Last Known Eruption
2d 1h 30m ago

Latest Eruptions

Eruption DurationInterval
13 Jun 2025 @ 08495m
13 Jun 2025 @ 08443m
13 Jun 2025 @ 08413m
13 Jun 2025 @ 08387m
13 Jun 2025 @ 08312d 1h 37m
11 Jun 2025 @ 06547m
11 Jun 2025 @ 06475m
11 Jun 2025 @ 06425m
11 Jun 2025 @ 06372m
11 Jun 2025 @ 06351m
11 Jun 2025 @ 06342m
11 Jun 2025 @ 06321m
11 Jun 2025 @ 06312m
11 Jun 2025 @ 06291m
11 Jun 2025 @ 06282m
11 Jun 2025 @ 06261m
11 Jun 2025 @ 06252m
11 Jun 2025 @ 06233m
11 Jun 2025 @ 06203m
11 Jun 2025 @ 06173m
11 Jun 2025 @ 06141m
11 Jun 2025 @ 06132m
11 Jun 2025 @ 06112m
11 Jun 2025 @ 06092m
11 Jun 2025 @ 06074m
11 Jun 2025 @ 06038m
11 Jun 2025 @ 05559m
11 Jun 2025 @ 05468m
11 Jun 2025 @ 05388m
11 Jun 2025 @ 05308m
11 Jun 2025 @ 05229m
11 Jun 2025 @ 05139m
11 Jun 2025 @ 05043d 13h 1m
07 Jun 2025 @ 16031d 8m
06 Jun 2025 @ 15557m
06 Jun 2025 @ 15489m
06 Jun 2025 @ 15398m
06 Jun 2025 @ 15317m
06 Jun 2025 @ 15242m
06 Jun 2025 @ 15222m
06 Jun 2025 @ 15201m
06 Jun 2025 @ 15192m
06 Jun 2025 @ 15171m
06 Jun 2025 @ 15162m
06 Jun 2025 @ 15141m
06 Jun 2025 @ 15132m
06 Jun 2025 @ 15112m
06 Jun 2025 @ 15091m
06 Jun 2025 @ 15082m
06 Jun 2025 @ 15063m
06 Jun 2025 @ 15033m
06 Jun 2025 @ 15004m
06 Jun 2025 @ 14565m
06 Jun 2025 @ 14517m
06 Jun 2025 @ 14448m
06 Jun 2025 @ 14362d 4h 33m
04 Jun 2025 @ 10031m
04 Jun 2025 @ 10022m
04 Jun 2025 @ 10001m
04 Jun 2025 @ 09592m
04 Jun 2025 @ 09571m
04 Jun 2025 @ 09562m
04 Jun 2025 @ 09542m
04 Jun 2025 @ 09521m
04 Jun 2025 @ 09512m
04 Jun 2025 @ 09491m
04 Jun 2025 @ 09482m
04 Jun 2025 @ 09462m
04 Jun 2025 @ 09442m
04 Jun 2025 @ 09423m
04 Jun 2025 @ 09394m
04 Jun 2025 @ 09356m
04 Jun 2025 @ 092910m
04 Jun 2025 @ 09198m
04 Jun 2025 @ 091110m
04 Jun 2025 @ 090114h 30m
03 Jun 2025 @ 18319h 55m
03 Jun 2025 @ 08366d 33m
28 May 2025 @ 08037m
28 May 2025 @ 07567m
28 May 2025 @ 07495m
28 May 2025 @ 07445m
28 May 2025 @ 07395m
28 May 2025 @ 07345m
28 May 2025 @ 07295m
28 May 2025 @ 07242m
28 May 2025 @ 07222m
28 May 2025 @ 072010h 37m
27 May 2025 @ 20431m
27 May 2025 @ 20422m
27 May 2025 @ 20403m
27 May 2025 @ 20375m
27 May 2025 @ 20323m
27 May 2025 @ 20296m
27 May 2025 @ 20237m
27 May 2025 @ 20168m
27 May 2025 @ 20087m
27 May 2025 @ 20017m
27 May 2025 @ 19541d 1h 1m
26 May 2025 @ 18538m

Interval Statistics

Interval Count100
Min1m
Max6d 33m
Mean4h 13m
Median3m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
39253 21 May 2025 @ 2021 21 May 2025 @ 2032 Tara Steaming and grumbling, episodes of louder grumbling at 2021, 2022, and 2032 before initial at 2034
36878 09 Sep 2024 @ 2232 --- Suzanne Eruptions continued during Fountain's eruption, with shorter 2 to 4 minute intervals.
