Last Known Eruption
14d 6h 47m ago

Latest Eruptions

Eruption DurationInterval
16 Apr 2025 @ 1814 wc14m
16 Apr 2025 @ 1800 wc1h 25m
16 Apr 2025 @ 1635 wc4h 58m
16 Apr 2025 @ 1137 wc11m
16 Apr 2025 @ 1126 ie wc11m
16 Apr 2025 @ 1115 ie wc51m
16 Apr 2025 @ 1024 wc3h 5m
16 Apr 2025 @ 0719 wc15m
16 Apr 2025 @ 0704 wc46m
16 Apr 2025 @ 0618 wc1h 52m
16 Apr 2025 @ 0426 wc27m
16 Apr 2025 @ 0359 wc21m
16 Apr 2025 @ 0338 wc9m
16 Apr 2025 @ 0329 wc17m
16 Apr 2025 @ 0312 wc25m
16 Apr 2025 @ 0247 wc32m
16 Apr 2025 @ 0215 wc6h 20m
15 Apr 2025 @ 1955 wc9m
15 Apr 2025 @ 1946 wc11m
15 Apr 2025 @ 1935 wc12m
15 Apr 2025 @ 1923 wc54m
15 Apr 2025 @ 1829 wc31m
15 Apr 2025 @ 1758 wc2h 18m
15 Apr 2025 @ 1540 wc13m
15 Apr 2025 @ 1527 wc15m
15 Apr 2025 @ 1512 wc40m
15 Apr 2025 @ 1432 wc1h 18m
15 Apr 2025 @ 1314 wc2h 29m
15 Apr 2025 @ 1045 wc43m
15 Apr 2025 @ 1002 wc1h 16m
15 Apr 2025 @ 0846 wc18m
15 Apr 2025 @ 0828 wc12m
15 Apr 2025 @ 0816 wc5h 26m
15 Apr 2025 @ 0250 wc15m
15 Apr 2025 @ 0235 wc5h 34m
14 Apr 2025 @ 2101 wc42m
14 Apr 2025 @ 2019 wc2h 29m
14 Apr 2025 @ 1750 wc22m
14 Apr 2025 @ 1728 ns wc4h 27m
14 Apr 2025 @ 1301 wc2h 41m
14 Apr 2025 @ 1020 ie wc7h 36m
14 Apr 2025 @ 0244 wc3h 37m
13 Apr 2025 @ 2307 wc13m
13 Apr 2025 @ 2254 wc9h 7m
13 Apr 2025 @ 1347 wc13m
13 Apr 2025 @ 1334 wc14m
13 Apr 2025 @ 1320 wc25m
13 Apr 2025 @ 1255 wc4h 34m
13 Apr 2025 @ 0821 wc3h 11m
13 Apr 2025 @ 0510 wc23m
13 Apr 2025 @ 0447 wc2h 54m
13 Apr 2025 @ 0153 wc15m
13 Apr 2025 @ 0138 wc2h 9m
12 Apr 2025 @ 2329 wc14m
12 Apr 2025 @ 2315 wc4h 47m
12 Apr 2025 @ 1828 wc5h 13m
12 Apr 2025 @ 1315 wc2h 17m
12 Apr 2025 @ 1058 wc4h 19m
12 Apr 2025 @ 0639 wc15m
12 Apr 2025 @ 0624 wc16m
12 Apr 2025 @ 0608 wc4h 34m
12 Apr 2025 @ 0134 wc11m
12 Apr 2025 @ 0123 wc2h 30m
11 Apr 2025 @ 2253 wc16m
11 Apr 2025 @ 2237 wc3h 45m
11 Apr 2025 @ 1852 wc46m
11 Apr 2025 @ 1806 wc5h 3m
11 Apr 2025 @ 1303 ns wc3h 20m
11 Apr 2025 @ 0943 wc2h 39m
11 Apr 2025 @ 0704 wc1y 333d 17h 30m
13 May 2023 @ 1334 wc1y 305d 56m
12 Jul 2021 @ 1238 wc~47s 1h 27m
12 Jul 2021 @ 11111m 5s 13m
12 Jul 2021 @ 10581m 6s 11m
12 Jul 2021 @ 10471m 2s 9m
12 Jul 2021 @ 103856s 10m
12 Jul 2021 @ 10282h 55m
12 Jul 2021 @ 07331m 17s 10m
12 Jul 2021 @ 07231m 5s 9m
12 Jul 2021 @ 07141m 9s 16m
12 Jul 2021 @ 06581m 8s 11h 50m
11 Jul 2021 @ 19081m 10s 13m
11 Jul 2021 @ 18551m 17s 3h 31m
11 Jul 2021 @ 152414m
11 Jul 2021 @ 151015m
11 Jul 2021 @ 14551m 12s 2h 31m
11 Jul 2021 @ 122458s 39m
11 Jul 2021 @ 11451m1015m
