Last Known Eruption
9h 41m ago

Latest Eruptions

Eruption DurationInterval
18 Sep 2021 @ 0730 wc22h 28m
17 Sep 2021 @ 0902 wc16m
17 Sep 2021 @ 0846 ie wc1h 36m
17 Sep 2021 @ 0710 ns wc17m
17 Sep 2021 @ 0653 wc19m
17 Sep 2021 @ 0634 wc18m
17 Sep 2021 @ 0616 wc10h 21m
16 Sep 2021 @ 1955 ie wc3h 43m
16 Sep 2021 @ 1612 wc19m
16 Sep 2021 @ 1553 wc7h 48m
16 Sep 2021 @ 0805 wc12h 23m
15 Sep 2021 @ 1942 wc19m
15 Sep 2021 @ 1923 wc18m
15 Sep 2021 @ 1905 wc11h 11m
15 Sep 2021 @ 0754 ie wc37m
15 Sep 2021 @ 0717 wc15m
15 Sep 2021 @ 0702 ie wc39m
15 Sep 2021 @ 0623 wc17m
15 Sep 2021 @ 0606 wc11h 3m
14 Sep 2021 @ 1903 ie wc21m
14 Sep 2021 @ 1842 wc7h 1m
14 Sep 2021 @ 1141 ie59m
14 Sep 2021 @ 1042 wc17m
14 Sep 2021 @ 1025 wc20m
14 Sep 2021 @ 1005 wc18m
14 Sep 2021 @ 0947 wc1h 33m
14 Sep 2021 @ 0814 wc35m
14 Sep 2021 @ 0739 ie wc2m
14 Sep 2021 @ 0737 wc47m
14 Sep 2021 @ 0650 wc27m
14 Sep 2021 @ 0623 wc18m
14 Sep 2021 @ 0605 wc10h 11m
13 Sep 2021 @ 1954 wc20m
13 Sep 2021 @ 1934 wc36m
13 Sep 2021 @ 1858 wc39m
13 Sep 2021 @ 1819 wc19m
13 Sep 2021 @ 1800 wc40m
13 Sep 2021 @ 1720 ie wc1h 31m
13 Sep 2021 @ 1549 ns wc1h 3m
13 Sep 2021 @ 1446 ns wc4h 46m
13 Sep 2021 @ 1000 ns wc54m
13 Sep 2021 @ 0906 wc18m
13 Sep 2021 @ 0848 wc37m
13 Sep 2021 @ 0811 wc52m
13 Sep 2021 @ 0719 ie wc1h 15m
13 Sep 2021 @ 0604 wc15h 15m
12 Sep 2021 @ 1449 ie wc1h 30m
12 Sep 2021 @ 1319 ie wc5h 39m
12 Sep 2021 @ 0740 wc19m
12 Sep 2021 @ 0721 wc18m
12 Sep 2021 @ 0703 wc35m
12 Sep 2021 @ 0628 ie wc23m
12 Sep 2021 @ 0605 wc9h 49m
11 Sep 2021 @ 2016 wc39m
11 Sep 2021 @ 1937 wc38m
11 Sep 2021 @ 1859 ie wc11h 3m
11 Sep 2021 @ 0756 wc12h 21m
10 Sep 2021 @ 193519m
10 Sep 2021 @ 1916 wc3h 39m
10 Sep 2021 @ 1537 ie wc3h 7m
10 Sep 2021 @ 12304h 56m
10 Sep 2021 @ 0734 ie wc2m
10 Sep 2021 @ 0732 wc57m
10 Sep 2021 @ 0635 wc17m
10 Sep 2021 @ 0618 wc14h 54m
09 Sep 2021 @ 1524 ie5h 33m
09 Sep 2021 @ 0951 wc19m
09 Sep 2021 @ 0932 wc1h 48m
09 Sep 2021 @ 0744 ie wc54m
09 Sep 2021 @ 0650 ie wc19h 51m
08 Sep 2021 @ 1059 wc1h 14m
08 Sep 2021 @ 0945 wc37m
08 Sep 2021 @ 0908 wc19m
08 Sep 2021 @ 0849 wc55m
08 Sep 2021 @ 0754 wc18m
08 Sep 2021 @ 0736 ie wc17m
08 Sep 2021 @ 0719 ie wc12h 10m
07 Sep 2021 @ 1909 wc20m
07 Sep 2021 @ 1849 wc1h 4m
07 Sep 2021 @ 1745 wc1h 5m
07 Sep 2021 @ 1640 wc3h 20m
07 Sep 2021 @ 1320 ie4h 0m
07 Sep 2021 @ 0920 wc18m
07 Sep 2021 @ 0902 wc19m
07 Sep 2021 @ 0843 wc58m
07 Sep 2021 @ 0745 wc37m
07 Sep 2021 @ 0708 wc18m
07 Sep 2021 @ 0650 wc19m
07 Sep 2021 @ 0631 wc18m
07 Sep 2021 @ 0613 wc18m
07 Sep 2021 @ 0555 wc10h 35m
06 Sep 2021 @ 1920 ie wc1h 48m
06 Sep 2021 @ 1732 ie wc55m
06 Sep 2021 @ 1637 wc8h 55m
06 Sep 2021 @ 0742 ie wc20m
06 Sep 2021 @ 0722 wc19m
06 Sep 2021 @ 0703 wc18m
06 Sep 2021 @ 0645 wc19m
06 Sep 2021 @ 0626 wc18m
06 Sep 2021 @ 0608 wc23h 59m

Interval Statistics

Interval Count100
Min2m
Max23h 59m
Mean3h 8m
Median39m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
17837 15 Jun 2021 @ 1809 --- CrisG empty.
