Last Known Eruption
34d 10h 7m ago

Latest Eruptions

Eruption DurationInterval
17 Mar 2024 @ 131211s 3m
17 Mar 2024 @ 130912s 2h 10m
17 Mar 2024 @ 105914s 137d 22h 26m
31 Oct 2023 @ 1232:323h 37m
31 Oct 2023 @ 08558d 16h 46m
22 Oct 2023 @ 1608:053m 27s 1h 44m 38s
22 Oct 2023 @ 1423:272m 51s 2d 3h 47m
20 Oct 2023 @ 103650m
20 Oct 2023 @ 094650m
20 Oct 2023 @ 085652m
20 Oct 2023 @ 080416h 51m
19 Oct 2023 @ 151342m
19 Oct 2023 @ 14311h 14m
19 Oct 2023 @ 13171d 21h 21m
17 Oct 2023 @ 1555:521h 48m 58s
17 Oct 2023 @ 1406:543h 20m 15s
17 Oct 2023 @ 1046:392h 3m 25s
17 Oct 2023 @ 0843:142d 15h 10m
14 Oct 2023 @ 1733 ie2h 54m
14 Oct 2023 @ 1438:413h 39m 56s
14 Oct 2023 @ 1058:454d 18h 14m
09 Oct 2023 @ 1644 ie1d 22h 33m
07 Oct 2023 @ 1811 ie6h 28m
07 Oct 2023 @ 1142:193h 17m
07 Oct 2023 @ 0825 ie1d 16h 55m
05 Oct 2023 @ 1530 A5d 3h 54m
30 Sep 2023 @ 1135:0321h 7m
29 Sep 2023 @ 14283h 47m
29 Sep 2023 @ 104120h 55m
28 Sep 2023 @ 13461d 22h 0m
26 Sep 2023 @ 1545:4610m 3h 24m 58s
26 Sep 2023 @ 1220:489m 1h 40m 0s
26 Sep 2023 @ 1040:481d 20h 40m
24 Sep 2023 @ 140010m 1h 26m
24 Sep 2023 @ 12342m 2h 9m
24 Sep 2023 @ 102510m 18h 12m
23 Sep 2023 @ 16132d 3h 39m
21 Sep 2023 @ 123421h 14m
20 Sep 2023 @ 1520<1m 3h 20m
20 Sep 2023 @ 12009m 21s 3h 24m
20 Sep 2023 @ 083614h 1m
19 Sep 2023 @ 18357h 58m
19 Sep 2023 @ 10377s 1d 17h 6m
17 Sep 2023 @ 17316h 15m
17 Sep 2023 @ 11169m 44s 2d 23h 20m
14 Sep 2023 @ 11561d 19h 18m
12 Sep 2023 @ 16381h 30m
12 Sep 2023 @ 15082h 16m
12 Sep 2023 @ 1252 ie1d 20h 29m
10 Sep 2023 @ 16231d 2h 41m
09 Sep 2023 @ 13421d 21h 38m
07 Sep 2023 @ 16043h 22m
07 Sep 2023 @ 12423h 14m
07 Sep 2023 @ 09282d 16h 48m
04 Sep 2023 @ 1640 A3d 5h 57m
01 Sep 2023 @ 10432d 16h 52m
29 Aug 2023 @ 17512h 48m
29 Aug 2023 @ 1503 ie20h 42m
28 Aug 2023 @ 18216d 3h 18m
22 Aug 2023 @ 15033d 3h 59m
19 Aug 2023 @ 11043d 20h 3m
15 Aug 2023 @ 15011h 13m
15 Aug 2023 @ 13482h 13m
15 Aug 2023 @ 11351h 18m
15 Aug 2023 @ 101717h 0m
14 Aug 2023 @ 17171d 7h 28m
13 Aug 2023 @ 0949 maj8 total eruptions a few seconds each7d 17h 4m
05 Aug 2023 @ 1645 maj8 total eruptions a few seconds each4d 22h 31m
31 Jul 2023 @ 18141h 32m
31 Jul 2023 @ 1641:122h 10m 41s
31 Jul 2023 @ 1430:311h 26m
31 Jul 2023 @ 1304 ie1h 30m
31 Jul 2023 @ 1133:011h 32m
31 Jul 2023 @ 1001 majMultiple eruptions a few seconds each1d 3h 44m
30 Jul 2023 @ 06174d 19h 58m
25 Jul 2023 @ 10191d 18h 19m
23 Jul 2023 @ 16001d 6h 52m
22 Jul 2023 @ 0908Multiple eruptions a few seconds each, 6 total16h 51m
21 Jul 2023 @ 1617 majA few seconds each, 7 total eruptions1d 8m
20 Jul 2023 @ 1608:5712m 2h 3m 52s
20 Jul 2023 @ 1405:052h 37m 10s
20 Jul 2023 @ 1127:5515m 2h 32m 42s
20 Jul 2023 @ 0855:134d 17h 13m
15 Jul 2023 @ 1542 maja few seconds each, 3 total eruptions1d 1h 42m
14 Jul 2023 @ 1400 maja few seconds each, 6 total eruptions2d 20h 32m
11 Jul 2023 @ 1728 ie4d 21h 47m
06 Jul 2023 @ 19411d 23h 54m
04 Jul 2023 @ 1946:382h 21m
04 Jul 2023 @ 1725 ie4h 39m
04 Jul 2023 @ 1245:028d 54m
26 Jun 2023 @ 115112m 23h 33m
25 Jun 2023 @ 12181d 23h 18m
23 Jun 2023 @ 13003d 37m