11 Jul 2021 @ 11301m 3s 9m
11 Jul 2021 @ 11211m 12s 11m
11 Jul 2021 @ 111056s 10m
11 Jul 2021 @ 11001m 9s 15m
11 Jul 2021 @ 1045 ini1m 10s 3h 48m
11 Jul 2021 @ 06571m 10s 12m
11 Jul 2021 @ 06451m 1s 11h 53m
10 Jul 2021 @ 185253s 9m
10 Jul 2021 @ 1843 ie49m
10 Jul 2021 @ 17546h 26m
10 Jul 2021 @ 11281m 3s 16m
10 Jul 2021 @ 11121m 12s 15m

Interval Statistics

Interval Count100
Min9m
Max1y 333d 17h 30m
Mean13d 18h 18m
Median35m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
38712 30 Apr 2025 @ 1125 --- Graham An inch below overflow
38706 29 Apr 2025 @ 1746 --- Dan A Below overflow
38705 29 Apr 2025 @ 1655 --- Graham Close to overflow. 1703 overflow just started in left channel. 1725 leaking out the back
38648 26 Apr 2025 @ 2009 --- Ajw Splashing with heights ranging from 3” to 8”.
38495 19 Apr 2025 @ 1430 --- rayceanderson Almost reached overflow before dropping at the same time Sawmill started to fill
38457 18 Apr 2025 @ 0933 --- Graham Water 6 inches down. Group appears to be recovering from a drain.
38444 11 Apr 2025 @ 1637 --- Tara Bubbling constantly in center, overflowing out of both channels
38301 24 Feb 2025 @ 1013 --- K.Cooper almost in ovfl.
36125 26 Jul 2024 @ 1956 --- Dan A Highest I have see it all year, Pool is In overflow
35863 12 Jul 2024 @ 1215 --- Ben VL Water level very high, less than a foot from overflow.
35391 20 Jun 2024 @ 1750 --- Craigmon99 Coming up
35359 19 Jun 2024 @ 1618 --- Craigmon99 7 inches below overflow
35357 19 Jun 2024 @ 1348 --- Craigmon99 Rising
35250 16 Jun 2024 @ 1337 --- Craigmon99 6 inches higher than last observation. Blue color now apparent
35248 16 Jun 2024 @ 1310 --- Craigmon99 Bubbling/upwelling around inner tube
35016 08 Jun 2024 @ 1536 --- JSJ Low pool splashing.
34473 07 May 2024 @ 1032 --- Brando 2 feet below.overflow, gently boiling
34461 05 May 2024 @ 1940 --- Ajw maybe not an eruption, but the bowl is fuller than usual and water is splashing from 3 to 12 in high continuously. As I watched for three more minutes the bowl continued to fill and the splashes became taller. Perhaps it will become an eruption after I leave.
34341 25 Apr 2024 @ 1805 --- DanS Water rising in cone. Bubbling and low splashing.
34315 22 Apr 2024 @ 2012 --- minissa Although low, there seems to be a pulsatile or percussive quality to some of the steam that makes us wonder if something is happening. Steam "cloud" doesn't look quite wide enough to fill width of Churn's basin, though.
