Last Known Eruption
5y 146d 7h 12m ago

Latest Eruptions

Eruption DurationInterval
31 Jan 2014 @ 0729 wc14h 53m
30 Jan 2014 @ 1636 ie wc2y 138d 3h 40m
15 Sep 2011 @ 1356 ie wc4h 43m
15 Sep 2011 @ 0913 ie wc1h 27m
15 Sep 2011 @ 07463m 12h 17m
14 Sep 2011 @ 1929 ns wc1h 35m
14 Sep 2011 @ 17541h 31m
14 Sep 2011 @ 16231h 31m
14 Sep 2011 @ 1452 ie wc1h 31m
14 Sep 2011 @ 13211h 29m
14 Sep 2011 @ 11521h 21m
14 Sep 2011 @ 1031 ie wc1h 21m
14 Sep 2011 @ 0910 ie wc1h 21m
14 Sep 2011 @ 0749 ns wc1h 4m
14 Sep 2011 @ 06455h 39m
14 Sep 2011 @ 0106 ie4h 40m
13 Sep 2011 @ 2026 ini24m 127d 14h 21m
09 May 2011 @ 0605 ie wc13h 44m
08 May 2011 @ 1621 ie wc4h 12m
08 May 2011 @ 1209 ie1h 24m
08 May 2011 @ 1045 ie wc25m
08 May 2011 @ 1020 ie1h 20m
08 May 2011 @ 09002h 10m
08 May 2011 @ 0650 ie wc124d 12h 56m
03 Jan 2011 @ 1654 ? ie wc161d 14h 35m
26 Jul 2010 @ 0319 ini284d 15h 29m
14 Oct 2009 @ 115043m
14 Oct 2009 @ 1107 ini296d 1h 14m
22 Dec 2008 @ 0853 wc2y 150d 11h 4m
25 Jul 2006 @ 2249 ini1y 58d 8h 33m
28 May 2005 @ 1416 ini226d 20h 59m
13 Oct 2004 @ 1717 ini2y 344d 1m
04 Nov 2001 @ 1616 ini2m 59d 21h 17m
05 Sep 2001 @ 1959 ini51d 9h 15m
16 Jul 2001 @ 1044 ini2y 338d 19h 33m
12 Aug 1998 @ 15111h 33m
12 Aug 1998 @ 13386y 140d 20h 55m
25 Mar 1992 @ 15431h 27m
25 Mar 1992 @ 14163h 3m
25 Mar 1992 @ 1113~31h 8m
25 Mar 1992 @ 1005~41h 0m
25 Mar 1992 @ 09056y 282d 4h 4m
18 Jun 1985 @ 06017y 358d 19h 38m
26 Jun 1977 @ 1023 ie48d 17h 29m
08 May 1977 @ 16541h 0m
08 May 1977 @ 155478d 22h 26m
18 Feb 1977 @ 162812d 3h 57m
06 Feb 1977 @ 123119d 2h 20m
18 Jan 1977 @ 1011 ie25d 49m
24 Dec 1976 @ 092270d 15h 21m
14 Oct 1976 @ 190135d 3h 41m
09 Sep 1976 @ 152010d 21h 42m
29 Aug 1976 @ 1738 ie6h 6m
29 Aug 1976 @ 113220d 17h 32m
08 Aug 1976 @ 18002d 6h 48m
06 Aug 1976 @ 1112116d 20h 55m
11 Apr 1976 @ 131710d 1h 1m
01 Apr 1976 @ 1216104d 2h 14m
19 Dec 1975 @ 100255d 17h 25m
24 Oct 1975 @ 1737 ie14d 2h 9m
10 Oct 1975 @ 1528 ie3d 3h 4m
07 Oct 1975 @ 12244d 20h 26m
02 Oct 1975 @ 15581h 9m
02 Oct 1975 @ 14492h 4m
02 Oct 1975 @ 12451h 9m
02 Oct 1975 @ 11363d 16h 46m
28 Sep 1975 @ 1850 ie59m
28 Sep 1975 @ 1751 ie6d 3h 22m
22 Sep 1975 @ 1429 ie9d 22h 5m
12 Sep 1975 @ 16245d 10m
07 Sep 1975 @ 16141h 36m
07 Sep 1975 @ 143852m
07 Sep 1975 @ 13461h 8m
07 Sep 1975 @ 12381h 35m
07 Sep 1975 @ 1103 ini34d 16h 47m
03 Aug 1975 @ 18161h 48m
03 Aug 1975 @ 162823h 52m
02 Aug 1975 @ 163655m
02 Aug 1975 @ 15413m 26s 55m
02 Aug 1975 @ 14465h 49m
02 Aug 1975 @ 0857>10m 5d 21h 48m
27 Jul 1975 @ 110958m
27 Jul 1975 @ 10111h 17m
27 Jul 1975 @ 085457m
27 Jul 1975 @ 07571h 29m
27 Jul 1975 @ 062816d 21h 37m
10 Jul 1975 @ 085110d 20h 58m
29 Jun 1975 @ 1153to12044717m
29 Jun 1975 @ 1136to1152142h 12m
29 Jun 1975 @ 09246d 13h 2m
22 Jun 1975 @ 20224m 52s 1h 7m
22 Jun 1975 @ 19152h 2m
22 Jun 1975 @ 17131h 0m
22 Jun 1975 @ 16132h 58m
22 Jun 1975 @ 131554m
22 Jun 1975 @ 12215d 22h 31m
16 Jun 1975 @ 13501h 8m
16 Jun 1975 @ 1242 ie55m
16 Jun 1975 @ 11471h 6m
16 Jun 1975 @ 104146m

