Last Known Eruption
16h 44m ago

Latest Eruptions

Eruption DurationInterval
20 Sep 2020 @ 170358m
20 Sep 2020 @ 160552m
20 Sep 2020 @ 15138s 2d 2h 48m
18 Sep 2020 @ 122527m
18 Sep 2020 @ 115851m
18 Sep 2020 @ 110723m
18 Sep 2020 @ 10442d 21h 20m
15 Sep 2020 @ 13241d 35m
14 Sep 2020 @ 124952m
14 Sep 2020 @ 11577d 21h 12m
06 Sep 2020 @ 144534m
06 Sep 2020 @ 141140m
06 Sep 2020 @ 13311h 14m
06 Sep 2020 @ 121741m
06 Sep 2020 @ 113634m
06 Sep 2020 @ 11026d 18h 10m
30 Aug 2020 @ 16521h 2m
30 Aug 2020 @ 15501d 5h 3m
29 Aug 2020 @ 10476d 17h 36m
22 Aug 2020 @ 17114s 29m
22 Aug 2020 @ 16424d 21h 52m
17 Aug 2020 @ 185040m
17 Aug 2020 @ 181039m
17 Aug 2020 @ 17314d 5h 25m
13 Aug 2020 @ 12068s 2d 21h 28m
10 Aug 2020 @ 143832m
10 Aug 2020 @ 14063d 4h 11m
07 Aug 2020 @ 09555d 23h 47m
01 Aug 2020 @ 10080:1231m
01 Aug 2020 @ 09370:1134m
01 Aug 2020 @ 09030:0736m
01 Aug 2020 @ 08270:0918h 17m
31 Jul 2020 @ 14105s 2d 2h 20m
29 Jul 2020 @ 11503d 23h 12m
25 Jul 2020 @ 12387s 6d 23h 11m
18 Jul 2020 @ 13270:1234m
18 Jul 2020 @ 12530:1429m
18 Jul 2020 @ 12240:1333m
18 Jul 2020 @ 11510:1030m
18 Jul 2020 @ 11210:1329m
18 Jul 2020 @ 10520:091h 6m
18 Jul 2020 @ 09460:122h 11m
18 Jul 2020 @ 07350:114d 17h 37m
13 Jul 2020 @ 135829m
13 Jul 2020 @ 13297d 1h 14m
06 Jul 2020 @ 12157s 4d 2h 35m
02 Jul 2020 @ 09402d 22h 2m
29 Jun 2020 @ 11381h 15m
29 Jun 2020 @ 10231d 0m
28 Jun 2020 @ 10230:1757m
28 Jun 2020 @ 09260:1141m
28 Jun 2020 @ 08450:161h 25m
28 Jun 2020 @ 07200:087d 17h 30m
20 Jun 2020 @ 135021m
20 Jun 2020 @ 13298s 8d 20h 22m
11 Jun 2020 @ 170710s 11d 21h 59m
30 May 2020 @ 190830m
30 May 2020 @ 18384h 46m
30 May 2020 @ 135244m
30 May 2020 @ 1308241d 21h 19m
01 Oct 2019 @ 15497d 1h 3m
24 Sep 2019 @ 14466d 23h 51m
17 Sep 2019 @ 14551h 0m
17 Sep 2019 @ 135521h 18m
16 Sep 2019 @ 163720m
16 Sep 2019 @ 161724m
16 Sep 2019 @ 15531d 3h 55m
15 Sep 2019 @ 115819m
15 Sep 2019 @ 113920m
15 Sep 2019 @ 111911d 1h 39m
04 Sep 2019 @ 094019m
04 Sep 2019 @ 092141m
04 Sep 2019 @ 084020m
04 Sep 2019 @ 082040m
04 Sep 2019 @ 07401d 21h 20m
02 Sep 2019 @ 1020 min21m
02 Sep 2019 @ 0959 min5d 20h 42m
27 Aug 2019 @ 13174d 16h 36m
22 Aug 2019 @ 20418d 6h 52m
14 Aug 2019 @ 134920m
14 Aug 2019 @ 13299s 45m
14 Aug 2019 @ 124410s 23m
14 Aug 2019 @ 122111s 20m
14 Aug 2019 @ 12019s 22m
14 Aug 2019 @ 113910s 8d 17h 48m
05 Aug 2019 @ 17511h 36m
05 Aug 2019 @ 161521m
05 Aug 2019 @ 15541h 39m
05 Aug 2019 @ 1414:1618m 4s
05 Aug 2019 @ 1356:1219m
05 Aug 2019 @ 133721m
05 Aug 2019 @ 131636m
05 Aug 2019 @ 124020m
05 Aug 2019 @ 122036m
05 Aug 2019 @ 114435m
05 Aug 2019 @ 1108:5417m
05 Aug 2019 @ 10511h 0m
05 Aug 2019 @ 09513d 19h 6m
01 Aug 2019 @ 14458s 21m
01 Aug 2019 @ 142410s 18m

Interval Statistics

Interval Count100
Min17m
Max241d 21h 19m
Mean4d 3h 52m
Median52m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
16136 14 Sep 2020 @ 1223 --- Graham Splashes but no eruption.
