:30 8:04 8:10 5/8/1981 Old Faithful 9:33 1:28 1:44 9:24 9:23 5/8/1981 Old Faithful 10:26 0:53 4:24 10:17 10:22 5/8/1981 Old Faithful 11:54 1:28 1:50 10:37 11:43 5/8/1981 Old Faithful 12:50 0:56 4:40 12:39 12:42 5/8/1981 Old Faithful 14:22 1:32 1:52 14:04 14:04 5/8/1981 Old Faithful 15:15 0:53 4:51 15:03 15:14 5/8/1981 Old Faithful 16:33 1:18 2:05 16:29 16:34 5/8/1981 Old Faithful 17:34 1:01 4:17 17:20 17:24 5/8/1981 Old Faithful 18:57 1:23 2:15 18:47 18:48 5/8/1981 Old Faithful 19:52 0:55 4:28 19:50 19:52 5/8/1981 Old Faithful 21:19 1:27 1:59 21:07 21:10 5/8/1981 Old Faithful 22:08 0:49 4:40 22:06 22:11 5/8/1981 Old Faithful 23:33 1:25 2:01 23:26 23:28 5/8/1981 Beehive 19:09 5/8/1981 Castle 10:50 ie 5/8/1981 Grand 21:08 ie 5/8/1981 Riverside 21:15 5/9/1981 Old Faithful 0:36 1:03 long 0:22 0:25 5/9/1981 Old Faithful 9:04 1:51 5/9/1981 Old Faithful 10:00 0:56 4:32 9:48 9:53 5/9/1981 Old Faithful 11:22 1:22 2:06 11:14 11:12 5/9/1981 Old Faithful 12:23 1:01 4:36 12:10 12:23 5/9/1981 Old Faithful 13:50 1:27 4:35 13:36 13:41 5/9/1981 Old Faithful 14:59 1:09 ~4:11 14:55 13:07 5/9/1981 Old Faithful 16:24 1:25 4:20 16:11 16:13 5/9/1981 Old Faithful 17:49 1:25 2:03 17:30 17:40 5/9/1981 Old Faithful 18:40 0:51 4:29 18:51 5/9/1981 Old Faithful 19:59 1:19 2:32 19:56 19:58 5/9/1981 Old Faithful 20:58 0:59 4:32 20:56 20:57 5/9/1981 Old Faithful 22:22 1:24 2:03 22:18 22:16 5/9/1981 Old Faithful 23:19 0:57 4:03 23:17 23:14 5/9/1981 Beehive 11:46 ie 5/9/1981 Castle 13:55 5/9/1981 Daisy 11:29 5/9/1981 Daisy 13:14 5/9/1981 Daisy 19:58 5/9/1981 Grand 14:41 3B 5/9/1981 Great Fountain 15:41 5/9/1981 Grotto Fountain 12:50 5/9/1981 Plume 12:26 5/9/1981 Plume 16:21 5/10/1981 Old Faithful 0:35 1:16 3:53 0:32 0:33 5/10/1981 Old Faithful 8:51 2:08 5/10/1981 Old Faithful 9:46 0:55 4:19 9:38 9:46 5/10/1981 Old Faithful 11:19 1:33 2:16 10:57 11:02 5/10/1981 Old Faithful 12:03 0:44 4:40 12:14 5/10/1981 Old Faithful 13:30 1:27 2:03 12:18 13:23 5/10/1981 Old Faithful 14:17 0:47 4:33 14:22 5/10/1981 Old Faithful 15:45 1:28 2:07 15:33 15:35 5/10/1981 Old Faithful 16:37 0:52 4:17 16:30 16:37 5/10/1981 Old Faithful 17:57 1:20 1:57 17:50 17:53 5/10/1981 Old Faithful 18:55 0:58 4:11 18:42 18:49 5/10/1981 Old Faithful 20:09 1:14 3:34 20:11 5/10/1981 Old Faithful 21:31 1:22 4:25 21:22 21:19 5/10/1981 Old Faithful 22:46 1:15 3:13 22:40 22:49 5/10/1981 Beehive 11:52 ie 5/10/1981 Castle 9:36 ie 5/10/1981 Daisy 10:52 ie 5/10/1981 Daisy 12:25 5/10/1981 Daisy 15:41 5/10/1981 Grand 11:37 2B 5/10/1981 Great Fountain 10:01 5/10/1981 Great Fountain 21:15 VR d=15' 5/10/1981 Lion 11:24 5/10/1981 Lion 14:16 5/10/1981 Lion 17:50 5/10/1981 Oblong 13:52 ie 5/10/1981 Plume 9:12 5/10/1981 Plume 9:46 5/10/1981 Rift active 5/10/1981 Riverside 13:07 5/11/1981 Old Faithful 0:06 1:20 3:00 23:58 23:53 5/11/1981 Old Faithful 7:15 3:15 5/11/1981 Old Faithful 8:19 1:04 4:00 8:23 5/11/1981 Old Faithful 9:48 1:29 short 9:36 5/11/1981 Old Faithful 10:40 0:52 4:05 10:37 9:37 5/11/1981 Old Faithful 12:09 1:29 2:20 11:57 11:54 5/11/1981 Old Faithful 12:57 0:48 4:27 12:55 13:05 5/11/1981 Old Faithful 14:23 1:26 2:16 14:18 14:15 