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Recent Geyser Activity
Interval Between Eruptions 
Most recent data collected 31 December 09
           
Compiled By Ralph Taylor
Activity for the most recent week with recorded activity
Geyser Start Date Last Update Intervals Min Mean Median Max Coef. Of Variation
Aurum 24-Dec-09 31-Dec-09 39 03:07 04:15 03:58 07:25 24.62%
Beehive 24-Dec-09 31-Dec-09 10 10:15 18:26 16:15 46:30 57.60%
Boardwalk                 Dormant - No eruptions since July 2006, no longer monitored
Depression 24-Dec-09 31-Dec-09 64 02:11 02:47 02:43 04:07 13.57%
Lion (series) 24-Dec-09 31-Dec-09 2 43:37 44:45 44:45 45:53  
Little Cub 24-Dec-09 31-Dec-09 294 01:13 02:14 01:35 26:27 261.21%
Little Squirt 24-Dec-09 31-Dec-09 2 75:50 79:37 79:37 83:24 6.72% Logger removed 9 Sep 09; eruptions from then to late Sept. from OFVC log.
North Goggles                 Dormant - last eruption 18:28 on 30 September 2004; no longer monitored
Plate 24-Dec-09 31-Dec-09 8 00:45 14:38 14:34 30:49 89.41%
Plume 24-Dec-09 31-Dec-09 164 0:49 1:01 1:00 1:31 13.07%
Slot                 Dormant - last eruption 10:32 on 10 November 2007; no longer monitored
                 
Artemisia 27-Oct-09 3-Nov-09 7 17:56 22:16 21:31 29:03 15.97%
Baby Daisy                 Dormant - last eruption 09:50 on 8 December 2004
Castle (w/o minors) 24-Dec-09 31-Dec-09 5 13:32 13:55 14:02 14:12 1.95%
Castle (minor-major) 24-Dec-09 31-Dec-09 6 04:24 06:46 06:51 09:32 31.29%
Castle (1st post minor) 24-Dec-09 31-Dec-09 4 15:08 15:28 15:15 16:16 3.44%
Daisy 24-Dec-09 31-Dec-09 62 02:20 02:42 02:44 03:10 7.13%
Grand 25-Nov-09 2-Dec-09 20 06:48 08:45 08:48 11:12 12.75% No data for week of 17-24 August due to logger failure
Grotto 24-Dec-09 31-Dec-09 21 00:42 07:34 06:20 43:36 113.27%
Grotto (dur>4h50m) 24-Dec-09 31-Dec-09 1          
Grotto (dur>12h00m) 24-Dec-09 31-Dec-09 1          
Oblong 24-Dec-09 31-Dec-09 34 03:18 04:51 04:35 07:56 23.43%
Old Faithful (all intervals) 24-Dec-09 31-Dec-09 110 00:51 01:31 01:32 01:55 9.97%
Old Faithful (Long) 24-Dec-09 31-Dec-09 105 01:20 01:33 01:32 01:55 7.23%
Old Faithful (Short) 24-Dec-09 31-Dec-09 5 00:51 01:03 01:07 01:13 13.68%
Pyramid 27-Aug-09 3-Sep-09 59 02:37 02:53 02:53 03:32 6.07%
Rift 24-Dec-09 31-Dec-09 8 14:44 19:11 19:00 24:16 17.56%
Riverside 27-Oct-09 3-Nov-09 27 05:43 06:01 05:50 06:40 5.34%
Riverside (Long) 27-Oct-09 3-Nov-09 7 06:27 06:32 06:32 06:40 1.26%
Riverside (Short) 27-Oct-09 3-Nov-09 20 05:43 05:50 05:49 05:59 1.21%
West Triplet 24-Dec-09 31-Dec-09 24 02:34 07:05 07:14 12:22 41.56% Logger stopped on 8 July; data resumes on 14 July.
   
