Last Known Eruption
96d 12h 32m ago

Latest Eruptions

Eruption DurationInterval
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
10 Jul 2021 @ 10571m 15s 12m
10 Jul 2021 @ 10451m 7s 26m
10 Jul 2021 @ 10191m 1s 11m
10 Jul 2021 @ 10081m 8s 8m
10 Jul 2021 @ 100057s 15m
10 Jul 2021 @ 0945 ie3h 47m
10 Jul 2021 @ 055817h 42m
09 Jul 2021 @ 1216~1m 15m
09 Jul 2021 @ 12011m 3h 56m
09 Jul 2021 @ 08051m 5s 10m
09 Jul 2021 @ 075555m
09 Jul 2021 @ 0700 ie wc11h 34m
08 Jul 2021 @ 1926 ini54s 11h 12m
08 Jul 2021 @ 08141m 8s 13m
08 Jul 2021 @ 08011m 10s 13m
08 Jul 2021 @ 07481m 11s 12m
08 Jul 2021 @ 07361m 10s 39m
08 Jul 2021 @ 0657 ini11h 52m
07 Jul 2021 @ 190517m
07 Jul 2021 @ 184811m
07 Jul 2021 @ 18371h 11m
07 Jul 2021 @ 1726 wc~43s 12m
07 Jul 2021 @ 1714 wc4h 18m
07 Jul 2021 @ 125612m
07 Jul 2021 @ 124422m
07 Jul 2021 @ 12224h 26m
07 Jul 2021 @ 075622m
07 Jul 2021 @ 073411m
07 Jul 2021 @ 072310m
07 Jul 2021 @ 071312m
07 Jul 2021 @ 070115h 40m
06 Jul 2021 @ 1521 wc~41s 3h 15m
06 Jul 2021 @ 120616m
06 Jul 2021 @ 11501m 15m
06 Jul 2021 @ 11351m 7s 11m
06 Jul 2021 @ 11241m 3s 11m
06 Jul 2021 @ 111355s 3h 23m
06 Jul 2021 @ 0750 wc~42s 10m
06 Jul 2021 @ 0740 wc~48s 1h 1m
06 Jul 2021 @ 063914h 6m
05 Jul 2021 @ 16331m 6s 10m
05 Jul 2021 @ 1623 ini58s 3h 38m
05 Jul 2021 @ 1245 wc~1m 8s 21m
05 Jul 2021 @ 122415m
05 Jul 2021 @ 120951m
05 Jul 2021 @ 111810m
05 Jul 2021 @ 110812m
05 Jul 2021 @ 10563h 8m
05 Jul 2021 @ 0748 wc>1m 4s 14m
05 Jul 2021 @ 0734 wc~1m 2s 1d 12h 21m
03 Jul 2021 @ 191322m
03 Jul 2021 @ 1851 ns4h 2m
03 Jul 2021 @ 1449 wc~49s 16m
03 Jul 2021 @ 1433 wc~47s 11m
03 Jul 2021 @ 1422 wc~44s 20h 7m
02 Jul 2021 @ 181510m
02 Jul 2021 @ 1805 ini7h 57m
02 Jul 2021 @ 1008 ns wc1h 10m
02 Jul 2021 @ 0858 ie16h 11m
01 Jul 2021 @ 164712m
01 Jul 2021 @ 1635 ini3h 16m
01 Jul 2021 @ 1319 ini3h 54m
01 Jul 2021 @ 092512m
01 Jul 2021 @ 0913 ini42m
01 Jul 2021 @ 0831 ini11h 58m
30 Jun 2021 @ 2033 ini3h 55m
30 Jun 2021 @ 1638 wc~54s 4h 37m
30 Jun 2021 @ 1201 wc~1m 0s 4h 4m
30 Jun 2021 @ 0757 wc~1m 16s 55m
30 Jun 2021 @ 0702 wc15h 14m
29 Jun 2021 @ 154813m

