Last Known Eruption
119d 4h 28m ago

Latest Eruptions

Eruption DurationInterval
05 Nov 2023 @ 1440 ie wc4d 2h 2m
01 Nov 2023 @ 1338 ie wc1d 23h 56m
30 Oct 2023 @ 134222h 54m
29 Oct 2023 @ 1448~44m 1h 52m
29 Oct 2023 @ 1256 ie19d 21h 8m
09 Oct 2023 @ 1548 ns1d 1h 51m
08 Oct 2023 @ 13571d 5h 18m
07 Oct 2023 @ 083913h 49m
06 Oct 2023 @ 18506h 34m
06 Oct 2023 @ 121613d 19h 56m
22 Sep 2023 @ 1620 ns~29m 3h 38m
22 Sep 2023 @ 1242<10m 4d 23h 31m
17 Sep 2023 @ 1311 ie4d 21h 32m
12 Sep 2023 @ 1539 ie33d 6h 5m
10 Aug 2023 @ 0934 ie7d 44m
03 Aug 2023 @ 0850~2m 15h 57m
02 Aug 2023 @ 1653 ns18h 42m
01 Aug 2023 @ 2211:00 ie7h 15m
01 Aug 2023 @ 14567h 31m
01 Aug 2023 @ 072523h 10m
31 Jul 2023 @ 081531m 1d 1h 36m
30 Jul 2023 @ 063933m 10h 17m
29 Jul 2023 @ 20228h 17m
29 Jul 2023 @ 120523m 5h 43m
29 Jul 2023 @ 062210h 49m
28 Jul 2023 @ 19339h 48m
28 Jul 2023 @ 0945 ie21h 11m
27 Jul 2023 @ 1234 ie18h 2m
26 Jul 2023 @ 18322h 21m
26 Jul 2023 @ 1611:0024m 0s 1d 2h 28m 0s
25 Jul 2023 @ 1343:00 ie7h 8m
25 Jul 2023 @ 063528m 11h 39m
24 Jul 2023 @ 1856 ns23h 30m
23 Jul 2023 @ 1926 ns13h 20m
23 Jul 2023 @ 060615h 10m
22 Jul 2023 @ 14568h 11m
22 Jul 2023 @ 064528m 7h 1m
21 Jul 2023 @ 23442h 35m
21 Jul 2023 @ 21091h 54m
21 Jul 2023 @ 1915 ie wc1d 2h 3m
20 Jul 2023 @ 1712 ie6h 9m
20 Jul 2023 @ 110330m 1d 15h 20m
18 Jul 2023 @ 19436h 33m
18 Jul 2023 @ 131019h 21m
17 Jul 2023 @ 1749 ie4h 57m
17 Jul 2023 @ 12522h 36m
17 Jul 2023 @ 1016 ie1d 12h 37m
15 Jul 2023 @ 21395h 54m
15 Jul 2023 @ 1545 ns2h 9m
15 Jul 2023 @ 133625m 12h 55m
15 Jul 2023 @ 004113h 38m
14 Jul 2023 @ 1103 ns15h 24m
13 Jul 2023 @ 19397h 2m
13 Jul 2023 @ 123724m 2h 32m
13 Jul 2023 @ 10051d 2h 57m
12 Jul 2023 @ 07081d 11h 23m
10 Jul 2023 @ 19452d 6h 16m
08 Jul 2023 @ 132920h 18m
07 Jul 2023 @ 17111d 1h 3m
06 Jul 2023 @ 1608 ns30m 8h 3m
06 Jul 2023 @ 080525m 2h 32m
06 Jul 2023 @ 053324m 12h 44m
05 Jul 2023 @ 16497h 16m
05 Jul 2023 @ 093327m 2h 38m
05 Jul 2023 @ 065527m 1d 20h 0m
03 Jul 2023 @ 10551d 30m
02 Jul 2023 @ 10252h 18m
02 Jul 2023 @ 0807 ie17h 0m
01 Jul 2023 @ 15071d 5h 53m
30 Jun 2023 @ 091413m 2h 30m
30 Jun 2023 @ 064428m 1d 11h 54m
28 Jun 2023 @ 185031m 8h 30m
28 Jun 2023 @ 102020h 56m
27 Jun 2023 @ 13241d 16h 51m
25 Jun 2023 @ 2033 ie5h 20m
25 Jun 2023 @ 15139h 25m
25 Jun 2023 @ 05489m 14h 30m
24 Jun 2023 @ 15182s 2h 37m
24 Jun 2023 @ 12415h 48m
24 Jun 2023 @ 065330m 1d 1h 10m
23 Jun 2023 @ 054334m 9h 41m
22 Jun 2023 @ 2002 ie4h 55m
22 Jun 2023 @ 150725m 23h 22m
21 Jun 2023 @ 154536m 8h 1m
21 Jun 2023 @ 074428m 2h 7m
21 Jun 2023 @ 0537 ie22h 17m
20 Jun 2023 @ 072033m 14h 38m
19 Jun 2023 @ 164282h 12m
19 Jun 2023 @ 1430 ie2d 19m
17 Jun 2023 @ 141122h 21m
16 Jun 2023 @ 1550 ie1d 5h 25m
15 Jun 2023 @ 102521h 6m
14 Jun 2023 @ 131921h 47m
13 Jun 2023 @ 1532 ns20h 1m
12 Jun 2023 @ 1931 ie2h 39m
12 Jun 2023 @ 1652 ie3h 54m
12 Jun 2023 @ 12582h 26m
12 Jun 2023 @ 103226m 2h 44m
12 Jun 2023 @ 0748 ie1d 36m
11 Jun 2023 @ 071220h 28m

