Last Known Eruption
56d 18h 17m ago

Interval Statistics

Interval Count46
Min2m
Max9y 7d 20h 47m
Mean122d 9h 54m
Median9d 10m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
10909 25 Jan 2019 @ 1000 --- Graham no eruption after 0950
8702 15 Jun 2018 @ 1544 --- JSJ Off (waited for a while), but continuous audible subterranean gurgling.
2964 04 Jun 2016 @ 1755 --- JSJ Shell Spring empty, quiet, dry.
EntrySourceLinkComment
06 Aug 2018 @ 1431 JSJ https://www.flickr.com/photos/jsjgeology/44530143112 Photo (out of 4) of Shell Spring erupting during the afternoon of 6 August 2018.
06 Aug 2018 @ 1431 JSJ https://www.youtube.com/watch?v=ZOvfJGMvh18 Time lapse video of Shell Spring's eruptive cycles during the afternoon of 6 August 2018, followed by a relatively deep drain.
Baseline does not exist.


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