Last Known Eruption
20d 20h 6m ago

Latest Eruptions

Eruption DurationInterval
23 Sep 2019 @ 1841 ns wc1d 2h 53m
22 Sep 2019 @ 1548 ie2m 16d 3h 57m
06 Sep 2019 @ 11513d 1h 58m
03 Sep 2019 @ 095322m
03 Sep 2019 @ 0930:43 ns18d 14h 34m
15 Aug 2019 @ 185618m
15 Aug 2019 @ 1838 ie7d 4h 43m
08 Aug 2019 @ 13551m 18s 24m
08 Aug 2019 @ 13311-2m3h 24m
08 Aug 2019 @ 10072d 51m
06 Aug 2019 @ 091620m
06 Aug 2019 @ 0856>1m 4d 19h 53m
01 Aug 2019 @ 13031d 2h 52m
31 Jul 2019 @ 1010:173d 17h 41m
27 Jul 2019 @ 1629 ie wc4d 7h 34m
23 Jul 2019 @ 08551d 20h 59m
21 Jul 2019 @ 1156 ie6d 19h 10m
14 Jul 2019 @ 16462m 6d 9h 49m
08 Jul 2019 @ 0657 wc7d 12h 49m
30 Jun 2019 @ 1808 wc3d 18h 57m
26 Jun 2019 @ 23112m 2d 3h 13m
24 Jun 2019 @ 19586d 9h 34m
18 Jun 2019 @ 102423h 25m
17 Jun 2019 @ 105915h 31m
16 Jun 2019 @ 192811h 10m
16 Jun 2019 @ 0818 wc11h 46m
15 Jun 2019 @ 20321m 15s 1d 3h 5m
14 Jun 2019 @ 17271m 10d 22h 47m
03 Jun 2019 @ 18401m 23h 44m
02 Jun 2019 @ 1856~1m 4d 11m
29 May 2019 @ 1845~1m 1y 258d 10m
13 Sep 2017 @ 1835 wc111d 11h 58m
25 May 2017 @ 063758d 13h 27m
27 Mar 2017 @ 1710 ie wc4d 7h 16m
23 Mar 2017 @ 0954 wc15h 8m
22 Mar 2017 @ 1846 ? wc~1m 28d 1h 11m
22 Feb 2017 @ 1635 wc22m
22 Feb 2017 @ 1613 wc14m
22 Feb 2017 @ 1559 wc18m
22 Feb 2017 @ 1541 wc2h 38m
22 Feb 2017 @ 1303 wc3d 24m
19 Feb 2017 @ 123939m
19 Feb 2017 @ 120020h 31m
18 Feb 2017 @ 152911m
18 Feb 2017 @ 1518 ini3h 22m
18 Feb 2017 @ 115620h 17m
17 Feb 2017 @ 153913m
17 Feb 2017 @ 152615d 6h 47m
02 Feb 2017 @ 0839 wc2d 15m
31 Jan 2017 @ 0824 wc4d 14h 9m
26 Jan 2017 @ 181530m
26 Jan 2017 @ 1745 ini9h 41m
26 Jan 2017 @ 0804 ini2d 14h 31m
23 Jan 2017 @ 1733 wc14m
23 Jan 2017 @ 1719 wc10m
23 Jan 2017 @ 1709 wc10m
23 Jan 2017 @ 1659 wc9m
23 Jan 2017 @ 1650 wc11m
23 Jan 2017 @ 1639 wc9m
23 Jan 2017 @ 1630 wc11m
23 Jan 2017 @ 1619 wc9m
23 Jan 2017 @ 1610 wc1h 11m
23 Jan 2017 @ 145913m
23 Jan 2017 @ 144619m
23 Jan 2017 @ 142717m
23 Jan 2017 @ 1410 ini1h 9m
23 Jan 2017 @ 13014m
23 Jan 2017 @ 1257 min9m
23 Jan 2017 @ 12488m
23 Jan 2017 @ 124010m
23 Jan 2017 @ 1230 ini50m
23 Jan 2017 @ 11405m
23 Jan 2017 @ 1135 min8m
23 Jan 2017 @ 112735m
23 Jan 2017 @ 105217m
23 Jan 2017 @ 1035 ini3h 6m
23 Jan 2017 @ 072913h 42m
22 Jan 2017 @ 174714m
22 Jan 2017 @ 1733 ini2h 19m
22 Jan 2017 @ 1514 min25m
22 Jan 2017 @ 144911m
22 Jan 2017 @ 1438 ini20h 51m
21 Jan 2017 @ 1747 wc3h 23m
21 Jan 2017 @ 1424 wc12m
21 Jan 2017 @ 1412 wc9m
21 Jan 2017 @ 1403 wc18m
21 Jan 2017 @ 1345 wc2d 21h 6m
18 Jan 2017 @ 1639 wc14m
18 Jan 2017 @ 1625 ie wc10m
18 Jan 2017 @ 1615 wc8m
18 Jan 2017 @ 1607 wc8m
18 Jan 2017 @ 1559 wc9m
18 Jan 2017 @ 1550 wc7m
18 Jan 2017 @ 1543 wc7m
18 Jan 2017 @ 1536 wc6d 22h 53m
11 Jan 2017 @ 1643 wc4h 29m
11 Jan 2017 @ 1214 wc10m
11 Jan 2017 @ 1204 wc59d 48m
13 Nov 2016 @ 1116 wc8d 2h 38m
05 Nov 2016 @ 0938 ns16h 10m

Interval Statistics

Interval Count100
Min4m
Max1y 258d 10m
Mean10d 12h 43m
Median3h 14m
Initial-to-Initial
Interval Count7
Min1h 40m
Max22d 21h 33m
Mean3d 20h 40m
Median9h 41m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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
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.


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