36839 07 Sep 2024 @ 1351 07 Sep 2024 @ 1634 Graham Jet continued to erupt during the Trifecta and afterwards when I left. Intervals were about 90s. Sorry I didn't log them all for you!
36546 25 Aug 2024 @ 1523 25 Aug 2024 @ 1632 CP I didn’t log all these as they were all the same weak eruptions until 1423.
37909 08 Aug 2024 @ 1625 --- Tara 1625 first grumble, 1641 grumble with water
37907 31 Jul 2024 @ 2249 --- Tara first faint grumble
35964 18 Jul 2024 @ 1313 --- mhreed Jet continued through Fountain at 1 to 3 minute intervals.
35955 18 Jul 2024 @ 0810 --- mhreed Near constant grumbling. Occasionally gets a feeble splash out of the vertical vents. Cycles strengthened gradually until proper eruptions started back up by 0951. Might have had a couple proper eruptions before then but I wasn’t paying close attention.
35925 16 Jul 2024 @ 1902 --- mhreed Jet continued at irregular intervals.
37853 12 Jul 2024 @ 1605 --- Tara first steam in Jet
37852 08 Jul 2024 @ 1318 --- Tara first steam, preceded Fountain by 29 minutes
35605 28 Jun 2024 @ 1136 28 Jun 2024 @ 1157 LynnS Didn’t record eruptions
35486 23 Jun 2024 @ 1400 23 Jun 2024 @ 1530 LynnS Jet did not erupt during this time.
35480 23 Jun 2024 @ 0904 23 Jun 2024 @ 0927 LynnS Stopped logging; Jet erupted at 2-3 minute intervals during Fountain’s eruption.
35461 22 Jun 2024 @ 1250 22 Jun 2024 @ 1330 LynnS Break in data collection
35431 21 Jun 2024 @ 1230 21 Jun 2024 @ 1241 LynnS Jet was erupting at 1-3 minute intervals but I didn’t record them.
35198 13 Jun 2024 @ 0905 13 Jun 2024 @ 1349 JSJ No Jets.
35112 10 Jun 2024 @ 1506 10 Jun 2024 @ 1646 LynnS Jet did not erupt during this time.
35048 09 Jun 2024 @ 1545 09 Jun 2024 @ 1603 LynnS Jet was active at 1-3 minute intervals between Fountain’s eruption.
35044 09 Jun 2024 @ 0729 09 Jun 2024 @ 0746 LynnS Jet active at 1-3 minute intervals during Fountain’s eruption.
34931 06 Jun 2024 @ 1014 06 Jun 2024 @ 1036 LynnS Jet erupted every 1-3 minutes during Fountain’s eruption.
34846 02 Jun 2024 @ 0828 02 Jun 2024 @ 1408 JSJ All closed intervals.
34664 24 May 2024 @ 1952 --- Tara first grumbling and steaming
34561 14 May 2024 @ 1954 --- Tara First faint grumble with steam
34361 27 Apr 2024 @ 1332 --- Mikemcc jet continued throughout Fountain and at least once after fountain
28613 03 Oct 2023 @ 1000 03 Oct 2023 @ 1019 ThomasR Constant rumbling with a couple of tiny splashes in between.
28411 22 Sep 2023 @ 1057 --- ThomasR Jet continued after Fountain
28368 20 Sep 2023 @ 1458 20 Sep 2023 @ 1526 ThomasR Jet continued frequent eruptions during Fountain, but I did not record exact times.
28314 17 Sep 2023 @ 2130 --- SantaFe108 Began grumbling around this time, didn't stay to see if it erupted.
28019 04 Sep 2023 @ 1031 04 Sep 2023 @ 1101 LynnS Break in data collection
27978 03 Sep 2023 @ 1000 03 Sep 2023 @ 1300 LynnS Not under observation
27983 03 Sep 2023 @ 0710 03 Sep 2023 @ 1000 LynnS Did not erupt during this time
27949 02 Sep 2023 @ 0705 02 Sep 2023 @ 0805 LynnS Break in data collection
27919 01 Sep 2023 @ 0924 01 Sep 2023 @ 1530 LynnS Jet did not erupt during this time.
