Last Known Eruption
106d 12h 36m ago

Interval Statistics

Interval Count40
Min2h 20m
Max35y 17d 23h 5m
Mean1y 47d 6h 21m
Median3d 13h 35m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
10507 30 Sep 2018 @ 1757 --- DanS Appears to be off. Unable to hear or see it through the trees as usual.
2757 15 Apr 2016 @ 1517 --- MAB Active. Heard from trail
1530 17 Apr 2015 @ 1933 --- MAB Opening day- Active- heard from trail
1471 25 Oct 2014 @ 1534 25 Oct 2014 @ 1747 MAB Quiet from the trail at 1534, very windy/noisy at 1747 but no motion visible
5249 01 Sep 1976 @ 1500 --- research-mab 09/01/1976 Redicsovered was drained & dry at about 1500
5637 18 Aug 1975 @ 1800 --- research-mab 08/18/1975 Rediscovered geezer observed for about 20 min {time unknown}. During this time, the water level rose & fell about 7 times. When the level fell below 8” in depth, bubbling ceased. Above this level, the geezer bubbled & splashed. At its highest point, the water never caused an overflow.
5633 06 Aug 1975 @ 1800 --- research-mab 08/06/1975 was observed for a 30 min period. The water level rose & fell 5 times. At the peak of each level, large steam bubbles rose & broke at the surface. At the low point of each level, a dull thudding could be heard. Temperatures were taken during the “boiling” phase (202ºF) & the “drained” phase (198ºF). No evidence of a recent eruption, as sinter area was quite dry. {no time entered}
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Baseline does not exist.


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