Last Known Eruption
221d 12h 33m ago

Latest Eruptions

Eruption DurationInterval
14 Oct 2023 @ 111615d 23h 59m
28 Sep 2023 @ 1117 ie1h 5m
28 Sep 2023 @ 1012 ie8d 23h 31m
19 Sep 2023 @ 1041 ie1d 23h 33m
17 Sep 2023 @ 1108 ie1h 38m
17 Sep 2023 @ 0930 ie4d 22h 13m
12 Sep 2023 @ 1117 ie32m
12 Sep 2023 @ 10451d 21h 21m
10 Sep 2023 @ 1324 ie31m
10 Sep 2023 @ 1253 ie34m
10 Sep 2023 @ 1219 ie2h 8m
10 Sep 2023 @ 1011 ie2h 9m
10 Sep 2023 @ 0802 ie3d 20h 24m
06 Sep 2023 @ 1138 ie21d 22h 38m
15 Aug 2023 @ 130037d 35m
09 Jul 2023 @ 122531m
09 Jul 2023 @ 115432m
09 Jul 2023 @ 112231m
09 Jul 2023 @ 105132m
09 Jul 2023 @ 101932m
09 Jul 2023 @ 09479d 19h 20m
29 Jun 2023 @ 1427 ie3h 16m
29 Jun 2023 @ 1111 ie1h 34m
29 Jun 2023 @ 0937 ie4d 18h 52m
24 Jun 2023 @ 1445 ie1h 3m
24 Jun 2023 @ 13421h 5m
24 Jun 2023 @ 12373d 25m
21 Jun 2023 @ 12124m 32m
21 Jun 2023 @ 11404m 32m
21 Jun 2023 @ 11083m 18h 15m
20 Jun 2023 @ 1653 ie33m
20 Jun 2023 @ 162034m
20 Jun 2023 @ 15462m 30s 30m
20 Jun 2023 @ 15162m 33m
20 Jun 2023 @ 14434m 30m
20 Jun 2023 @ 141335m
20 Jun 2023 @ 133832m
20 Jun 2023 @ 13064m 32m
20 Jun 2023 @ 12342m 30m
20 Jun 2023 @ 120412d 21h 27m
07 Jun 2023 @ 1437 ie4h 18m
07 Jun 2023 @ 1019 ie2d 17h 58m
04 Jun 2023 @ 1621 ie1h 37m
04 Jun 2023 @ 1444 ie32m
04 Jun 2023 @ 1412 ie1h 4m
04 Jun 2023 @ 1308 ie1h 4m
04 Jun 2023 @ 1204 ie31m
04 Jun 2023 @ 1133 ie34m
04 Jun 2023 @ 1059 ie31m
04 Jun 2023 @ 1028 ie1h 6m
04 Jun 2023 @ 0922 ie1h 3m
04 Jun 2023 @ 0819 ie8d 1h 12m
27 May 2023 @ 0707 ie3d 15h 35m
23 May 2023 @ 1532 ie1h 4m
23 May 2023 @ 1428 ie32m
23 May 2023 @ 1356 ie32m
23 May 2023 @ 1324 ie30m
23 May 2023 @ 1254 ie32m
23 May 2023 @ 1222 ie32m
23 May 2023 @ 1150 ie33m
23 May 2023 @ 1117 ie32m
23 May 2023 @ 1045 ie32m
23 May 2023 @ 1013 ie33m
23 May 2023 @ 0940 ie34m
23 May 2023 @ 0906 ie1h 36m
23 May 2023 @ 0730 ie2d 19h 48m
20 May 2023 @ 1142 ie1h 5m
20 May 2023 @ 1037 ie1d 21h 50m
18 May 2023 @ 1247 ie2d 2h 55m
16 May 2023 @ 0952 ie35m
16 May 2023 @ 0917 ie125d 18h 29m
10 Jan 2023 @ 1348 ie101d 23h 2m
30 Sep 2022 @ 1546 ie1h 9m
30 Sep 2022 @ 1437 ie2h 29m
30 Sep 2022 @ 1208 ie37m
30 Sep 2022 @ 1131 ie2h 43m
30 Sep 2022 @ 0848 ie1d 20h 52m
28 Sep 2022 @ 11561d 20h 17m
26 Sep 2022 @ 153935m
26 Sep 2022 @ 150435m
26 Sep 2022 @ 142933m
26 Sep 2022 @ 13562d 4h 56m
24 Sep 2022 @ 0900 ie11d 19h 45m
12 Sep 2022 @ 1315 ie138d 2h 54m
27 Apr 2022 @ 1021 ie345d 14h 34m
16 May 2021 @ 1947 ie197d 5h 54m
31 Oct 2020 @ 1353 ie

Interval Statistics

Interval Count86
Min30m
Max345d 14h 34m
Mean12d 12h 48m
Median1h 4m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
24128 26 Sep 2022 @ 1615 --- Graham Git very steamy but wind.direction preventing me seeing water.
13174 11 Aug 2019 @ 1303 --- JSJ Pool nearly full at 1303 - was low a little bit ago. 1307 - water level already lowered to out-of-sight.
4193 03 Jun 2017 @ 1200 03 Jun 2017 @ 1441 JSJ Basin nearly full, with a low doming eruption at 1200, then calmed down; water almost out of sight at 1203. Water visible at 1222. Water not visible at 1225. Water visible at 1301; nearly full basin & roiling at 1302 to 1305; water level lower at 1306; water out of sight at 1308. Basin full and overflowing at 1335, with roiling-boiling; water level lower at 1336. Water visible in basin at 1407, with low roiling-boiling; slightly calmer at 1410; water level lowered at 1411. Basin full & overflowing at 1441, with roiling; water level then lowered at 1441 - still with moderate to slight roiling.
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Baseline does not exist.