Last Known Eruption
17h 32m ago

Latest Eruptions

Eruption DurationInterval
19 Sep 2021 @ 15491h 27m 5d 3h 59m
14 Sep 2021 @ 11501h 22m 4h 55m
14 Sep 2021 @ 0655 ie22h 50m
13 Sep 2021 @ 0805 ns3h 21m 18h 11m
12 Sep 2021 @ 1354 ie3d 5h 53m
09 Sep 2021 @ 0801 ns~6h 55m 4d 19h 47m
04 Sep 2021 @ 1214~44m 58m
04 Sep 2021 @ 111614m 20h 7m
03 Sep 2021 @ 150944m 5h 12m
03 Sep 2021 @ 09571h 6m 2d 18h 37m
31 Aug 2021 @ 1520 ns4h 55m 3h 5m
31 Aug 2021 @ 12151h 26m 1d 19h 55m
29 Aug 2021 @ 16201h 28m 5h 2m
29 Aug 2021 @ 11181h 23m 3h 49m
29 Aug 2021 @ 0729 ieIn overflow.3d 10m
26 Aug 2021 @ 0719 ie16h 19m
25 Aug 2021 @ 1500 ns~1h 26m 4h 26m
25 Aug 2021 @ 10341h 23m 16h 38m
24 Aug 2021 @ 17569d 8h 6m
15 Aug 2021 @ 0950 ie1d 15h 44m
13 Aug 2021 @ 18065h 56m
13 Aug 2021 @ 12102d 32m
11 Aug 2021 @ 1138 ns2d 22h 28m
08 Aug 2021 @ 1310 ie6d 16h 36m
01 Aug 2021 @ 2034 ie4d 13h 47m
28 Jul 2021 @ 06471h 33m 23h 16m
27 Jul 2021 @ 07312d 13h 17m
24 Jul 2021 @ 1814 ie12h 4m
24 Jul 2021 @ 06101d 21h 20m
22 Jul 2021 @ 0850 ie22h 47m
21 Jul 2021 @ 10032d 15h 33m
18 Jul 2021 @ 1830 ie1d 5h 12m
17 Jul 2021 @ 131817h 39m
16 Jul 2021 @ 1939 ie3h 59m
16 Jul 2021 @ 1540 ie2d 20h 50m
13 Jul 2021 @ 1850 ie22h 19m
12 Jul 2021 @ 20315h 3m
12 Jul 2021 @ 1528 ie23h 13m
11 Jul 2021 @ 1615 ns3d 8h 28m
08 Jul 2021 @ 0747 ie1d 13h 15m
06 Jul 2021 @ 1832 ie3d 22h 0m
02 Jul 2021 @ 2032 ie6h 19m
02 Jul 2021 @ 1413<1h 37m 2d 52m
30 Jun 2021 @ 1321~1h 29m 4h 36m
30 Jun 2021 @ 0845 ns15h 13m
29 Jun 2021 @ 1732 ie7m
29 Jun 2021 @ 1725 ie1d 7h 20m
28 Jun 2021 @ 1005 ie23h 48m
27 Jun 2021 @ 10175d 4h 12m
22 Jun 2021 @ 0605 ie1d 12h 21m
20 Jun 2021 @ 174410h 10m
20 Jun 2021 @ 073417h 37m
19 Jun 2021 @ 1357 ie4h 31m
19 Jun 2021 @ 09262d 19h 13m
16 Jun 2021 @ 14135h 11m
16 Jun 2021 @ 090220h 12m
15 Jun 2021 @ 1250 ie4h 50m
15 Jun 2021 @ 0800 ie20h 48m
14 Jun 2021 @ 111243m 1d 14h 14m
12 Jun 2021 @ 2058 ie6h 48m
12 Jun 2021 @ 1410 ie4h 21m
12 Jun 2021 @ 0949 ie19h 34m
11 Jun 2021 @ 1415 ie58m
11 Jun 2021 @ 1317 ie1d 20h 43m
09 Jun 2021 @ 16341h 35m 3h 41m
09 Jun 2021 @ 1253 ie4h 11m
09 Jun 2021 @ 084221h 12m
08 Jun 2021 @ 11301h 34m 19h 0m
07 Jun 2021 @ 1630 ie6h 14m
07 Jun 2021 @ 1016 ns14h 18m
06 Jun 2021 @ 1958 ns4h 14m
06 Jun 2021 @ 1544 ie19h 47m
05 Jun 2021 @ 1957 ns5h 55m
05 Jun 2021 @ 1402 ns5h 7m
05 Jun 2021 @ 08551h 33m 15h 12m
04 Jun 2021 @ 17431d 3h 6m
03 Jun 2021 @ 14371h 43m 5h 31m
