Last Known Eruption
13d 18h 38m ago

Latest Eruptions

Eruption DurationInterval
15 Mar 2024 @ 1046183d 2h 35m
14 Sep 2023 @ 081149d 14h 50m
26 Jul 2023 @ 1721 ie18d 3h 18m
08 Jul 2023 @ 1403 ie22d 22h 55m
15 Jun 2023 @ 15081h 18m
15 Jun 2023 @ 1350 ie39m
15 Jun 2023 @ 1310:043m 8s 2m
15 Jun 2023 @ 1308 ie5d 19h 59m
09 Jun 2023 @ 17094m
09 Jun 2023 @ 17052m
09 Jun 2023 @ 1703 ie44d 2h 15m
26 Apr 2023 @ 1448 ie3d 2h 18m
23 Apr 2023 @ 1230 ie214d 22h 16m
20 Sep 2022 @ 14144m 5m
20 Sep 2022 @ 14094m 5m
20 Sep 2022 @ 14044m 14d 18h 53m
05 Sep 2022 @ 1911 ie1h 54m
05 Sep 2022 @ 1717 ie22h 7m
04 Sep 2022 @ 1910 ie1h 0m
04 Sep 2022 @ 1810 ie2d 45m
02 Sep 2022 @ 1725 ie14m
02 Sep 2022 @ 171114d 53m
19 Aug 2022 @ 16182m
19 Aug 2022 @ 16162m
19 Aug 2022 @ 1614 ie7m
19 Aug 2022 @ 16073m
19 Aug 2022 @ 1604 ie1d 23m
18 Aug 2022 @ 1541 ie45d 6h 46m
04 Jul 2022 @ 0855 ie27d 21h 52m
06 Jun 2022 @ 11032m
06 Jun 2022 @ 11012m
06 Jun 2022 @ 1059 ie3m
06 Jun 2022 @ 10563m
06 Jun 2022 @ 1053~2m 2m
06 Jun 2022 @ 10519m
06 Jun 2022 @ 1042 ie2m
06 Jun 2022 @ 1040 ie2m
06 Jun 2022 @ 1038 ie3m
06 Jun 2022 @ 10352m
06 Jun 2022 @ 10333m
06 Jun 2022 @ 1030~1m 2m
06 Jun 2022 @ 1028~1m 2m
06 Jun 2022 @ 1026~1m 3m
06 Jun 2022 @ 1023~1m 2m
06 Jun 2022 @ 1021~2m 4d 17h 1m
01 Jun 2022 @ 17203m
01 Jun 2022 @ 17172m 5m
01 Jun 2022 @ 17124m 7d 2h 24m
25 May 2022 @ 14482m
25 May 2022 @ 14462m
25 May 2022 @ 14442m
25 May 2022 @ 14422m
25 May 2022 @ 14402m
25 May 2022 @ 143837d 19h 39m
17 Apr 2022 @ 1859 ie206d 6h 22m
23 Sep 2021 @ 1237 ie11d 1h 1m
12 Sep 2021 @ 1136 ie25m
12 Sep 2021 @ 11112m
12 Sep 2021 @ 1109 ie7d 15h 32m
04 Sep 2021 @ 193747d 3h 13m
19 Jul 2021 @ 1624 ie22d 4h 37m
27 Jun 2021 @ 11472m
27 Jun 2021 @ 1145 ie11d 20h 58m
15 Jun 2021 @ 14472m
15 Jun 2021 @ 14453m
15 Jun 2021 @ 14427d 19h 20m
07 Jun 2021 @ 192211h 46m
07 Jun 2021 @ 0736 ie26d 12h 14m
11 May 2021 @ 1922 ie2d 4h 55m
09 May 2021 @ 1427 ie20d 8h 4m
19 Apr 2021 @ 0623 ie77d 15h 26m
31 Jan 2021 @ 1357 ie35d 3m
27 Dec 2020 @ 1354 ie4d 23h 48m
22 Dec 2020 @ 1406 ie51d 22h 4m
31 Oct 2020 @ 1702 ie16d 5h 55m
15 Oct 2020 @ 11073m
15 Oct 2020 @ 11044d 17h 27m
10 Oct 2020 @ 1737 ie18d 22h 42m
21 Sep 2020 @ 1855 ie9d 2h 2m
12 Sep 2020 @ 16533m
12 Sep 2020 @ 1650 ie3m
12 Sep 2020 @ 16476m
12 Sep 2020 @ 16412h 2m
12 Sep 2020 @ 14391h 1m
12 Sep 2020 @ 1338 ie5d 19h 53m
06 Sep 2020 @ 1745 ie1h 0m
06 Sep 2020 @ 164558d 6h 35m
10 Jul 2020 @ 10105d 13h 29m
04 Jul 2020 @ 20416m
04 Jul 2020 @ 20354m 3d 5h 5m
01 Jul 2020 @ 1530 ie246d 22h 56m
28 Oct 2019 @ 1634 ie52d 22h 16m
05 Sep 2019 @ 18181h 32m
05 Sep 2019 @ 16464m
05 Sep 2019 @ 16426m
05 Sep 2019 @ 16366m
05 Sep 2019 @ 16301d 4h 47m
04 Sep 2019 @ 11433m
04 Sep 2019 @ 11402m
04 Sep 2019 @ 11382m

Interval Statistics

Interval Count100
Min2m
Max246d 22h 56m
Mean16d 12h 57m
Median1h 0m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
23946 20 Sep 2022 @ 1340 20 Sep 2022 @ 1350 CrisG no visible water, could hear gurgling at depth however. inner catch basins all dry.
15677 22 Aug 2020 @ 1012 22 Aug 2020 @ 1136 User34 Inactive, water gurgling out of sight
15595 16 Aug 2020 @ 0915 16 Aug 2020 @ 1035 User34 Inactive, gurgling out of sight
14814 30 Jun 2020 @ 1819 --- Graham Formation looks very dry and has gurgling at depth.
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
15 Jun 2023 @ 1350 JSJ https://www.flickr.com/photos/jsjgeology/53008233472 Photo of Shell Spring / Shell Geyser erupting in the early afternoon of 15 June 2023.
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.