Last Known Eruption
92d 9h 29m ago

Latest Eruptions

Eruption DurationInterval
04 Jul 2022 @ 19308d 33m
26 Jun 2022 @ 1857 ns1d 11h 9m
25 Jun 2022 @ 0748 ie2d 9h 55m
22 Jun 2022 @ 2153 ie2h 20m
22 Jun 2022 @ 1933 ie7h 15m
22 Jun 2022 @ 12184d 22h 15m
17 Jun 2022 @ 1403 ie3d 22h 48m
13 Jun 2022 @ 1515 ns2h 42m
13 Jun 2022 @ 12332h 34m
13 Jun 2022 @ 0959 ie19h 7m
12 Jun 2022 @ 1452 ie4h 9m
12 Jun 2022 @ 1043 ie3h 41m
12 Jun 2022 @ 0702 ie10h 31m
11 Jun 2022 @ 20316h 40m
11 Jun 2022 @ 1351 ie7h 4m
11 Jun 2022 @ 0647 ie20h 37m
10 Jun 2022 @ 1010 ie13h 48m
09 Jun 2022 @ 2022 ie8h 39m
09 Jun 2022 @ 1143 ie1h 56m
09 Jun 2022 @ 0947 ie10h 50m
08 Jun 2022 @ 22571h 45m
08 Jun 2022 @ 21125h 42m
08 Jun 2022 @ 153019h 51m
07 Jun 2022 @ 19391d 6h 21m
06 Jun 2022 @ 1318 ie3h 43m
06 Jun 2022 @ 0935 ie14h 47m
05 Jun 2022 @ 18482h 26m
05 Jun 2022 @ 1622 ie2h 46m
05 Jun 2022 @ 1336 ns6h 35m
05 Jun 2022 @ 0701 ie15h 32m
04 Jun 2022 @ 1529 ie7h 54m
04 Jun 2022 @ 07351d 12h 27m
02 Jun 2022 @ 1908 ie3h 45m
02 Jun 2022 @ 1523 ie3h 54m
02 Jun 2022 @ 1129 ie16h 59m
01 Jun 2022 @ 1830 ie3h 16m
01 Jun 2022 @ 1514 ie4h 3m
01 Jun 2022 @ 1111 ie17h 14m
31 May 2022 @ 1757 ie7h 47m
31 May 2022 @ 1010 ie55m
31 May 2022 @ 0915 ie19h 5m
30 May 2022 @ 1410 ie18h 51m
29 May 2022 @ 1919 ie11h 7m
29 May 2022 @ 0812 ie21h 45m
28 May 2022 @ 1027 ie20h 34m
27 May 2022 @ 1353>1h 7m 3h 5m
27 May 2022 @ 10481h 36m 1d 16h 53m
25 May 2022 @ 1755 ie1d 1h 57m
24 May 2022 @ 1558 ie20h 37m
23 May 2022 @ 19216h 28m
23 May 2022 @ 1253 ie1d 22m
22 May 2022 @ 1231 ie5h 25m
22 May 2022 @ 0706 ie1d 14h 11m
20 May 2022 @ 1655 ns1h 28m
20 May 2022 @ 1527 ie6h 7m
20 May 2022 @ 09202h 13m
20 May 2022 @ 0707 ie13h 1m
19 May 2022 @ 1806>1h 6m 1h 19m
19 May 2022 @ 1647 ie4h 25m
19 May 2022 @ 12226h 8m
19 May 2022 @ 0614 ie14h 25m
18 May 2022 @ 1549 ie20h 41m
17 May 2022 @ 19081h 41m
17 May 2022 @ 1727 ns~40m 29d 2h 42m
18 Apr 2022 @ 1445 ie41d 5h 8m
08 Mar 2022 @ 0837 ie2d 23h 46m
05 Mar 2022 @ 0851 ie19d 23h 52m
13 Feb 2022 @ 0859 ie17h 18m
12 Feb 2022 @ 1541 ie7h 11m
12 Feb 2022 @ 0830 ie24d 20h 26m
18 Jan 2022 @ 1204 ns4h 42m
18 Jan 2022 @ 0722 ie14h 29m
17 Jan 2022 @ 1653 ie7h 53m
17 Jan 2022 @ 0900 ie~2h 30m 1h 31m
17 Jan 2022 @ 0729 ie16h 29m
16 Jan 2022 @ 1500 ie>2h 30m 5h 41m
16 Jan 2022 @ 0919 ns1h 55m
16 Jan 2022 @ 0724 ie20h 58m
15 Jan 2022 @ 1026 ie20h 27m
14 Jan 2022 @ 1359 ie6h 39m
14 Jan 2022 @ 0720 ie15h 4m
13 Jan 2022 @ 1616 ie6h 3m
13 Jan 2022 @ 1013 ie22h 1m
12 Jan 2022 @ 1212 ns4h 32m
12 Jan 2022 @ 0740 ie17h 26m
11 Jan 2022 @ 1414 ie>3h 6m 50d 1h 29m
22 Nov 2021 @ 1245 ie wc1d 22h 45m
20 Nov 2021 @ 1400 ie24d 1h 18m
27 Oct 2021 @ 1342 ie10d 21h 53m
16 Oct 2021 @ 1549 ie15d 9h 19m
01 Oct 2021 @ 0630 ie16h 40m
30 Sep 2021 @ 1350 ie3h 58m
30 Sep 2021 @ 0952 ie2h 43m
30 Sep 2021 @ 0709 ie23h 12m
29 Sep 2021 @ 0757 ie1d 1h 12m
28 Sep 2021 @ 0645 ie1d 18h 34m
26 Sep 2021 @ 121152m
26 Sep 2021 @ 1119 ie2d 18h 24m
23 Sep 2021 @ 1655 ie7h 54m
23 Sep 2021 @ 0901 ie1d 19h 31m

Interval Statistics

Interval Count100
Min52m
Max50d 1h 29m
Mean2d 20h 42m
Median13h 24m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
22001 17 Jun 2022 @ 1509 --- RMichaels Spasmodic just in overflow with only a few vents splashing. Started dropping 1512.
