Last Known Eruption
17d 8h 9m ago

Latest Eruptions

Eruption DurationInterval
10 Oct 2021 @ 0852 ie6d 16h 56m
03 Oct 2021 @ 15563d 48m
30 Sep 2021 @ 150812s 6d 23h 3m
23 Sep 2021 @ 16053h 37m
23 Sep 2021 @ 12288m 6d 23h 32m
16 Sep 2021 @ 125615m 2d 18h 32m
13 Sep 2021 @ 1823:3716d 11m
28 Aug 2021 @ 18122d 23h 45m
25 Aug 2021 @ 18275h 37m
25 Aug 2021 @ 12507d 23h 50m
17 Aug 2021 @ 1300 A2h 55m
17 Aug 2021 @ 1005 A5d 21h 31m
11 Aug 2021 @ 123424m
11 Aug 2021 @ 121021h 8m
10 Aug 2021 @ 150255m
10 Aug 2021 @ 140715m
10 Aug 2021 @ 135236m
10 Aug 2021 @ 131619m
10 Aug 2021 @ 125718m
10 Aug 2021 @ 123919m
10 Aug 2021 @ 122023m
10 Aug 2021 @ 115721m
10 Aug 2021 @ 113625m
10 Aug 2021 @ 111135m
10 Aug 2021 @ 10369s 19h 50m
09 Aug 2021 @ 144618m
09 Aug 2021 @ 142818m
09 Aug 2021 @ 14101d 22h 56m
07 Aug 2021 @ 15145d 3h 4m
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

Interval Statistics

Interval Count100
Min11m
Max16d 11m
Mean20h 37m
Median21m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
20004 16 Oct 2021 @ 1200 16 Oct 2021 @ 1736 cb no eruption yet. pool was very quiet when i arrived. no blips or bloops, no convection waves. Finally saw small Blips at ~1500. 1600 some occational small blips & convection waves. Pool overflowing. Walked back this way after viewing evening Cistern.
19721 24 Sep 2021 @ 0830 --- Graham Pool low and rising, presumably post-eruptive. Reache'd overflow and held that level. 1205 had some waves on the pool. Waves continuous 1217. No eruption by 1700, so over 8.5h interval.
19484 11 Sep 2021 @ 1532 --- Graham Some. bubbling over the vent, first sign of life in almost 5 hours. 1640 still no eruption or push when I departed.
19387 08 Sep 2021 @ 0845 08 Sep 2021 @ 1530 CrisG no eruptions during this time
19255 01 Sep 2021 @ 1600 --- MAB No Constant eruptions 0900 to 1600 - slight increase in blips occasionally but no bigger cyclic pushes with pool dropping - steady overflow all day {pool was unchanged upon return from post-Whirligig breaks}
19115 27 Aug 2021 @ 1846 --- MAB arrived 0840 to a full pool - small blips with minuscule waves was the biggest action - as far as I could tell it never dropped after the mini pushes continuing to lightly flow thru Little Whirligig and more runoff in the other channel SE - pool was unchanged upon return from breaks - 10hrs+ with no eruption
19104 27 Aug 2021 @ 0752 27 Aug 2021 @ 0817 steve Constant is full and overflowing with no bubbling or rocking in the pool. Whirligig is just below overflow .
19078 25 Aug 2021 @ 1827 --- kc 1 burst of dirty water
19077 25 Aug 2021 @ 1250 --- kc 17 bursts of dirty water with good height over a span of 25 minutes. No eruptions at least 4 hours prior to eruption.
18999 22 Aug 2021 @ 1635 --- MAB except for a brief break I had eyes on Constant which did not erupt from 0900 to 1635. Upon returning from break pool level looked the same - no noticeable pushes w no eruption and the typical drop just ever so subtle drops - very windy and lighting was bad so it was difficult to watch overflow but it did vary
18887 10 Aug 2021 @ 1035 10 Aug 2021 @ 1502 cb All eruptions in this time frame are closed intervals. Constant eruptions today are inconsistent and varied a lot in height, burst count and intervals!
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.
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.