16135 14 Sep 2020 @ 1130 --- Graham Push but no eruption.
15034 18 Jul 2020 @ 1017 --- Mkeller Waves and roiling but no eruption
15032 18 Jul 2020 @ 0917 --- Mkeller Waves and roiling but no eruption
15033 18 Jul 2020 @ 0843 --- Mkeller Waves and roiling but no eruption
15031 18 Jul 2020 @ 0811 --- Mkeller Waves and roiling but no eruption
15030 18 Jul 2020 @ 0659 --- Mkeller Waves and roiling but no eruption
15029 18 Jul 2020 @ 0619 --- Mkeller Waves and roiling but no eruption
14973 13 Jul 2020 @ 1504 --- nails Boiled up, no eruption
14972 13 Jul 2020 @ 1430 --- nails Boiled up, no eruption
14776 29 Jun 2020 @ 0900 29 Jun 2020 @ 1023 Graham fluctuating up and down. Splashed at 0947.
14760 28 Jun 2020 @ 1054 --- Mkeller Waves and roiling but no eruption
14759 28 Jun 2020 @ 0948 --- Mkeller Waves and roiling but no eruption
14758 28 Jun 2020 @ 0805 --- Mkeller Waves and roiling but no eruption
13795 24 Sep 2019 @ 1607 --- DanS Domed.
13794 24 Sep 2019 @ 1546 --- DanS Domed.
13792 24 Sep 2019 @ 1525 --- DanS Bubbling. No eruption.
13791 24 Sep 2019 @ 1505 --- DanS Domed but didn’t erupt
13705 15 Sep 2019 @ 1216 --- Skookum Push, no eruption. 4min boil before subsiding.
13247 14 Aug 2019 @ 1508 14 Aug 2019 @ 1513 cb push but did not erupt
13246 14 Aug 2019 @ 1448 14 Aug 2019 @ 1454 cb push but no eruption
13245 14 Aug 2019 @ 1427 14 Aug 2019 @ 1433 cb push but no eruption
13244 14 Aug 2019 @ 1408 14 Aug 2019 @ 1412 cb push but no eruption
12793 25 Jul 2019 @ 0950 25 Jul 2019 @ 1250 cb Attempts to erupt but fails. Nice boil that looks like it will erupt, stays boiling for 4+m, then stops and pool falls below overflow. Constants pool is being filled by 5 small erupters that seem to run along a line to the north east (up toward the Graceful area) Attempts @ 1007, 1025, 1042, 1058, 1116 made 2 good attempts at erupting but again failed, 1133, 1150, 1210 erupted! 1225, 1243.
11765 13 Jun 2019 @ 0840 13 Jun 2019 @ 1005 CrisG no eruptions during this period. very steamy morning, so difficult to see pool. Arrived to a full pool. I did not notice any pool crashes based on rock coverage, but unable to see convection/bubbling until right before eruption.
