Last Known Eruption
13d 5h 56m ago

Latest Eruptions

EruptionDurationInterval
13 May 2017 @ 2004 ie23h 51m
12 May 2017 @ 2013 ie8h 22m
12 May 2017 @ 1151 ie5d 20h 22m
06 May 2017 @ 1529 ie2d 7h 47m
04 May 2017 @ 0742 ie20h 30m
03 May 2017 @ 1112 ie23h 3m
02 May 2017 @ 1209 ie3d 53m
29 Apr 2017 @ 1116 ie61d 16h 45m
26 Feb 2017 @ 1731 ie106d 9h 21m
12 Nov 2016 @ 0809 E10h 56m
11 Nov 2016 @ 2113 E9h 54m
11 Nov 2016 @ 1119 E8h 42m
11 Nov 2016 @ 0237 E10h 54m
10 Nov 2016 @ 1543 E11h 39m
10 Nov 2016 @ 0404 E10h 14m
09 Nov 2016 @ 1750 E11h 15m
09 Nov 2016 @ 0635 E11h 27m
08 Nov 2016 @ 1908 E10h 0m
08 Nov 2016 @ 0908 E12h 12m
07 Nov 2016 @ 2056 E14h 26m
07 Nov 2016 @ 0630 E12h 59m
06 Nov 2016 @ 173113h 39m
06 Nov 2016 @ 0351 E11h 54m
05 Nov 2016 @ 165712h 33m
05 Nov 2016 @ 0423 E11h 1m
04 Nov 2016 @ 172210h 43m
04 Nov 2016 @ 0638 E11h 16m
03 Nov 2016 @ 1922 E10h 47m
03 Nov 2016 @ 0835 E11h 1m
02 Nov 2016 @ 2134 E15h 0m
02 Nov 2016 @ 0634 E13h 8m
01 Nov 2016 @ 172611h 52m
01 Nov 2016 @ 0533 E10h 24m
31 Oct 2016 @ 1909 E12h 31m
31 Oct 2016 @ 0638 E11h 38m
30 Oct 2016 @ 1900 E11h 42m
30 Oct 2016 @ 0718 E10h 20m
29 Oct 2016 @ 2058 E11h 44m
29 Oct 2016 @ 0914 E13h 29m
28 Oct 2016 @ 1945 E10h 55m
28 Oct 2016 @ 0850 E9h 54m
27 Oct 2016 @ 2256 E11h 13m
27 Oct 2016 @ 1143 E10h 5m
27 Oct 2016 @ 0138 E9h 10m
26 Oct 2016 @ 162810h 18m
26 Oct 2016 @ 0609 E11h 1m
25 Oct 2016 @ 1908 E10h 36m
25 Oct 2016 @ 0832 E12h 18m
24 Oct 2016 @ 2014 E8h 49m
24 Oct 2016 @ 112510h 10m
24 Oct 2016 @ 0114 E11h 20m
23 Oct 2016 @ 135410h 44m
23 Oct 2016 @ 0309 E10h 3m
22 Oct 2016 @ 170613h 16m
22 Oct 2016 @ 0349 E13h 28m
21 Oct 2016 @ 14219h 57m
21 Oct 2016 @ 0423 E13h 5m
20 Oct 2016 @ 151810h 43m
20 Oct 2016 @ 0434 E10h 52m
19 Oct 2016 @ 174212h 36m
19 Oct 2016 @ 0505 E11h 27m
18 Oct 2016 @ 1738 E11h 58m
18 Oct 2016 @ 0540 E12h 51m
17 Oct 2016 @ 164912h 3m
17 Oct 2016 @ 0445 E10h 19m
16 Oct 2016 @ 182612h 3m
16 Oct 2016 @ 0622 E8h 55m
15 Oct 2016 @ 2127 E10h 29m
15 Oct 2016 @ 1058 E9h 56m
15 Oct 2016 @ 0102 E13h 34m
14 Oct 2016 @ 1128 E11h 11m
14 Oct 2016 @ 0017 E12h 35m
13 Oct 2016 @ 114211h 6m
13 Oct 2016 @ 0035 E10h 48m
12 Oct 2016 @ 134711h 40m
12 Oct 2016 @ 0206 E11h 0m
11 Oct 2016 @ 1506 E14h 58m
11 Oct 2016 @ 0008 E10h 41m
10 Oct 2016 @ 132712h 30m
10 Oct 2016 @ 0056 E11h 7m
09 Oct 2016 @ 1349 E9h 51m
09 Oct 2016 @ 0358 E13h 45m
08 Oct 2016 @ 141311h 39m
08 Oct 2016 @ 0233 E12h 12m
07 Oct 2016 @ 14219h 29m
07 Oct 2016 @ 0451 E13h 26m
06 Oct 2016 @ 1525 ns17h 36m
05 Oct 2016 @ 2148 E11h 5m
05 Oct 2016 @ 1043 E10h 32m
05 Oct 2016 @ 0011 E22h 19m
04 Oct 2016 @ 0152 E12h 1m
03 Oct 2016 @ 1351 E9h 52m
03 Oct 2016 @ 0359 E13h 31m
02 Oct 2016 @ 1428 E9h 10m
02 Oct 2016 @ 0518 E11h 31m
01 Oct 2016 @ 174713h 38m
01 Oct 2016 @ 0408 E9h 31m
30 Sep 2016 @ 183711h 17m
30 Sep 2016 @ 0719 E12h 51m
29 Sep 2016 @ 182811h 44m

