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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 | ||||||||