Last Known Eruption
171d 20h 9m ago

Interval Statistics

Interval Count35
Min15h 10m
Max37y 317d 20h 26m
Mean1y 117d 15h 2m
Median3d 18h 18m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
4284 10 Jun 2017 @ 1051 --- Barbara Lasseter almost no water visible from the loop road
2937 01 Jun 2016 @ 2026 --- JSJ Perpetual spouting, as usual.
2524 13 Aug 2015 @ 0959 --- JSJ Island Geyser was engaged in its usual perpetual spouting.
2523 12 Aug 2015 @ 1009 --- JSJ Island Geyser was engaged in its usual perpetual spouting - observed at 1009 & at 1439.
2522 10 Aug 2015 @ 1937 --- JSJ Island Geyser was engaged in its usual perpetual spouting.
2478 09 Aug 2015 @ 1720 --- JSJ Island Geyser was engaged in perpetual spouting, as usual.
2476 08 Aug 2015 @ 0907 --- JSJ Island Geyser was engaged in perpetual spouting, as usual.
2025 06 Aug 2015 @ 0806 --- JimS Island was not erupting at 0806.
2028 06 Aug 2015 @ 0712 --- JSJ Island Geyser was engaged in its typical perpetual spouting at 0712.
2612 14 May 2015 @ 1852 --- JSJ Island Geyser was engaged in its usual perpetual spouting.
1191 09 Jul 2014 @ 1200 09 Jul 2014 @ 1800 JSJ Island Geyser was engaged in its usual perpetual spouting - observed in early afternoon on 9 July 2014.
1220 03 Jun 2013 @ 0800 03 Jun 2013 @ 1200 JSJ Island Geyser was engaged in its usual perpetual spouting behavior - observed in the late morning of 3 June 2013.
1219 02 Jun 2013 @ 1200 02 Jun 2013 @ 1800 JSJ Island Geyser was engaged in its usual perpetual spouting behavior - observed in the late afternoon on 2 June 2013.
208 08 Jun 2011 @ 0920 08 Jun 2011 @ 1145 LynnS not erupting when checked at 0920 0945 1145
EntrySourceLinkComment
06 Jun 2014 @ 1005 JSJ https://www.youtube.com/watch?v=0xl7sMqd-Dg#t=1m42s Clip 5 of this video compilation (time stamp 1:42 to 2:09) shows Island Geyser erupting during the late morning of 6 June 2014.
12 Aug 2013 @ 1114 JSJ https://www.youtube.com/watch?v=0xl7sMqd-Dg Clips 1-4 of this video compilation (beginning to time stamp 1:41) show Island Geyser erupting during the afternoon of 12 August 2013.
Baseline does not exist.


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