12906 31 Jul 2019 @ 1935 31 Jul 2019 @ 2024 JSJ Closed intervals for posted eruptions. Unlike previous years, no fill and drain cycles. Water level never visible.
11727 11 Jun 2019 @ 1638 --- CrisG Crater empty
11696 10 Jun 2019 @ 1002 --- CrisG empty crater
11656 08 Jun 2019 @ 1513 --- CrisG empty.
11528 02 Jun 2019 @ 0932 --- Janet Jones The wash from Marmot Cave cleared gravel fro the solid sinter base all the way under the boardwalk and down to the Dwarfs. I didn’t get a chance to sit and wait for an eruption, but that wash wasn’t there a couple weeks ago as far as I recall.
10902 24 Jan 2019 @ 0718 --- Graham Runoff channel snowed in
10897 23 Jan 2019 @ 0725 --- Graham No eruption recently. snow in runoff channel
10645 21 Oct 2018 @ 1132 --- rbwhitaker Water came up, small boiling, rocking pool, then dropped. No eruption. No bursts, anyway.
10440 25 Sep 2018 @ 1114 --- Micah Kipple Fill. Strong boil. Drain. No eruption.
10439 25 Sep 2018 @ 1103 --- Micah Kipple Fill. Boil. Drain. No eruption.
10381 19 Sep 2018 @ 1022 --- Siegmund Empty. Still empty 1104.
10246 16 Sep 2018 @ 0704 --- steve Rocking and overflowing followed by a drop but no splashing
10144 11 Sep 2018 @ 1043 --- Tara Water came up with pulsing overflow and bubbles for about 1 minute and then dropped.
10154 11 Sep 2018 @ 0905 --- Barbara Lasseter no visible water
10025 04 Sep 2018 @ 1629 --- Janet Jones 1629 - water rise. Sloshing and bouncing duriing a slower rise. 1630 - overflow with boilong but mo eruption. 1631 - drain.
10012 03 Sep 2018 @ 1429 --- Micah Kipple Heavy surge to 10" but no bursting. Maybe an eruption?
9530 07 Aug 2018 @ 1440 07 Aug 2018 @ 1443 JSJ Water rising at 1440. Pool pulsing with overflow, etc. No eruption. Water drained out-of-sight at 1443.
9529 07 Aug 2018 @ 1419 07 Aug 2018 @ 1422 JSJ Water rising at late 1419. Pool pulsing, overflow, light roiling. No eruption. Water drained out-of-sight at late 1421 to early 1422.
9528 07 Aug 2018 @ 1348 07 Aug 2018 @ 1400 JSJ Cycles involving rising water, pool pulsing with overflow, bubbling and low roiling, then water lowering out of sight: 1348 to 1350 (no eruption), 1359 to 1400 (no eruption). Closed interval for cycles: 11m.
9527 07 Aug 2018 @ 1151 07 Aug 2018 @ 1253 JSJ Cycles involving rising water, pool pulsing with overflow, bubbling and low roiling, then water lowering out of sight: 1151 to 1153, 1203 to 1205, 1213 to 1216, 1226 to 1228, 1239 to 1242, 1251 to 1253. Closed intervals for cycles: 12m, 10m, 13m, 13m, 12m.
9476 05 Aug 2018 @ 1458 --- Tara Pulsing, bubbling, and overflowing in progress. Water level dropped out of sight at 1459.
9362 01 Aug 2018 @ 0805 --- Barbara Lasseter crater empty
9345 31 Jul 2018 @ 1609 --- jazzknick Fluctuating overflow and rocking followed by drain. Small bubbling st front edge
9282 24 Jul 2018 @ 1607 --- WillBoekel empty.
8956 30 Jun 2018 @ 1623 --- Tara Bubbling with pulsing overflow.
8904 27 Jun 2018 @ 1249 27 Jun 2018 @ 1311 Tara Down about 3 inches at 1249, full at 1311.
8717 16 Jun 2018 @ 1125 --- CrisG full and overflowing
8656 13 Jun 2018 @ 1431 13 Jun 2018 @ 1433 Tara Pulsating and overflowing in progress at 1431, water level dropped out of sight at 1433.