21886 10 Jun 2022 @ 1015 --- RMichaels Reached overflow at 1015 while ie. Dropped at 1024..
21794 06 Jun 2022 @ 1659 --- Graham Off by now. Group draining. Sawmill still ie.
21535 27 May 2022 @ 1357 --- Graham In overflow now.
21530 27 May 2022 @ 1212 --- Graham Just went into overflow.
21469 24 May 2022 @ 2005 --- Ajw All pools fully drained. Can hear some water sloshing in right side pool.
21367 19 May 2022 @ 1804 --- Graham Pools joined. Penta pooling water too.
21159 03 May 2022 @ 1930 --- Ajw North (left) pool fully drained South (right) pool very low water, with steam and churning. Central vent also drained.
21136 30 Apr 2022 @ 1535 --- User34 Water completely out of sight
20724 18 Jan 2022 @ 1029 --- Graham End 1029
20691 14 Jan 2022 @ 1646 --- Graham In deep drain with Twilight Spring. Sawmill still ie.
20679 12 Jan 2022 @ 1031 --- Graham Off now except right pool front vent doing angled splashing.
20012 17 Oct 2021 @ 0900 --- aferrara No visible water
19785 29 Sep 2021 @ 1109 --- Graham Drained deep.
19166 30 Aug 2021 @ 1335 --- Graham 1335 approx end time.
19102 27 Aug 2021 @ 1148 --- Graham Quit 1148
18841 05 Aug 2021 @ 1829 --- TinaN Water too low to see in either pool at start of Sawmill
18435 15 Jul 2021 @ 1217 --- Micah Kipple Front vents shut down. Eruption end.
18416 14 Jul 2021 @ 0707 --- SteveO Right pool overflowing into left pool. Left pool down 12 inches.
18405 13 Jul 2021 @ 0637 --- SteveO Right vent down about 2 feet and bursting. Left vent down about 4 feet and boiling vigorously.
18396 12 Jul 2021 @ 1830 --- SteveO Draining.
18383 12 Jul 2021 @ 0915 --- Tara Bubble shower vent active
18247 02 Jul 2021 @ 1752 --- Graham Not erupting
18101 26 Jun 2021 @ 0755 --- Graham Approx end time.
18034 22 Jun 2021 @ 2009 --- Tara water levels recovering from drain in group (Spasmodic, Oval, Thumping Hole, Dog Bone, Penta, Sawmill, Tardy). Parasite vent cycling through moderate to strong splashing.
18005 22 Jun 2021 @ 0952 22 Jun 2021 @ 1007 ldgordon Right pool almost out of sight, parasite exposed in left pool. Churn and oval continue to drop. Twilight remains at normal level
18004 22 Jun 2021 @ 0928 --- ldgordon New back bubbles turned on.
17985 21 Jun 2021 @ 2030 21 Jun 2021 @ 2103 ldgordon Water rising, front part of right pool vigorously boiling to ~a foot.
17978 21 Jun 2021 @ 1550 --- K.Cooper Low, very low.
17960 21 Jun 2021 @ 1210 --- Tara reached overflow
17955 21 Jun 2021 @ 1058 --- Tara Dropped below overflow, parasite vent blurping weakly
17931 19 Jun 2021 @ 2119 --- User34 In startup sequence, right pool quiet
17909 19 Jun 2021 @ 1201 --- Craigmon99 ie at this time from previous eruption. Parasite vent is still on however it is weaker. Regular south pressure pool vent is bubbling which is noteworthy as is north pressure pool.
17908 19 Jun 2021 @ 1146 --- Tara in overflow, parasite vent back on strong
17907 19 Jun 2021 @ 0935 --- Tara 0935 water level rising, parasite vent off, south pool slightly murky. after rising to overflow, the south pool had increasingly vigorous boiling and no bubbles from the parasite vent. during this time Thumping Hole was splashing to 1-1.5', and its water level rose enough to create runoff. Penta water level also up with slightly silty water
17867 17 Jun 2021 @ 1242 --- Craigmon99 On strong. Parasite vent strong almost to 3 feet
17854 16 Jun 2021 @ 1555 --- Craigmon99 Parasite on
17852 16 Jun 2021 @ 1548 --- Craigmon99 Parasite vent off
17836 15 Jun 2021 @ 1629 --- Craigmon99 Parasite off. 1636 Parasite will attempt to turn on but spasmodic will attempt to begin eruption, turning parasite off.