5/11/1981 Old Faithful 15:17 0:54 4:22 15:13 15:17 5/11/1981 Old Faithful 16:46 1:29 1:55 16:32 16:33 5/11/1981 Old Faithful 17:39 0:53 4:15 17:24 17:37 5/11/1981 Old Faithful 19:02 1:23 2:10 18:58 18:55 5/11/1981 Old Faithful 19:54 0:52 4:19 19:50 19:56 5/11/1981 Old Faithful 21:14 1:20 2:13 21:11 21:02 5/11/1981 Old Faithful 22:11 0:57 ~4:00 22:09 5/11/1981 Old Faithful 23:26 1:15 2:05 23:14 23:23 5/11/1981 Dome active 5/11/1981 Great Fountain 5:05 d=50' 5/12/1981 Old Faithful 0:13 0:47 4:40 0:12 0:18 5/12/1981 Old Faithful 10:00 ~2:00 9:51 5/12/1981 Old Faithful 10:57 0:57 4:50 10:49 10:52 5/12/1981 Old Faithful 12:19 1:22 2:03 12:15 12:17 5/12/1981 Old Faithful 13:19 1:00 4:59 13:07 13:11 5/12/1981 Old Faithful 14:44 1:25 2:02 14:34 14:40 5/12/1981 Old Faithful 15:42 0:58 4:45 15:31 15:36 5/12/1981 Old Faithful 17:00 1:18 4:30 16:59 16:58 5/12/1981 Old Faithful 18:15 1:15 1:49 18:11 18:18 5/12/1981 Old Faithful 19:10 0:55 4:25 19:06 19:04 5/12/1981 Old Faithful 20:30 1:20 2:17 20:24 20:28 5/12/1981 Old Faithful 21:33 1:03 4:44 21:22 21:25 5/12/1981 Old Faithful 22:53 1:20 2:01 22:50 22:53 5/12/1981 Old Faithful 23:49 0:56 ~4:00 23:43 23:45 5/12/1981 Beehive 23:45 5/12/1981 Castle 10:00 ie water 5/12/1981 Castle 19:40 ie 5/12/1981 Castle 22:50? water 5/12/1981 Daisy 17:30 VR 5/12/1981 Grand 21:20 ie 5/12/1981 Riverside 10:43 5/12/1981 Riverside 17:10 VR 5/13/1981 Old Faithful ~9:18 ~4:45 5/13/1981 Old Faithful 10:33 1:15 1:54 10:31 10:38 5/13/1981 Old Faithful 11:32 0:59 4:40 11:27 11:25 5/13/1981 Old Faithful 12:52 1:20 2:13 12:43 12:52 5/13/1981 Old Faithful 13:54 1:02 4:36 13:32 13:46 5/13/1981 Old Faithful 15:28 1:34 2:16 15:07 15:07 5/13/1981 Old Faithful 16:19 0:51 3:39 16:24 5/13/1981 Old Faithful 17:46 1:27 2:16 17:32 17:27 5/13/1981 Old Faithful 18:43 0:57 4:38 18:39 18:39 5/13/1981 Old Faithful 20:04 1:21 2:20 20:04 20:03 5/13/1981 Old Faithful 20:56 0:52 5:00 20:52 21:00 5/13/1981 Old Faithful 22:35 1:39 1:34 22:12 22:18 5/13/1981 Old Faithful 23:35 1:00 5:21 23:18 23:20 5/13/1981 Beehive 14:20 "14h,35m interval" 5/13/1981 Castle 14:52 5/13/1981 Daisy 10:37 5/13/1981 Daisy 12:17 5/13/1981 Grand 18:55 5/13/1981 Great Fountain ~15:50 VR water 5/13/1981 Riverside 13:37 5/13/1981 Riverside 19:31 5/14/1981 Old Faithful 9:18 3:15 5/14/1981 Old Faithful 10:26 1:08 4:06 10:23 10:27 5/14/1981 Old Faithful 11:46 1:20 1:55 11:36 11:37 5/14/1981 Old Faithful 12:40 0:54 4:39 12:31 12:41 5/14/1981 Old Faithful 14:03 1:23 3:54 13:54 13:57 5/14/1981 Old Faithful 15:17 1:14 3:56 15:07 15:17 5/14/1981 Old Faithful 16:28 1:11 3:16 16:24 16:31 5/14/1981 Old Faithful 17:38 1:10 4:03 17:33 17:34 5/14/1981 Old Faithful 18:56 1:18 3:46 18:51 5/14/1981 Old Faithful 20:28 1:32 4:27 20:05 20:08 5/14/1981 Old Faithful 21:47 1:19 2:16 21:42 21:46 5/14/1981 Old Faithful 22:46 0:59 3:44 22:40 22:42 5/14/1981 Artemisia 16:15 d=10 5/14/1981 Beehive 9:52 5/14/1981 Castle 9:47 5/14/1981 Castle 18:50 5/14/1981 Daisy 11:13 5/14/1981 Daisy 12:49 5/14/1981 Daisy 16:15 5/14/1981 Depression 15:10 5/14/1981 Grand 13:20 2B 5/14/1981 Great Fountain 10:10 steam 5/14/1981 Grotto Fountain 