Last Known Eruption
18h 22m ago

Latest Eruptions

Eruption DurationInterval
14 Nov 2019 @ 14315h 59m
14 Nov 2019 @ 08321d 56m
13 Nov 2019 @ 073621h 15m
12 Nov 2019 @ 10214h 2m
12 Nov 2019 @ 06193d 15h 24m
08 Nov 2019 @ 14556d 9m
02 Nov 2019 @ 15462d 2h 46m
31 Oct 2019 @ 1300166d 19h 24m
24 Oct 2019 @ 1736 ie9d 8h 33m
15 Oct 2019 @ 0903 ie16h 59m
14 Oct 2019 @ 1604 ie wc2d 3h 4m
12 Oct 2019 @ 1300 ie22d 2h 34m
20 Sep 2019 @ 1026 ie22h 52m
19 Sep 2019 @ 1134 ie16h 37m
18 Sep 2019 @ 1857 ie wc1d 1h 22m
17 Sep 2019 @ 1734:1428m 0s 6d 9h 28m
11 Sep 2019 @ 0806 ie18h 16m
10 Sep 2019 @ 1350 ie23d 1h 53m
18 Aug 2019 @ 115718h 53m
17 Aug 2019 @ 17041d 1h 7m
16 Aug 2019 @ 15575h 52m
16 Aug 2019 @ 1005 ns19h 23m
15 Aug 2019 @ 1442 ie1d 6h 33m
14 Aug 2019 @ 0809 ie10h 33m
13 Aug 2019 @ 2136 ie2h 16m
13 Aug 2019 @ 1920 ie wc4h 57m
13 Aug 2019 @ 1423 ns>17m 19h 57m
12 Aug 2019 @ 1826d = or < 14m1d 20h 38m
10 Aug 2019 @ 21481d 3h 25m
09 Aug 2019 @ 18236h 50m
09 Aug 2019 @ 113316m 21h 8m
08 Aug 2019 @ 14254h 0m
08 Aug 2019 @ 1025 ie1d 19h 52m
06 Aug 2019 @ 143316h 10m
05 Aug 2019 @ 222311h 11m
05 Aug 2019 @ 111211m 2h 16m
05 Aug 2019 @ 0856 ie18h 1m
04 Aug 2019 @ 14551d 6h 46m
03 Aug 2019 @ 08091d 7m
02 Aug 2019 @ 080219h 13m
01 Aug 2019 @ 1249 ie1d 2h 54m
31 Jul 2019 @ 095517h 22m
30 Jul 2019 @ 1633 ie8d 6h 22m
22 Jul 2019 @ 101118h 37m
21 Jul 2019 @ 153421h 15m
20 Jul 2019 @ 1819 ie wc4h 4m
20 Jul 2019 @ 141519h 48m
19 Jul 2019 @ 1827 ie wc10h 31m
19 Jul 2019 @ 07561h 57m
19 Jul 2019 @ 0559 ie18h 1m
18 Jul 2019 @ 11583d 2h 41m
15 Jul 2019 @ 0917 ie1d 13h 29m
13 Jul 2019 @ 1948 ie wc1d 13m
12 Jul 2019 @ 19357h 19m
12 Jul 2019 @ 1216 ie23h 21m
11 Jul 2019 @ 12551h 55m
11 Jul 2019 @ 110012h 16m
10 Jul 2019 @ 224413h 16m
10 Jul 2019 @ 092828m 11h 10m
09 Jul 2019 @ 221813h 41m
09 Jul 2019 @ 0837 ie1d 12h 30m
07 Jul 2019 @ 200712h 35m
07 Jul 2019 @ 0732 ie16h 42m
06 Jul 2019 @ 14502h 37m
06 Jul 2019 @ 12133h 32m
06 Jul 2019 @ 0841 ns14h 2m
05 Jul 2019 @ 18395h 24m
05 Jul 2019 @ 1315 ie19h 16m
04 Jul 2019 @ 17596h 36m
04 Jul 2019 @ 112319h 18m
03 Jul 2019 @ 16056h 29m
03 Jul 2019 @ 093631m 20h 13m
02 Jul 2019 @ 1323 ie wc1d 3h 51m
01 Jul 2019 @ 093220h 47m
30 Jun 2019 @ 1245 ie16h 12m
29 Jun 2019 @ 2033 ie2d 21h 45m
26 Jun 2019 @ 224814h 39m
26 Jun 2019 @ 0809 ie1d 12h 43m
24 Jun 2019 @ 1926 ie wc22h 59m
23 Jun 2019 @ 20271d 54m
22 Jun 2019 @ 1933 ns5h 31m
22 Jun 2019 @ 14026m 21h 31m
21 Jun 2019 @ 16316h 1m
21 Jun 2019 @ 1030 ie2d 45m
19 Jun 2019 @ 0945 ie12h 16m
18 Jun 2019 @ 2129 ie23h 9m
17 Jun 2019 @ 22206h 5m
17 Jun 2019 @ 1615 ns1d 19h 47m
15 Jun 2019 @ 2028 ie3h 40m
15 Jun 2019 @ 1648 ie19h 33m
14 Jun 2019 @ 2115 ie9h 15m
14 Jun 2019 @ 12001h 43m
14 Jun 2019 @ 101717h 35m
13 Jun 2019 @ 1642 ie1d 3h 5m
12 Jun 2019 @ 1337 ie wc5h 11m
12 Jun 2019 @ 0826 ie9h 47m
11 Jun 2019 @ 22398h 39m
11 Jun 2019 @ 1400 ie16h 8m
10 Jun 2019 @ 215210m 2h 18m
10 Jun 2019 @ 193427m 4h 24m