34289 21 Apr 2024 @ 1012 --- SantaFe108 No longer overflowing. Leaving Penta.
34282 21 Apr 2024 @ 0913 --- SantaFe108 Bubbling and overflowing out of the channel closest to the boardwalk.
34018 11 Feb 2024 @ 0934 --- Pholli water high and boiling actively again
34013 09 Feb 2024 @ 0940 --- Pholli quite high, and bubbling. no runoff though. Sawmill was off https://www.flickr.com/photos/199957145@N06/53519669004/in/dateposted-public/
34004 07 Feb 2024 @ 0914 --- mhvogel Water level down 2-3 feet with small splashes every few seconds.
33957 30 Jan 2024 @ 1412 --- aferrara still blue water, about a foot below overflow
28778 14 Oct 2023 @ 1727 --- DanS Small splashes from low pool
34005 06 Oct 2023 @ 1021 --- Delta4Heavy85 Small (maybe max 6") splashes from about a foot below overflow
28581 30 Sep 2023 @ 1244 --- DanS Low blooping boil
26900 08 Jul 2023 @ 1011 --- Brando Water 2 feet low but sloshing
26764 01 Jul 2023 @ 1251 --- Kyle hat floating in the crater
26412 17 Jun 2023 @ 1947 --- Craigmon99 Filling. Sawmill is ofd
26337 15 Jun 2023 @ 1113 --- Craigmon99 Bursting at depth
25504 17 May 2023 @ 2022 --- Ajw Heavy boiling. Pool filling slowly.
25255 27 Apr 2023 @ 1330 27 Apr 2023 @ 1410 DanS Pool rose to overflow during long Tardy eruption.
25239 24 Apr 2023 @ 1819 --- DanS 3/4 full and boiling
25219 23 Apr 2023 @ 1045 --- aferrara in overflow, barely
25216 23 Apr 2023 @ 1012 --- aferrara simmering, about two inches below overflow and rising slowly
25204 22 Apr 2023 @ 1000 --- DanS Churning low in crater
24910 15 Jan 2023 @ 1629 --- Graham Some melting on rear runoff channel.
24242 05 Oct 2022 @ 1327 --- DanS Churning and splashing Water level low.
24233 05 Oct 2022 @ 1117 --- DanS Water has dropped out of sight.
24009 22 Sep 2022 @ 1930 --- CrisG low splashing observed. pool remains out of sight
23863 16 Sep 2022 @ 1410 --- CP Water level higher than at 1255. Vigorous boil.
23860 16 Sep 2022 @ 1255 --- CP Water level low. Vigorous boil.
23840 15 Sep 2022 @ 1317 --- CP No water visible.
23839 15 Sep 2022 @ 1219 --- CP Low water level but vigorous boil.
23697 10 Sep 2022 @ 0052 --- Dave W Splashing up to 2 feet high from a low pool level.
23579 05 Sep 2022 @ 1121 --- User34 Water out of sight
25199 25 Aug 2022 @ 1759 --- Craigmon99 Attempting to start. Notably there are bits of white sinter all over
22611 16 Jul 2022 @ 1142 --- Brando Down 3 feet from top. Barely any water visible.
22126 25 Jun 2022 @ 1923 --- annelies8 Splashing up to rim from a low pool level
21867 09 Jun 2022 @ 1254 --- Forestbewithyou Calm. No boiling
21863 09 Jun 2022 @ 0923 --- aferrara Boiling
21524 27 May 2022 @ 0849 --- TSBryan splashing 1 to 2 feet high from low pool level
21304 16 May 2022 @ 1028 --- Brando Completely empty
21081 25 Apr 2022 @ 1957 --- DanS From low pool just started boiling, splashing, churning. Was quiet before Grand while Sawmill was on.
20985 15 Apr 2022 @ 1745 --- mhreed Snow encroaching on crater.
20883 14 Mar 2022 @ 0921 --- mhvogel Saw water rise to almost the rim and then began to boil. I will erase my previous post.
