Last Known Eruption
1d 9h 0m ago

Latest Eruptions

Eruption DurationInterval
02 Aug 2021 @ 121020m
02 Aug 2021 @ 11501h 19m
02 Aug 2021 @ 1031 ns23m
02 Aug 2021 @ 100818m
02 Aug 2021 @ 095021m
02 Aug 2021 @ 092923m
02 Aug 2021 @ 090618m
02 Aug 2021 @ 084819h 15m
01 Aug 2021 @ 133334m
01 Aug 2021 @ 125911m
01 Aug 2021 @ 124811s 18m
01 Aug 2021 @ 123012s 24m
01 Aug 2021 @ 120627m
01 Aug 2021 @ 113918h 14m
31 Jul 2021 @ 172517m
31 Jul 2021 @ 170819m
31 Jul 2021 @ 164920m
31 Jul 2021 @ 16291h 35m
31 Jul 2021 @ 145424m
31 Jul 2021 @ 143016m
31 Jul 2021 @ 141418m
31 Jul 2021 @ 135617m
31 Jul 2021 @ 133959m
31 Jul 2021 @ 124018m
31 Jul 2021 @ 122217m
31 Jul 2021 @ 120517m
31 Jul 2021 @ 114816m
31 Jul 2021 @ 113220m
31 Jul 2021 @ 111217m
31 Jul 2021 @ 105519m
31 Jul 2021 @ 103617m
31 Jul 2021 @ 101919m
31 Jul 2021 @ 100042m
31 Jul 2021 @ 091819m
31 Jul 2021 @ 085920m
31 Jul 2021 @ 08392d 13h 19m
28 Jul 2021 @ 19202d 2h 29m
26 Jul 2021 @ 165130m
26 Jul 2021 @ 162121m
26 Jul 2021 @ 160021h 32m
25 Jul 2021 @ 18281d 3h 7m
24 Jul 2021 @ 15214d 19h 30m
19 Jul 2021 @ 195118m
19 Jul 2021 @ 193321m
19 Jul 2021 @ 191219m
19 Jul 2021 @ 185320m
19 Jul 2021 @ 183319m
19 Jul 2021 @ 181419m
19 Jul 2021 @ 175519m
19 Jul 2021 @ 173619m
19 Jul 2021 @ 171720h 29m
18 Jul 2021 @ 204819m
18 Jul 2021 @ 202919m
18 Jul 2021 @ 201019m
18 Jul 2021 @ 195121m
18 Jul 2021 @ 193018m
18 Jul 2021 @ 191219m
18 Jul 2021 @ 18531d 2h 13m
17 Jul 2021 @ 164021m
17 Jul 2021 @ 161920m
17 Jul 2021 @ 15591d 2h 4m
16 Jul 2021 @ 135526m
16 Jul 2021 @ 132927m
16 Jul 2021 @ 130223m
16 Jul 2021 @ 123920m
16 Jul 2021 @ 121921m
16 Jul 2021 @ 115823m
16 Jul 2021 @ 113521m
16 Jul 2021 @ 111419m
16 Jul 2021 @ 105520m
16 Jul 2021 @ 103521m
16 Jul 2021 @ 101419m
16 Jul 2021 @ 095518m
16 Jul 2021 @ 093719m
16 Jul 2021 @ 091821m
16 Jul 2021 @ 085715h 55m
15 Jul 2021 @ 170227m
15 Jul 2021 @ 163529m
15 Jul 2021 @ 160623m
15 Jul 2021 @ 154319m
15 Jul 2021 @ 152430m
15 Jul 2021 @ 145429m
15 Jul 2021 @ 142520m
15 Jul 2021 @ 140528m
15 Jul 2021 @ 133729m
15 Jul 2021 @ 130818h 24m
14 Jul 2021 @ 184417m
14 Jul 2021 @ 182720m
14 Jul 2021 @ 180724m
14 Jul 2021 @ 174318m
14 Jul 2021 @ 172510s 1d 23h 25m
12 Jul 2021 @ 180032m
12 Jul 2021 @ 172841m
12 Jul 2021 @ 164718m
12 Jul 2021 @ 16299s 18m
12 Jul 2021 @ 161111s 19m
12 Jul 2021 @ 155210s 36m
12 Jul 2021 @ 151610s 19m
12 Jul 2021 @ 145746m
12 Jul 2021 @ 141110s 32m

Interval Statistics

Interval Count100
Min11m
Max4d 19h 30m
Mean5h 1m
Median20m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
18390 12 Jul 2021 @ 1753 --- cb FYI. Constant has not put out pushes/overflow that reaches the monitor minutes before the eruption all day like it was earlier this spring.
18303 06 Jul 2021 @ 1853 --- WillBoekel reached first overflow
18304 06 Jul 2021 @ 1833 --- WillBoekel small bubble up and push
17091 14 May 2021 @ 1452 --- cb another push but pool dropped when Whirligig started to play.
17092 14 May 2021 @ 1425 14 May 2021 @ 1431 cb push with no eruption. 1435 pool dropped to expose its edges
17066 12 May 2021 @ 1730 --- MAB When Constant tries and fails it's hard to pin down the missed start time as roiling and waves begin 2 min before actual eruption fyi if the maths seem off. The 2 longer intervals later in the day did not include pushes- 2 of us were watching
17018 09 May 2021 @ 1412 09 May 2021 @ 1419 cb pool pushed with great overflow and nice 5" blooping/roiling boil. Sure looked like it would erupt but the pool crashed @ 1419.
17020 09 May 2021 @ 1334 09 May 2021 @ 1357 cb pool came up, the vent boiled up for ~8 minutes, good overflow down the runoff channel. We thought we would get another eruption but the pool crashed at 1356. During this period Whirligig side and shore vents briefly played twice.
17012 08 May 2021 @ 1515 08 May 2021 @ 1630 cb pool was high and was overflowing with blips over the vent. It blipped and blurped but never erupted. Pool dramatically dropped at 1534. refilling @ 1559. overflowing @ 1603 with 5" blips, 1607 pool dropping. 1608 pool crashed. 1620ish pool filling, 1630 pool overflowing with blips when I left.
16944 28 Apr 2021 @ 0936 28 Apr 2021 @ 1236 MAB Pool level is low - no outwash down the 'ramp' until just prior to eruptions or sometimes not til the eruption itself
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
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.