11768 12 Jun 2019 @ 1130 12 Jun 2019 @ 1242 CrisG No eruptions during this time (3rd burst of previous eruption was at 1230). Left for Steamboat!
11070 24 Apr 2019 @ 1340 24 Apr 2019 @ 1425 DanS Tried to erupt about 1340, 1400, 1425. Wind and hail aborted.
8265 22 May 2018 @ 1225 22 May 2018 @ 1233 cb another boil with convection waves but failed to erupt
8263 22 May 2018 @ 1154 22 May 2018 @ 1200 cb small boil to about 3 inches. put out nice convection waves but did not erupt
8173 12 May 2018 @ 1024 12 May 2018 @ 1535 srboom Pool would fill and try to erupt about every twenty minutes for the entirety of the time I was there, but no eruptions were observed. The try at 1327 looked really promising, but no go. There appears to be a fair amount of water flowing in from another source.
8097 07 May 2018 @ 1047 07 May 2018 @ 1436 cb Did not erupt while I was there. It did have 2 nice boils that each lasted for 6 minutes and were 90 minutes apart.
7772 25 Oct 2017 @ 1308 --- DanS Another aborted eruption with only water doming.
7771 25 Oct 2017 @ 1228 --- DanS Tried to erupt, but aborted. Windy!
7774 29 Sep 2017 @ 1601 29 Sep 2017 @ 1639 Tara Pushes at 1601, 1614, 1627, and 1639.
7773 29 Sep 2017 @ 1322 29 Sep 2017 @ 1345 Tara Pushes at 1322, 1333, and 1345.
5894 07 Sep 2017 @ 1805 --- Graham Tried and failed
5895 07 Sep 2017 @ 1703 --- Graham Tried and failed. Would have been a trio with Fireball and Arsenic.
5896 07 Sep 2017 @ 1629 --- Graham Tried and failed.
5897 07 Sep 2017 @ 1602 --- Graham Tried and failed. Would have been a trio with Whirligig and Fireball.
5898 07 Sep 2017 @ 1529 --- Graham Tried and failed
5899 07 Sep 2017 @ 1234 --- Graham Tried and failed
5900 07 Sep 2017 @ 1208 --- Graham Tried but failed
5901 07 Sep 2017 @ 1137 --- Graham Tried but failed
5902 07 Sep 2017 @ 1111 --- Graham Tried and failed.
5903 07 Sep 2017 @ 1037 --- Graham Tried but failed.
5871 05 Sep 2017 @ 1409 --- Pat Snyder push and fail. 20 min push
5872 05 Sep 2017 @ 1346 --- Pat Snyder Push no eruption.
5873 05 Sep 2017 @ 1315 --- Pat Snyder push no eruption
5874 05 Sep 2017 @ 1247 --- Pat Snyder push no eruption
5875 05 Sep 2017 @ 1209 --- Pat Snyder push no eruption
5876 05 Sep 2017 @ 1140 --- Pat Snyder Fill bt no eruption
5785 04 Sep 2017 @ 1707 --- Graham Tried and failed
5786 04 Sep 2017 @ 1531 --- Graham Tried and failed
5787 04 Sep 2017 @ 1422 --- Graham Tried but failed
5788 04 Sep 2017 @ 1310 --- Graham Tried but failed.
5077 19 Aug 2017 @ 1546 --- CrisG Decent fill (best I've seen so far today) with bubbling, but no eruption and pool fell.
4937 17 Aug 2017 @ 1415 17 Aug 2017 @ 1924 nails No eruptions observed during this time period. Would heat up and bubble for about 4 to 5 minutes, then crash at about 20 minutes intervals. Boiled at 1434, 1500, 1522, 1545, 1609, 1635, 1657, 1722, 1743, 1808, 1832, 1858, 1924.
4400 03 Jul 2017 @ 1342 --- Graham Tried to erupt.
4401 03 Jul 2017 @ 1323 --- Graham Tried to erupt.
4402 03 Jul 2017 @ 1246 --- Graham Tried to erupt but failed.
4326 16 Jun 2017 @ 1244 --- CrisG pool looked good, nice bubbling. Then pool crashed.
