Last Known Eruption
12d 1h 14m ago

Latest Eruptions

Eruption DurationInterval
14 Sep 2022 @ 171331m 45m
14 Sep 2022 @ 162825m 6h 49m
14 Sep 2022 @ 09391h 1m
14 Sep 2022 @ 083830m 14h 6m
13 Sep 2022 @ 1832<34m 1h 6m
13 Sep 2022 @ 1726 ie1h 14m
13 Sep 2022 @ 161235m 1h 18m
13 Sep 2022 @ 145438m 18h 0m
12 Sep 2022 @ 205429m 3h 14m
12 Sep 2022 @ 17401h 0m
12 Sep 2022 @ 164034m 59m
12 Sep 2022 @ 154130m 1h 24m
12 Sep 2022 @ 141743m 3d 6h 53m
09 Sep 2022 @ 0724 ie>14m 1d 18h 6m
07 Sep 2022 @ 131828m 45m
07 Sep 2022 @ 123319m 33m
07 Sep 2022 @ 120018m 40m
07 Sep 2022 @ 112023m 1d 16h 5m
05 Sep 2022 @ 19152h 3m
05 Sep 2022 @ 171217m 53m
05 Sep 2022 @ 161929m 18m
05 Sep 2022 @ 160112m 52m
05 Sep 2022 @ 150933m 1d 6h 55m
04 Sep 2022 @ 0814>18m 27m
04 Sep 2022 @ 074715m 1h 7m
04 Sep 2022 @ 0640 ie>42m 11h 8m
03 Sep 2022 @ 193223m 7d 52m
27 Aug 2022 @ 18401d 9h 59m
26 Aug 2022 @ 0841 maj41m 53m
26 Aug 2022 @ 07483d 16h 44m
22 Aug 2022 @ 1504 maj12d 21h 43m
09 Aug 2022 @ 1721 ie31d 23h 50m
08 Jul 2022 @ 173134m 2d 7h 48m
06 Jul 2022 @ 094355m
06 Jul 2022 @ 084824m 58m
06 Jul 2022 @ 075035m 3d 1h 41m
03 Jul 2022 @ 0609 ie7h 46m
02 Jul 2022 @ 222352m
02 Jul 2022 @ 2131 ie3h 26m
02 Jul 2022 @ 180524m 24m
02 Jul 2022 @ 174113m 28m
02 Jul 2022 @ 171322m 55m
02 Jul 2022 @ 1618 ns~32m 41m
02 Jul 2022 @ 153722m 20m
02 Jul 2022 @ 151712m 7h 25m
02 Jul 2022 @ 07529h 33m
01 Jul 2022 @ 221921m
01 Jul 2022 @ 215812m 56m
01 Jul 2022 @ 2102 ie>34m 58m
01 Jul 2022 @ 200439m 11h 57m
01 Jul 2022 @ 080712h 24m
30 Jun 2022 @ 194334m 11h 38m
30 Jun 2022 @ 080513h 1m
29 Jun 2022 @ 19041h 1m
29 Jun 2022 @ 180335m 6h 30m
29 Jun 2022 @ 113334m 18h 6m
28 Jun 2022 @ 172734m 19h 54m
27 Jun 2022 @ 21333h 11m
27 Jun 2022 @ 182227m
27 Jun 2022 @ 17553h 17m
27 Jun 2022 @ 14381h 1m
27 Jun 2022 @ 1337 ns~29m 45m
27 Jun 2022 @ 125223m 46m
27 Jun 2022 @ 120657m
27 Jun 2022 @ 110928m 28m
27 Jun 2022 @ 104117m 1h 55m
27 Jun 2022 @ 08461h 1m
27 Jun 2022 @ 074550m
27 Jun 2022 @ 06559h 34m
26 Jun 2022 @ 212154m
26 Jun 2022 @ 2027 ns2h 49m
26 Jun 2022 @ 173857m
26 Jun 2022 @ 1641~26m 47m
26 Jun 2022 @ 155427m 7d 20h 15m
18 Jun 2022 @ 19391d 9h 59m
17 Jun 2022 @ 094042m 2d 12h 52m
14 Jun 2022 @ 204832m 9d 8h 44m
05 Jun 2022 @ 1204 ie57m
05 Jun 2022 @ 110757m
05 Jun 2022 @ 101016h 44m
04 Jun 2022 @ 17262h 18m
04 Jun 2022 @ 1508 ie45m
04 Jun 2022 @ 14231h 3m
04 Jun 2022 @ 13201h 1m
04 Jun 2022 @ 121941m 51m
04 Jun 2022 @ 112829m 39m
04 Jun 2022 @ 104918m 9m
04 Jun 2022 @ 10404m 23h 58m
03 Jun 2022 @ 104235m
03 Jun 2022 @ 100739m
03 Jun 2022 @ 09281h 5m
03 Jun 2022 @ 082349m
03 Jun 2022 @ 073441m
03 Jun 2022 @ 06539h 34m
02 Jun 2022 @ 211951m
02 Jun 2022 @ 202845m
02 Jun 2022 @ 19433h 26m
