Last Known Eruption
11d 3h 11m ago

Latest Eruptions

Eruption DurationInterval
18 Oct 2020 @ 1428~13m 10m
18 Oct 2020 @ 1418~6m 5d 19h 44m
12 Oct 2020 @ 183412m
12 Oct 2020 @ 182221d 9h 48m
21 Sep 2020 @ 0834~5m 6m
21 Sep 2020 @ 0828~1m 20d 20h 15m
31 Aug 2020 @ 12132d 19h 38m
28 Aug 2020 @ 16352m 11m
28 Aug 2020 @ 16244m 9m
28 Aug 2020 @ 16153m 3d 23h 8m
24 Aug 2020 @ 17071m 6m
24 Aug 2020 @ 17014m 1d 2h 42m
23 Aug 2020 @ 14192m 26m
23 Aug 2020 @ 1353~3m 8m
23 Aug 2020 @ 1345~2.5m 9m
23 Aug 2020 @ 1336~3m 8m
23 Aug 2020 @ 1328~3.5m 11m
23 Aug 2020 @ 1317~3m 8m
23 Aug 2020 @ 1309~3m 12m
23 Aug 2020 @ 1257~3m 9m
23 Aug 2020 @ 1248~2m 11m
23 Aug 2020 @ 123710m
23 Aug 2020 @ 12271d 21h 40m
21 Aug 2020 @ 14471d 5h 25m
20 Aug 2020 @ 0922 ie45m
20 Aug 2020 @ 08372m 2s 1d 17h 47m
18 Aug 2020 @ 145017m 18s 6d 7h 36m
12 Aug 2020 @ 07145d 22h 35m
06 Aug 2020 @ 0839 ns8d 42m
29 Jul 2020 @ 0757 ? ie wc7d 23h 23m
21 Jul 2020 @ 08349m
21 Jul 2020 @ 0825 ie20d 12h 58m
30 Jun 2020 @ 19271m 7m
30 Jun 2020 @ 19201m 1d 5h 43m
29 Jun 2020 @ 13379m 10m
29 Jun 2020 @ 13273m 2d 23h 36m
26 Jun 2020 @ 13514m 281d 1h 50m
19 Sep 2019 @ 1201 ie6d 20h 42m
12 Sep 2019 @ 15197d 2h 54m
05 Sep 2019 @ 122523h 47m
04 Sep 2019 @ 123815m 9d 2h 19m
26 Aug 2019 @ 10191m 18h 50m
25 Aug 2019 @ 15292m 1d 8h 2m
24 Aug 2019 @ 07271m 14h 34m
23 Aug 2019 @ 165319m 13d 6h 55m
10 Aug 2019 @ 09587m 15m
10 Aug 2019 @ 09432m 22m
10 Aug 2019 @ 092137m
10 Aug 2019 @ 08442m 23h 5m
09 Aug 2019 @ 09391d 1h 32m
08 Aug 2019 @ 0807 ie2d 17h 32m
05 Aug 2019 @ 1435 ns2d 22h 10m
02 Aug 2019 @ 1625 ns5h 43m
02 Aug 2019 @ 1042 ie5d 12m
28 Jul 2019 @ 103021h 3m
27 Jul 2019 @ 13271m 8m
27 Jul 2019 @ 13193m 4d 16h 36m
22 Jul 2019 @ 2043 ie2d 5h 29m
20 Jul 2019 @ 15147d 20h 53m
12 Jul 2019 @ 1821 ns14d 22h 8m
27 Jun 2019 @ 201311m 1d 7h 42m
26 Jun 2019 @ 123110m 8m
26 Jun 2019 @ 12234m 1d 22h 40m
24 Jun 2019 @ 134311m 8m
24 Jun 2019 @ 13354m 7d 1h 41m
17 Jun 2019 @ 1154 ie12d 19h 34m
04 Jun 2019 @ 1620 ns13m
04 Jun 2019 @ 16076d 19h 32m
28 May 2019 @ 20356d 2h 57m
22 May 2019 @ 17389m 4d 2h 55m
18 May 2019 @ 14434d 1h 25m
14 May 2019 @ 131811d 1h 51m
03 May 2019 @ 11275d 21h 42m
27 Apr 2019 @ 134512m 1d 19h 12m
25 Apr 2019 @ 183318m 87d 1h 34m
28 Jan 2019 @ 15595d 4h 19m
23 Jan 2019 @ 11408m
23 Jan 2019 @ 11324m 11m
23 Jan 2019 @ 1121 ns6m 1d 22h 39m
21 Jan 2019 @ 1242 ie1y 196d 18h 35m
08 Jul 2017 @ 190754d 1h 18m
15 May 2017 @ 1749 ie21d 34m
24 Apr 2017 @ 1715214d 23h 12m
21 Sep 2016 @ 180315d 57m
06 Sep 2016 @ 17063d 3h 29m
03 Sep 2016 @ 133711d 1h 10m
23 Aug 2016 @ 122714m 1d 19h 14m
21 Aug 2016 @ 171310m 22d 59m
30 Jul 2016 @ 1614 ie9d 22h 14m
20 Jul 2016 @ 18009d 2h 24m
11 Jul 2016 @ 15362d 23h 25m
08 Jul 2016 @ 161114d 22h 36m
23 Jun 2016 @ 17356m
23 Jun 2016 @ 172914d 1h 27m
09 Jun 2016 @ 1602 ie1d 7h 37m
08 Jun 2016 @ 08251d 14h 52m
06 Jun 2016 @ 173315d 2h 10m
22 May 2016 @ 15239m
22 May 2016 @ 151414m
22 May 2016 @ 150011m