Mercury Geyser 19-Sep-09 26-Sep-09 89 00:39 01:51 01:33 12:48 84.90%
Spouter 24-Dec-09 31-Dec-09 43 02:38 03:56 03:32 05:26 19.63%
   
Fountain Geyser 24-Dec-09 31-Dec-09 29 04:13 05:53 05:52 08:22 10.38%
Great Fountain 19-Sep-09 26-Sep-09 15 09:37 11:23 11:31 13:10 7.40%
Logbridge Geyser 19-Sep-09 26-Sep-09 174 00:12 00:57 00:45 09:39 96.69%
Narcissus Geyser 19-Sep-09 26-Sep-09 53 02:09 03:12 02:43 05:10 26.35%
Pink Geyser 19-Sep-09 26-Sep-09 26 02:06 06:27 06:42 12:12 29.61%
   
Echinus                 Dormant
   
Hillside                 Dormant - last eruption 02:33 on 26 November 2005; no longer monitored
Occasional Geyser 30-Aug-09 6-Sep-09 386 00:20 00:26 00:26 00:35 11.70% Logger removed for season 6 Sep 09
Lone Pine 19-Sep-09 26-Sep-09 6 23:16 28:44 25:16 43:55 27.31% No data after 1657 19 Aug due to logger problem
Activity for the most recent month
Geyser Start Date Last Update Intervals Min Mean Median Max Coef. Of Variation
Aurum 1-Dec-09 31-Dec-09 189 02:38 03:57 03:43 07:32 22.17%
Beehive 1-Dec-09 31-Dec-09 40 10:15 18:53 17:34 46:30 39.20%
Boardwalk                 Dormant - No eruptions since July 2006, no longer monitored
Depression 1-Dec-09 31-Dec-09 261 01:59 02:51 02:45 06:05 19.12%
Lion (series) 1-Dec-09 31-Dec-09 12 34:50 49:03 49:59 62:19 15.37%
Little Cub 1-Dec-09 31-Dec-09 667 00:47 01:06 01:08 04:48 17.58% Gap from 2242 31 August to 0757 14 September
Little Squirt 1-Dec-09 31-Dec-09 10 61:02 74:56 77:51 83:24 10.45% Logger removed 9 Sep 09; eruptions from then to late Sept. from OFVC log.
North Goggles                 Dormant - last eruption 18:28 on 30 September 2004; no longer monitored
Plate 1-Dec-09 31-Dec-09 27 00:06 34:15 00:53 327:23 252.20% Logger stopped at 1251 24 Nov 09; logging resumed 1231 02 Dec 09
Plume 1-Dec-09 31-Dec-09 692 00:42 01:04 01:03 06:58 25.54%
Slot                 Dormant - last eruption 10:32 on 10 November 2007; no longer monitored
   
Artemisia 4-Oct-09 3-Nov-09 37 10:10 20:16 19:57 31:22 25.32%
Baby Daisy                 Dormant - last eruption 09:50 on 8 December 2004; no longer monitored
Castle (w/o minors) 1-Dec-09 31-Dec-09 23 11:56 14:05 14:08 16:02 4.85%
Castle (minor-major) 1-Dec-09 31-Dec-09 22 03:30 06:38 05:45 11:10 35.68%
Castle (1st post minor) 1-Dec-09 31-Dec-09 18 14:28 15:28 15:28 16:30 3.70%
Daisy 1-Dec-09 31-Dec-09 277 02:10 02:41 02:42 04:08 10.31%
Grand 1-Jan-09 18-Jan-09 18 07:44 08:58 08:43 11:26 9.46% No data for week of 17-24 August due to logger failure
Grotto 1-Dec-09 31-Dec-09 85 00:30 08:37 06:20 44:42 106.08%
Grotto (dur>4h50m) 1-Dec-09 31-Dec-09 6          
Grotto (dur>12h00m) 1-Dec-09 31-Dec-09 6          
Oblong 1-Dec-09 31-Dec-09 151 03:00 04:56 04:44 13:26 24.86%
Old Faithful (all intervals) 1-Dec-09 31-Dec-09 489 00:51 01:31 01:32 02:04 10.47%
Old Faithful (Long) 1-Dec-09 31-Dec-09 458 01:17 01:33 01:32 02:04 7.13%
Old Faithful (Short) 1-Dec-09 31-Dec-09 31 00:51 01:04 01:06 01:14 8.73%
Pyramid 4-Aug-09 3-Sep-09 231 02:33 02:51 02:50 03:39 6.12%
Rift 1-Dec-09 31-Dec-09 40 03:36 18:02 17:32 27:36 22.97%
Riverside 3-Nov-09 3-Nov-09 121 05:39 06:11 06:19 06:42 5.19%
Riverside (Long) 3-Nov-09 3-Nov-09 63 06:17 06:28 06:28 06:42 1.30%
Riverside (Short) 3-Nov-09 3-Nov-09 58 05:39 05:51 05:51 06:03 1.48%
West Triplet 1-Dec-09 31-Dec-09 102 02:18 07:19 07:38 13:08 38.41% Gap from 1223 08 July to 0754 14 July due to logger failure.
     