Interval Statistics

Interval Count100
Min17m
Max7y 358d 19h 38m
Mean141d 2h 8m
Median5h 11m
Initial-to-Initial
Interval Count9
Min51d 9h 15m
Max25y 318d 23h 41m
Mean4y 1d 17h 2m
Median1y 49d 17h 7m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
11454 31 May 2019 @ 1407 --- Graham Water level is higher than recent seasons, about an inch below overflow.
10360 16 Sep 2018 @ 1334 --- Siegmund Water ~20cm below overflow (little lower than I remember it being in the spring or in previous years.)
4554 27 Jul 2017 @ 0729 --- EmilyW Area around vault is wet. Might have overflowed this morning
4522 24 Jul 2017 @ 0700 --- SteveO The Northeast side Vault's vent is wet and downhill away from the vent 5 or 6 feet. Looks like it may have overflowed a bit. Vault's level is down about 3 inches below the rim.
4482 18 Jul 2017 @ 1409 --- geysergaze Water levels up two inches over the course of the Giantess boiling event
3858 05 Nov 2016 @ 1100 --- Janet White Down 4-5" and sending up bubbles on the side farthest from the boardwalk. The bubbles were seen on my past few visits, but I'd have to check photos to see if the water level has changed. If it has, it's not by much.
3189 22 Jun 2016 @ 0954 --- David semi-clear blue water about 8-10" below rim. see: https://www.flickr.com/photos/ujelang/27769711220/in/dateposted-public/
547 31 Mar 1976 @ 2115 --- BoekelUpload 2115 water level down 1/2 inch
438 10 Jul 1975 @ 0210 --- BoekelUpload 0210 down 17in
419 29 Jun 1975 @ 0855 --- BoekelUpload 0855 down 1.75in
417 29 Jun 1975 @ 0847 --- BoekelUpload 0847 down 1in
418 29 Jun 1975 @ 0838 --- BoekelUpload 0838 down .5in
420 29 Jun 1975 @ 0831 --- BoekelUpload 0831 full
409 14 May 1975 @ 1728 --- BoekelUpload 1728 15in down
410 14 May 1975 @ 1714 --- BoekelUpload 1714 11in down
408 14 May 1975 @ 1641 --- BoekelUpload 1641 3in down
411 14 May 1975 @ 1617 --- BoekelUpload 1617 full
399 29 Apr 1975 @ 0815 --- BoekelUpload 0815 filled over ledge
395 28 Apr 1975 @ 2015 --- BoekelUpload 2015 just above ledge
397 28 Apr 1975 @ 0815 --- BoekelUpload 0815 filled over ledge
394 28 Apr 1975 @ 0652 --- BoekelUpload 0652 D below ledge
339 17 Apr 1975 @ 0659 --- BoekelUpload 0659 below ledge 26m
458 16 Apr 1975 @ 0000 16 Apr 1975 @ 2359 BoekelUpload dn 1in @~20m
459 16 Apr 1975 @ 0000 16 Apr 1975 @ 2359 BoekelUpload dn 11in @ 57m
460 16 Apr 1975 @ 0000 16 Apr 1975 @ 2359 BoekelUpload dn 16in @~80-m
461 16 Apr 1975 @ 0000 16 Apr 1975 @ 2359 BoekelUpload dn 5in @~49m
332 05 Apr 1975 @ 0000 05 Apr 1975 @ 2359 BoekelUpload active
330 13 Mar 1975 @ 1200 13 Mar 1975 @ 2359 BoekelUpload active pm
328 14 Feb 1975 @ 0000 14 Feb 1975 @ 2359 BoekelUpload active
325 09 Feb 1975 @ 0000 09 Feb 1975 @ 2359 BoekelUpload active
322 20 Jan 1975 @ 0000 20 Jan 1975 @ 2359 BoekelUpload drained
321 19 Jan 1975 @ 1200 19 Jan 1975 @ 2359 BoekelUpload active pm
270 17 Jul 1973 @ 0935 --- BoekelUpload 0935;drained 15ft
218 17 Jan 1972 @ 0000 17 Jan 1972 @ 2359 BoekelUpload avg 65 m
219 17 Jan 1972 @ 0000 17 Jan 1972 @ 2359 BoekelUpload avg 65 m
No attachments for this geyser.
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