Last Known Eruption
13h 56m ago

Latest Eruptions

Eruption DurationInterval
17 Jul 2019 @ 1905 ns maj19m
17 Jul 2019 @ 1846 wc maj6h 12m
17 Jul 2019 @ 1234 wc maj4d 16h 49m
12 Jul 2019 @ 1945 maj2d 5h 10m
10 Jul 2019 @ 1435 ie wc maj6d 22h 45m
03 Jul 2019 @ 1550 maj7m 3d 2h 6m
30 Jun 2019 @ 1344 maj9m 1d 19h 21m
28 Jun 2019 @ 1823 wc maj~4m 15d 6h 4m
13 Jun 2019 @ 1219 maj23h 36m
12 Jun 2019 @ 1243 ie maj1d 2h 22m
11 Jun 2019 @ 1021 ns maj8m 3d 22h 49m
07 Jun 2019 @ 1132 maj1d 14h 44m
05 Jun 2019 @ 2048 maj8m 3d 7h 16m
02 Jun 2019 @ 1332 maj~3m 21h 55m
01 Jun 2019 @ 1537 maj8m 58s 9h 11m
01 Jun 2019 @ 0626 ie maj15h 47m
31 May 2019 @ 14392d 35m
29 May 2019 @ 140413d 1h 21m
16 May 2019 @ 1243 ie wc maj1d 22h 8m
14 May 2019 @ 1435 ie wc maj9d 6h 28m
05 May 2019 @ 0807 maj6m 38s 16d 21h 19m
18 Apr 2019 @ 1048 ie180d 20h 48m
19 Oct 2018 @ 14009d 1h 13m
10 Oct 2018 @ 1247 ie1d 2h 39m
09 Oct 2018 @ 1007:1221h 0m
08 Oct 2018 @ 1307 maj3h 7m
08 Oct 2018 @ 1000 maj15h 24m
07 Oct 2018 @ 1836 maj2d 44m
05 Oct 2018 @ 1752 maj3h 34m
05 Oct 2018 @ 1418 maj~4m 2d 4h 44m
03 Oct 2018 @ 0934 maj12h 44m
02 Oct 2018 @ 2050 maj6h 31m
02 Oct 2018 @ 1419 maj1d 52m
01 Oct 2018 @ 1327 maj1d 16m
30 Sep 2018 @ 1311 ns1d 5h 38m
29 Sep 2018 @ 0733 ie maj11h 54m
28 Sep 2018 @ 1939 maj3h 6m
28 Sep 2018 @ 1633 maj3h 41m
28 Sep 2018 @ 1252 maj14m
28 Sep 2018 @ 1238 maj~5m 17h 48m
27 Sep 2018 @ 1850 maj1d 1h 5m
26 Sep 2018 @ 1745 maj4h 48m
26 Sep 2018 @ 1257 maj6h 9m
26 Sep 2018 @ 0648 maj11h 56m
25 Sep 2018 @ 1852 maj6h 22m
25 Sep 2018 @ 1230 maj2d 15h 27m
22 Sep 2018 @ 2103 maj4h 7m
22 Sep 2018 @ 1656 ie maj21h 52m
21 Sep 2018 @ 1904 maj4h 40m
21 Sep 2018 @ 1424 maj~4m 4h 19m
21 Sep 2018 @ 100513h 56m
20 Sep 2018 @ 2009 maj1d 4h 10m
19 Sep 2018 @ 1559 maj6m 1d 4m
18 Sep 2018 @ 1555 ie1d 8m
17 Sep 2018 @ 1547 maj~3m 1d 2h 0m
16 Sep 2018 @ 1347 maj1d 1h 54m
15 Sep 2018 @ 1153 maj~5.5m 15m
15 Sep 2018 @ 1138 maj~3m 2h 46m
15 Sep 2018 @ 0852 maj1d 14h 45m
13 Sep 2018 @ 1807 maj8h 45m
13 Sep 2018 @ 09225m 16h 0m
12 Sep 2018 @ 17225m 6h 39m
12 Sep 2018 @ 1043 ie22h 47m
11 Sep 2018 @ 1156 ie4h 1m
11 Sep 2018 @ 0755 maj4m 2d 17h 3m
08 Sep 2018 @ 1452 maj2h 56m
08 Sep 2018 @ 1156 maj12h 33m
07 Sep 2018 @ 2323 maj3h 34m
07 Sep 2018 @ 1949 maj22m
07 Sep 2018 @ 1927 A2h 24m
07 Sep 2018 @ 1703 maj5h 31m
07 Sep 2018 @ 1132 maj3h 11m
07 Sep 2018 @ 0821 maj4.75m 17h 34m
06 Sep 2018 @ 1447 maj4h 11m
06 Sep 2018 @ 1036 maj3h 26m
06 Sep 2018 @ 0710 maj7.5m 12h 43m
05 Sep 2018 @ 1827 maj~3.5m 4h 23m
05 Sep 2018 @ 1404 maj4.5m 3h 41m
05 Sep 2018 @ 1023 ie maj3h 0m
05 Sep 2018 @ 07235m 17h 10m
04 Sep 2018 @ 14133m 16s 21h 33m
03 Sep 2018 @ 1640~4m 7h 6m
03 Sep 2018 @ 0934 maj17h 38m
02 Sep 2018 @ 1556 maj1d 4h 44m
01 Sep 2018 @ 1112 maj1h 58m
01 Sep 2018 @ 0914 maj5m 14h 48m
31 Aug 2018 @ 1826 ns maj1d 53m
30 Aug 2018 @ 1733 maj4.54h 19m
30 Aug 2018 @ 1314 maj4m 6h 10m
30 Aug 2018 @ 0704 maj6m 8h 41m
29 Aug 2018 @ 2223 maj4.5m 3h 43m
29 Aug 2018 @ 1840 maj6.5m 4h 50m
29 Aug 2018 @ 1350 maj3.5m 3h 11m
29 Aug 2018 @ 1039 maj4m 12h 6m
28 Aug 2018 @ 2233 ? ns8h 59m
28 Aug 2018 @ 13343.5m 10m
28 Aug 2018 @ 13244m 3h 53m
28 Aug 2018 @ 0931 maj3.5m 20h 53m
27 Aug 2018 @ 1238 maj6m 5h 13m
27 Aug 2018 @ 0725 maj4m 13h 32m