14:22 5/14/1981 Plume 11:37 5/14/1981 Plume 13:59 5/14/1981 Rift active 5/14/1981 Riverside 14:25 5/15/1981 Old Faithful 0:17 1:31 4:14 23:54 23:58 5/15/1981 Old Faithful 8:40 5/15/1981 Old Faithful 9:49 1:09 4:22 9:41 5/15/1981 Old Faithful 11:05 1:16 2:15 11:02 11:05 5/15/1981 Old Faithful 12:09 1:04 4:38 11:50 12:00 5/15/1981 Old Faithful 13:22 1:13 4:25 13:21 13:27 5/15/1981 Old Faithful 14:38 1:16 2:12 14:37 14:31 5/15/1981 Old Faithful 15:36 0:58 4:36 15:23 15:33 5/15/1981 Old Faithful 17:00 1:24 2:08 16:46 16:47 5/15/1981 Old Faithful 18:03 1:03 4:45 17:48 17:52 5/15/1981 Old Faithful 19:17 1:14 2:42 19:23 5/15/1981 Old Faithful 20:35 1:18 2:57 20:20 20:18 5/15/1981 Artemisia 15:12 d=12 5/15/1981 Aurum 13:49 5/15/1981 Beehive 00:30? 5/15/1981 Castle 14:22 5/15/1981 Daisy 16:10 d=5' 5/15/1981 Grand 9:35 ie 5/15/1981 Great Fountain ~11:45 VR 5/15/1981 Grotto Fountain 14:00 5/15/1981 Oblong 16:10 d=8' 5/15/1981 Plume 11:16 5/15/1981 Plume 11:46 5/15/1981 Plume 12:54 5/15/1981 Riverside 16:00 5/16/1981 Old Faithful ~8:50 5/16/1981 Old Faithful 10:10 1:20 2:08 9:57 10:05 5/16/1981 Old Faithful 11:00 0:50 4:29 11:00 11:15 5/16/1981 Old Faithful 12:24 1:24 2:00 12:10 12:18 5/16/1981 Old Faithful 13:16 0:52 4:50 13:09 13:16 5/16/1981 Old Faithful 14:46 1:30 1:40 14:31 14:36 5/16/1981 Old Faithful 15:39 0:53 4:52 15:35 5/16/1981 Old Faithful 17:08 1:29 1:38 16:56 16:59 5/16/1981 Old Faithful 18:01 0:53 4:45 17:50 17:57 5/16/1981 Old Faithful 19:18 1:17 4:16 19:16 19:21 5/16/1981 Old Faithful 20:48 1:30 4:10 20:29 20:34 5/16/1981 Old Faithful 22:03 1:15 3:31 22:00 22:04 5/16/1981 Old Faithful 23:17 1:14 1:57 23:10 23:12 5/16/1981 Beehive 11:15 5/16/1981 Castle 13:37 5/16/1981 Daisy 12:19 5/16/1981 Daisy 13:50 5/16/1981 Depression 18:08 5/16/1981 Grand 13:35 5/16/1981 Great Fountain 8:20 ieVR 5/16/1981 Oblong 11:33 5/16/1981 Plume 11:14 5/16/1981 Riverside ~11:45 VR 5/17/1981 Old Faithful 0:09 0:52 4:42 0:06 0:09 5/17/1981 Old Faithful 8:26 long 5/17/1981 Old Faithful 9:31 1:05 4:16 9:42 5/17/1981 Old Faithful 10:50 1:19 2:15 10:41 10:46 5/17/1981 Old Faithful 11:39 0:49 4:23 11:36 11:45 5/17/1981 Old Faithful 13:12 1:33 2:11 12:57 12:57 5/17/1981 Old Faithful ~14:05 0:53 ~4:30 14:07 5/17/1981 Old Faithful 15:27 1:22 1:59 15:21 15:23 5/17/1981 Old Faithful 16:20 0:53 4:32 16:13 16:19 5/17/1981 Old Faithful 17:40 1:20 1:41 17:35 17:38 5/17/1981 Old Faithful 18:30 0:50 4:17 18:30 18:29 5/17/1981 Old Faithful 20:02 1:32 2:10 19:47 19:45 5/17/1981 Old Faithful 21:04 1:02 5:05 20:50 20:54 5/17/1981 Artemisia 11:15 d=10' 5/17/1981 Beehive 16:08 5/17/1981 Castle 9:24 5/17/1981 Castle 19:00 5/17/1981 Crested Pool 9:15 4' to 5' 5/17/1981 Daisy 11:16 5/17/1981 Daisy 14:24 5/17/1981 Grand 8:20 3B 5/17/1981 Grand 18:50 ie 2B 5/17/1981 Great Fountain 15:20 ie "late, just finishing" 5/17/1981 Grotto 14:10 5/17/1981 Grotto Fountain 14:08 5/17/1981 Oblong 12:05 5/17/1981 Oblong 20:15 5/17/1981 Plume 13:14 5/17/1981 Plume 14:15 5/17/1981 Plume 14:47 5/17/1981 Plume 17:16 5/17/1981 Riverside 8:30 d=12' 5/17/1981 Riverside 14:08 d=20' 5/17/1981 South Grotto Fountain 14:11 