02 Jun 2022 @ 16174h 49m
02 Jun 2022 @ 112851m
02 Jun 2022 @ 103735m

Interval Statistics

Interval Count100
Min9m
Max31d 23h 50m
Mean1d 1h 1m
Median1h 2m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
19801 30 Sep 2021 @ 0832 --- Brian RV off now
18992 22 Aug 2021 @ 1258 22 Aug 2021 @ 1638 Polly Mostly quick cycles with little activity from Mortar vents. A often continued intermittently.
18584 22 Jul 2021 @ 1507 22 Jul 2021 @ 1713 Brian Cycle activity has been progressively less organized for the past two hours. We’ve had the semblance of two regular cycle starts, but each has degenerated into random splashing from Fan’s upper vents fairly quickly
17681 11 Jun 2021 @ 1614 11 Jun 2021 @ 1700 Polly 1614 RHGA ie, low levels. 1620 R off, AC (Angle continued), intermittent. 1624-1627 disorganized. AC 1628 R on then G & A. Low level cycle. R off 1651. 1657 R on & ANQ (Angle Never Quit).
13593 05 Sep 2019 @ 1605 05 Sep 2019 @ 1715 Polly R, H, A ie 1605. 1607 heavy MV steam, then lighter. 1615 heavy steam UM. 1620 R off, A Continued. 1622 copious MV steam, 25 UM audible steam. A off by 1630. Intermittent MV steam C. 1641 BV light spritz C, & tips of splashes visible LM, with improvement until R/H on 1651. A blips 1654 Continue & G on. H&G thick 1 - 2’ steady. H & G intermittent 1657, height decreasing. A on fully 1700. By 1704 occasional thin high spurts H&G. Left 1715. (BV channel damp ~2’ down.)
13594 05 Sep 2019 @ 1241 05 Sep 2019 @ 1328 Polly R off upon arrival, A & MV steam intermittent. 1249 A off. 1301 BV spritzing intermittently & improving. 1304 audible LM & UM. 1304 R/H , with A blips 1305. 1306 G on , H&G thick with some H spurts 2’. G&H thick at times. Subsided slowly & I left 1328.
12044 29 Jun 2019 @ 1552 29 Jun 2019 @ 1800 Polly On arrival, small puddle near Bottom Vent. Catch basins were dry. I watched portions of 3 mostly organized cycles, with intermittent moderate to heavy steam in Main Vent. Overall, water levels were moderate. Lower Mortar splashes were easily seen. Angle stayed on for a minute or 2 after River was off, then turned off. Cycle durations varied. There was a River Vent pause at 1618 (d=6m) but no splashing in Main Vent. (Some pushes of steam may have been from splashing at depth.) When River came back on, Angle started intermittent blipping right away on this cycle.
10037 04 Sep 2018 @ 0830 04 Sep 2018 @ 1952 c.barwin The first River to River began at 0904 and lasted 58 minutes. During this cycle, Angle did not turn off until 1 minute into the next River on which became an event cycle. The event cycle lasted 115 minutes, then the next cycle was 111 minutes, then 104, 119, and 116.