8655 13 Jun 2018 @ 1359 --- Tara Crater empty.
8470 05 Jun 2018 @ 1915 --- underarockphoto Overflow reached.
8099 04 May 2018 @ 1144 --- Janet Jones No microbes growing in the overflow channel or in the vent. Water level at 3-4" below overflow.
3384 28 Jul 2016 @ 1027 --- WillBoekel empty. no water visible
3241 07 Jul 2016 @ 1306 --- udo drained
2909 28 May 2016 @ 1550 --- WillBoekel down 1 inch
2773 22 Apr 2016 @ 1006 --- WillBoekel down about 4 inches
2135 16 Aug 2015 @ 1010 16 Aug 2015 @ 1053 JSJ Full & slightly pulsing at 1010. Stronger pulsing with overflow from 1012 to 1016. Drain at 1016. Noticed it was full at 1053.
2072 09 Aug 2015 @ 1001 --- JSJ Pool full.
1996 31 Jul 2015 @ 1027 --- Tara pulsing and bubbling in progress
1987 29 Jul 2015 @ 1319 --- Tara Pulsing and bubbling with overflow. I saw it in progress and it lasted only a few more seconds before the water level dropped nearly out of sight.
1917 16 Jul 2015 @ 1956 --- Jake empty.
1862 07 Jul 2015 @ 1512 --- Micah Kipple Empty.
1785 23 Jun 2015 @ 1913 --- bhoppe empty at 1913
1777 22 Jun 2015 @ 1921 --- WillBoekel about 3 inches below overflow
1773 21 Jun 2015 @ 1130 --- udo Pulsed for several minutes and drained at 1130
1759 18 Jun 2015 @ 1632 --- WillBoekel empty.
1746 16 Jun 2015 @ 1314 --- bhoppe empty at 1314
1737 14 Jun 2015 @ 1140 --- WillBoekel half full
1736 14 Jun 2015 @ 0921 --- WillBoekel empty.
1697 07 Jun 2015 @ 1639 --- WillBoekel empty.
1206 03 Jun 2014 @ 1219 03 Jun 2014 @ 1220 JSJ Marmot Cave Geyser's vent was filled with water & was bouncing slightly at 1219 on 3 June 2014.  The pool completely drained at 1220.
1059 03 May 2014 @ 2049 --- WillBoekel 2049 resume overflow
1057 03 May 2014 @ 2020 --- WillBoekel At 2020 water was ~3-4 inches below overflow
1056 02 May 2014 @ 1529 --- WillBoekel Drained at 1529 water seen refilling at 1530 and possible suds on the pool upon refill
761 04 Jun 2011 @ 1422 --- Janet Jones Marmot Cave Geyser\r\n1420 - water level dropped below overflow.\r\n1422 - pulsing, still below overflow.\r\n1426 - water level back to overflow \r\n1428 - left the area
16763 30 Oct 1998 @ 1037 --- JarnoO surging, not actual erupt
16700 15 Aug 1998 @ 0836 --- JarnoO low pool
16688 15 Jul 1998 @ 0000 15 Jul 1998 @ 2359 JarnoO active
16687 14 Jul 1998 @ 0000 14 Jul 1998 @ 2359 JarnoO across from Arrowhead Spring: active all day
16646 26 May 1998 @ 0000 26 May 1998 @ 2359 JarnoO UNNG across from Arrowhead; active
16605 18 Mar 1998 @ 0000 18 Mar 1998 @ 2359 JarnoO UNNG below Inverted; active
EntrySourceLinkComment
07 Aug 2018 @ 1339 JSJ https://www.youtube.com/watch?v=QQIW13aaXSw#t=12m38s Clip 23 of this video compilation (time stamp 12:38 to 14:23) shows Marmot Cave Geyser's 1:39 to 1:40 PM eruption on 7 August 2018 during a fill-and-drain cycle.
07 Aug 2018 @ 1330 JSJ https://www.youtube.com/watch?v=QQIW13aaXSw#t=10m42s Clip 22 of this video compilation (time stamp 10:42 to 12:38) shows Marmot Cave Geyser's 1:30 to 1:32 PM eruption on 7 August 2018 during a fill-and-drain cycle.
07 Aug 2018 @ 1322 JSJ https://www.youtube.com/watch?v=QQIW13aaXSw#t=8m29s Clip 21 of this video compilation (time stamp 8:29 to 10:42) shows Marmot Cave Geyser's 1:22 to 1:23 PM eruption on 7 August 2018 during a fill-and-drain cycle.
07 Aug 2018 @ 1303 JSJ https://www.youtube.com/watch?v=QQIW13aaXSw#t=7m30s Clip 20 of this video compilation (time stamp 7:30 to 8:29) shows Marmot Cave Geyser's 1:03 PM eruption on 7 August 2018 during a fill-and-drain cycle.
Baseline does not exist.