Interval Statistics

Interval Count100
Min8h 22m
Max106d 9h 21m
Mean2d 6h 22m
Median11h 27m

Latest Notes

Note IDStart TimeEnd TimeEntrantNote
3852 05 Nov 2016 @ 1545 --- Maureen Prediction 1710 + - 15 minutes.
3844 04 Nov 2016 @ 1606 --- Maureen Overflow start. prediction 1730 + - 15 minutes
3840 04 Nov 2016 @ 0920 --- udo Post eruptive.
3838 03 Nov 2016 @ 1725 --- udo Overflow started approx 1725. Predicted eruption 1835 1905.
3832 30 Oct 2016 @ 1834 --- steve Great Fountain was in overflow at 1834. did not wait in the rain. Not boiling much at that time
3825 28 Oct 2016 @ 1135 --- DanS Pool up with small boils at edges
3822 27 Oct 2016 @ 1412 --- udo Appears to be post eruptive. Beach is wet up to about 4 inches. Runoff channels trickling in all directions & all the way down to marsh by White Dome. Low pool edge boils.
3810 25 Oct 2016 @ 1833 --- DanS Now in overflow, didn't stay for dark time eruption
3809 25 Oct 2016 @ 1744 --- DanS Not in overflow yet.
3806 25 Oct 2016 @ 1115 --- DanS Post eruptive 1115
3805 24 Oct 2016 @ 1006 --- udo Overflow just started perhaps a minute or 3 ago.
3797 23 Oct 2016 @ 0740 --- DanS Post eruptive. All done
3796 22 Oct 2016 @ 1545 --- Maureen Prediction 1710 + - 15 minutes.
3793 21 Oct 2016 @ 1234 --- udo Predicted for 1410 1440
3791 19 Oct 2016 @ 1653 --- Devin C. The overflow prediction is 1745 +/- 15
3758 07 Oct 2016 @ 1305 --- Maureen Prediction 1430 + - 20 minutes. Weird overflow start so a bit bigger window than normal.
3745 04 Oct 2016 @ 1805 --- ARoe Empty
3735 01 Oct 2016 @ 1625 --- Maureen Prediction 1750 + - 15 minutes based on 1625 overflow start. Raining in the LGB.
3728 30 Sep 2016 @ 0835 --- Kitt B It was post eruptive at 0835 with small trickle of water heard at terrace near willows.
3725 29 Sep 2016 @ 0837 --- Kitt B Great Fountain was post eruptive with boiling in a lower level pool a terraces quiet. Probably erupted 1 to 2 hours before.
3723 27 Sep 2016 @ 0940 --- Kitt B It was post eruptive.
3718 26 Sep 2016 @ 0830 --- udo Post eruptive.
3704 22 Sep 2016 @ 1630 --- Maureen No water visible at all between 1440 and 1630. Could easily go outside of window, maybe in dark.
3692 20 Sep 2016 @ 0958 --- udo NPS prediction 1530
3638 10 Sep 2016 @ 1220 --- Maureen Overflow start 1220, prediction 1345 + - 15m
3589 01 Sep 2016 @ 1135 --- Maureen Prediction 1300 + - 15 minutes.
3582 01 Sep 2016 @ 0047 --- Devin C. It was not in overflow at 0010
3590 01 Sep 2016 @ 0000 --- Devin C. A visitor at White Dome said Great Fountain started around 2330
3580 31 Aug 2016 @ 1115 --- Maureen Prediction 1240 + - 15 minutes
3572 30 Aug 2016 @ 0530 --- LynnS Eruption had finished
3562 28 Aug 2016 @ 1100 --- udo NPS prediction for this afternoon is 1600 aka 4PM
3563 28 Aug 2016 @ 0700 --- Barbara Lasseter down 4-5 inches...little water in run offs
3561 28 Aug 2016 @ 0630 --- LynnS Post erupt ice boiling
3558 27 Aug 2016 @ 1710 --- Barbara Lasseter overflow over outer rim...no boiling
3555 27 Aug 2016 @ 0736 --- Barbara Lasseter in overflow
3549 26 Aug 2016 @ 1614 --- Barbara Lasseter in overflow...no boiling...3rd attempt to send this
3547 26 Aug 2016 @ 1612 --- Barbara Lasseter in overflow.... no boiling yet
3548 26 Aug 2016 @ 1612 --- Barbara Lasseter in early overflow...no boiling
3546 26 Aug 2016 @ 1600 --- udo Overflow started about 10 minutes ago or about 1600.
3493 14 Aug 2016 @ 0700 --- Barbara Lasseter very late in the eruption. Several 6 to 8 foot bursts at 0714
