Last Known Eruption
18h 9m ago

Latest Eruptions

Eruption DurationInterval
20 Sep 2020 @ 1548 ie wc1d 10h 20m
19 Sep 2020 @ 0528 ie17h 53m
18 Sep 2020 @ 1135 ie wc3h 24m
18 Sep 2020 @ 0811 ie1d 32m
17 Sep 2020 @ 0739 ie wc1d 22h 30m
15 Sep 2020 @ 0909 ie wc13h 26m
14 Sep 2020 @ 1943 wc11h 23m
14 Sep 2020 @ 0820 ie wc12h 57m
13 Sep 2020 @ 192317m
13 Sep 2020 @ 190617m
13 Sep 2020 @ 184917m
13 Sep 2020 @ 183222h 47m
12 Sep 2020 @ 194517m
12 Sep 2020 @ 1928 ie17m
12 Sep 2020 @ 191116m
12 Sep 2020 @ 185514m
12 Sep 2020 @ 1841 ie22h 28m
11 Sep 2020 @ 2013 ie wc5h 53m
11 Sep 2020 @ 142017m
11 Sep 2020 @ 1403 ie19m
11 Sep 2020 @ 1344 ie16m
11 Sep 2020 @ 1328 ie3h 48m
11 Sep 2020 @ 0940 ie54m
11 Sep 2020 @ 0846 ie wc3h 22m
11 Sep 2020 @ 0524 ie9h 14m
10 Sep 2020 @ 2010 ie12h 49m
10 Sep 2020 @ 0721 ie wc1d 17h 1m
08 Sep 2020 @ 1420 ie wc21h 14m
07 Sep 2020 @ 1706 ie wc2h 51m
07 Sep 2020 @ 1415 wc1d 19h 39m
05 Sep 2020 @ 1836 ie18m
05 Sep 2020 @ 1818 ns15m
05 Sep 2020 @ 1803 ie34m
05 Sep 2020 @ 1729 ie9h 35m
05 Sep 2020 @ 0754 ie wc12h 31m
04 Sep 2020 @ 1923 ie wc1d 11h 56m
03 Sep 2020 @ 0727 ie wc23h 23m
02 Sep 2020 @ 0804 ns wc11h 43m
01 Sep 2020 @ 2021 ie wc51m
01 Sep 2020 @ 1930 wc10h 13m
01 Sep 2020 @ 0917 ns wc1d 1h 52m
31 Aug 2020 @ 0725 ns wc31m
31 Aug 2020 @ 0654 ie wc1d 23h 30m
29 Aug 2020 @ 0724 ie wc22h 54m
28 Aug 2020 @ 0830 ns wc1h 38m
28 Aug 2020 @ 0652 ie wc12h 10m
27 Aug 2020 @ 1842 ie19m
27 Aug 2020 @ 1823 ie3h 36m
27 Aug 2020 @ 144752m
27 Aug 2020 @ 135533m
27 Aug 2020 @ 1322 ie20h 45m
26 Aug 2020 @ 1637 ie7h 42m
26 Aug 2020 @ 0855 ie wc1h 23m
26 Aug 2020 @ 0732 ie wc1d 8m
25 Aug 2020 @ 0724 wc15m
25 Aug 2020 @ 0709 wc23h 5m
24 Aug 2020 @ 0804 ie wc3d 40m
21 Aug 2020 @ 0724 wc1d 20h 10m
19 Aug 2020 @ 1114 ie wc3d 17h 25m
15 Aug 2020 @ 1749 ie1d 10h 12m
14 Aug 2020 @ 0737 ie wc1d 23h 51m
12 Aug 2020 @ 0746 ie wc1d 11h 54m
10 Aug 2020 @ 1952 ie wc2d 12h 42m
08 Aug 2020 @ 0710 ie wc2d 2m
06 Aug 2020 @ 0708 ie wc1h 25m
06 Aug 2020 @ 0543 ie wc22h 32m
05 Aug 2020 @ 0711 ie wc1d 8h 45m
03 Aug 2020 @ 2226 ie3h 1m
03 Aug 2020 @ 1925 ie wc2d 21m
01 Aug 2020 @ 1904 ie wc1h 38m
01 Aug 2020 @ 1726 ie wc10h 13m
01 Aug 2020 @ 0713 ie wc1d 0m
31 Jul 2020 @ 0713 ie wc23h 44m
30 Jul 2020 @ 0729 ie wc14h 8m
29 Jul 2020 @ 1721 ie wc34m
29 Jul 2020 @ 1647 ie wc7h 47m
29 Jul 2020 @ 0900 wc1h 22m
29 Jul 2020 @ 0738 ie wc2d 2h 10m
27 Jul 2020 @ 0528 ie wc1d 22h 27m
25 Jul 2020 @ 0701 wc10h 16m
24 Jul 2020 @ 2045 ie wc13h 48m
24 Jul 2020 @ 0657 ie wc1d 22h 27m
22 Jul 2020 @ 0830 ie wc1h 23m
22 Jul 2020 @ 0707 ie wc17m
22 Jul 2020 @ 0650 ie wc2d 57m
20 Jul 2020 @ 0553 ie wc3d 22h 5m
16 Jul 2020 @ 0748 ie wc1d 7m
15 Jul 2020 @ 0741 ie wc3d 23h 51m
11 Jul 2020 @ 0750 ie wc1h 3m
11 Jul 2020 @ 0647 ie wc13h 35m
10 Jul 2020 @ 1712 ie wc1h 24m
10 Jul 2020 @ 1548 ie wc20h 1m
09 Jul 2020 @ 1947 ie wc11h 34m
09 Jul 2020 @ 0813 ie wc2d 28m
07 Jul 2020 @ 0745 ie wc21h 58m
06 Jul 2020 @ 09471h 21m
06 Jul 2020 @ 0826 ie wc22h 23m
05 Jul 2020 @ 1003 ie wc1d 2h 1m
04 Jul 2020 @ 0802 ie wc2h 1m
04 Jul 2020 @ 0601 ie wc21h 20m

Interval Statistics

Interval Count100
Min14m
Max3d 23h 51m
Mean19h 1m
Median12h 20m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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
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.


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