Mercury Geyser 26-Aug-09 26-Sep-09 389 00:37 01:53 01:30 17:21 90.30%
Spouter 1-Dec-09 31-Dec-09 187 02:34 03:59 03:40 06:30 22.24%
   
Fountain Geyser 1-Dec-09 31-Dec-09 119 04:13 05:53 05:48 08:22 8.42% Gap from 1107 on 03 Nov to 1510 on 02 Dec due to lost data file
Great Fountain 27-Aug-09 26-Sep-09 65 08:38 11:36 11:31 14:57 10.81%
Logbridge Geyser 27-Aug-09 26-Sep-09 883 00:12 00:50 00:47 09:39 57.50%
Narcissus Geyser 26-Aug-09 26-Sep-09 228 01:48 03:15 03:03 05:13 26.73% Logger was damaged and moved by an animal on 21 Jan
Pink Geyser 27-Aug-09 26-Sep-09 113 02:06 06:37 06:40 12:12 16.44% Logging resumed at 0827 13 July
   
Echinus                 Dormant
   
Hillside                 Dormant - last eruption 02:33 on 26 November 2005; no longer monitored
Occasional Geyser 6-Sep-09 6-Sep-09 1732 00:19 00:26 00:26 00:36 12.45% Logger removed for season 6 Sep 09
Lone Pine 27-Aug-09 26-Sep-09 29 21:12 26:26 25:40 43:55 15.18% No data after 1657 19 Aug due to logger problem
All electronically recorded activity for 2009
Geyser Start Date Last Update Intervals Min Mean Median Max Coef. Of Variation
Aurum 1-Jan-09 31-Dec-09 1822 02:19 04:46 04:07 23:48 42.82%
Beehive 1-Jan-09 31-Dec-09 555 08:40 15:40 14:30 46:30 26.37%
Boardwalk                 Dormant - No eruptions since July 2006, no longer monitored
Depression 1-Jan-09 31-Dec-09 1005 01:52 08:40 03:21 100:48 110.95%
Lion (series) 21-Mar-09 31-Dec-09 459 02:46 13:53 11:33 71:24 72.36%
Little Cub 1-Jan-09 31-Dec-09 7416 00:25 00:52 00:42 18:43 110.22%
Little Squirt 1-Jan-09 31-Dec-09 81 20:24 108:43 87:26 546:31 71.59% Logger removed 9 Sep 09; eruptions from then to late Sept. from OFVC log.
North Goggles               Dormant - last eruption 18:28 on 30 September 2004; no longer monitored
Plate 1-Jan-09 31-Dec-09 456 00:06 19:12 04:20 732:40 309.22% Logger stopped at 1251 24 Nov 09; logging resumed 1231 02 Dec 09
Plume 1-Jan-09 31-Dec-09 7433 00:38 01:10 01:02 21:12 62.35%
Slot 11-Aug-07 31-Dec-07 1589 00:06 00:42 00:26 20:03 201.87% Dormant - last eruption 10:32 on 10 November 2007; no longer monitored
   