5/18/1981 Old Faithful 7:30 long 5/18/1981 Old Faithful 8:37 1:07 4:39 8:34 5/18/1981 Old Faithful 9:52 1:15 2:23 9:51 9:57 5/18/1981 Old Faithful 10:57 1:05 4:49 10:46 10:50 5/18/1981 Old Faithful 12:14 1:17 4:00 12:12 12:17 5/18/1981 Old Faithful 13:30 1:16 4:05 13:28 13:27 5/18/1981 Old Faithful 14:53 1:23 2:06 14:42 14:42 5/18/1981 Old Faithful 15:40 0:47 4:36 15:45 5/18/1981 Old Faithful 17:09 1:29 2:16 16:50 16:55 5/18/1981 Old Faithful 18:07 0:58 4:46 17:54 18:04 5/18/1981 Old Faithful 19:20 1:13 4:25 19:20 19:20 5/18/1981 Old Faithful 20:39 1:19 4:22 20:31 20:38 5/18/1981 Old Faithful 21:58 1:19 1:52 21:54 21:57 5/18/1981 Old Faithful 22:43 0:45 ~4:00 22:50 5/18/1981 Artemisia 12:30 5/18/1981 Beehive 7:55 5/18/1981 Castle 14:28 ie 5/18/1981 Daisy 12:16 5/18/1981 Daisy 13:58 5/18/1981 Daisy 15:42 5/18/1981 Grand 19:00 5/18/1981 Great Fountain 14:13 VR 5/18/1981 Grotto Fountain 11:59 5/18/1981 Oblong 14:55 5/18/1981 Plume 10:52 5/18/1981 Rift active 5/18/1981 Riverside 9:20 VR 5/18/1981 Riverside 14:12 5/18/1981 White Dome 14:18 VR 5/19/1981 Old Faithful 0:13 1:30 2:01 0:01 23:57 5/19/1981 Old Faithful 9:04 4:29 9:01 5/19/1981 Old Faithful 10:23 1:19 1:57 10:15 10:22 5/19/1981 Old Faithful 11:16 0:53 4:27 11:11 11:15 5/19/1981 Old Faithful 12:34 1:18 3:19 12:34 5/19/1981 Old Faithful 13:48 1:14 3:27 13:46 13:41 5/19/1981 Old Faithful 15:03 1:15 3:35 14:59 14:51 5/19/1981 Old Faithful 16:20 1:17 3:55 16:13 16:13 5/19/1981 Old Faithful 17:34 1:14 3:54 17:29 17:27 5/19/1981 Old Faithful 18:55 1:21 4:09 18:50 18:41 5/19/1981 Old Faithful 20:09 1:14 2:23 20:08 20:14 5/19/1981 Old Faithful 21:18 1:09 5:21 21:01 21:06 5/19/1981 Old Faithful 22:34 1:16 1:51 22:32 22:40 5/19/1981 Old Faithful 23:25 0:51 5:03 23:23 23:29 5/19/1981 Beehive 0:05 I=16h10m 5/19/1981 Beehive 15:24 ie 5/19/1981 Castle 11:25 ie 5/19/1981 Daisy 13:27 5/19/1981 Daisy 15:14 5/19/1981 Dome active 5/19/1981 Fan & Mortar 9:15 5/19/1981 Grand 16:36 2B 5/19/1981 Lion 9:04 ie 5/19/1981 Oblong 16:05 5/19/1981 Plume 10:42 5/19/1981 Plume 11:13 5/20/1981 Old Faithful 8:35 ie short 5/20/1981 Old Faithful 10:00 3:40 9:49 ~9:27 5/20/1981 Old Faithful 11:11 1:11 2:13 11:06 11:11 5/20/1981 Old Faithful ~12:04 0:53 4:15 12:06 5/20/1981 Old Faithful 13:24 1:20 4:48 13:24 13:20 5/20/1981 Old Faithful 14:39 1:15 4:00 14:44 5/20/1981 Old Faithful 16:00 1:21 4:20 13:47 15:52 5/20/1981 Old Faithful 17:15 1:15 2:35 17:10 17:15 5/20/1981 Old Faithful 18:15 1:00 long 18:24 5/20/1981 Old Faithful 19:46 1:31 1:46 19:28 ~19:30 5/20/1981 Old Faithful 20:30 0:44 4:35 20:29 20:35 5/20/1981 Old Faithful 21:59 1:29 1:54 20:42 21:48 5/20/1981 Old Faithful 22:42 0:43 4:34 22:51 5/20/1981 Beehive 8:30 ie 5/20/1981 Castle 15:30 5/20/1981 Dome active 5/20/1981 Grand 10:00 VR 5/20/1981 Grand 18:37 ie 5/20/1981 Great Fountain 14:00 ieVR 5/20/1981 Grotto 9:50 VR 5/21/1981 Old Faithful 0:01 1:19 2:19 0:00 0:00 5/21/1981 Old Faithful 8:00 ie 5/21/1981 Old Faithful 8:52 0:52 long 5/21/1981 Old Faithful 10:06 1:14 2:11 9:59 10:10 5/21/1981 Old Faithful 11:03 0:57 4:38 10:59 11:00 5/21/1981 Old Faithful 12:37 1:34 3:06 12:18 