Interval Statistics

Interval Count100
Min10m
Max180d 20h 48m
Mean3d 6h 0m
Median13h 44m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
11593 05 Jun 2019 @ 1220 05 Jun 2019 @ 1606 TinaN No eruption during the first 3h 46m of Grotto
11585 04 Jun 2019 @ 1613 04 Jun 2019 @ 1846 TinaN Watched entire Grotto eruption and didn't see a Rocket major
8875 18 Jun 2018 @ 1815 --- Polly Possible Rocket (from Inn parking lot)
8874 18 Jun 2018 @ 1354 --- Polly Possible Rocket 1354 ie. (From Inn parking lot - steam in Grotto area - straight up)
7696 24 Sep 2017 @ 1707 --- Polly Tall Rocket splash (15-20').
4451 11 Jul 2017 @ 1724 --- Kitt B Rocket erupted a couple minutes before Grotto started and another Rocket at 1753.
2254 01 Sep 2015 @ 1341 --- BB We were at Tilt's Baby and saw water spikes above the trees in the Grotto area, d ~ 8m, maybe a Rocket major?
2150 14 Aug 2015 @ 1215 --- JSJ Already off at 1215.
EntrySourceLinkComment
11 Aug 2014 @ 1357 JSJ https://www.youtube.com/watch?v=qhm8eipfeWo Video that includes clips showing Rocket Geyser's 1:57 to 2:04 PM major eruption on 11 August 2014.
11 Aug 2014 @ 1357 JSJ https://www.flickr.com/photos/jsjgeology/15278920020 Photo (1 of 9) of Rocket Geyser's 1:57 to 2:04 PM major eruption on 11 August 2014.
BaselineDistance (ft)Description
Bike Path 100On the edge of the bike path close to the end of the Grotto Fountain bench.


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