Last Known Eruption
1d 6h 0m ago

Latest Eruptions

Eruption DurationInterval
24 Oct 2021 @ 091712d 19h 6m
11 Oct 2021 @ 14113d 20h 30m
07 Oct 2021 @ 17416h 36m
07 Oct 2021 @ 110520h 10m
06 Oct 2021 @ 1455 ns6d 27m
30 Sep 2021 @ 14286m 21h 3m
29 Sep 2021 @ 17251d 9h 38m
28 Sep 2021 @ 0747 ie1d 18h 20m
26 Sep 2021 @ 1327<13m 1d 2h 56m
25 Sep 2021 @ 1031 ie1d 17h 9m
23 Sep 2021 @ 17227h 43m
23 Sep 2021 @ 0939 ie1d 2h 12m
22 Sep 2021 @ 0727 ie19h 32m
21 Sep 2021 @ 1155 ie2d 22h 12m
18 Sep 2021 @ 1343 ie17h 49m
17 Sep 2021 @ 1954 ie1d 4h 6m
16 Sep 2021 @ 1548 ie6h 7m
16 Sep 2021 @ 0941 ie1d 14h 37m
14 Sep 2021 @ 1904 ie5h 39m
14 Sep 2021 @ 132512h 56m
14 Sep 2021 @ 0029 ie5h 59m
13 Sep 2021 @ 18301d 31m
12 Sep 2021 @ 17591d 2h 40m
11 Sep 2021 @ 1519 ie wc19h 5m
10 Sep 2021 @ 20146h 26m
10 Sep 2021 @ 13481d 1h 2m
09 Sep 2021 @ 12461d 21h 22m
07 Sep 2021 @ 1524 ie7h 40m
07 Sep 2021 @ 07443d 12h 17m
03 Sep 2021 @ 19271d 3h 53m
02 Sep 2021 @ 1534 ie1d 7h 4m
01 Sep 2021 @ 0830 ns18h 51m
31 Aug 2021 @ 133926m 53s 18h 50m
30 Aug 2021 @ 184931m 2h 57m
30 Aug 2021 @ 1552 ie1d 1h 49m
29 Aug 2021 @ 14031d 7h 27m
28 Aug 2021 @ 0635:3713h 1m
27 Aug 2021 @ 173425m 1d 3h 9m
26 Aug 2021 @ 14254h 13m
26 Aug 2021 @ 10121d 2h 34m
25 Aug 2021 @ 0737:4829m 1d 5m
24 Aug 2021 @ 073210d 1h 33m
14 Aug 2021 @ 0558:451d 14h 22m
12 Aug 2021 @ 1536 ie6h 20m
12 Aug 2021 @ 09161d 19h 54m
10 Aug 2021 @ 1321:581d 23h 2m
08 Aug 2021 @ 141918h 14m
07 Aug 2021 @ 200531m 1d 7h 35m
06 Aug 2021 @ 123019h 29m
05 Aug 2021 @ 1700:365h 39m 51s
05 Aug 2021 @ 1120:452d 3h 35m 44s
03 Aug 2021 @ 0745:0117h 47m
02 Aug 2021 @ 135828m 1d 3h 44m
01 Aug 2021 @ 1014 ie15h 53m
31 Jul 2021 @ 1821 ie8h 43m
31 Jul 2021 @ 09381d 3h 42m
30 Jul 2021 @ 055623h 4m
29 Jul 2021 @ 06521d 12h 44m
27 Jul 2021 @ 1808 ie7h 28m
27 Jul 2021 @ 1040 ie1d 19h 21m
25 Jul 2021 @ 151921h 41m
24 Jul 2021 @ 1738 ie1d 5h 14m
23 Jul 2021 @ 122419h 27m
22 Jul 2021 @ 16571d 3h 29m
21 Jul 2021 @ 13285h 53m
21 Jul 2021 @ 073510h 22m
20 Jul 2021 @ 2113 ie12h 12m
20 Jul 2021 @ 09012h 39m
20 Jul 2021 @ 062234m 17h 48m
19 Jul 2021 @ 12341d 6h 5m
18 Jul 2021 @ 06291d 9h 47m
16 Jul 2021 @ 2042 ie1d 4h 34m
15 Jul 2021 @ 1608 ie9h 19m
15 Jul 2021 @ 064920h 41m
14 Jul 2021 @ 1008 ie2d 9m
12 Jul 2021 @ 09592h 21m
12 Jul 2021 @ 0738 ie10h 49m
11 Jul 2021 @ 204913h 5m
11 Jul 2021 @ 074414h 23m
10 Jul 2021 @ 172110h 19m
10 Jul 2021 @ 07023d 0m
07 Jul 2021 @ 07027m 1d 15h 11m
05 Jul 2021 @ 15512d 6h 42m
03 Jul 2021 @ 09092h 30m
03 Jul 2021 @ 0639 ie12h 34m
02 Jul 2021 @ 1805 ie6h 37m
02 Jul 2021 @ 1128 ie17h 28m
01 Jul 2021 @ 1800 ie2h 27m
01 Jul 2021 @ 1533 ie3h 54m
01 Jul 2021 @ 11391d 3h 46m
30 Jun 2021 @ 0753 ie wc12h 11m
29 Jun 2021 @ 1942 ie1d 8h 17m
28 Jun 2021 @ 1125 ie3h 58m
28 Jun 2021 @ 07271d 18h 38m
26 Jun 2021 @ 12491h 59m
26 Jun 2021 @ 105023h 56m
25 Jun 2021 @ 10542h 22m
25 Jun 2021 @ 0832 ie10h 10m
24 Jun 2021 @ 2222 ns1d 10h 20m
23 Jun 2021 @ 1202 ie17h 12m