3445 08 Aug 2016 @ 0945 --- udo 1st overflow started 0945
3260 08 Jul 2016 @ 1450 --- Barbara Lasseter in overflow @ 1450. Maureen Edgerton saw it earlier, but I didn't catch the time
3253 08 Jul 2016 @ 0200 --- User34 Not yet in overflow
3175 02 Jul 2016 @ 1005 --- udo Post eruptive. Probably went before 0900.
3145 28 Jun 2016 @ 0930 --- udo Post eruption low boiling at 0930
3069 13 Jun 2016 @ 2006 --- LynnS From 2006 until 2011 Great Fountain's water level was about 10-12 inches below overflow with post-erupt ice boiling. Water from the most recent eruption was still trickling down the run-off channel at least 50-75 feet toward White Dome.
3034 10 Jun 2016 @ 0800 --- udo Runoff channel near 2nd culvert still trickling slightly. Guessing it went ~ 0600.
3010 08 Jun 2016 @ 1930 --- udo GF was not in overflow at 1930 but was rising. Probably will start after 2100.
3001 07 Jun 2016 @ 0648 --- Barbara Lasseter full. not in overflow
2910 28 May 2016 @ 2050 --- Tara Not yet in overflow.
2906 28 May 2016 @ 0915 --- cb well into overflow at 915
2604 01 Nov 2015 @ 1425 --- Maureen Overflow 1425. Prediction 1550 + - 15 minutes.
2589 30 Oct 2015 @ 1434 --- Maureen Overflow start 1434. Prediction 1600 + - 15 minutes.
2588 30 Oct 2015 @ 1316 --- udo As of 1315 it was 6-8 inches below overflow.
2583 26 Oct 2015 @ 1005 --- Maureen Overflow start 1005, prediction 1130 + - 15 minutes.
2575 24 Oct 2015 @ 1435 --- Maureen Overflow start 1435. Prediction 1600 + - 15 minutes.
2572 23 Oct 2015 @ 1443 --- Maureen Overflow 1355. Prediction 1520 + - 15 minutes. Fabulous day in the LGB
2569 22 Oct 2015 @ 1355 --- Maureen Overflow start 1355. Prediction 1520 +- 15 minutes
2567 21 Oct 2015 @ 1130 --- Maureen Overflow start. Prediction 1255 + - 15 minutes. The sun is out, woo hoo.
2546 14 Oct 2015 @ 1445 --- Maureen Overflow start 1445. Prediction 1610 + - 15 minutes
2542 13 Oct 2015 @ 1512 --- Maureen Overflow start 1512. Prediction 1640 + - 15 minutes.
2538 12 Oct 2015 @ 1402 --- Maureen Overflow start 1402. Prediction 1530 + - 15 minutes.
2489 08 Oct 2015 @ 1105 --- Maureen Overflow start 1105, prediction 1230 + - 15 minutes.
2487 07 Oct 2015 @ 1345 --- Maureen Overflow start 1345. Prediction 1510 + - 15 minutes.
2464 03 Oct 2015 @ 0910 --- Maureen Overflow start 0910. Prediction 1035 + - 15 minutes.
2456 02 Oct 2015 @ 1145 --- Maureen Overflow start 1145. Prediction 1310 + - 15 minutes.
2446 30 Sep 2015 @ 1558 --- udo Overflow started 1558. Prediction 1710 to 1750.
2443 30 Sep 2015 @ 0753 --- udo Done. In last stages. Boils audible in vent. Still running off of upper terrace but very slightly.
2437 29 Sep 2015 @ 0930 --- Maureen Overflow start 0930. Prediction 1055 + - 15 minutes.
2431 28 Sep 2015 @ 0910 --- Maureen Overflow start 0910. Prediction 1035 + - 15 minutes.
2427 27 Sep 2015 @ 1250 --- Maureen Overflow start at 1215. Prediction 1340 + - 15 minutes.
2418 25 Sep 2015 @ 1345 --- Maureen Overflow start 1345. Prediction 1510 +- 15 minutes.
2415 24 Sep 2015 @ 1527 --- Maureen Overflow start seen at 1527. Prediction is 1640 to 1710.
2412 23 Sep 2015 @ 1720 --- Maureen Prediction 1845 + - 15 minutes based on overflow start of 1720.
2374 18 Sep 2015 @ 1341 --- udo Overflow started 1341
2338 13 Sep 2015 @ 1059 --- Maureen Overflow start 1026. Prediction 1150 + - 15 minutes.
2317 10 Sep 2015 @ 1621 --- Maureen Overflow start 1621. Prediction 1745 + - 15 minutes