Interval Statistics

Interval Count100
Min1h 43m
Max23d 1h 53m
Mean1d 13h 41m
Median18h 26m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
13782 22 Sep 2019 @ 2003 22 Sep 2019 @ 2005 William overflowed and dropped to 1/2 crater
12902 31 Jul 2019 @ 1715 31 Jul 2019 @ 1816 rbwhitaker Have not observed any water in West Triplet while waiting for Grand. Most eruptions this year have come with water in West Triplet.
12562 22 Jul 2019 @ 2233 --- William overflowed but did not erupt. Sputnik bubbling in unison with start of overflow but did not stay in eruption.
11301 12 May 2019 @ 2006 --- Siegmund In overflow 2000. Thumps 2006 to 2011, no eruption.
11300 12 May 2019 @ 1509 --- Siegmund Overlow 1429-1435, 1441, 1500. Thumps 1509, small splashes 1512 to 1514, drop 1514. No full eruption.
11299 11 May 2019 @ 2328 --- Siegmund Thumps 2328-2332. No eruption.
11298 11 May 2019 @ 1718 11 May 2019 @ 1756 Siegmund In overflow 1718, dropped 1719. In overflow again 1725. -3cm at 1731. Started overflow at 1734, dropped 1739. Resumed overflow 1744. Thumped 1750 to 1755, dropped 1756.
11198 10 May 2019 @ 0932 --- udo Overflow went from light to heavy following Grand.
11153 03 May 2019 @ 1334 --- Tara Overflowing, tea colored water
11094 27 Apr 2019 @ 0813 --- Micah Kipple Orangy brown. May be in spring sleep mode
10997 19 Apr 2019 @ 1548 --- udo Started overflowing sometime during or after Grand eruption. Tea colored (springtime) colored water.
10706 03 Nov 2018 @ 1150 --- udo Overflowing strongly and clear.
10634 20 Oct 2018 @ 1257 20 Oct 2018 @ 1344 rbwhitaker In heavy overflow and has been for several minutes since I showed up. Some convection over the vent. By 1302, it had dropped below overflow. Back in light overflow at 1306. Back below overflow at 1312. Overflow again at 1317. Still in light overflow since grand started at 1319. Runoff is heavy again at 1327. Never stopped overflowing when it got weaker. Middle of pool is surging up and down at 1329. Bubbling as well. It seemed to be slowly building as grand was erupting. Grand has now stopped. Still pulsing and gently boiling with good overflow at 1336. Pulsing and boiling rather suddenly stopped at 1338. Still in very light overflow at 1344.
9375 01 Aug 2018 @ 1927 --- JSJ Full pool & in moderately heavy overflow, with roiling. No roiling at 1929.
9084 09 Jul 2018 @ 1647 --- bhoppe Eruption done.
8084 06 May 2018 @ 0528 --- JimS Empty.
8046 29 Apr 2018 @ 2345 --- Micah Kipple Stuck in intermittent overflow.
8036 28 Apr 2018 @ 1213 --- udo Overflow restarted during latter part of Grand eruption.
8021 28 Apr 2018 @ 0617 --- Micah Kipple West triplet is drained and dry. Lightly steaming. This may be a result of the FIVE plus hour Rift Eruption that occurred last night that I haven't entered yet.
8018 27 Apr 2018 @ 1533 27 Apr 2018 @ 1538 billwarnock strong overflow of hot brownish water and bubbles
8003 26 Apr 2018 @ 0808 --- Micah Kipple Orangy brown and stuck in intermittent overflow
7943 15 Feb 2018 @ 1242 --- WillBoekel stuck in intermittent light overflow
7879 27 Jan 2018 @ 1400 --- Graham West Triplet was full of water, fluctuating in and out of overflow for a couple of hours and didn't erupt.
7793 28 Oct 2017 @ 1523 --- udo Overflowing.
7778 26 Oct 2017 @ 1430 --- udo Overflowing clear water intermittently. Mostly on with pauses.
7734 23 Oct 2017 @ 1330 --- udo Overflowing, not erupting. Stopped at 1332. Restarted approx 1338.