Interval Statistics

Interval Count100
Min6m
Max1y 196d 18h 35m
Mean16d 2h 23m
Median1d 20h 27m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
15772 28 Aug 2020 @ 1641 28 Aug 2020 @ 1733 BrianR Sporadic bursting up to 6 ft at start of note to 1 ft at end
15724 24 Aug 2020 @ 1710 24 Aug 2020 @ 1746 BrianR Sporadic bursting to 6 ft
15722 24 Aug 2020 @ 1019 24 Aug 2020 @ 1035 BrianR Sporadic splashes 1 to 2 ft
15718 23 Aug 2020 @ 1421 23 Aug 2020 @ 1431 BrianR Sporadic bursting from 2 to 4 ft
15717 23 Aug 2020 @ 1410 23 Aug 2020 @ 1413 BrianR Grotto Fountain like boil
15064 21 Jul 2020 @ 0847 --- William splashed to 2' but did not erupt
15063 21 Jul 2020 @ 0842 --- William splashed to 2' but did not erupt
14982 14 Jul 2020 @ 1628 14 Jul 2020 @ 1632 nails Intermittent splashing to a few feet
14819 30 Jun 2020 @ 1940 30 Jun 2020 @ 2000 BrianR Sporadic bursting to 6 ft Still going when I left the Grotto area
14797 29 Jun 2020 @ 1348 29 Jun 2020 @ 1435 BrianR Sporadic bursting to 6 ft
14742 26 Jun 2020 @ 1432 26 Jun 2020 @ 1440 BrianR Sporadic bursting to 2 ft , started and ended during Rocket Major
14741 26 Jun 2020 @ 1359 26 Jun 2020 @ 1426 BrianR Sporadic bursting to 6 ft, ended when Rocket Major started
13407 26 Aug 2019 @ 1020 26 Aug 2019 @ 1037 BrianR Sporadic bursting up to 6ft
13403 25 Aug 2019 @ 1533 25 Aug 2019 @ 1545 BrianR Sporadic bursting to 2 ft
13371 24 Aug 2019 @ 0730 24 Aug 2019 @ 0822 BrianR Sporadic bursting up to 6 ft before 8:00 up to 2 ft after
13367 23 Aug 2019 @ 1720 23 Aug 2019 @ 1812 BrianR Sporadic bursting 1 to 4 ft
12821 27 Jul 2019 @ 1330 27 Jul 2019 @ 1350 nails Intermittent bursting 1 to 6+ feet.
11980 26 Jun 2019 @ 1242 26 Jun 2019 @ 1342 BrianR Sporadic bursting 2 to 6 ft
11945 25 Jun 2019 @ 0648 25 Jun 2019 @ 0732 BrianR Sporadic bursting 2 to 6 ft
11944 24 Jun 2019 @ 1401 24 Jun 2019 @ 1436 BrianR Sporadic bursting 2 to 6 ft
11923 22 Jun 2019 @ 1241 22 Jun 2019 @ 1300 BrianR Sporadic bursts 2 to 3 ft
11902 21 Jun 2019 @ 1101 21 Jun 2019 @ 1147 BrianR Sporadic bursting 2 to 6 ft
5613 02 Sep 2017 @ 1745 --- WillBoekel weak splashing that looks like it is coming from depth.
2434 28 Sep 2015 @ 1005 --- Tara Splashing to about 1 foot.
854 03 Jul 2006 @ 0700 --- Tara South Grotto Fountain was active having eruptions at intervals of 7 to 15 minutes starting sometime before 0700. The eruptions alternated with high water levels in Indicator Spring and boiling episodes in Grotto Fountain.
7075 27 Oct 1992 @ 0000 27 Oct 1992 @ 2359 JarnoO no time given; d=17m16s
EntrySourceLinkComment
26 Jun 2020 @ 1353 JoeN https://www.youtube.com/watch?v=nxyrJ5gkvQA SGF video
06 Jun 2016 @ 1733 JSJ https://www.flickr.com/photos/jsjgeology/30892530906 Photo (1 of 5) of South Grotto Fountain Geyser's 5:33 PM-onward eruption on 6 June 2016.
06 Jun 2016 @ 1733 JSJ https://www.youtube.com/watch?v=m-Yr-A9rNLU All ten clips of this video compilation show South Grotto Fountain Geyser's 5:33 PM-onward eruption on 6 June 2016.
Baseline does not exist.