Last Known Eruption
2d 5h 23m ago

Latest Eruptions

Eruption DurationInterval
18 Sep 2021 @ 0208 wc maj6d 8h 53m
11 Sep 2021 @ 1715 maj4m 22h 43m
10 Sep 2021 @ 1832 maj8h 3m
10 Sep 2021 @ 1029 maj3m 11m
10 Sep 2021 @ 1018 maj4m 14h 23m
09 Sep 2021 @ 1955 maj~9m 6h 15m
09 Sep 2021 @ 1339:19 maj~6m 15s 19h 28m
08 Sep 2021 @ 1811 maj23h 58m
07 Sep 2021 @ 1813 maj7m 7h 55m
07 Sep 2021 @ 1018 maj3.5m 14h 1m
06 Sep 2021 @ 2017 maj~4m 1d 2h 53m
05 Sep 2021 @ 1724 ie maj17m
05 Sep 2021 @ 1707 maj5d 20h 51m
30 Aug 2021 @ 2016 ns maj7h 44m
30 Aug 2021 @ 1232 maj8m 17h 41m
29 Aug 2021 @ 1851 maj~4m 7h 23m
29 Aug 2021 @ 1128 maj6m 2d 3h 34m
27 Aug 2021 @ 07547m 14h 8m
26 Aug 2021 @ 1746 maj4m 17m
26 Aug 2021 @ 1729 maj2m 2d 3h 44m
24 Aug 2021 @ 1345 maj4m 8d 20h 2m
15 Aug 2021 @ 1743 wc maj5h 49m
15 Aug 2021 @ 1154 maj3m 12m
15 Aug 2021 @ 1142 maj4m 15h 21m
14 Aug 2021 @ 2021 maj6m 25s 7h 30m
14 Aug 2021 @ 1251 maj4m 54s 2d 23h 10m
11 Aug 2021 @ 1341 maj5m 21h 16m
10 Aug 2021 @ 1625 maj2m 6d 22h 16m
03 Aug 2021 @ 1809 ns maj6h 9m
03 Aug 2021 @ 1200 maj3.5m 4h 36m
03 Aug 2021 @ 0724 ie maj14h 30m
02 Aug 2021 @ 1654 maj2d 6h 12m
31 Jul 2021 @ 1042 maj6m 17h 31m
30 Jul 2021 @ 1711 maj4d 48m
26 Jul 2021 @ 1622:15 maj12m 2s 5h 45m 30s
26 Jul 2021 @ 1036:45 maj4h 37m
26 Jul 2021 @ 0559 ie maj>3.5m 39m
26 Jul 2021 @ 0520 A maj12h 4m
25 Jul 2021 @ 1716 maj8h 23m
25 Jul 2021 @ 0853 maj4d 15h 23m
20 Jul 2021 @ 1730 maj11m 5h 43m
20 Jul 2021 @ 1147 maj9.510m
20 Jul 2021 @ 1137 maj4m 18h 24m
19 Jul 2021 @ 1713 maj4.5m 3h 52m
19 Jul 2021 @ 1321 maj8m 2h 36m
19 Jul 2021 @ 1045 maj1m 2h 50m
19 Jul 2021 @ 0755 maj3m 12h 29m
18 Jul 2021 @ 1926 maj4.5m 1d 1h 48m
17 Jul 2021 @ 1738 maj4.5m 6h 26m
17 Jul 2021 @ 1112 maj3m 15h 25m
16 Jul 2021 @ 1947 ie maj4d 7h 5m
12 Jul 2021 @ 1242 maj2.5m 13m
12 Jul 2021 @ 1229 maj4.5m 20h 54m
11 Jul 2021 @ 1535 maj4d 1h 33m
07 Jul 2021 @ 1402 maj~4m 10d 2h 30m
27 Jun 2021 @ 1132 maj~5m 2d 15h 10m
24 Jun 2021 @ 2022 maj~6m 3d 2h 44m
21 Jun 2021 @ 1738 maj~9m 3d 22h 38m
17 Jun 2021 @ 1900 maj14m
17 Jun 2021 @ 1846 maj21h 49m
16 Jun 2021 @ 2057 maj6m
16 Jun 2021 @ 2051 maj4m 2h 38m
16 Jun 2021 @ 1813 maj6h 0m
16 Jun 2021 @ 1213 maj5m 23h 30m
15 Jun 2021 @ 1243 maj7m 5h 25m
15 Jun 2021 @ 0718 ns maj11h 52m