20 Jun 2023 @ 122315m 7s 2d 21h 49m
17 Jun 2023 @ 1433:125h 20m 22s
17 Jun 2023 @ 0912:502d 18h 39m
14 Jun 2023 @ 14334d 1h 8m
10 Jun 2023 @ 1324:3813m 18h 59m
09 Jun 2023 @ 182517m 6h 1m
09 Jun 2023 @ 122415m 9d 22h 7m

Interval Statistics

Interval Count100
Min3m
Max137d 22h 26m
Mean2d 22h 4m
Median18h 35m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
34236 19 Apr 2024 @ 0913 19 Apr 2024 @ 1115 MAB in overflow - tiny blips some which looked promising but too windy and steamy to tell if they were periodic on a "schedule" or to discern if pool slightly dropped after the better ones - water entering the pool from elsewhere in two places
34126 17 Mar 2024 @ 1204 17 Mar 2024 @ 1207 Mkeller Tried to erupt. Heavy waves and bubbling but couldn’t quite make it happen
33959 30 Jan 2024 @ 1400 --- JR No observed eruptions for a few months now. Colors are predominantly orange/rust and green around the feature.
31723 29 Nov 2023 @ 1005 --- JR Heard a large splash through the steam from the museum, could not confirm visually but it sounded like Constant.
29057 22 Oct 2023 @ 1900 --- SantaFe108 Abandoning. Interval nearing 3 hours and it's dark and cold.
29051 22 Oct 2023 @ 1310 --- SantaFe108 In overflow on arrival, convection over the vent.
28748 12 Oct 2023 @ 1700 --- JR Overflowing. Bubbles in middle for several minutes made it look like maybe something was coming.
28590 30 Sep 2023 @ 0823 --- MAB almost full upon arrival - dropped within 10m - missed one by 'that much'
28544 29 Sep 2023 @ 1148 --- User34 First overflow
28296 17 Sep 2023 @ 0900 --- SantaFe108 Overflow began around this time.
27837 28 Aug 2023 @ 1555 --- cb pool WELL below by ~1' exposing small rock in the center of the pool. my quess is 1500A for a multi burst eruption.
27328 30 Jul 2023 @ 0702 --- EmilyW Full and overflowing. No waves
27323 30 Jul 2023 @ 0615 --- ypcaribou Waves on Constant
27321 30 Jul 2023 @ 0543 --- ypcaribou pool full with bubbling to east, slight overflow
26683 26 Jun 2023 @ 1151 --- ajrubi Series of 11 individual eruptions recurring at intervals of about 1 minute. Durations were about 10 seconds, height reached about 30 feet. Eruptions were preceeded by about 10-20 seconds of bubbling preplay in the pool.
28947 16 Jun 2023 @ 1000 --- research-mab (no time given } 6/16 Constant was erupting every few minutes this morning
26315 14 Jun 2023 @ 1300 --- CrisG pool in overflow, watch begins.
26314 14 Jun 2023 @ 1015 --- CrisG not in overflow. moving on
26230 10 Jun 2023 @ 1130 --- CrisG first look from intersection pool below overflow at 1130. Pool slowly rose as I was sitting at the bench, with the rocks being covered by 1230.
26050 05 Jun 2023 @ 0900 05 Jun 2023 @ 1100 Graham Pool full and overflowing, but no pushes or eruption.
25918 30 May 2023 @ 1910 --- MAB Last eyes on Constant @1910 so this interval pushing 5 hours
25895 29 May 2023 @ 1120 29 May 2023 @ 1457 Graham Pool well down. 1155 pool just at overflow. No attempt to erupt. 1400 first sign of a bloop over the vent.