20736 20 Jan 2022 @ 0918 --- mhvogel Boiling and water rising in churn. Water level 4-5 inches below rim. Steam from sawmill blocking my view.
20705 16 Jan 2022 @ 1025 --- aferrara Splashing and churning. Full to ~1.5-2' below overflow. Splashes frequent, not higher than rim.
20674 11 Jan 2022 @ 1600 --- Graham Snowed in, inactive.
20213 30 Oct 2021 @ 0903 --- Brando Down at least a foot with gentle boiling
19973 14 Oct 2021 @ 0928 --- aferrara ~4" below overflow, boiling gently
18403 13 Jul 2021 @ 0635 --- SteveO Water level low boiling and splashing.
18377 12 Jul 2021 @ 0636 --- SteveO Water level down about 6 inches.
18355 11 Jul 2021 @ 1146 11 Jul 2021 @ 1221 SteveO After 1145 eruption Churn dropped about 6 inches. Level stagnant till about 1200. 1200 to 1215 on a slow rise. 1216 to 1221 big in crease in bubbling up and convection over the vent, fast rise in level.
18352 11 Jul 2021 @ 0950 --- User34 Down 6 inches
18351 11 Jul 2021 @ 0949 --- SteveO Churn is down about 6 inches at the end of Sawmil 0949.
18340 10 Jul 2021 @ 1124 --- SteveO Attempted to erupt, 3 big splashes.
18313 08 Jul 2021 @ 1747 --- SteveO At the start of Tardy at 1747 Churn was down about an inch. After the end of 1815 Tardy Churn was down about 5 inches. Start of overflow 1909.
18302 07 Jul 2021 @ 0743 --- SteveO Had a couple of splashes
18292 06 Jul 2021 @ 1132 --- User34 First overflow
18290 06 Jul 2021 @ 1120 --- User34 First overflow
18271 05 Jul 2021 @ 1138 --- Micah Kipple Another attempt at an eruption with a single burst up to 3' and then crash
18272 05 Jul 2021 @ 1134 --- Micah Kipple Put out a single burst 2-3 feet and died.
18228 01 Jul 2021 @ 1741 --- Graham Almost erupted.
18227 01 Jul 2021 @ 1733 --- Graham Splashed
18226 01 Jul 2021 @ 1724 --- Graham Big push and splashes.
18225 01 Jul 2021 @ 1719 --- Graham Splashed
18223 01 Jul 2021 @ 1632 --- Graham Splashed. Bigger one 1633.
18221 01 Jul 2021 @ 1305 --- Graham Splashed.
18216 01 Jul 2021 @ 0825 --- Graham Splashed.
18211 30 Jun 2021 @ 2029 --- Graham Splashed
18064 23 Jun 2021 @ 1640 --- ldgordon Noticed churn began to drop.
18058 23 Jun 2021 @ 0902 --- Graham Overflowing in all 3 channels for quite a while now
18000 22 Jun 2021 @ 0800 --- Graham High with runoff in all 3 channels.
17972 21 Jun 2021 @ 1602 --- K.Cooper About 6in below rim and bubbling
17941 20 Jun 2021 @ 1020 --- User34 Below overflow, but third runoff channel dry. Was full just prior
17886 18 Jun 2021 @ 1234 --- Craigmon99 Was high recently but only 1 runoff channel has water flowing. The rest are damp
17835 15 Jun 2021 @ 1615 --- Craigmon99 Higher with spasmodic off but not at overflow.
17824 15 Jun 2021 @ 1337 --- Craigmon99 Has been lowering consistently as spasmodic started
17814 15 Jun 2021 @ 1309 --- Craigmon99 All 3 runoff channels wet. Pool is high
17780 14 Jun 2021 @ 1724 --- Craigmon99 Went into overflow as spasmodic shutoff and sawmill began to lower. Pool continued to get higher and boils were more vigorous. Pool began to lower and go below full overflow as sawmill recovered water levels and spasmodic turned on.