10017 03 Sep 2018 @ 0852 03 Sep 2018 @ 1826 c.barwin A day of 4 long cycles and one shortish one. In order of River on to River on starting at 0925... the first cycle was 80 minutes, then 94, 104, & 102. The one after the 102 was 61 minutes which was followed by a cycle with good water levels 35+ minutes after River on at 1732. Gold was on at 1734 and turned off at 1740 by forceful Main Vent steam. After copious MV steam with no water, Gold came back on two minutes later.. Throughout this cycle and the 61 minute one, MV steamed heavily.
9951 30 Aug 2018 @ 0830 30 Aug 2018 @ 1810 c.barwin I observed 5 normal cycles over a 9+ hour sit. The first cycle at 0845 was 112 minutes, then 71, 102, 104, & 93. Other than a couple of River coughs, the day was 'unEventful'.
9726 15 Aug 2018 @ 0824 15 Aug 2018 @ 1535 c.barwin observed 5 regular cycles during this time span.
9713 14 Aug 2018 @ 0825 14 Aug 2018 @ 1519 c.barwin observed 4 regular cycles during this time.
9689 12 Aug 2018 @ 1704 12 Aug 2018 @ 1931 minissa 2 regular cycles with High and Gold turning on not long after River and Angle within 2 minutes of that. Initial water levels pretty good. First cycle was 27 min, 2nd was 40 with some spritzing from Bottom and eventual steam put out by Frying Pan and I think Frying Pan 2 (small steam aperture inside back arm of Lower Mortar
7698 26 Sep 2017 @ 1226 26 Sep 2017 @ 1315 Polly River already off upon arrival. 1227-29 intermittent A splashes. Mortar mostly quiet 1226-1245. 1238 heavy MV steam. 1245 finally a few light fuzz balls BV and then at 48 some in LM. By 1256 thicker splashes BV & LM with MV huff. R on 1257, G 1258, A 1259. Thick water levels (H ~ 1') but bottoming out often.
7697 26 Sep 2017 @ 1043 26 Sep 2017 @ 1057 Polly 1043 BV light spritz; by 1049 BV spritz hitting top of rock. 10:49 R/H on; G on 1052. Pause 1053. 1054 R back on; G lightly on 1057.
6552 16 Sep 2017 @ 1329 16 Sep 2017 @ 1540 RLJones The series of very short cycles returned with 7 cycles ocurring during the 2h 11m of observation. Never was water viewed in MV nor was there any pooling or splashes in BV or LV. HV never exceeded 2 ft. AV was very frequent during entire observation. The short cycles were still in process when left.
6495 16 Sep 2017 @ 1057 16 Sep 2017 @ 1150 Polly Longer cycle with better water levels in Bottom Vent, High, & Gold.
7749 15 Sep 2017 @ 1610 15 Sep 2017 @ 1910 Tara Disorganized short garbage cycles with River off no longer than about 5 minutes at a time.
6360 13 Sep 2017 @ 1354 13 Sep 2017 @ 1409 Polly Last cycle River to River was 15 m. When River turned off at 1404, Angle actually stayed off.
6359 13 Sep 2017 @ 1135 13 Sep 2017 @ 1354 Polly Angle has played much of the day. Cycles have each been over an hour except the last one which was 45 minutes.
2865 21 May 2016 @ 0615 --- JimS Angle on 0631.
2849 15 May 2016 @ 0907 --- RLJones NO eruption yet. Having an organized cycle right now.
7800 06 Sep 2004 @ 1220 06 Sep 2004 @ 1306 Tara Disorganized garbage, Angle constant and River off for only 1-2 minutes at a time.
14319 05 Jun 1995 @ 1231 05 Jun 1995 @ 1243 JarnoO jetting from Angle Vent (weak) @ 1231; River Vent off 1239-1243
EntrySourceLinkComment
08 Aug 2017 @ 1830 JSJ https://www.youtube.com/watch?v=HuQxsKHf1rc#t=0m52s Time lapse video of 2 regular cycles of Fan & Mortar Geysers. The 6:30 to 7:43 PM regular cycle starts at time stamp 0:52 in the video.
08 Aug 2017 @ 1713 JSJ https://www.youtube.com/watch?v=HuQxsKHf1rc Time lapse video of 2 regular cycles of Fan & Mortar Geysers. The 5:13 to 6:05 PM regular cycle starts at time stamp 0:01 in the video.
Baseline does not exist.