12:23 5/21/1981 Old Faithful 13:37 1:00 4:33 13:30 13:41 5/21/1981 Old Faithful 14:55 1:18 4:17 14:55 14:55 5/21/1981 Old Faithful 16:02 1:07 4:09 16:02 16:04 5/21/1981 Old Faithful 17:26 1:24 3:16 17:09 17:18 5/21/1981 Old Faithful 18:29 1:03 4:52 18:24 18:32 5/21/1981 Old Faithful 19:52 1:23 2:06 19:51 19:51 5/21/1981 Old Faithful 20:45 0:53 4:46 20:39 20:44 5/21/1981 Old Faithful 22:18 1:33 2:04 22:02 22:05 5/21/1981 Old Faithful 23:14 0:56 4:24 23:04 23:10 5/21/1981 Castle 20:30 VR 5/21/1981 Great Fountain 21:43 p=9 5/21/1981 Grotto 14:13 ie 5/21/1981 Plume 12:17 5/21/1981 Riverside 14:13 ie 5/22/1981 Old Faithful 0:31 1:17 1:54 0:28 0:32 5/22/1981 Old Faithful 7:39 short 5/22/1981 Old Faithful 8:25 ie 0:46 long 5/22/1981 Old Faithful 9:57 1:32 1:58 9:44 9:40 5/22/1981 Old Faithful 10:37 0:40 4:21 10:30 10:40 5/22/1981 Old Faithful 11:57 1:20 2:13 11:52 11:53 5/22/1981 Old Faithful 12:50 0:53 4:37 12:49 12:52 5/22/1981 Old Faithful 14:15 1:25 2:11 13:57 14:07 5/22/1981 Old Faithful 15:02 0:47 4:28 14:59 15:10 5/22/1981 Old Faithful 16:24 1:22 2:12 16:12 16:20 5/22/1981 Old Faithful 17:17 0:53 4:24 17:17 17:19 5/22/1981 Old Faithful 18:44 1:27 1:49 18:40 18:35 5/22/1981 Old Faithful 19:36 0:52 4:20 19:32 19:33 5/22/1981 Old Faithful 20:59 1:23 2:16 20:48 20:52 5/22/1981 Old Faithful 22:00 1:01 5:05 21:52 21:54 5/22/1981 Old Faithful 23:16 1:16 2:02 23:22 5/22/1981 Beehive 10:15 5/22/1981 Castle 6:30 VR 5/22/1981 Castle 17:00 ie 5/22/1981 Daisy 10:40 VR 5/22/1981 Grand 8:55 ie 5/22/1981 Grand 16:49 ie 5/22/1981 Great Fountain 8:41 "2' 24"" pause" 5/22/1981 Great Fountain 18:53 "2' 5"" pause I=10h58" 5/22/1981 Great Fountain I=10h12 5/22/1981 Oblong 21:30 ie 5/23/1981 Old Faithful 0:05 0:49 5:13 0:02 0:08 5/23/1981 Old Faithful 8:44 2:06 8:36 5/23/1981 Old Faithful 9:35 0:51 4:27 9:24 9:36 5/23/1981 Old Faithful 10:58 1:23 2:15 10:49 10:53 5/23/1981 Old Faithful 12:04 1:06 4:37 11:43 11:53 5/23/1981 Old Faithful 13:23 1:19 3:53 13:19 13:22 5/23/1981 Old Faithful 14:42 1:19 4:24 14:29 14:36 5/23/1981 Old Faithful 16:02 1:20 4:38 15:52 15:59 5/23/1981 Old Faithful 17:23 1:21 2:01 17:13 17:22 5/23/1981 Old Faithful ~18:13 0:50 3:42 18:15 5/23/1981 Old Faithful 19:31 1:18 3:28 19:30 19:25 5/23/1981 Old Faithful 20:49 1:18 2:36 20:36 20:40 5/23/1981 Old Faithful 21:58 1:09 4:13 21:40 21:47 5/23/1981 Old Faithful 23:19 1:21 4:01 23:11 23:04 5/23/1981 Artemisia 14:39 5/23/1981 Aurum 11:42 5/23/1981 Beehive 18:29 5/23/1981 Castle 12:14 5/23/1981 Daisy 11:41 5/23/1981 Daisy 13:24 5/23/1981 Daisy 14:58 5/23/1981 Daisy 18:07 5/23/1981 Depression 8:44 ie 5/23/1981 Depression 15:28 ie 5/23/1981 Fan & Mortar 18:30 ieVR 5/23/1981 Fountain 13:30 ie major 5/23/1981 Grand 9:27 2B 5/23/1981 Grand 17:58 2B 5/23/1981 Great Fountain 5:11:53 "b=68"",p6m27,I10h18" 5/23/1981 Great Fountain 15:31 starting overflow 5/23/1981 Great Fountain 16:48 "I=11h,36m" 5/23/1981 Oblong 8:00 VR 5/23/1981 Plume 9:44 5/23/1981 Riverside 12:04 5/24/1981 Old Faithful 0:36 1:17 3:40 0:28 0:33 5/24/1981 Old Faithful 8:59 1:58 8:47 5/24/1981 Old Faithful 9:55 0:56 4:39 9:40 9:51 5/24/1981 Old Faithful 