2289 07 Sep 2015 @ 1235 --- Maureen Overflow start 1235. Prediction 1400 + - 15 minutes.
2278 07 Sep 2015 @ 0620 --- Suzanne over by 0620
2270 05 Sep 2015 @ 1807 --- udo Overflow started 1807. Prediction window was 1430 to 1830 which ain't gonna happen.
2264 05 Sep 2015 @ 0558 --- Pat Snyder Possibly ie at this time. a lot of steam when I drove by.
2260 04 Sep 2015 @ 1800 04 Sep 2015 @ 1830 WillBoekel prediction based on overflow
2245 02 Sep 2015 @ 1215 --- Maureen Overflow start 1215. Prediction 1340 + - 15 minutes.
2232 01 Sep 2015 @ 1225 --- udo in early overflow before 1225. Predicted for 1330 1400 approximately.
2225 31 Aug 2015 @ 1650 --- Maureen Prediction is 1815 + - 15 minutes.
2201 28 Aug 2015 @ 1220 --- Maureen Overflow start. Prediction 1345 + - 15 minutes.
2189 26 Aug 2015 @ 0410 --- User34 Went into overflow sometime between 0405 and 0415
2185 24 Aug 2015 @ 1640 --- Maureen Prediction 1750 to 1820.
2175 22 Aug 2015 @ 0908 --- udo 1st overflow started 0908.
2171 21 Aug 2015 @ 0850 --- Maureen Overflow start.
2112 13 Aug 2015 @ 1710 --- udo Overflow started 1710
2097 12 Aug 2015 @ 0913 --- udo Overflow started 0913
2087 11 Aug 2015 @ 1710 --- udo Post eruptive. Erupted perhaps around 1500.
2019 04 Aug 2015 @ 1408 --- udo 1st overflow started 1329 and crashed. 2nd overflow started 1408.
1988 30 Jul 2015 @ 0810 --- udo Post eruptive.
1955 22 Jul 2015 @ 0747 --- udo Post eruptive
1949 21 Jul 2015 @ 1733 --- LynnS Great Fountain had a five minute false overflow at 1733.
1962 21 Jul 2015 @ 1248 --- LynnS Great Fountain was still doing post-eruptive boiling around the rim of the inner crater.
1916 16 Jul 2015 @ 1147 --- udo overflow started 1147
1913 15 Jul 2015 @ 0609 --- JimS Barbara reports that it appeared to be ending at 0609.
EntrySourceLinkComment
13 Aug 2016 @ 2027 JSJ https://www.youtube.com/watch?v=esB95f0I52U Time lapse video of Great Fountain Geyser's evening eruption on 13 August 2016.
13 Aug 2016 @ 2027 JSJ https://www.flickr.com/photos/jsjgeology/30109996042 Photo (1 of 7) of Great Fountain Geyser's evening eruption on 13 August 2016.
10 Aug 2016 @ 2018 JSJ https://www.flickr.com/photos/jsjgeology/30139312821 Photo (1 of 24) of Great Fountain Geyser's evening eruption on 10 August 2016.
10 Aug 2016 @ 2018 JSJ https://www.flickr.com/photos/jsjgeology/29594675523 Thermal image (1 of 3) of Great Fountain Geyser's evening eruption on 10 August 2016.
10 Aug 2016 @ 2018 JSJ https://www.youtube.com/watch?v=t4LIaXxRt0s Time lapse video of Great Fountain Geyser's evening eruption on 10 August 2016.
08 Sep 2014 @ 1505 Micah Kipple https://www.flickr.com/photos/sgplewka/15604440267 flickr
06 Sep 2014 @ 2003 Micah Kipple https://www.flickr.com/photos/wildwood4est/15368309463 flickr
13 Sep 2014 @ 1411 Micah Kipple https://www.flickr.com/photos/digbydachshund/15940278098 flickr
02 Jun 2014 @ 1303 Micah Kipple https://www.flickr.com/photos/125791209@N06/16128797716 flickr
25 Sep 2014 @ 1725 Micah Kipple https://www.flickr.com/photos/hhayk/16012608917 Flickr
24 Sep 2014 @ 1907 Micah Kipple https://www.flickr.com/photos/rtsmithcpa/15187347577 Flickr
24 Sep 2014 @ 1907 Micah Kipple https://www.flickr.com/photos/rtsmithcpa/15187166390 Flickr photo
19 Sep 2012 @ 1502 Jake http://www.youtube.com/watch?v=B3bTX5OQUEY a visitor\'s excellent video with the blue bubble at the 3 minute mark
Baseline does not exist.


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