Last Known Eruption
18d 10h 18m ago

Latest Eruptions

Eruption DurationInterval
12 Jul 2021 @ 2005:59 wc3y 76d 11h 10m
28 Apr 2018 @ 0855 ie3y 326d 15h 33m
06 Jun 2014 @ 1722272d 20h 48m
06 Sep 2013 @ 2034 ie114d 9h 58m
15 May 2013 @ 1036 ie9y 249d 16h 52m
10 Sep 2003 @ 1744 ie3d 23h 3m
06 Sep 2003 @ 1841 ie6y 72d 7h 50m
27 Jun 1997 @ 10513y 264d 19h 47m
06 Oct 1993 @ 1504 ie

Interval Statistics

Interval Count8
Min3d 23h 3m
Max9y 249d 16h 52m
Mean3y 172d 15h 37m
Median3y 170d 15h 28m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
18733 30 Jul 2021 @ 0601 --- JimS Pool empty.
18674 26 Jul 2021 @ 1502 --- SteveO Starting to drain, empty before 1520. Sawmill Deep Drain.
18672 26 Jul 2021 @ 0553 --- SteveO Drained and boiling.
18652 25 Jul 2021 @ 1530 --- SteveO Twilight Spring drained, Sawmill deep drain.
18646 25 Jul 2021 @ 0642 --- SteveO Twilight drained and quiet. Sawmill Deep Drain.
18624 24 Jul 2021 @ 1515 24 Jul 2021 @ 1740 SteveO Twilight Spring drained and boiling out of sight. Sawmill Deep Drain. Twilight Spring is almost refilled.
18617 24 Jul 2021 @ 0632 --- SteveO Twilight Spring drained, Sawmil Deep Drain.
18608 23 Jul 2021 @ 1731 --- Ben VL Empty. DD after earlier Sawmill.
18601 23 Jul 2021 @ 1015 --- SteveO Twilight Spring drained and boiling, water level out of sight. Sawmill deep drain.
18586 22 Jul 2021 @ 1700 --- SteveO Returned to normal level from deep drain.
18574 22 Jul 2021 @ 1150 --- SteveO Starting to drop, deep drain. Sawmill still erupting.
18561 21 Jul 2021 @ 1227 --- SteveO Drained, Sawmill deep drain.
18556 21 Jul 2021 @ 0612 --- SteveO Is full, Sawmill not in a deep drain.
18549 20 Jul 2021 @ 0824 20 Jul 2021 @ 1600 SteveO 0824 Twilight Spring was splashing from low water level. Slowly rising during Sawmill's eruption to about 9" below rim. After Sawmill ended Twilight dropped a to a low level and started splashing again. At 1600 Twilight was down 2".
18542 20 Jul 2021 @ 0629 --- JimS Pool empty.
18528 19 Jul 2021 @ 1814 --- SteveO Draining.
18519 19 Jul 2021 @ 0832 --- SteveO Drained, Sawmill deep drain.
18512 18 Jul 2021 @ 1713 --- SteveO Drained, Sawmill deep drain
18479 17 Jul 2021 @ 1715 --- SteveO Almost to overflow after the deep drain.
18478 17 Jul 2021 @ 1549 --- Ben VL Water coming back up
18475 17 Jul 2021 @ 1434 --- SteveO Starting to drain.
18463 17 Jul 2021 @ 0532 --- SteveO Overflowing, Sawmill not in a deep drain.
18459 16 Jul 2021 @ 1827 16 Jul 2021 @ 1950 SteveO Fast recovery from the deep drain, down only about 3 inches. Reached overflow at 1950.
18456 16 Jul 2021 @ 1600 --- SteveO Started draining.
18449 16 Jul 2021 @ 0915 --- SteveO Almost to overflow from deep drain.
18441 16 Jul 2021 @ 0618 --- JimS No water visible.
18430 15 Jul 2021 @ 0554 15 Jul 2021 @ 0635 SteveO Down about 4 inches. Reached overflow at 0635. Spasmodic vents becoming active.
18424 14 Jul 2021 @ 1749 --- SteveO Looks to have drained earlier or just a partial drain. Down about a foot and is on its way up. Uncertain is quiet and steaming slightly.
18408 13 Jul 2021 @ 0910 --- SteveO Down 6 inches and dropping fast.
18406 13 Jul 2021 @ 0637 --- SteveO Down an inch.
18395 12 Jul 2021 @ 1830 --- SteveO Twilight has started dropping.
17818 15 Jun 2021 @ 1313 --- Craigmon99 Bubbling gently. 1/2 inch bubbles reach in height.
12866 29 Jul 2019 @ 1050 --- rbwhitaker Full but barely in overflow
3537 24 Aug 2016 @ 1425 24 Aug 2016 @ 1445 SteveO Twilight drained between 1425 & 1445, completely empty at 1445.
3512 19 Aug 2016 @ 1114 --- SteveO Started draining.
2235 01 Sep 2015 @ 1423 --- Micah Kipple Water hoes out of sight.
2236 01 Sep 2015 @ 1412 --- Micah Kipple Twilight began draining at this time.
2011 03 Aug 2015 @ 0252 --- Micah Kipple Beginning to drain at this time. Possibly indicating the sawmill group is going into a deep drain.
869 05 Sep 2013 @ 2212 --- Micah Kipple full at 2212 empty at 2302
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Baseline does not exist.