17833 15 Jun 2021 @ 1613 --- Craigmon99 Has turned off since my break. Parasite still on. All behavior of surrounding vents is consistent with previous notes with spasmodic off.
17822 15 Jun 2021 @ 1327 --- Craigmon99 Parasite vent off as spasmodic attempts to start
17817 15 Jun 2021 @ 1313 --- Craigmon99 Off. Parasite vent ie.
17778 14 Jun 2021 @ 1607 --- Craigmon99 Off from ie
17682 11 Jun 2021 @ 0824 --- TheHikingDude In the duration of the 8:11 eruption, I walked up to see the two main pools bursting to a foot at most, however 5 vents in the front were going bezerk, shooting water around 2 to 3 feet in the air very rapidly.
17639 10 Jun 2021 @ 1339 --- Graham In overflow.
13884 05 Oct 2019 @ 0832 --- jkgood There is a glove bobbing about in one of the small vents near the boardwalk :-/
13365 23 Aug 2019 @ 1516 --- EmilyW Spasmodic seems drained and low at this time when old tardy is ie
12916 01 Aug 2019 @ 1310 --- rbwhitaker Only the big vent on the right (as seen from the trail) is erupting. Maybe a foot below overflow.
12865 29 Jul 2019 @ 1048 --- rbwhitaker Two feet below overflow. Fairly quiet. Only two to three feet splashing from the back of the right vent and one foot from the back vent. Otherwise quiet.
11987 27 Jun 2019 @ 1319 27 Jun 2019 @ 1447 ldgordon The near constant back vent in the right pool was paused with occainsial spalshes until 1344. It had strong eruptive episodes with frequent pauses for the rest of the eruption.
11961 25 Jun 2019 @ 1845 --- Craigmon99 Off and draining
11940 24 Jun 2019 @ 2009 --- ldgordon In overflow
11927 23 Jun 2019 @ 1425 --- Tara Dropped below overflow around this time.
11899 21 Jun 2019 @ 1344 --- Craigmon99 Off during Old Tardy, beginning to drain along with most of the sawmill complex except notably Churn
11809 15 Jun 2019 @ 1059 --- William all vents on vigorously
11602 06 Jun 2019 @ 1749 --- ldgordon Water level dropping.
11513 02 Jun 2019 @ 1757 --- ldgordon Water level dropping
11534 02 Jun 2019 @ 0951 --- Janet Jones Splash from the left vent! First one I’ve seen since the dormancy in the Sawmill Group. Video on my Instagram account - https://www.instagram.com/p/ByOyx4RAa93/
11129 29 Apr 2019 @ 1354 --- Polly Back vent quiet & front vents on. (Was the opposite on the 27th.)
10926 27 Jan 2019 @ 0900 --- Graham Active all week up and down.
10648 21 Oct 2018 @ 1312 --- rbwhitaker Both pools full and overflowing. Right vent is bursting maybe 3 feet, left pool is quiet. Back vent is off and on. All of the holes in front of the left pool are on.
10635 20 Oct 2018 @ 1339 --- Biddle One pool and one small vent in vigorous eruption, everything else somewhat quiet.
10214 15 Sep 2018 @ 1437 --- Micah Kipple Dropped below overflow with all vents nearly dying.
9794 20 Aug 2018 @ 1821 --- TheHikingDude Heavy steaming from Spasmodic Geyser area. Possible minor eruption? Area usually doesn’t steam like this.
9480 05 Aug 2018 @ 1635 05 Aug 2018 @ 1750 Micah Kipple Spasmodic is perpetually erupting from the back vent within the righthand pool. The back vent between the two pools is occasionally erupting up to 2 meters. I have seen no other vents while sitting here.
4035 03 May 2017 @ 1605 --- mhreed I count 21 vents actively erupting.
3770 09 Oct 2016 @ 1223 09 Oct 2016 @ 1356 WillBoekel started overflow then ended.
3102 20 Jun 2016 @ 1715 --- WillBoekel started overflowing
2777 22 Apr 2016 @ 1635 --- WillBoekel end overflow
2770 21 Apr 2016 @ 0930 --- WillBoekel logger deployed for research permit #06094
2545 14 Oct 2015 @ 1151 --- SteveO Start of overflow
2502 10 Oct 2015 @ 1138 --- SteveO start of overflow
2499 10 Oct 2015 @ 0753 --- WillBoekel in overflow
2407 23 Sep 2015 @ 0729 23 Sep 2015 @ 0753 JimS Started overflowing at 0729. Was back below overflow at 0753.
2387 20 Sep 2015 @ 0653 --- JimS Was in overflow at 0653.
2384 19 Sep 2015 @ 1329 --- mhreed Reached overflow at 1329.
16626 19 Apr 1998 @ 0000 19 Apr 1998 @ 2359 JarnoO active
No attachments for this geyser.
Baseline does not exist.