Last Known Eruption
21d 4h 57m ago

Latest Eruptions

Eruption DurationInterval
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
01 Aug 2019 @ 14069s 18m
01 Aug 2019 @ 134810s 40m
01 Aug 2019 @ 130810s 34m
01 Aug 2019 @ 12349s 1d 1h 10m
31 Jul 2019 @ 11247s 1d 18h 0m
29 Jul 2019 @ 1724 min1h 10m
29 Jul 2019 @ 161418m
29 Jul 2019 @ 155634m
29 Jul 2019 @ 152218m
29 Jul 2019 @ 150433m
29 Jul 2019 @ 143150m
29 Jul 2019 @ 134117m
29 Jul 2019 @ 1324 min1h 11m
29 Jul 2019 @ 121335m
29 Jul 2019 @ 113817m
29 Jul 2019 @ 112115m
29 Jul 2019 @ 1105:04 min35m 42s
29 Jul 2019 @ 1029:223d 22h 19m
25 Jul 2019 @ 12108s 4d 23h 53m
20 Jul 2019 @ 12177s 25m
20 Jul 2019 @ 11528s 35m
20 Jul 2019 @ 11179s 59m
20 Jul 2019 @ 10182d 15h 39m
17 Jul 2019 @ 18396d 1h 46m
11 Jul 2019 @ 16536h 37m
11 Jul 2019 @ 1016a few seconds7d 20h 12m
03 Jul 2019 @ 140429m
03 Jul 2019 @ 133526m
03 Jul 2019 @ 130930m
03 Jul 2019 @ 123915h 37m
02 Jul 2019 @ 210226m
02 Jul 2019 @ 203631m
02 Jul 2019 @ 200526m
02 Jul 2019 @ 193929m
02 Jul 2019 @ 19101d 23h 28m
30 Jun 2019 @ 194228m
30 Jun 2019 @ 191425m
30 Jun 2019 @ 184928m
30 Jun 2019 @ 182127m
30 Jun 2019 @ 17541d 4h 3m
29 Jun 2019 @ 135110s 25m
29 Jun 2019 @ 132611s 18h 16m
28 Jun 2019 @ 19101d 8h 14m
27 Jun 2019 @ 10562h 31m
27 Jun 2019 @ 082523m
27 Jun 2019 @ 080225m
27 Jun 2019 @ 07375d 12h 42m
21 Jun 2019 @ 185534m
21 Jun 2019 @ 182135m
21 Jun 2019 @ 17464d 5h 35m
17 Jun 2019 @ 121130m
17 Jun 2019 @ 114134m
17 Jun 2019 @ 110711s 23h 51m
16 Jun 2019 @ 11169s 28m
16 Jun 2019 @ 104811s 2d 22h 54m
13 Jun 2019 @ 11541h 48m
13 Jun 2019 @ 100622h 44m
12 Jun 2019 @ 11221h 4m
12 Jun 2019 @ 101821h 51m
11 Jun 2019 @ 12273m

Interval Statistics

Interval Count100
Min3m
Max11d 1h 39m
Mean1d 2h 54m
Median35m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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.
5048 19 Jul 1979 @ 1800 --- research-mab 07/19/1979 Right at the beginning of Constant geyser’s eruption, steam explosions sounded just like firecrackers exploding - 9 second eruption.
5375 04 Sep 1977 @ 1025 --- research-mab 09/04/1977 Complete Log entry: Little Whirligig started to erupt at 1016 there was no water in the pool when the geyser first sprayed. It lasted about 8 minutes. Constant geyser erupted twice during L.W. eruption, the first eruption was small 4-5 ft. the second was very powerful up to 25’ After L.W. Big Whirligig erupted at 1025 The pool was at an extreme low level when it started. Splutter pot started eruptions in unison with higher bursts matching the higher bursts of all four geysers.
5182 12 Jul 1977 @ 1800 --- research-mab 07/12/1977 Africa Fireball Arsenic Blue Big Whirly and Constant all in eruption at once. {no times}
5152 30 Jun 1977 @ 1800 --- research-mab 06/30/1977 Constant has been erupting every few minutes. Normal types following each other. In a space of 10 minutes 3 eruptions were observed.
5232 11 Sep 1976 @ 1800 --- research-mab 09/11/1976 Constant apparently erupting every 15-20 secs, belching muddy water. Observed by maintenance guys from 1100-1130
5250 01 Sep 1976 @ 1020 --- research-mab 09/01/1976 at 1020 Big Whirly & L.W. both erupting at 1020. Eruptions of Big are very large, perhaps 8-10’, while L.W. barely goes. Constant is full of water but not erupting.
5291 31 Aug 1976 @ 1800 --- research-mab 08/31/1976 Constant has been erupting every 15-20 minutes. {see complete text of disturbance note under "Whirligig 1830"}
5256 30 Aug 1976 @ 1100 30 Aug 1976 @ 1130 research-mab 08/30/1976 Visitor report of at least 4 eruptions of Constant in a period of about half hour. Visitor could be seeing Big Whirly (?), but for either features, such a display is unusual. (~11:00 – 11:30) {Note- major disturbance effects the following day-mab}
5553 15 Jul 1976 @ 1800 --- research-mab 07/15/1976 Constant continues having eruptions 2 minutes apart then an interval of 45-60 minutes, I think.
5631 02 Aug 1975 @ 1800 --- research-mab 08/02/1975 Saw Constant eruption an estimated 40’ {no time noted}
5591 29 May 1975 @ 1800 --- research-mab 05/29/1975 {no time noted} Constant seen occasionally in short eruptions (duration to height of 10’-20’). Does not seem to be influenced by Whirligigs.
5793 28 Aug 1974 @ 1840 --- research-mab 08/28/1974 Constant – Completely dry at 1840 – L.W. was wet - had apparently been erupting.
5757 16 Aug 1974 @ 1755 --- research-mab 8/16/1974 Pinwheel erupting at 1755 ~ Constant observed 5 in a row and then I left.
5756 16 Aug 1974 @ 1530 --- research-mab 08/16/1974 Constant water level way down 1317, 1530 1st of 6 erups in 10 min
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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