27831 28 Aug 2023 @ 1120 28 Aug 2023 @ 1245 LynnS Break in data collection
27775 25 Aug 2023 @ 1305 25 Aug 2023 @ 1505 LynnS Break in data collection
27764 24 Aug 2023 @ 1530 24 Aug 2023 @ 1730 LynnS Break in data collection
27763 24 Aug 2023 @ 1443 24 Aug 2023 @ 1454 LynnS Break in data collection
27759 24 Aug 2023 @ 0900 24 Aug 2023 @ 1150 LynnS Break in data collection
27746 23 Aug 2023 @ 1000 23 Aug 2023 @ 1225 LynnS Break in data collection
27743 23 Aug 2023 @ 0848 23 Aug 2023 @ 0908 LynnS Jet active at short intervals, but I did not record the individual eruptions.
27729 22 Aug 2023 @ 1021 22 Aug 2023 @ 1038 LynnS Jet was active but I didn’t record the eruptions
27713 21 Aug 2023 @ 1311 21 Aug 2023 @ 1340 LynnS Active at 1-3m intervals during Fountain’s eruption
27712 21 Aug 2023 @ 0821 21 Aug 2023 @ 0846 LynnS Jet was active at 1-3 minute intervals during Fountain’s eruption, but I did not record times due to the rain.
27672 18 Aug 2023 @ 1206 18 Aug 2023 @ 1225 LynnS Break in data collection
27647 16 Aug 2023 @ 1240 16 Aug 2023 @ 1300 LynnS Break in data collection
27502 10 Aug 2023 @ 1400 10 Aug 2023 @ 1510 LynnS Break in data collected
27480 09 Aug 2023 @ 1258 09 Aug 2023 @ 1727 JSJ No Jets at all.
27448 06 Aug 2023 @ 1514 --- LynnS Rainstorm arrived, stopped timing Jet
27447 06 Aug 2023 @ 1346 06 Aug 2023 @ 1419 LynnS Break in data collection
27420 05 Aug 2023 @ 1324 05 Aug 2023 @ 1354 LynnS Break in data collection
27408 04 Aug 2023 @ 0701 04 Aug 2023 @ 0723 LynnS Jet was active at 1-3 minute intervals during Fountain’s eruption but I did not record the individual eruptions.
27390 02 Aug 2023 @ 1200 02 Aug 2023 @ 1415 LynnS Break in collecting data
27373 01 Aug 2023 @ 1300 01 Aug 2023 @ 1410 LynnS Was not under observation during this time.
27232 25 Jul 2023 @ 0620 25 Jul 2023 @ 1458 LynnS Jet did not erupt during this time.
27197 24 Jul 2023 @ 1238 --- steve Grumbled but did not erupt
27144 21 Jul 2023 @ 0758 21 Jul 2023 @ 1228 LynnS Jet did not erupt during this time
27133 20 Jul 2023 @ 1250 20 Jul 2023 @ 1310 LynnS No data was collected during this time
27074 15 Jul 2023 @ 1544 15 Jul 2023 @ 1611 LynnS Jet erupted at 2-3 minute intervals during Fountain’s eruption, bit I didn’t record individual eruptions.
27075 15 Jul 2023 @ 0704 15 Jul 2023 @ 1317 LynnS Jet did not erupt during this time.
27067 14 Jul 2023 @ 1713 --- LynnS Active during Fountain
27054 13 Jul 2023 @ 1337 13 Jul 2023 @ 1820 LynnS Jet did not erupt during this time.
27053 13 Jul 2023 @ 1310 13 Jul 2023 @ 1321 LynnS Did not record eruptions of Jet whole watching for eruptions of Morning’s Thief
27026 12 Jul 2023 @ 1356 12 Jul 2023 @ 1403 LynnS Did not record eruptions of Jet
27025 12 Jul 2023 @ 1003 12 Jul 2023 @ 1032 LynnS Break in observation
26989 10 Jul 2023 @ 1816 10 Jul 2023 @ 1837 LynnS Jet active at 1-3 minute intervals during both Fountain’s 1810 and Super Frying Pan’s 1823 eruptions
26578 21 Jun 2023 @ 2135 --- Tara Second grumble, no further activity as of 2140
26577 21 Jun 2023 @ 2134 --- Tara First grumble after the end of Fountain.
26570 21 Jun 2023 @ 1422 21 Jun 2023 @ 1647 Nikki All closed intervals.