11:16 1:21 2:07 11:05 11:15 5/24/1981 Old Faithful 12:15 0:59 5:11 11:59 12:08 5/24/1981 Old Faithful 13:36 1:21 2:00 13:28 13:37 5/24/1981 Old Faithful 14:39 1:03 4:25 14:15 14:28 5/24/1981 Old Faithful 15:56 1:17 4:06 15:51 15:57 5/24/1981 Old Faithful 17:17 1:21 4:32 17:03 17:10 5/24/1981 Old Faithful 18:47 1:30 2:04 18:22 18:35 5/24/1981 Old Faithful 19:30 0:43 4:42 19:29 19:39 5/24/1981 Old Faithful 20:48 1:18 2:03 20:48 20:50 5/24/1981 Old Faithful 21:46 0:58 4:52 21:38 21:40 5/24/1981 Old Faithful 23:15 1:29 4:41 23:03 23:07 5/24/1981 Artemisia 20:10 ie 5/24/1981 Beehive 14:25 ie 5/24/1981 Castle 17:17 5/24/1981 Daisy 12:15 5/24/1981 Daisy 18:52 ie 5/24/1981 Daisy 20:22 5/24/1981 Depression 10:46 5/24/1981 Grand 11:14 3B 5/24/1981 Grand 20:10 1B 5/24/1981 Great Fountain 12:05 ie 5/24/1981 Great Fountain 18:00 VR "vnt emty,muchrunoff" 5/24/1981 Great Fountain 21:10 ie 5/24/1981 Oblong 9:48 5/24/1981 Plume 8:41 5/24/1981 Riverside 20:22 5/24/1981 White Dome 18:00 5/25/1981 Old Faithful 0:27 1:12 1:40 0:25 0:37 5/25/1981 Old Faithful 7:40 ~1:30 5/25/1981 Old Faithful 8:44 1:04 4:51 8:30 8:30 5/25/1981 Old Faithful 10:09 1:25 4:17 9:59 10:04 5/25/1981 Old Faithful 11:17 1:08 4:17 11:14 11:25 5/25/1981 Old Faithful 12:34 1:17 4:01 12:23 12:33 5/25/1981 Old Faithful 13:49 1:15 3:58 13:41 13:48 5/25/1981 Old Faithful 14:57 1:08 4:12 14:54 15:02 5/25/1981 Old Faithful 16:15 1:18 3:38 16:06 16:13 5/25/1981 Old Faithful 17:21 1:06 ~4:00 17:21 17:27 5/25/1981 Old Faithful 18:45 1:24 2:01 18:34 18:33 5/25/1981 Old Faithful 19:31 0:46 4:14 19:30 19:37 5/25/1981 Old Faithful 20:52 1:21 4:18 20:45 20:47 5/25/1981 Old Faithful 22:08 1:16 4:27 22:06 22:07 5/25/1981 Old Faithful 23:28 1:20 1:59 23:22 23:26 5/25/1981 Artemisia 14:02 5/25/1981 Aurum 20:16 d=11s 5/25/1981 Beehive 10:41 5/25/1981 Castle 11:20 ie steam 5/25/1981 Castle 13:10 ie water 5/25/1981 Daisy 13:16 5/25/1981 Daisy 15:01 5/25/1981 Giantess 19:30 via helicorder 5/25/1981 Giantess 19:57:22 "endB1,dp1=11m44s" 5/25/1981 Giantess "B2=4'34""23:00 min.I >17 hrs 7/8/1981 Grand 23:30 ie 3B probable 7/8/1981 Oblong 11:50 7/8/1981 Pink 19:30 ie 7/8/1981 Plume 10:34 7/8/1981 Plume 11:49 7/8/1981 Plume 12:26 7/8/1981 Plume 14:40 7/8/1981 Riverside 11:36 7/8/1981 Riverside 18:30 7/8/1981 Tilt 14:31 7/8/1981 West Flood 19:42 7/8/1981 West Triplet 6:44 ie 7:10 end 7/8/1981 West Triplet 9:12 ?end 7/8/1981 West Triplet 20:09 7/8/1981 West Triplet 21:00 7/9/1981 Old Faithful 8:21 2:20 8:20 7/9/1981 Old Faithful 9:23 1:02 4:29 9:14 9:16 7/9/1981 Old Faithful 10:39 1:16 3:36 10:38 10:40 7/9/1981 Old Faithful 11:55 1:16 2:01 11:50 11:52 7/9/1981 Old Faithful 12:55 1:00 4:35 12:45 12:56 7/9/1981 Old Faithful 14:16 1:21 4:02 14:16 14:12 7/9/1981 Old Faithful 15:28 1:12 2:04 15:27 15:31 7/9/1981 Old Faithful 16:19 0:51 4:07 16:18 16:19 7/9/1981 Old Faithful 17:46 1:27 1:43 17:36 17:24 7/9/1981 Old Faithful 18:41 0:55 4:02 18:35 18:33 7/9/1981 Old Faithful 20:00 1:19 2:54 19:55 19:56 7/9/1981 Old Faithful 20:54 0:54 4:48 21:03 7/9/1981 Old Faithful 22:12 1:18 4:12 22:04 22:14 7/9/1981 Old Faithful 23:31 1:19 4:27 23:22 