Interval Statistics

Interval Count100
Min1h 52m
Max33d 6h 5m
Mean1d 11h 34m
Median14h 9m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
29301 31 Oct 2023 @ 1515 --- mhvogel Pool empty. Had a recent eruption.
28675 07 Oct 2023 @ 1430 --- SantaFe108 Thumping loudly at depth. Zero steam or water.
27260 27 Jul 2023 @ 1239 --- JimS Ended
27241 26 Jul 2023 @ 1345 --- Brian arrived to see last couple of splashes from eruption
26701 27 Jun 2023 @ 1406 --- Graham Quit now. d=42m. Quit 12m after Rift started.
26664 25 Jun 2023 @ 1523 --- Graham Quit now.
26555 21 Jun 2023 @ 0548 --- JimS Ended
26291 13 Jun 2023 @ 1555 --- Graham Quit now
26262 12 Jun 2023 @ 0814 --- JimS Quiet
26199 09 Jun 2023 @ 2111 --- K.Cooper Amazing thumps after Grand, no actual splashes
26149 08 Jun 2023 @ 0802 --- JimS Ended
25699 22 May 2023 @ 1454 --- SantaFe108 Completely empty.
25593 20 May 2023 @ 1700 --- SantaFe108 VERY strong eruption attempt, Splashing, bouncing, flaming, and heavy overflow!
25588 20 May 2023 @ 1510 --- SantaFe108 Just reached overflow.
25545 19 May 2023 @ 0852 --- Graham Lots of thumps, small splashes, and flood for 3m. Didn't start.
25496 17 May 2023 @ 1218 --- Graham Strong push with 2 small splashes during Grand, but failed to erupt.
25435 14 May 2023 @ 1730 --- SantaFe108 Completely drained.
25378 06 May 2023 @ 1730 --- SantaFe108 Behaving like an intermittent spring, cycling between weak and heavy overflow. Brown-orange bacteria growth covers the entire pool.
25282 30 Apr 2023 @ 1240 --- SantaFe108 Cycling light and heavy overflow. Orange to brownish-orange bacteria around the vent.
24817 01 Jan 2023 @ 1347 --- mhreed Overflow in progress. Dropped 1351.
24579 30 Oct 2022 @ 1730 --- SantaFe108 Overflowing heavily since Grand erupted.
24561 30 Oct 2022 @ 1624 30 Oct 2022 @ 1700 SantaFe108 Cycling between overflowing and not overflowing every ~5 minutes.
23529 01 Sep 2022 @ 1533 --- DinosaursArentReal big drop at 1533 with no sputnik D fill
23528 01 Sep 2022 @ 1509 --- DinosaursArentReal abrupt drop in WT level with no corresponding sputnik fill
23468 28 Aug 2022 @ 1833 --- annelies8 Overflowing more than I've ever seen, for all of Grand's eruption and continued after Update: draining at 18:37
23366 23 Aug 2022 @ 1511 --- S.Glasser overflowing, good thumps, about ~1min of blurps, minimal burst action.
22995 02 Aug 2022 @ 1426 --- Ben VL A second eruption began following Grand. D=5m. Putting in as a note because both of Jim's posts merged.
22993 02 Aug 2022 @ 1342 --- JimS Ended
22188 28 Jun 2022 @ 2213 --- K.Cooper thumping and small splash, no eruption
21378 20 May 2022 @ 0845 --- Graham Just below overflow. 0908 recently went into overflow. 0926 below overflow.
21229 10 May 2022 @ 2036 --- Ajw pool is full with strong overflow, but no eruptions.
21224 09 May 2022 @ 1705 --- Ajw Pool full, but no eruption, light overflow.
20937 02 Apr 2022 @ 1005 --- Mkeller Slimy and orange. About a foot below overflow but looks like it is cycling up and down.
20676 12 Jan 2022 @ 0753 --- Graham Had come up to overflow.
20670 11 Jan 2022 @ 1408 --- Graham In overflow.
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
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.