Last Known Eruption
184d 8h 19m ago

Interval Statistics

Interval Count4
Min15m
Max2d 6h 47m
Mean17h 9m
Median6h 48m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
10729 05 Nov 2018 @ 1322 --- Archer Two foot surge for ~20s.
10589 08 Oct 2018 @ 1113 --- Micah Kipple Surge to 2 feet
10518 01 Oct 2018 @ 1643 --- Micah Kipple 2' surge from the center of the pool.
10313 20 Sep 2018 @ 1821 --- Betty Large boil for about 15 seconds as seen from the barrier at Arrowhead Spring
10283 18 Sep 2018 @ 0945 --- Micah Kipple Frequent surging minor eruptions 2-3' high from left front vent. Righthand vent in constant state of superheated boiling from flat to 2'
10252 16 Sep 2018 @ 0734 --- steve One piece of the sinter rim about 4X8 inches washed off during a strong boil.
10250 16 Sep 2018 @ 0719 --- steve Two peices of the sinter rim on the north edge are loose and may wash away.
10242 16 Sep 2018 @ 0637 --- steve No major eruption overnight. Still heavy bioling, occasionly to 2-3 feet. Overall the whole area on the west side of the hill looks like it did last night
10231 15 Sep 2018 @ 2156 --- Micah Kipple Cycling rapidly from 1-2 inches below ovf to sheeting heavy overflow accompanied by violent superheated boiling from two vents. The lefthand vent can reach up to 4 feet.
9499 06 Aug 2018 @ 1842 --- Micah Kipple Gravel washed to the boardwalk. Fresh runoff channels.
8366 30 May 2018 @ 1157 --- Janet White Nearly all microbes have been killed in the runoff channels. They’ve also been greatly reduced in Pendant Spring.
4505 19 Jul 2017 @ 1238 --- Janet White Ear Spring is significantly hotter than it was on my last visit (think that was on 11 July 2017). There's also a seep that's active along the "front left" edge (as you face it on the boardwalk). I watched sustained boiling in the center of the pool that lasted 30 seconds or so.
3860 05 Nov 2016 @ 1117 --- Janet White Area between the section of Ear Spring that normally bubbles along the edge and the boardwalk was wet out to about a foot. This is not in the normal overflow channel for Ear.
3179 22 Jun 2016 @ 0935 --- David Spring boiling from lower right corner (vent area being upper right corner) as viewed from bw. see: https://www.flickr.com/photos/ujelang/27942211472/in/dateposted-public/
3371 11 Jun 2016 @ 1212 --- JSJ Thermal photography of pool recorded 190° F.
1124 04 Aug 2014 @ 0000 04 Aug 2014 @ 2359 Archer Activity seemed slightly more vigorous than usual.
EntrySourceLinkComment
15 Sep 2018 @ 1649 DaveM https://www.youtube.com/watch?v=aLJlMCNmecs video of eruption as seen on webcam
Baseline does not exist.


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