17663 11 Jun 2021 @ 0925 --- Graham Water dropped. Some extra water in runoff. Didn't notice an eruption while in the group. In overflow by 0932. Spasmodic still ie.
17247 29 May 2021 @ 1250 --- Micah Kipple Foot high boil. Attempted start
14185 13 May 2020 @ 0833 13 May 2020 @ 0835 JarnoO (wc) late 0833 to early 0835. Looked very promising with dense steam rising behind boardwalk, perhaps on a hair-trigger. Steam began decreasing after ±20s (early 0834), with early 0835 back at ~regular steam output.
14184 10 May 2020 @ 1607 --- JarnoO (wc) Became very steamy. Steam decreased after about 30 to 45 seconds. Did not see any splashing, so may have been boiling followed by a drop.
14165 07 Apr 2020 @ 1820 07 Apr 2020 @ 1823 JarnoO (wc) Had some good steaming, with what appeared to be a steamy runoff. Had a few bursts of steam (note: not an eruption) between 1821 and 1822. Thereafter steam decreased.
13198 12 Aug 2019 @ 1817 --- minissa Increased boiling and runoff
EntrySourceLinkComment
25 May 2020 @ 0910 JoeN https://youtu.be/ugikZrIchok churn video
24 May 2020 @ 0950 JoeN https://youtu.be/2lx5Yc1_7P4 churn video
08 May 2020 @ 1516 JoeN https://youtu.be/_d4JJx22-Ys Churn Video
17 Mar 2020 @ 0921 ltgangi https://youtu.be/Glaq3w3ROBU churn eruption
13 Mar 2020 @ 1525 ltgangi https://youtu.be/qlON00EcMdI Churn eruption 15:25 and 15:09
13 Mar 2020 @ 1525 JarnoO https://www.youtube.com/watch?v=qlON00EcMdI This video shows both this and the 1509 Churn eruptions. 1525 is the second part of the video.
13 Mar 2020 @ 1509 JarnoO https://www.youtube.com/watch?v=qlON00EcMdI This video shows both this and the 1525 Churn eruptions. 1509 is the first part of the video.
15 Nov 2019 @ 1147 ltgangi https://youtu.be/OmB_eZtftRI Churn eruption
28 Sep 2019 @ 0809 CraigC https://www.youtube.com/watch?v=ZBX5O4xMBmU&feature=youtu.be thanks JoeN for video capture and youtube upload
08 Aug 2019 @ 1355 JSJ https://www.youtube.com/watch?v=CXlkWnC6uyg#t=12m45s Clip 38 of this video compilation (time stamp 12:45 to 14:42) shows Churn Geyser's 1:55 to 1:56 PM eruption on 8 August 2019.
08 Aug 2019 @ 1331 JSJ https://www.youtube.com/watch?v=CXlkWnC6uyg#t=10m50s Clips 30-32 of this video compilation (time stamp 10:50 to 11:34) show Churn Geyser's 1:31 to 1:32 PM eruption on 8 August 2019.
14 Jun 1993 @ 1036 JSJ https://www.youtube.com/watch?v=cfQFzQBBvu8 Video by David Schwarz of Churn Geyser's late morning eruption on 14 June 1993.
25 Jun 1993 @ 1729 JSJ https://www.youtube.com/watch?v=W2b1-DdYc1k Video by David Schwarz of Churn Geyser's late afternoon eruption on 25 June 1993.
27 Jul 2013 @ 1135 JSJ https://www.youtube.com/watch?v=rFhMMRG9fo4 Video by Will Boekel of what is presumably the 11:35 AM eruption of Churn Geyser on 27 July 2013.
08 Jul 2012 @ 1444 kcmule http://tinyurl.com/CH1444-07082012
21 Apr 2012 @ 1456 kcmule http://tinyurl.com/CH1456-04210212
16 Apr 2012 @ 1616 kcmule http://tinyurl.com/CH1616-04162012
31 Mar 2012 @ 1510 kcmule http://tinyurl.com/CH1510-03312012
Baseline does not exist.