03 Jun 2021 @ 0906~1h 40m 16h 7m
02 Jun 2021 @ 1659 ie4h 9m
02 Jun 2021 @ 1250 ie5h 33m
02 Jun 2021 @ 0717 ie11h 1m
01 Jun 2021 @ 2016 ie5h 5m
01 Jun 2021 @ 1511 ie20h 40m
31 May 2021 @ 1831 ie6h 17m
31 May 2021 @ 121415h 11m
30 May 2021 @ 2103 ie6h 18m
30 May 2021 @ 14451h 41m 5h 13m
30 May 2021 @ 0932 ns3h 59m
30 May 2021 @ 0533 ie12h 32m
29 May 2021 @ 1701 ie1d 23h 36m
27 May 2021 @ 1725 ie2h 32m
27 May 2021 @ 1453 ie4h 28m
27 May 2021 @ 1025 ns7d 16h 16m
19 May 2021 @ 1809 ie1d 23h 29m
17 May 2021 @ 1840 ie1d 1h 20m
16 May 2021 @ 1720 ie3d 1m
13 May 2021 @ 1719 ie5h 18m
13 May 2021 @ 120116h 6m
12 May 2021 @ 19555h 3m
12 May 2021 @ 1452 ie1d 21h 22m

Interval Statistics

Interval Count100
Min7m
Max9d 8h 6m
Mean1d 7h 39m
Median17h 38m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
19533 13 Sep 2021 @ 0749 --- Graham Water rising calmly.
19513 12 Sep 2021 @ 1424 --- Graham Pools connected with calm water. Dropping 1426.
19407 09 Sep 2021 @ 1456 --- Graham Spasm end time after Fountain. D~6h55m! No eruption by 1935.
19399 09 Sep 2021 @ 0748 --- Graham Water pooled and visible in the crater.
19209 31 Aug 2021 @ 2015 --- Graham Quit at 2015.
19188 31 Aug 2021 @ 1512 --- Graham Water standing in Spasm and Jelly just below the beach, refilled after Fountain. This is the 5th pause in Clepsydra. 1516 rising and both pools are connected. 1520 still rising and bubbling.
19180 31 Aug 2021 @ 0726 --- Graham Nearly full but dropping. Clepsydra side pool splashing over the rim. 0804 steaming and Jelly only dropped a little, just below the beach, but then drained empty during Fountain.
19153 29 Aug 2021 @ 0947 --- Graham Water pooling in the vent with no splashing. Dropped after Clepsydra restarted from 4th pause. It was empty during Fountain eruption.
18801 02 Aug 2021 @ 0900 02 Aug 2021 @ 1245 Brian Empty and inactive during this period of time
18657 25 Jul 2021 @ 1040 --- LynnS Empty and quiet
18632 24 Jul 2021 @ 0854 --- LynnS Crater is empty
18263 03 Jul 2021 @ 1910 --- William quit within the last 5 minutes
17986 21 Jun 2021 @ 2016 --- Tara Empty.
17772 14 Jun 2021 @ 1155 --- LynnS Stopped bursting and started draining.; completely drained by 1205
17484 05 Jun 2021 @ 0925 --- Graham First overflow.
17485 05 Jun 2021 @ 0820 --- Graham Came up strong, looked like it was starting as splashes reached above the rim but then it drained by 0828.
