Last Known Eruption
1y 60d 3h 17m ago

Latest Eruptions

Eruption DurationInterval
22 Sep 2018 @ 225321d 5h 48m
01 Sep 2018 @ 1705119d 23h 48m
04 May 2018 @ 1717~3m 6m
04 May 2018 @ 17111m 15s 9d 21h 24m
24 Apr 2018 @ 19477m
24 Apr 2018 @ 19403m 291d 4h 10m
07 Jul 2017 @ 1530 ie9y 141d 5h 1m
19 Feb 2008 @ 092951d 48m
30 Dec 2007 @ 084153d 15h 38m
06 Nov 2007 @ 1703 ie10d 18h 18m
26 Oct 2007 @ 234510d 10h 23m
16 Oct 2007 @ 132217d 13h 42m
28 Sep 2007 @ 2340 ns20d 8h 10m
08 Sep 2007 @ 153035d 10h 52m
04 Aug 2007 @ 04386d 20h 53m
28 Jul 2007 @ 07459d 23h 40m
18 Jul 2007 @ 080519d 19h 34m
28 Jun 2007 @ 12317d 22h 21m
20 Jun 2007 @ 141020d 4h 34m
31 May 2007 @ 093611d 21h 30m
19 May 2007 @ 120617d 16h 56m
01 May 2007 @ 191049d 4h 42m
13 Mar 2007 @ 1428179d 21m
15 Sep 2006 @ 14076d 1h 27m
09 Sep 2006 @ 124041d 10h 3m
30 Jul 2006 @ 02376d 13h 19m
23 Jul 2006 @ 13185m
23 Jul 2006 @ 131346d 19h 49m
06 Jun 2006 @ 172423d 9h 21m
14 May 2006 @ 0803~1m 7d 9h 46m
06 May 2006 @ 2217~3m 6d 9m
30 Apr 2006 @ 22085m
30 Apr 2006 @ 220330-40 seconds1d 5h 36m
29 Apr 2006 @ 162720s 6d 4h 56m
23 Apr 2006 @ 1131~2m 18h 18m
22 Apr 2006 @ 1713~1m 30s 104d 21h 18m
07 Jan 2006 @ 1855154d 11h 8m
06 Aug 2005 @ 0847313d 10h 14m
26 Sep 2004 @ 2233119d 9h 13m
30 May 2004 @ 13202y 213d 21h 39m
29 Oct 2001 @ 1441109d 20h 25m
11 Jul 2001 @ 19166y 287d 6h 26m
29 Sep 1994 @ 1250159d 16h 27m
22 Apr 1994 @ 2023 min2y 91d 7h 43m
22 Jan 1992 @ 114019y 179d 4h 10m
31 Jul 1972 @ 0830

Interval Statistics

Interval Count45
Min5m
Max19y 179d 4h 10m
Mean1y 9d 13h 7m
Median20d 8h 10m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
13838 01 Oct 2019 @ 0920 01 Oct 2019 @ 0950 aferrara Water surging up and over Mastiff's depression, sometimes making it ~1' and splashing over the platform before dropping. Bijou on and strong throughout.
13400 25 Aug 2019 @ 1527 --- EmilyW Bijou on strong, seems that mastiff depth charges about 1-3’ above its depression in the platform occasionally
11136 29 Apr 2019 @ 1438 29 Apr 2019 @ 1445 Polly Depth charging
8136 10 May 2018 @ 0900 10 May 2018 @ 0915 Polly Mastiff almost continuously depth charging from the front vent 1-2 feet high with s couple of taller bursts. At 0911 Mastiff bursting increased but NO bathtub, then Bijou went to steam.
8033 28 Apr 2018 @ 0620 28 Apr 2018 @ 0922 Micah Kipple Still continuing its constant bursting and splashing from the front vent reaching 5-10 feet. Even during bathtubs.
7896 29 Jan 2018 @ 1350 --- Graham Mastiff depth charging when I arrived and throughout observation. Some splashes were accompanied with a "pop". 3' above the rim at times. Right vent sometimes sent a thick fan of water angled left to right rather than the more common smaller left right splashes. Two bathtubs during this time and I left after the second one with Mastiff still depth charging.
7050 23 Sep 2017 @ 1622 23 Sep 2017 @ 1634 Polly Numerous depth charges in Mastiff after the Bijou pause. Best I've seen this month.
2275 06 Sep 2015 @ 1524 --- BobInSLC water came up, footbath
2277 06 Sep 2015 @ 1227 --- Suzanne Bathtub followed by visible water in Emerald. Emerald was bubbling a couple of inches. Emerald seen bubbling again at approximately 1236.
No attachments for this geyser.
BaselineDistance (ft)Description
Cage 130South side of the jugwalk on the tee toward the Giant viewing platform


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