Interval Statistics

Interval Count100
Min8m
Max1d 12h 21m
Mean3h 5m
Median16m
Initial-to-Initial
Interval Count9
Min42m
Max2d 22h 18m
Mean1d 4h 14m
Median12h 29m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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
13195 12 Aug 2019 @ 1808 --- minissa Gentle boiling, water into 3rd runoff channwl
13111 08 Aug 2019 @ 1330 08 Aug 2019 @ 1607 JSJ Increase in bubbling/roiling intensity at 1330. Preplay splashing at 1331. First eruption in series from 1331 to 1332. Lower water level after eruption & overflow ceased. Spasmodic was below overflow at this time. Churn’s water level was higher again at 1339, with overflow down the left channel resuming at 1340. Brief, moderately vigorous roiling at 1342, 1344 (longer), 1346 (twice), and 1348. Decent roiling throughout these times, for the most part. Single splash at 1348. Overflow going down the middle and right channels at 1352. Decent roiling, almost-splashes, and splashes at 1352. Small preplay splashes at 1355. Second eruption in series from 1355 to 1356. Pool’s water level lower after eruption - below overflow. Spasmodic still below overflow at 1401. Churn’s water level has risen again by 1404, but not to overflow yet. Moderately decent, quiet roiling at 1406. Overflow started at 1408. Well developed overflowing down the left channel at 1415. Pool’s roiling/bubbling is milder (it has been). Small splash at 1416. Left overflow channel still active at 1607 & some water is present in the middle and right overflow channels (has been).
13096 07 Aug 2019 @ 1527 07 Aug 2019 @ 1612 JSJ Bubbling and roiling increased noticeably before 1527. Water draining into middle runoff channel, then the right runoff channel. Looked like it wanted to erupt but never did. 1612 - bubbling and roiling had already calmed down, with runoff stopped in middle and right channels, but still damp.
12868 29 Jul 2019 @ 1052 --- rbwhitaker Second runoff is wet but currently not enough overflow to be going down anything but the main runoff channel
12828 28 Jul 2019 @ 0658 --- rbwhitaker Gently bubbling. Second and third runoff channels look wet from runoff, but it's not flowing out that way right now.
12538 20 Jul 2019 @ 0826 --- User34 Another abort
12533 20 Jul 2019 @ 0814 --- User34 Aborted eruption
12504 17 Jul 2019 @ 1201 --- ldgordon Water level almost an inch below overflow, possibly post eruptive
11990 27 Jun 2019 @ 1523 27 Jun 2019 @ 1555 ldgordon Was hot but did not make an attempt to erupt and eventually calmed down.
11977 26 Jun 2019 @ 1914 26 Jun 2019 @ 1926 ldgordon Was hot and flowing into third runoff, made a foot high splash at 1926 and lost it's energy
11939 24 Jun 2019 @ 1922 24 Jun 2019 @ 1958 ldgordon Began to boil and wet third runoff channel, small splash at 1953 and eruption at 1958.
11934 24 Jun 2019 @ 1100 24 Jun 2019 @ 1140 William 3rd runoff channel wet. looks hot with constant center boil and waves bouncing off sides of pool.
11915 22 Jun 2019 @ 1924 --- ldgordon Surged and amply lost it's heat.
11914 22 Jun 2019 @ 1642 --- ldgordon Third runoff wet, pool still full
11862 17 Jun 2019 @ 1906 17 Jun 2019 @ 1930 ldgordon Hot and flowing in all 3 runoff channels, no attempt at eruption was made
11837 16 Jun 2019 @ 2009 --- ldgordon Fully refilled
11815 15 Jun 2019 @ 2012 --- ldgordon Splashed about a foot high
11814 15 Jun 2019 @ 2006 --- ldgordon Third runoff has just started to be getting wet, the pool appears to be hot.
11757 12 Jun 2019 @ 2307 --- ldgordon All three runoff channels are wet, water calm
11605 06 Jun 2019 @ 1830 --- ldgordon Splashed about a foot high twice, possible delayed eruption.
11604 06 Jun 2019 @ 1815 --- ldgordon Wet in all three runoff channels with strong overflow
11597 06 Jun 2019 @ 0755 --- Graham All 3 runoff channels are wet or damp. Looks like damp patches around the pool which indicate there may have been an eruption earlier this norning.
11582 04 Jun 2019 @ 1201 04 Jun 2019 @ 1958 JSJ No eruptions. Full pool. In overflow, using southwest runoff channel (= on the left). No overflow in the northwest runoff channel (= on the right). Middle runoff channel with trickling of overflow. Light bubbling over vent. Some full-pool, very slight pulsing/rocking.
11540 03 Jun 2019 @ 0956 --- ldgordon Pool slightly down, maybe an inch
11516 02 Jun 2019 @ 1940 --- ldgordon Recovered and overflowing
11514 02 Jun 2019 @ 1843 --- ldgordon Heavily pulsed and splashed about a foot high
11474 01 Jun 2019 @ 1438 --- User34 Aborted eruption, surged up and started doming/churning to a foot for ~10 seconds. Spasmodic was low.
10923 27 Jan 2019 @ 0900 --- Graham Mainly in overflow all week
10605 13 Oct 2018 @ 1305 13 Oct 2018 @ 1545 Tara Water level down about an inch below overflow. I have not seen it below overflow previously this season. Water levels also seemed especially low in Sawmill and Oval. Water levels had returned to normal by 1545.
9374 01 Aug 2018 @ 1922 --- JSJ Full pool & in overflow, with light roiling.
8472 05 Jun 2018 @ 1743 --- JSJ Churn Geyser is lightly roiling and in overflow.
7899 31 Jan 2018 @ 0715 --- Graham Below overflow for the first time this week.
4829 07 Aug 2017 @ 1333 --- JSJ Basin water-filled and gently overflowing. Gentle, but steady stream of small bubbles over vent. Orangish microbial mats bordering pool and lining main runoff channel.
4012 23 Apr 2017 @ 1008 --- Janet Jones Churn was sending up steady light bubbles. Overflowing steadily and microbes growing on the edge of the crater.
3972 21 Apr 2017 @ 0734 --- Micah Kipple Dormant. Orange bacteria on edge of crater and in channel
3012 08 Jun 2016 @ 1621 08 Jun 2016 @ 1712 JSJ Churn Geyser was engaged in low, slightly intermittent splashing from a low pool. Observed from 1621 to 1712, when I left.
2156 14 Aug 2015 @ 1625 14 Aug 2015 @ 1856 JSJ Almost full at 1625, with no overflow. Noticed gentle roiling at 1632. Churn in overflow at 1856.
1592 15 May 2015 @ 1051 15 May 2015 @ 1652 JSJ No eruptions from 1051 to 1652. Mildly roiling to small splashing today.
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.