Last Known Eruption
8h 4m ago

Latest Eruptions

Eruption DurationInterval
14 Aug 2025 @ 171711m
14 Aug 2025 @ 17068m
14 Aug 2025 @ 16585m
14 Aug 2025 @ 1653 ini2h 20m
14 Aug 2025 @ 143317m
14 Aug 2025 @ 141612m
14 Aug 2025 @ 140414m
14 Aug 2025 @ 13509m
14 Aug 2025 @ 134110m
14 Aug 2025 @ 13319m
14 Aug 2025 @ 132211m
14 Aug 2025 @ 131112m
14 Aug 2025 @ 125919m
14 Aug 2025 @ 1240 ini1h 50m
14 Aug 2025 @ 10509m
14 Aug 2025 @ 10418m
14 Aug 2025 @ 10337m
14 Aug 2025 @ 10262m
14 Aug 2025 @ 10241m
14 Aug 2025 @ 10232m
14 Aug 2025 @ 10211m
14 Aug 2025 @ 10202m
14 Aug 2025 @ 10182m
14 Aug 2025 @ 10161m
14 Aug 2025 @ 10152m
14 Aug 2025 @ 10131m
14 Aug 2025 @ 10122m
14 Aug 2025 @ 10102m
14 Aug 2025 @ 10081m
14 Aug 2025 @ 10072m
14 Aug 2025 @ 10051m
14 Aug 2025 @ 10042m
14 Aug 2025 @ 10023m
14 Aug 2025 @ 09592m
14 Aug 2025 @ 09572m
14 Aug 2025 @ 09556m
14 Aug 2025 @ 094910m
14 Aug 2025 @ 09399m
14 Aug 2025 @ 09309m
14 Aug 2025 @ 092110m
14 Aug 2025 @ 091111m
14 Aug 2025 @ 090011m
14 Aug 2025 @ 084910m
14 Aug 2025 @ 083911m
14 Aug 2025 @ 082810m
14 Aug 2025 @ 08189m
14 Aug 2025 @ 08097m
14 Aug 2025 @ 080213m
14 Aug 2025 @ 074913m
14 Aug 2025 @ 07369m
14 Aug 2025 @ 07277m
14 Aug 2025 @ 072012m
14 Aug 2025 @ 070813h 58m
13 Aug 2025 @ 17103m
13 Aug 2025 @ 17072m
13 Aug 2025 @ 17052m
13 Aug 2025 @ 17032m
13 Aug 2025 @ 17011m
13 Aug 2025 @ 17002m
13 Aug 2025 @ 16582m
13 Aug 2025 @ 16562m
13 Aug 2025 @ 165421m
13 Aug 2025 @ 16339m
13 Aug 2025 @ 1624 ini5h 2m
13 Aug 2025 @ 11228m
13 Aug 2025 @ 11149m
13 Aug 2025 @ 11058m
13 Aug 2025 @ 10577m
13 Aug 2025 @ 10506m
13 Aug 2025 @ 10441m
13 Aug 2025 @ 10432m
13 Aug 2025 @ 10411m
13 Aug 2025 @ 10402m
13 Aug 2025 @ 10381m
13 Aug 2025 @ 10372m
13 Aug 2025 @ 10351m
13 Aug 2025 @ 10342m
13 Aug 2025 @ 10321m
13 Aug 2025 @ 10312m
13 Aug 2025 @ 10292m
13 Aug 2025 @ 10271m
13 Aug 2025 @ 10262m
13 Aug 2025 @ 10241m
13 Aug 2025 @ 10232m
13 Aug 2025 @ 10212m
13 Aug 2025 @ 10192m
13 Aug 2025 @ 10172m
13 Aug 2025 @ 10152m
13 Aug 2025 @ 10134m
13 Aug 2025 @ 1009 ini19m
13 Aug 2025 @ 09508m
13 Aug 2025 @ 09427m
13 Aug 2025 @ 09358m
13 Aug 2025 @ 09278m
13 Aug 2025 @ 09197m
13 Aug 2025 @ 09127m
13 Aug 2025 @ 09058m
13 Aug 2025 @ 085746m
13 Aug 2025 @ 08117m
13 Aug 2025 @ 08046m

Interval Statistics

Interval Count100
Min1m
Max13h 58m
Mean19m
Median6m
Initial-to-Initial
Interval Count3
Min4h 13m
Max20h 16m
Mean10h 14m
Median6h 15m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
41082 14 Aug 2025 @ 1152 14 Aug 2025 @ 1239 JSJ No Jets.
41044 13 Aug 2025 @ 0814 13 Aug 2025 @ 0853 LynnS Left unattended during this time
40911 08 Aug 2025 @ 0855 08 Aug 2025 @ 0925 LynnS Break in data collection
40876 06 Aug 2025 @ 0630 06 Aug 2025 @ 1330 LynnS This is a complete list of Jet eruptions from 0630 to 1330.
40843 05 Aug 2025 @ 0830 05 Aug 2025 @ 1550 LynnS This is a complete record for all of Jet’s eruptive activity during this period.
40797 04 Aug 2025 @ 1338 04 Aug 2025 @ 1416 LynnS Jet was active during this time but I did not record eruptions.
40796 04 Aug 2025 @ 1042 04 Aug 2025 @ 1110 LynnS Jet was not under Observation during this time but people said Jet continued to erupt and Super Frying Pan did not erupt
40618 26 Jul 2025 @ 1303 26 Jul 2025 @ 1533 LynnS Not under observation during this time.
40617 26 Jul 2025 @ 1157 26 Jul 2025 @ 1212 LynnS Jet was erupting at 1-3 minute intervals but I did not record the eruptions.
40616 26 Jul 2025 @ 0838 26 Jul 2025 @ 0938 LynnS Break in data collection
40423 15 Jul 2025 @ 1201 15 Jul 2025 @ 1225 LynnS Jet active at 1-3 minute intervals but I did not record times.
40409 14 Jul 2025 @ 1253 14 Jul 2025 @ 1305 LynnS Jet erupted at short intervals during Fountain’s eruption.
40408 14 Jul 2025 @ 1030 14 Jul 2025 @ 1210 LynnS Was not under observation
40360 13 Jul 2025 @ 1527 13 Jul 2025 @ 1551 LynnS Jet was active at 1-3 minute intervals during this time.
40359 13 Jul 2025 @ 1315 13 Jul 2025 @ 1400 LynnS Jet was not under observation at this time.
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
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.