Last Known Eruption
74d 3h 20m ago

Latest Eruptions

Eruption DurationInterval
07 Aug 2020 @ 1103 ie2d 0m
05 Aug 2020 @ 1103 ie18h 52m
04 Aug 2020 @ 1611 ie2d 21h 24m
01 Aug 2020 @ 1847 ie60d 9h 41m
02 Jun 2020 @ 0906 ie296d 20h 2m
10 Aug 2019 @ 1304 ie9d 3h 51m
01 Aug 2019 @ 0913 ie5d 20h 8m
26 Jul 2019 @ 1305 ie24d 3h 3m
02 Jul 2019 @ 1002 ie7d 13h 34m
24 Jun 2019 @ 2028 ie10d 7h 48m
14 Jun 2019 @ 1240 ie1d 44m
13 Jun 2019 @ 1156 ie2d 1h 24m
11 Jun 2019 @ 1032 ie23h 25m
10 Jun 2019 @ 1107 ie1d 4h 16m
09 Jun 2019 @ 0651 ie18h 52m
08 Jun 2019 @ 1159 ie2d 1h 7m
06 Jun 2019 @ 1052 ie2d 13h 33m
03 Jun 2019 @ 2119 ie2d 7h 21m
01 Jun 2019 @ 1358 ie214d 5h 30m
30 Oct 2018 @ 0828 ie84d 21h 13m
06 Aug 2018 @ 1115 ie3d 18h 18m
02 Aug 2018 @ 1657 ie45d 21h 26m
17 Jun 2018 @ 1931 ie2d 5h 54m
15 Jun 2018 @ 1337 ie1d 11m
14 Jun 2018 @ 1326 ie2d 19h 58m
11 Jun 2018 @ 1728 ie7d 34m
04 Jun 2018 @ 1654 ie2d 6h 55m
02 Jun 2018 @ 0959 ie15h 25m
01 Jun 2018 @ 1834 ie283d 7h 21m
22 Aug 2017 @ 1113 ie4d 2h 9m
18 Aug 2017 @ 0904 ie9d 20h 44m
08 Aug 2017 @ 1220 ie5d 23h 57m
02 Aug 2017 @ 1223 ie1d 22h 0m
31 Jul 2017 @ 1423 ie1d 2h 24m
30 Jul 2017 @ 1159 ie1d 40m
29 Jul 2017 @ 1119 ie1d 23h 44m
27 Jul 2017 @ 1135 ie1d 14h 51m
25 Jul 2017 @ 2044 ie51d 6h 41m
04 Jun 2017 @ 1403 ie2d 2h 45m
02 Jun 2017 @ 1118 ie15h 10m
01 Jun 2017 @ 2008 ie299d 10h 12m
06 Aug 2016 @ 0956 ie17h 45m
05 Aug 2016 @ 1611 ie1d 1h 13m
04 Aug 2016 @ 1458 ie1d 2h 37m
03 Aug 2016 @ 1221 ie1d 2h 46m
02 Aug 2016 @ 0935 ie41d 15h 55m
21 Jun 2016 @ 17402y 16d 7h 35m
06 Jun 2014 @ 1005 ie1d 23h 45m
04 Jun 2014 @ 1020 ie282d 19h 5m
25 Aug 2013 @ 1515 ie13d 4h 1m
12 Aug 2013 @ 1114 ie2y 66d 1h 54m
08 Jun 2011 @ 092013d 14h 50m
25 May 2011 @ 1830354d 11h 54m
05 Jun 2010 @ 063612y 222d 13h 57m
28 Oct 1997 @ 1539 ie1y 164d 6h 15m
17 May 1996 @ 102423y 296d 14m
31 Jul 1972 @ 1010

Interval Statistics

Interval Count56
Min15h 10m
Max23y 296d 14m
Mean313d 4h 43m
Median3d 7h 51m

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
15216 17 May 1996 @ 2100 --- JarnoO not ie
15215 17 May 1996 @ 0900 --- JarnoO dormant; Firehole River very high water
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.