25053 27 Feb 2023 @ 1401 --- MAB low upon arrival - we missed a push coming down from Congress
24986 15 Dec 2022 @ 1253 15 Dec 2022 @ 1301 Etimes-mab NOTE: Of interest, small spikes {1253 and 1301} in an unusual spot in the Constant cycle, noted here for the record and ease of finding this date again if more of these are seen. Link to temp graph: https://geysertimes.org/datalogger/analysis/loggerChart.php?g=79&l=22&t1=1673802000000&t2=1673823600000
24586 30 Oct 2022 @ 1839 --- MAB Constant had one push no eruption and dropped - no reason to stay for another after the Gig minor
24525 29 Oct 2022 @ 1815 29 Oct 2022 @ 1840 MAB Two failed attempts - 1815 & 1840 was visible roil times both followed by pool drop
24375 14 Oct 2022 @ 1833 14 Oct 2022 @ 1923 MAB three push no eruptions - times pool seen fully dropped 1833 1900 & 1923 - left Porcelain bench 1942 only to sit in a bison jam in Elk Park in da dark
24296 07 Oct 2022 @ 1225 --- DanS Bloops but no eruption
24029 23 Sep 2022 @ 1327 --- CrisG weaker push. going on a walk about to warm up.
24028 23 Sep 2022 @ 1238 --- CrisG push but no eruption
24027 23 Sep 2022 @ 1111 --- CrisG push but no eruption
24026 23 Sep 2022 @ 1028 --- CrisG push but no eruption
22748 20 Jul 2022 @ 2006 20 Jul 2022 @ 2011 nails 1 quick burst to about 2 feet. Pool stayed high and bubbling continued for 5 minutes and then water level dropped.
22621 16 Jul 2022 @ 1016 16 Jul 2022 @ 1025 cb push, pool stayed high, pool dropped. no eruption
22606 15 Jul 2022 @ 1640 15 Jul 2022 @ 1648 cb push, bubbled, no eruption. again chased away by lightning!
22604 15 Jul 2022 @ 1603 15 Jul 2022 @ 1610 cb push, no eruption
22603 15 Jul 2022 @ 1436 --- cb pool pushed, had one small splash, pool bubbled a bit then fell. no eruption.
22538 13 Jul 2022 @ 1015 --- cb push, bubbles, pool dropped. no eruption.
22537 13 Jul 2022 @ 0929 --- cb push no eruption
22382 07 Jul 2022 @ 1024 --- steve Time approximate. Filled with good overflow and bubbling but no eruption.
22379 07 Jul 2022 @ 0925 --- steve The time is approximate but Constant filled, good overflow and bubbling, but no eruption
22292 02 Jul 2022 @ 1709 --- cb There are 4 active bubblers in Constant's main runoff channel that flows past the living thermometer sign. 1st one from the pool is in the narrow neck of the channel, oblong in shape, 2" long and bubbling to 1". Other 3 are in the middle of the wide area, 1st of these vents from Constants pool is 2" in diameter and blipping to 2". Other 2 are smaller in diameter with a 1/2" bubble. There is a active Frying pan type sizzler between the runoff channel and the Constant bench, about 1' from the edge of the water in the dry pebbly area, that cycles water and sizzles/flashes.
21728 04 Jun 2022 @ 1408 04 Jun 2022 @ 1416 cb Tried to duel with Whirligig. blips & overflow started @ 1408, 6" roiling bloops st 1409, pool dropped @ 1416 exposing 10" of red rim. no eruption
21727 04 Jun 2022 @ 1319 04 Jun 2022 @ 1326 cb blips, overflow, waves, pool drops below overflow ~1' exposing red rim. no eruption
21739 02 Jun 2022 @ 1518 --- CP A period of very light boiling to 1523.
21603 31 May 2022 @ 1333 31 May 2022 @ 1340 cb again same play as previous notes. copious overflow, convection waves, blips, pool drops, no eruption.
21602 31 May 2022 @ 1311 31 May 2022 @ 1317 cb same as previous notes. push, convection waves, blips, copious overflow. pool drops, no eruption.
21601 31 May 2022 @ 1246 31 May 2022 @ 1252 cb same as last note. push, waves, copious overflow, blips, pool drops, no eruption.
21600 31 May 2022 @ 1224 31 May 2022 @ 1230 cb push, convection waves, 4" blips, copious overflow, pool dropped @ 1229, no eruption
21620 31 May 2022 @ 1050 --- novakg Push with a small boil from the center. Pool dropped after the push. It may be worth noting the snowy, cold weather the day before and, after the snow passed, rain.
21497 25 May 2022 @ 1144 --- Graham Pushed
21495 25 May 2022 @ 1103 --- Graham Pushed
21492 25 May 2022 @ 1023 --- Graham Pushed
21490 25 May 2022 @ 1000 --- Graham Pushed.
21488 25 May 2022 @ 0934 --- Graham Pushed
21487 25 May 2022 @ 0908 --- Graham Pushed.
21116 27 Apr 2022 @ 1647 --- DanS Attempt at start, then aborted. Pool dropped.
20289 04 Nov 2021 @ 1650 --- MAB post eruptive
20226 30 Oct 2021 @ 1143 --- cb pool is low. edges exposed. came up and was blipping when we left the area.
20170 28 Oct 2021 @ 1522 --- MAB nothing further out of Constant by 1522
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.
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.