Last Known Eruption
15d 13h 2m ago

Latest Eruptions

Eruption DurationInterval
05 Sep 2020 @ 2015:482h 17m 44s
05 Sep 2020 @ 1758:0423h 8m 42s
04 Sep 2020 @ 1849:229d 3h 52m
26 Aug 2020 @ 14572d 22h 18m
23 Aug 2020 @ 1638:1427m 4s 7h 35m
23 Aug 2020 @ 090311h 9m
22 Aug 2020 @ 2153:106h 1m
22 Aug 2020 @ 15525h 58m
22 Aug 2020 @ 09542h 7m
22 Aug 2020 @ 0746:0226m 26s 12h 14m 35s
21 Aug 2020 @ 1931:2725m 14s 5h 25m 37s
21 Aug 2020 @ 1405:5028m 14s 6h 37m 48s
21 Aug 2020 @ 0728:029m 0s 19h 56m
20 Aug 2020 @ 1132 ie1d 1h 21m
19 Aug 2020 @ 101119h 14m
18 Aug 2020 @ 14571d 7h 18m
17 Aug 2020 @ 0738:3014h 5m 49s
16 Aug 2020 @ 1732:4124m 55s 6h 5m 22s
16 Aug 2020 @ 1127:1925m 49s 18h 46m 59s
15 Aug 2020 @ 1640:20 ns4h 59m 28s
15 Aug 2020 @ 1140:522h 13m 10s
15 Aug 2020 @ 0927:4225m 52s 1d 13h 53m 28s
13 Aug 2020 @ 1934:14 ie4h 58m 5s
13 Aug 2020 @ 1436:0927m 21s 22h 3m 12s
12 Aug 2020 @ 1632:57 ie12h 49m 44s
12 Aug 2020 @ 0343:1311h 5m
11 Aug 2020 @ 1638 ie20h 24m
10 Aug 2020 @ 2013:161h 43m
10 Aug 2020 @ 1830 ie wc2d 19m
08 Aug 2020 @ 1811 ie wc1d 1h 15m
07 Aug 2020 @ 1655:027h 34m 25s
07 Aug 2020 @ 0920:3725m 35s 14h 33m
06 Aug 2020 @ 1847 ie wc3h 58m
06 Aug 2020 @ 1449~8m 2h 13m
06 Aug 2020 @ 1236 ie4h 13m
06 Aug 2020 @ 08231d 20h 10m
04 Aug 2020 @ 1212:01 ie4h 37m 25s
04 Aug 2020 @ 0734:3614h 37m 34s
03 Aug 2020 @ 1657:0226m 32s 17h 0m 22s
02 Aug 2020 @ 2356:406h 3m 52s
02 Aug 2020 @ 1752:486m 6s 7h 5m 3s
02 Aug 2020 @ 1047:4525m 35s 23h 36m 31s
01 Aug 2020 @ 1111:146m 6s 11h 43m 13s
31 Jul 2020 @ 2328:012h 7m
31 Jul 2020 @ 2121 ie13h 20m
31 Jul 2020 @ 0801 ? ie wc4d 12h 32m
26 Jul 2020 @ 1929 ns2d 10h 51m
24 Jul 2020 @ 0838 ie13h 41m
23 Jul 2020 @ 1857 ie wc5h 53m
23 Jul 2020 @ 13042d 17h 7m
20 Jul 2020 @ 1957 ie wc4h 30m
20 Jul 2020 @ 15271d 3h 24m
19 Jul 2020 @ 120312m 16h 40m
18 Jul 2020 @ 1923 ie wc5h 16m
18 Jul 2020 @ 1407 ie wc17h 27m
17 Jul 2020 @ 20407h 6m
17 Jul 2020 @ 1334 ie4h 33m
17 Jul 2020 @ 0901 ie3d 13h 11m
13 Jul 2020 @ 1950 ie wc5h 47m
13 Jul 2020 @ 1403 ie wc1d 6h 19m
12 Jul 2020 @ 074414h 48m
11 Jul 2020 @ 1656 ie9h 50m
11 Jul 2020 @ 0706 ie2d 11h 47m
08 Jul 2020 @ 1919 ie wc1d 21m
07 Jul 2020 @ 1858 ie2h 25m
07 Jul 2020 @ 1633 ie22h 12m
06 Jul 2020 @ 1820:3325m 18s 6h 14m 49s
06 Jul 2020 @ 1205:4412h 8m 2s
05 Jul 2020 @ 2357:4227m 25s 5h 27m 22s
05 Jul 2020 @ 1830:2028m 0s 5h 42m 12s
05 Jul 2020 @ 1248:082h 14m 12s
05 Jul 2020 @ 1033:5626m 56s 23h 0m 36s
04 Jul 2020 @ 1133:2026m 6s 12h 58m
03 Jul 2020 @ 2235 ie7h 40m
03 Jul 2020 @ 14551h 53m
03 Jul 2020 @ 1302 ie wc5h 46m
03 Jul 2020 @ 0716 ie12h 49m
02 Jul 2020 @ 1826:545h 11m 23s
02 Jul 2020 @ 1315:312h 20m 57s
02 Jul 2020 @ 1054:34 ie23h 13m
01 Jul 2020 @ 1141 ie19h 31m
30 Jun 2020 @ 1610 ns23h 49m
29 Jun 2020 @ 1620:562h 1m
29 Jun 2020 @ 1419 ie wc5h 45m
29 Jun 2020 @ 0834 ie wc21h 50m
28 Jun 2020 @ 1044 ie wc2h 31m
28 Jun 2020 @ 0813 ie wc12h 30m
27 Jun 2020 @ 1943 ie wc6h 43m
27 Jun 2020 @ 1300 ie wc20h 18m
26 Jun 2020 @ 1641:3428m 1s 2h 10m
26 Jun 2020 @ 1431 ie wc5h 38m
26 Jun 2020 @ 0852:1213h 26m 4s
25 Jun 2020 @ 1926:081d 5h 47m
24 Jun 2020 @ 13397h 42m
24 Jun 2020 @ 0556:20 ie2d 12h 4m
21 Jun 2020 @ 1752 ie1d 1h 33m
20 Jun 2020 @ 161919h 56m
19 Jun 2020 @ 2023 ie wc7h 12m
19 Jun 2020 @ 1311 ie wc1d 32m
18 Jun 2020 @ 1239 ie wc19h 52m

Interval Statistics

Interval Count100
Min1h 43m
Max9d 3h 52m
Mean19h 14m
Median12h 22m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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
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.


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