Artemisia 1-Jan-09 3-Nov-09 392 08:17 18:43 18:43 32:36 23.98%
Baby Daisy                 Dormant - last eruption 09:50 on 8 December 2004; no longer monitored
Castle (w/o minors) 1-Jan-09 31-Dec-09 339 11:43 13:49 13:40 21:48 6.05% Possibly missed some minor eruptions due to ice
Castle (minor-major) 1-Jan-09 31-Dec-09 212 01:12 06:37 05:46 15:09 39.12%
Castle (1st post minor) 1-Jan-09 31-Dec-09 179 11:48 14:46 14:42 17:46 25.53%
Daisy 1-Jan-09 31-Dec-09 3544 01:49 02:26 02:22 12:26 15.52%
Grand 1-Jan-09 2-Dec-09 784 06:13 08:54 08:51 13:12 14.23%
Grotto 1-Jan-09 31-Dec-09 1006 00:23 08:41 06:22 52:10 99.67%
Grotto (dur>4h50m) 1-Jan-09 31-Dec-09 88          
Grotto (dur>12h00m) 1-Jan-09 31-Dec-09 73 13:57 119:16 120:16 514:48 60.47%
Oblong 1-Jan-09 31-Dec-09 1600 02:35 05:28 05:04 17:42 31.30% Possibly missed some eruptions due to ice
Old Faithful (all intervals) 1-Jan-09 31-Dec-09 5788 00:46 01:30 01:32 02:04 10.70% Gap from 0000 02 Jan to 1700 02 Jan due to ice
Old Faithful (Long) 1-Jan-09 31-Dec-09 5383 01:15 01:32 01:32 02:04 7.03%
Old Faithful (Short) 1-Jan-09 31-Dec-09 405 00:46 01:04 01:04 01:14 8.50%
Pyramid 3-Aug-09 3-Sep-09 231 02:33 02:51 02:50 03:39 6.12%
Rift 1-Jan-09 31-Dec-09 472 01:42 18:32 17:29 238:35 68.55%
Riverside 1-Jan-09 3-Nov-09 1202 05:29 06:07 06:00 06:55 4.65%
Riverside (Long) 1-Jan-09 3-Nov-09 350 06:17 06:31 06:31 06:55 1.82%
Riverside (Short) 1-Jan-09 3-Nov-09 852 05:29 05:56 05:57 06:13 1.72%
West Triplet 1-Jan-09 31-Dec-09 1196 01:02 07:12 07:19 60:06 49.31% Gap from 1223 08 July to 0754 14 July due to logger failure.
     
Mercury Geyser 1-Jan-09 26-Sep-09 1381 00:29 01:54 01:20 155:09 249.85% No data from 27 Jan to 20 June
Spouter 1-Jan-09 31-Dec-09 2255 02:18 03:53 03:37 08:32 22.89%
   
Fountain Geyser 1-Jan-09 31-Dec-09 1142 04:04 06:00 05:59 08:52 9.11%
Great Fountain 1-Jan-09 26-Sep-09 536 08:38 11:48 11:33 21:41 13.27%
Logbridge Geyser 1-Jan-09 26-Sep-09 3230 00:12 00:58 00:47 13:33 89.35%
Narcissus Geyser 1-Jan-09 26-Sep-09 720 01:18 03:11 03:00 05:28 26.63% Logger was damaged and moved by an animal on 21 Jan
Pink Geyser 1-Jan-09 26-Sep-09 677 02:06 06:23 06:20 12:48 18.54% Logger damaged by an animal at 0732 on 16 April; replaced at 0827 13 July
   
Echinus                 Dormant
                 
Hillside                 Dormant - last eruption 02:33 on 26 November 2005; no longer monitored
Occasional Geyser 28-Jun-09 6-Sep-09 3828 00:19 00:26 00:26 00:36 13.31% Logger removed for season 6 Sep 09
Lone Pine 1-Jan-09 26-Sep-09 193 17:33 29:23 25:40 86:48 39.04% Some eruptions missed in Jan-Mar due to ice; no data after 1657 19 August