26564 21 Jun 2023 @ 1221 --- Craigmon99 Grumbling
26524 20 Jun 2023 @ 1552 --- Craigmon99 No eruption since last one. Grumbly
26382 16 Jun 2023 @ 1431 16 Jun 2023 @ 1452 JSJ Missed recording Jet eruptions in first ~half of Fountain's eruption.
26106 06 Jun 2023 @ 1920 --- Tara Started grumbling and steaming. Got slightly louder and continued until Fountain start at 1932 and Jet initial at 1935.
26034 03 Jun 2023 @ 1951 03 Jun 2023 @ 2005 Tara Heavier grumbling commenced about 10 minutes before Fountain started, at about the same time as Clepsydra started having more frequent splashing.
25986 03 Jun 2023 @ 1932 03 Jun 2023 @ 1950 Tara Very gentle but steady low rumbling.
25734 23 May 2023 @ 1904 --- Tara grumble
25733 23 May 2023 @ 1901 --- Tara grumble
25555 19 May 2023 @ 1505 19 May 2023 @ 1524 Tara steady low grumbling during this time
25559 19 May 2023 @ 1524 --- Tara loud grumble, no water
25558 19 May 2023 @ 1457 --- Tara grumble, no water
25557 19 May 2023 @ 1454 --- Tara louder grumble
25556 19 May 2023 @ 1453 --- Tara first grumble
24864 10 Jan 2023 @ 1607 --- Graham Aborted eruption
24862 10 Jan 2023 @ 1547 --- Graham Aborted eruption
24706 17 Oct 2022 @ 1932 --- Tara grumble, no water
24705 17 Oct 2022 @ 1931 --- Tara grumble, no water
24419 16 Oct 2022 @ 1526 --- SantaFe108 Grumbled but did not erupt.
24702 16 Oct 2022 @ 1414 --- Tara grumble, no water
24417 16 Oct 2022 @ 0745 16 Oct 2022 @ 1034 User34 Quiet
24698 10 Oct 2022 @ 1715 --- Tara first faint rumble after being quiet
24274 05 Oct 2022 @ 1616 --- steve For the last about 3 hours Jet has been trying to start but has only had weak sprays
24689 04 Oct 2022 @ 2051 --- Tara grumble, no water
24688 04 Oct 2022 @ 1716 --- Tara grumble, no water
24687 04 Oct 2022 @ 1713 --- Tara grumble, no water
24686 04 Oct 2022 @ 1630 --- Tara grumble, no water
24171 30 Sep 2022 @ 1616 --- Graham Grumbling but still no eruption.
24161 29 Sep 2022 @ 1030 --- ThomasR Tried, but didn’t erupt
23702 10 Sep 2022 @ 0838 10 Sep 2022 @ 0852 Stephen_Gemar Jet did not erupt during this period.
23598 05 Sep 2022 @ 1948 --- Tara heavy grumble just as SFP got to full strength and just before Ftn ended
24619 05 Sep 2022 @ 1948 --- Tara loud grumble, no water
EntrySourceLinkComment
11 Jun 2017 @ 1914 JSJ https://www.flickr.com/photos/jsjgeology/35242499242 Photo (1 of 3) of Jet Geyser's 7:14 to 7:15 PM eruption on 11 June 2017.
11 Jun 2017 @ 1908 JSJ https://www.flickr.com/photos/jsjgeology/35408922985 Photo (1 of 2) of Jet Geyser's 7:08 PM eruption on 11 June 2017.
03 Jun 2017 @ 1541 JSJ https://www.flickr.com/photos/jsjgeology/35242408252 Photo of Jet Geyser's 3:41 PM eruption on 3 June 2017.
03 Jun 2017 @ 1539 JSJ https://www.flickr.com/photos/jsjgeology/34599328523 Photo of Jet Geyser's 3:39 PM eruption on 3 June 2017.
05 Jun 2016 @ 1802 JSJ https://www.flickr.com/photos/jsjgeology/29006935972 Photo (1 of 2) of Jet Geyser's 6:02 PM eruption on 5 June 2016.
03 Jul 2016 @ 1851 JSJ https://www.flickr.com/photos/jsjgeology/28336841651 Photo (1 of 7) of Jet Geyser's 6:51 to 6:52 PM eruption on 3 July 2016.
09 Jun 2016 @ 1736 JSJ https://www.flickr.com/photos/jsjgeology/28493133703 Thermal image of Jet Geyser's 5:36 PM eruption on 9 June 2016.
Baseline does not exist.