4273 08 Jun 2017 @ 1038 --- CrisG lots of good waves, convection, and bubbling. Looked REALLY good but no eruption.
4274 08 Jun 2017 @ 1017 --- CrisG much better waves and great preplay. looked very good for eruption but never developed and pool dropped.
4275 08 Jun 2017 @ 0954 --- CrisG decent waves and preplay, but pool dropped. no eruption.
4269 07 Jun 2017 @ 1328 --- novakg Push. No eruption.
4233 06 Jun 2017 @ 1604 --- JSJ Constant Geyser tried to erupt at 1604 + ~10s, but it crashed - no eruption.
4234 06 Jun 2017 @ 1520 --- JSJ Constant Geyser crashed at 1520-ish. It had preplay roiling, but no eruption.
4170 31 May 2017 @ 1600 --- kc came back later in afternoon and stayed about 3 hours. all Constants were failed eruptions.
4152 29 May 2017 @ 1220 --- srboom Almost erupted, not quite there
4151 29 May 2017 @ 1012 --- srboom Tried to erupt, good high blurbles
4068 06 May 2017 @ 1031 06 May 2017 @ 1547 srboom Constant is on its 20 minute cycles, with no actual eruptions. The morning/early afternoon had small splurts with a couple blurbles, later in the afternoon (1407 on) it turned to fairly steady 6-8 in. blurbles.
3871 06 Nov 2016 @ 1314 06 Nov 2016 @ 1508 srboom pool filled and drained, with attempts at eruptions about every 20 minutes. big blurble at 14:26, but no eruption.
3823 27 Oct 2016 @ 1345 27 Oct 2016 @ 1555 DanS No eruptions 2+ hours; when pool is full, has bubbles surfacing over vent, but unable to start full eruption. Very windy, with estimated sustained winds at 25 mph and gusts higher.
3804 23 Oct 2016 @ 1314 --- DanS Trying to erupt, with full pool bubbles and small bursts from 1314 - 1320
3667 15 Sep 2016 @ 1036 --- CrisG Good convection and waves. Good push but no eruption. Cool and breezy morning.
3668 15 Sep 2016 @ 0956 --- CrisG Over the course of 2 minutes, had good convection and waves, made 2 pushes with small blurps before pool dropped.No eruption.
3641 10 Sep 2016 @ 1538 --- novakg Push with small boiling. No eruption.
3604 05 Sep 2016 @ 0953 --- novakg Push, no eruption. Rainy and cold.
3605 05 Sep 2016 @ 0920 --- novakg Push, no eruption. Cold and rainy.
3066 14 Jun 2016 @ 1450 --- CrisG Good water level and made 2 pushes but no eruption. Pool fell after second push.
2856 19 May 2016 @ 0955 19 May 2016 @ 0957 MAB Serious boiling for 2 minutes with no eruption, continuing as pool lowered and you could tell it was a No-Go. Way bigger activity than the usually observed "push with no eruption".
2606 01 Nov 2015 @ 0930 01 Nov 2015 @ 1320 MAB Regular cycles with no eruption, 0938 1007 1039 1112 1310. No other eruptions or attempts seen.
2593 31 Oct 2015 @ 1010 --- MAB good try, good push, but no eruption 1010
1501 13 Jan 2015 @ 1600 --- MAB Inactive- the runoff 'shelf' where we watch first overflow when Constant refills prior to a normal eruption is green.
1486 02 Nov 2014 @ 0000 02 Nov 2014 @ 2359 MAB Both Constant and Whirligig have lots of water coming into them from above, since late Sept. Both were looking a little 'colloidal blue' in the centers of their craters. I wish I had another few weeks to watch what happens.
1462 21 Oct 2014 @ 1240 21 Oct 2014 @ 1717 MAB Cycles with no eruptions at regular intervals 1240-1400, and 1514-1717
1429 30 Sep 2014 @ 1200 30 Sep 2014 @ 1800 MAB Regular cycles from 15-20 minutes with overflow, pushes or attempts at bursts less than 12", but no airborne eruptions seen. Observed 3+ hours in the morning, and separate 1 hour visits in the afternoon with no eruptions.  