23:28 7/9/1981 Artemisia 13:59 d=~16 1/2m 7/9/1981 Atomizer 11:15 minor 7/9/1981 Beehive 10:51 7/9/1981 Castle 11:31 7/9/1981 Castle 21:42 7/9/1981 Crested Pool 16:45 8' surge 7/9/1981 Daisy 7:26 7/9/1981 Daisy 9:08 7/9/1981 Daisy 10:44 7/9/1981 Daisy 12:28 7/9/1981 Daisy 14:12 7/9/1981 Depression 6:52 d=4' 7/9/1981 Flood 15:48 7/9/1981 Grand 10:48 4B 7/9/1981 Great Fountain 13:50 7/9/1981 Great Fountain 23:02 7/9/1981 Oblong 11:31 7/9/1981 Oblong 21:30 7/9/1981 Penta 18:48 ie d=~40m 7/9/1981 Plume 14:01 7/9/1981 Plume 19:04 7/9/1981 Plume 20:52 7/9/1981 Rift 6:25 ie 7/9/1981 Riverside 7:58 7/9/1981 Riverside 14:59 7/9/1981 Spasmodic 18:53 ie 7/9/1981 Tardy 18:53 ie 7/10/1981 Old Faithful 5:37 4:02 7/10/1981 Old Faithful 6:57 1:20 2:15 7/10/1981 Old Faithful 8:03 1:06 4:39 7:45 7:52 7/10/1981 Old Faithful 9:11 1:08 3:30 9:23 7/10/1981 Old Faithful 10:25 1:14 4:38 10:22 10:17 7/10/1981 Old Faithful 11:46 1:21 1:57 11:39 11:43 7/10/1981 Old Faithful 12:49 1:03 ~4:00 12:30 12:37 7/10/1981 Old Faithful 14:18 1:29 2:11 14:07 14:04 7/10/1981 Old Faithful 15:07 0:49 4:32 15:13 7/10/1981 Old Faithful 16:36 1:29 1:48 16:25 16:24 7/10/1981 Old Faithful 17:30 0:54 4:13 17:20 17:23 7/10/1981 Old Faithful 18:59 1:29 1:40 18:43 18:46 7/10/1981 Old Faithful 19:53 0:54 3:52 19:44 19:46 7/10/1981 Old Faithful 21:09 1:16 long 21:07 7/10/1981 Old Faithful 22:23 1:14 1:56 22:20 22:24 7/10/1981 Old Faithful 23:17 0:54 4:52 23:15 23:14 7/10/1981 Artemisia 10:22 7/10/1981 Aurum 18:44 7/10/1981 Beehive 18:52 7/10/1981 Beehive's Indicator 18:37 7/10/1981 Castle 7:15 7/10/1981 Castle 17:49 7/10/1981 Daisy 8:43 7/10/1981 Daisy 12:10 7/10/1981 Daisy 13:50 7/10/1981 Daisy 15:37 7/10/1981 Daisy 19:05 7/10/1981 Grand 1:55 VR "3B, I =15h7m" 7/10/1981 Grand 14:30 "I =12h,35m" 7/10/1981 Great Fountain 7:55 7/10/1981 Great Fountain 16:16 ieVR 7/10/1981 Link 23:15 ie 7/10/1981 Oblong 11:56 7/10/1981 Penta 9:49 7/10/1981 Plume 8:35 7/10/1981 Plume 9:09 7/10/1981 Plume 10:20 7/10/1981 Plume 12:33 7/10/1981 Plume 13:43 7/10/1981 Plume 18:23 7/10/1981 Rift 9:30 7/10/1981 Rift 17:50 ie end 18:09 7/10/1981 Riverside 3:50 7/10/1981 Riverside 15:37 7/10/1981 Riverside 16:54 7/10/1981 Riverside 23:58 ie 7/10/1981 Turban 18:23 still active 7/10/1981 Uncertain 9:38 7/10/1981 Uncertain 18:07 7/10/1981 Vent 18:23 still active 7/10/1981 West Triplet 8:45 VR 7/10/1981 White Dome 11:43 7/11/1981 Old Faithful 6:43 long? 7/11/1981 Old Faithful 7:37 0:54 ~5:00 8:00 7/11/1981 Old Faithful 9:00 1:23 2:02 8:51 8:58 7/11/1981 Old Faithful 9:45 0:45 ~4:38 9:45 9:51 7/11/1981 Old Faithful 11:07 1:22 2:05 10:58 11:02 7/11/1981 Old Faithful 11:59 0:52 4:16 11:57 11:58 7/11/1981 Old Faithful 13:17 1:18 2:18 13:13 13:15 7/11/1981 Old Faithful 14:13 0:56 4:35 14:09 14:14 7/11/1981 Old Faithful 15:38 1:25 2:22 15:28 15:30 7/11/1981 Old Faithful 16:31 0:53 4:52 16:31 16:38 7/11/1981 Old Faithful 17:50 1:19 2:36 17:50 17:51 7/11/1981 Old Faithful 18:58 1:08 4:40 18:44 18:50 7/11/1981 Old Faithful 20:22 1:24 4:18 20:13 20:15 7/11/1981 Old Faithful 21:36 1:14 1:55 21:35 21:38 19:15 4 conewalkers 7/11/1981 Old Faithful 