14 Jun 2021 @ 1926 maj4h 49m
14 Jun 2021 @ 1437 maj~4m 12m
14 Jun 2021 @ 1425 maj~4m 22h 27m
13 Jun 2021 @ 1558 maj6m 6h 50m
13 Jun 2021 @ 0908 maj12h 58m
12 Jun 2021 @ 2010 maj6m 5h 41m
12 Jun 2021 @ 1429 maj12m
12 Jun 2021 @ 1417 maj7h 12m
12 Jun 2021 @ 0705 maj5m 2d 15h 21m
09 Jun 2021 @ 1544 maj5m 6h 51m
09 Jun 2021 @ 0853 maj6m 4d 30m
05 Jun 2021 @ 0823 maj14h 37m
04 Jun 2021 @ 1746 majD44h 6m
04 Jun 2021 @ 1340 maj3d 20h 4m
31 May 2021 @ 1736 maj~6.5m 5h 32m
31 May 2021 @ 1204 maj~4m 3d 3h 11m
28 May 2021 @ 0853 maj1d 12h 57m
26 May 2021 @ 19561d 3h 42m
25 May 2021 @ 1614 ie maj12d 42m
13 May 2021 @ 1532 maj>3m 7d 19h 25m
05 May 2021 @ 2007 ie wc4d 3h 42m
01 May 2021 @ 1625 ie wc maj7h 27m
01 May 2021 @ 0858 ns wc maj7d 21h 36m
23 Apr 2021 @ 1122 maj~3m 4d 16h 17m
18 Apr 2021 @ 19051d 8h 15m
17 Apr 2021 @ 1050 ? maj4m
17 Apr 2021 @ 1046 maj3m 101d 23h 53m
05 Jan 2021 @ 0953 ie maj52d 23h 33m
13 Nov 2020 @ 1020 wc maj5m 1s 13d 22h 53m
30 Oct 2020 @ 1227 ie wc maj1d 28m
29 Oct 2020 @ 1159 maj19d 18h 56m
09 Oct 2020 @ 1703 wc maj5m 6s 6h 36m
09 Oct 2020 @ 1027 ie maj23h 16m
08 Oct 2020 @ 1111 maj~6m 4d 13h 23m

Interval Statistics

Interval Count100
Min4m
Max101d 23h 53m
Mean3d 11h 48m
Median14h 59m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
19482 11 Sep 2021 @ 1733 11 Sep 2021 @ 1739 User34 Having big sporadic bursts while Grotto was "off", then two of the "Little Buddies" came on strong as Grotto restarted
17687 12 Jun 2021 @ 0644 --- CraigC water spitting out aggressively from the right "mouth" vent
16877 17 Apr 2021 @ 1058 17 Apr 2021 @ 1100 User34 Seemed to want to major again, some big heavy splashes during this time
15964 04 Sep 2020 @ 1900 04 Sep 2020 @ 2035 William no rocket maj during this time, grotto still ie when I left.
13231 14 Aug 2019 @ 1256 --- JarnoO (wc) Possible eruption (start) at this time, just between two cam outages. Column appeared at the right spot for Rocket and I may have seen some water in there on the still frame.
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
15 Aug 2020 @ 1702 JSJ https://www.youtube.com/watch?v=UejD5KhAYwg Video by Craig Corless of Rocket Geyser's 5:02 PM-onward major eruption on 15 August 2020.
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.