6366 14 Sep 2017 @ 0706 14 Sep 2017 @ 0727 JimS Just dropped below overflow as I arrived, then slowly refilled and started overflowing again at 0714. Dropped below overflow again by 0718. Resumed overflow at 0727.
4518 23 Jul 2017 @ 1450 --- sfavor off shortly after rift started
4037 03 May 2017 @ 1755 --- Archer Entered strong overflow with Grand.
4032 03 May 2017 @ 0512 --- JimS Overflowing but not erupting at 0512.
4029 02 May 2017 @ 1100 --- JimS Overflowing but not erupting
3999 23 Apr 2017 @ 1010 --- Janet Jones Part full of 'green tea' colored water.
3983 21 Apr 2017 @ 1315 --- Micah Kipple Thumps with boiling
3468 11 Aug 2016 @ 1557 11 Aug 2016 @ 1626 JSJ Subterranean eruptive thumping and gurgling at 1557-onward, with steaming, but no visible water. Still going at 1603. Quiet/done at 1608 (coinciding with Vent & Turban & Percolator all finishing up). Renewed subterranean eruptive thumping and gurgling at 1611. Visible spray at 1613. Out-of-vent splashing (no visible pool) at 1614. Activity continuing to 1623. Getting quiet at 1625 to 1626.
2137 16 Aug 2015 @ 1418 16 Aug 2015 @ 1446 JSJ Low pool splashing at 1418-1419 & 1422-1423 & 1446. Pool's water level not visible from boardwalk.
1820 30 Jun 2015 @ 0957 --- WillBoekel had a false start 2 splash and then quit.
1814 28 Jun 2015 @ 2125 --- SteveO burst for 30 seconds and drain.
1055 27 Apr 2014 @ 0000 27 Apr 2014 @ 2359 udo runoff is hot and clear but water in vent is rust colored.
1799 26 Apr 2014 @ 1116 --- LynnS West Triplet was in overflow
1051 26 Apr 2014 @ 0635 --- WillBoekel Sitting at a full and slightly overflowing water level and has a small amount of bacteria growing in it at 0635
870 05 Sep 2013 @ 2214 --- Micah Kipple post eruptive at 2214
982 20 Jul 2008 @ 0913 --- BoekelUpload end 9:13 or 9:14
1415 07 May 2007 @ 1110 07 May 2007 @ 1120 BoekelUpload between 11:10 and 11:20
12705 03 Aug 1994 @ 0000 03 Aug 1994 @ 2359 JarnoO {mentioned but not time given}
12297 18 Aug 1993 @ 0555 --- JarnoO end ~0555
12218 06 Jun 1993 @ 2100 06 Jun 1993 @ 2159 JarnoO 21:xx; d=~34
5506 06 Aug 1992 @ 0000 06 Aug 1992 @ 2359 JarnoO before Rift
5225 23 May 1992 @ 0715 --- JarnoO marks replaced 0715
4923 21 Jan 1992 @ 0000 21 Jan 1992 @ 2359 JarnoO slight overflow; [no time given]
441 17 Jul 1975 @ 0000 17 Jul 1975 @ 2359 BoekelUpload after Grand erupted
EntrySourceLinkComment
03 Aug 2018 @ 1258 JSJ https://www.youtube.com/watch?v=O6KykW5TWQM#t=2m04s Clips 7 to 11 of this video compilation (time stamp 2:04 to the end) show West Triplet Geyser's 12:58 to 1:34 PM eruption on 3 August 2018.
03 Aug 2018 @ 0934 JSJ https://www.youtube.com/watch?v=O6KykW5TWQM Clips 1 to 6 of this video compilation (beginning to time stamp 2:03) show West Triplet Geyser's 9:34 to 9:40 AM eruption + overflow + post-eruption drain on 3 August 2018.
03 Aug 2018 @ 1258 JSJ https://www.flickr.com/photos/jsjgeology/29559486537 Photo (out of 13) of West Triplet Geyser's 12:58 to 1:34 PM eruption on 3 August 2018.
11 Aug 2016 @ 1432 JSJ https://www.flickr.com/photos/jsjgeology/30385878506 Thermal image (1 of 2) of West Triplet Geyser's 2:32 to 3:40 PM eruption on 11 August 2016.
11 Aug 2016 @ 1432 JSJ https://www.flickr.com/photos/jsjgeology/30385911576 Photo (1 of 4) of West Triplet Geyser's 2:32 to 3:40 PM eruption on 11 August 2016.
11 Aug 2016 @ 1432 JSJ https://www.youtube.com/watch?v=IKc1BTQ1iZo Time lapse video of West Triplet Geyser's 2:32 to 3:40 PM eruption on 11 August 2016.
Baseline does not exist.


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