22:34 0:58 4:02 22:30 22:27 Therm.burn-drunk 7/11/1981 Artemisia 15:30 7/11/1981 Atomizer 10:57 7/11/1981 Atomizer 15:26 ie major 7/11/1981 Beehive 11:22 "d=4' 32""" 7/11/1981 Beehive's Indicator 11:04 7/11/1981 Castle 13:16 ie water 7/11/1981 Castle 22:30 ie water 7/11/1981 Daisy 8:54 7/11/1981 Daisy 10:30 7/11/1981 Daisy 12:08 7/11/1981 Daisy 13:58 7/11/1981 Daisy 15:38 7/11/1981 Daisy 19:10 7/11/1981 Daisy 20:45 7/11/1981 Depression 11:16 7/11/1981 Fountain 22:48 7/11/1981 Grand 11:14 "d=12'19"", 2B" 7/11/1981 Great Fountain 13:30 5B 7/11/1981 Grotto Fountain 12:38 d=25' 7/11/1981 Grotto Fountain 19:14 d=19' 7/11/1981 Link 9:02 7/11/1981 Oblong 11:02 7/11/1981 Oblong 19:40 ie 7/11/1981 Percolator 8:00 ie 7/11/1981 Percolator 10:23 end 11:06 7/11/1981 Plume 8:49 7/11/1981 Rift 16:30 ie 7/11/1981 Riverside 13:24 ovfl 12:05 7/11/1981 Riverside 20:21 ovfl 16:30 7/11/1981 Sawmill 7:57 7/11/1981 Uncertain 10:38 7/11/1981 West Triplet 10:29 end 11:06 7/12/1981 Old Faithful 0:02 1:28 4:03 23:50 23:49 7/12/1981 Old Faithful ~6:10 long 7/12/1981 Old Faithful ~7:12 ~1:02 ~3 3/4 7:25 7/12/1981 Old Faithful 8:29 1:17 ~3:27 8:28 8:20 7/12/1981 Old Faithful 9:38 1:09 3:30 9:37 9:34 7/12/1981 Old Faithful 10:59 1:21 4:11 10:49 10:44 7/12/1981 Old Faithful 12:17 1:18 4:45 12:07 12:15 7/12/1981 Old Faithful 13:31 1:14 3:42 13:37 7/12/1981 Old Faithful 14:55 1:24 4:22 14:36 14:44 7/12/1981 Old Faithful 16:07 1:12 4:31 16:06 16:13 7/12/1981 Old Faithful 17:28 1:21 4:29 17:19 17:24 7/12/1981 Old Faithful 18:43 1:15 4:02 18:40 18:45 7/12/1981 Old Faithful 20:10 1:27 1:51 19:58 19:58 7/12/1981 Old Faithful 20:57 0:47 3:27 20:57 21:00 7/12/1981 Old Faithful 22:30 1:33 1:58 22:14 22:03 7/12/1981 Old Faithful 23:17 0:47 4:46 23:17 23:21 7/12/1981 Artemisia 10:25 d=19 1/2' 7/12/1981 Atomizer 21:31 ie major 7/12/1981 Beehive 3:28 7/12/1981 Beehive 17:08 ie 7/12/1981 Castle 8:11 7/12/1981 Castle 19:02 7/12/1981 Daisy 7:16 ie 7/12/1981 Daisy 8:55 7/12/1981 Daisy 10:29 7/12/1981 Daisy 12:19 7/12/1981 Daisy 15:45 7/12/1981 Daisy 17:27 7/12/1981 Daisy 20:41 7/12/1981 Daisy 22:17 7/12/1981 Depression 13:50 ie 7/12/1981 Depression 20:31 ie 7/12/1981 Dome 10:38 ie 7/12/1981 Dome 17:50 7/12/1981 Fan & Mortar ~2:00 VR 7/12/1981 Fountain 18:15 ie 7/12/1981 Grand 11:03 2B 7/12/1981 Great Fountain 8:21 7/12/1981 Great Fountain 15:45 7h25m 7/12/1981 Grotto 9:10 7/12/1981 Grotto 19:00 VR 7/12/1981 Grotto Fountain 9:10 7/12/1981 Grotto Fountain 15:30 ie 7/12/1981 Lion 8:26 7/12/1981 Lion 10:59 7/12/1981 Lion 14:31 7/12/1981 Oblong 14:55 ie 7/12/1981 Rift 16:30 ie 7/12/1981 Riverside 9:46 7/12/1981 Riverside 16:41 7/12/1981 South Grotto Fountain 9:12 7/12/1981 South Grotto Fountain 15:30 ie 7/12/1981 Till 16:30 ie 7/13/1981 Old Faithful 0:38 1:21 2:03 0:32 0:37 7/13/1981 Old Faithful 5:26 long 7/13/1981 Old Faithful 6:46 1:20 1:56 7/13/1981 Old Faithful 7:43 0:57 5:04 7:39 7:37 7/13/1981 Old Faithful 9:17 1:34 4:07 9:00 9:04 7/13/1981 Old Faithful 10:29 1:12 2:00 10:19 10:32 7/13/1981 Old Faithful 11:27 0:58 4:58 11:17 11:20 7/13/1981 Old Faithful 12:58 1:31 1:45 12:44 12:47 7/13/1981 Old Faithful