1047 20 Apr 2014 @ 0000 20 Apr 2014 @ 2359 MAB Opening Weekend saw no eruptions of Constant Geyser.  It cycles as it has in the past at regular intervals (less than 20 min) but does not erupt.  Per the YVO graphs this change occurred on April 8, 2014.  I did not know how to interpret the drastic change in the shape of the YVO graph until I was able to observe the cycles in person.  Some of them look quite promising with good blurps and overflow, but no eruptions were seen during the time it was observed.
879 29 Sep 2013 @ 0000 29 Sep 2013 @ 2359 MAB Constant was cycling as usual today at about 19 minutes. The winds were nasty both there and at Vixen, I did not see a full eruption of Constant, but the cycles are holding. 3 pushes with no eruption, exit, return and one push, then I left.
373 31 Jul 2012 @ 1735 31 Jul 2012 @ 1850 MAB Tuesday 31 July - regular pushes at 1735, 1755, 1813, 1832, and 1850, but no true eruptions seen in that time frame
374 21 Jul 2012 @ 1639 21 Jul 2012 @ 1934 MAB Push with no eruption 3 out of 9 intervals (1639, 1819, and 1934)
77 14 Jan 2012 @ 1845 --- Graham Water came up, then went down without erupting.
4725 19 Jul 1999 @ 1800 --- research-mab 07/19/1999 Constant “constantly” every 15-20 min
5381 01 Feb 1995 @ 1800 --- research-mab 2/1/95 It seems the disturbance activity is basin wide! .... Constant was seen to have a 3 burst series followed by a 4 burst series and a 4 burst series.
4711 06 Jul 1990 @ 1800 --- research-mab 7/6/1990 Constant, Big Whirligig and Fireball all very active today.
7641 26 Jun 1986 @ 1800 --- research-mab 6-26-1986 Constant Geyser – Erupting at irregular & possibly cyclic intervals in spite of heavy inflow of water from northeast side. Water is moderately opalescent blue & algae lines the eastern 1/3 f the geyser’s basin. T=144º
5132 01 Jun 1980 @ 1800 --- research-mab 06/01/1980 Constant Geyser – beautiful green algae, no evidence of recent activity, 124ºF
4991 22 Sep 1979 @ 1800 --- research-mab 09/22/1979 I have not seen Constant erupt since the disturbance. It gently boiled for about a minute and a half this afternoon.
5062 24 Aug 1979 @ 1800 --- research-mab 08/24/1979 Constant Geyser had 2 eruptions within 5 minutes. {no times but indicating multiple burst eruptions-mab}
5056 08 Aug 1979 @ 1047 --- research-mab 08/08/1979 At 1047 Constant boiled and well up as it does prior to erupting, but did not erupt.
EntrySourceLinkComment
09 Aug 2014 @ 1654 JSJ https://www.flickr.com/photos/jsjgeology/15401110206 Photo (1 of 2) of Constant Geyser's 4:54 PM eruption on 9 August 2014.
09 Aug 2014 @ 1638 JSJ https://www.flickr.com/photos/jsjgeology/15237473020 Photo (1 of 3) of Constant Geyser's 4:38 PM eruption on 9 August 2014.
07 Jul 2014 @ 1755 JSJ https://www.flickr.com/photos/jsjgeology/15045557957 Photo (1 of 4) of Constant Geyser's 5:55 PM eruption on 7 July 2014.
07 Jul 2014 @ 1500 JSJ https://www.flickr.com/photos/jsjgeology/15232117335 Photo (1 of 5) of Constant Geyser's 3:00 PM eruption on 7 July 2014.
07 Jul 2014 @ 1443 JSJ https://www.flickr.com/photos/jsjgeology/15229022821 Photo (1 of 4) of Constant Geyser's 2:43 PM eruption on 7 July 2014.
07 Jul 2014 @ 1342 JSJ https://www.flickr.com/photos/jsjgeology/15045335649 Photo (1 of 3) of Constant Geyser's 1:42 PM eruption on 7 July 2014.
Baseline does not exist.


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