Interval Statistics

Interval Count100
Min1h 59m
Max12d 19h 6m
Mean1d 5h 39m
Median20h 52m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
19516 12 Sep 2021 @ 1828 --- Suzanne eruption ended
19123 28 Aug 2021 @ 0707 --- JimS Ended during Grand eruption.
19072 26 Aug 2021 @ 1038 --- Graham Off between 1036 and 1038. No Rift.
18063 23 Jun 2021 @ 1508 23 Jun 2021 @ 1511 ldgordon Thumping with small slashing at 1509
17408 03 Jun 2021 @ 1544 --- steve West Triplet went into overflow with gentle convection over the vent but no eruption yet.
17309 31 May 2021 @ 1525 --- Bhoffer In heavy overflow.
17036 09 May 2021 @ 1814 --- Ajw Strong thumping and water surges with each thump
16004 06 Sep 2020 @ 1818 --- Graham In overflow but not erupting.
15418 06 Aug 2020 @ 1617 06 Aug 2020 @ 1714 JSJ Water level rising, then falling at 1617 to 1618. Ditto at 1622 to 1623 & 1640 to 1641 & 1649 to 1650 & 1711 to 1714. Delta Geyser erupts in response to West Triplet water level rises.
14182 12 Apr 2020 @ 1200 08 May 2020 @ 1850 mhvogel Currently in overflow. It has lost its deep blue color and has cooled. It now has light brown Cyanobacteria lining the walls. I haven’t witnessed any eruptions since January.
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 --- mhreed 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
16751 17 Oct 1998 @ 1344 --- JarnoO surging and thumps
16749 16 Oct 1998 @ 0919 --- JarnoO thumps and surges
16743 09 Oct 1998 @ 1410 --- JarnoO thumps and surges
16727 24 Sep 1998 @ 1043 --- JarnoO thumps and surges
16724 23 Sep 1998 @ 0937 --- JarnoO overflow
16666 08 Jun 1998 @ 0000 08 Jun 1998 @ 2359 JarnoO variable trickle oflow to 2-3" below oflow
14420 27 Oct 1995 @ 1547 --- JarnoO just drained
14407 15 Oct 1995 @ 0715 --- JarnoO end ~0715
14363 23 Aug 1995 @ 0531 --- JarnoO inactive and drained at 0531
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.