17289 30 May 2021 @ 1415 --- Graham Steaming and gurgling at depth but did not erupt.
17188 26 May 2021 @ 1101 --- bbev full and overflowing. Draining at 1105
16390 10 Oct 2020 @ 1225 --- steve Full and overflowing but not erupting. Drained 1258
15463 08 Aug 2020 @ 0915 08 Aug 2020 @ 0950 LynnS Spasm did not erupt during this time.
15121 29 Jul 2020 @ 0700 --- LynnS Not in eruption, crater empty
14824 01 Jul 2020 @ 0608 --- Graham Just ended eruption, full and just dropping below overflow. Clepsydra side vent is splashy.
14721 24 Jun 2020 @ 0700 --- LynnS Not in eruption
14662 18 Jun 2020 @ 0705 --- LynnS Crater is empty
13223 13 Aug 2019 @ 1913 --- Tara Draining.
12881 31 Jul 2019 @ 0703 --- rbwhitaker No water visible
11846 16 Jun 2019 @ 1715 16 Jun 2019 @ 1905 LynnS Break in data collection
11841 16 Jun 2019 @ 1420 16 Jun 2019 @ 1620 LynnS Break in data collection
11215 11 May 2019 @ 1200 --- Tara Empty.
10998 19 Apr 2019 @ 1420 --- Maureen Spasm overflowing and very blue, small boil on right pool.
10641 21 Oct 2018 @ 0824 --- rbwhitaker Drained
8671 13 Jun 2018 @ 1609 --- JSJ Pool already full & roiling at 1609. Already in overflow - runoff was filling Jelly Geyser's basin. Spasm Geyser's crater was already empty at 1646.
8267 22 May 2018 @ 1701 22 May 2018 @ 1745 jazzknick Filling. Murky water. 10 inches below overflow to start of overflow at 1714. Boiling to 2 feet. Continues to 1745 and then during Fountain play.
5390 25 Aug 2017 @ 0730 25 Aug 2017 @ 1035 Brian Spasm seen in overflow from at least 0730 until FTN, did slow drain after that, empty at 1012
4246 06 Jun 2017 @ 2000 06 Jun 2017 @ 2154 LynnS Spasm was dry the entire time.
3413 02 Aug 2016 @ 1715 02 Aug 2016 @ 1724 JSJ Full and roiling at 1715. Already overflowing into Jelly Geyser (includes Fountain's runoff) at 1724.
3026 09 Jun 2016 @ 1750 09 Jun 2016 @ 1811 JSJ Spasm already full and roiling at 1750. Basin already empty at 1811.
2035 06 Aug 2015 @ 1747 06 Aug 2015 @ 1918 JSJ Noticed at 1747 that Spasm Geyser's basin was nearly full, with 2 roils. Overflow at 1839. Overflow reached hole next to Jelly Geyser at 1843. Hole filled with water relatively quickly, with overflow at 1847. That overflow reached Jelly Geyser's basin at 1849.
228 17 Jul 1972 @ 1628 --- BoekelUpload 1628murky H2O
229 17 Jul 1972 @ 1628 --- BoekelUpload 1628murky H2O
EntrySourceLinkComment
07 Jul 2016 @ 1456 JSJ https://www.youtube.com/watch?v=nart9YM7O9I#t=7m57s Clips 36-53 of this video compilation (time stamp 7:57 to the end) show Spasm Geyser erupting during the mid-afternoon of 7 July 2016.
13 Aug 2015 @ 1800 JSJ https://www.youtube.com/watch?v=nart9YM7O9I#t=3m53s Clips 17-35 of this video compilation (time stamp 3:53 to 7:56) show Spasm Geyser erupting during the early evening of 13 August 2015.
05 Aug 2013 @ 0901 JSJ https://www.youtube.com/watch?v=nart9YM7O9I Clips 1-4 of this video compilation (beginning to time stamp 0:47) show Spasm Geyser erupting during the mid-morning of 5 August 2013.
Baseline does not exist.