Last Known Eruption
15y 361d 18h 13m ago

Latest Eruptions

Eruption DurationInterval
19 Jun 2008 @ 16253d 23h 10m
15 Jun 2008 @ 17152h 29m
15 Jun 2008 @ 144613m
15 Jun 2008 @ 143313m
15 Jun 2008 @ 142015m
15 Jun 2008 @ 14056d 21h 38m
08 Jun 2008 @ 16275h 35m
08 Jun 2008 @ 10523d 18h 57m
04 Jun 2008 @ 155515m
04 Jun 2008 @ 15405h 20m
04 Jun 2008 @ 102019h 30m
03 Jun 2008 @ 14505h 36m
03 Jun 2008 @ 091414m
03 Jun 2008 @ 09007d 23h 59m
26 May 2008 @ 090119h 46m
25 May 2008 @ 131513m
25 May 2008 @ 130213m
25 May 2008 @ 124913m
25 May 2008 @ 123614m
25 May 2008 @ 122214m
25 May 2008 @ 120813m
25 May 2008 @ 115512m
25 May 2008 @ 11431d 23m
24 May 2008 @ 11207d 1h 6m
17 May 2008 @ 101415m
17 May 2008 @ 09592d 8m
15 May 2008 @ 095122h 57m
14 May 2008 @ 105414m
14 May 2008 @ 10401d 20m
13 May 2008 @ 10202d 5m
11 May 2008 @ 10155d 18h 53m
05 May 2008 @ 152212m
05 May 2008 @ 151017m
05 May 2008 @ 1453 ie2h 31m
05 May 2008 @ 1222 ie1d 3h 27m
04 May 2008 @ 085514m
04 May 2008 @ 084116h 31m
03 May 2008 @ 161014m
03 May 2008 @ 155644m
03 May 2008 @ 15122m
03 May 2008 @ 151015m
03 May 2008 @ 145514m
03 May 2008 @ 144115m
03 May 2008 @ 14262m
03 May 2008 @ 142414m
03 May 2008 @ 141015m
03 May 2008 @ 13552m
03 May 2008 @ 135316m
03 May 2008 @ 133713m
03 May 2008 @ 132416m
03 May 2008 @ 130814m
03 May 2008 @ 125415m
03 May 2008 @ 123915m
03 May 2008 @ 122443m
03 May 2008 @ 114113m
03 May 2008 @ 112815m
03 May 2008 @ 111315m
03 May 2008 @ 105828m
03 May 2008 @ 10301d 1h 50m
02 May 2008 @ 08401d 18h 47m
30 Apr 2008 @ 13532y 325d 23h 28m
09 Jun 2005 @ 14252h 55m
09 Jun 2005 @ 1130256d 23h 6m
25 Sep 2004 @ 12241m 54m
25 Sep 2004 @ 113016m
25 Sep 2004 @ 11141h 4m
25 Sep 2004 @ 1010 A

Interval Statistics

Interval Count66
Min2m
Max2y 325d 23h 28m
Mean20d 15h 43m
Median16m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
35077 10 Jun 2024 @ 1227 --- SantaFe108 Gently emitting steam.
29304 31 Oct 2023 @ 1317 --- MAB quietly steaming - found a dime on the frozen snowy path- good luck Forgotten Fumarole!
29044 22 Oct 2023 @ 1245 --- SantaFe108 Gently forcing steam.
28889 19 Oct 2023 @ 1755 --- ypcaribou Steaming from empty vent
27278 28 Jul 2023 @ 1245 --- SantaFe108 Quietly forcing steam.
26847 04 Jul 2023 @ 1719 --- MAB warm part of the day 1656 & 1719 steam still visible
26503 20 Jun 2023 @ 1253 --- SantaFe108 Gently forcing steam.
26402 17 Jun 2023 @ 1458 --- SantaFe108 Gently forcing steam.
25871 28 May 2023 @ 2023 --- SantaFe108 Quietly forcing steam.
25653 21 May 2023 @ 1358 --- SantaFe108 Quietly steaming.
24378 14 Oct 2022 @ 1820 --- MAB quiet forced steam
22747 20 Jul 2022 @ 1957 --- nails Quietly steaming
21811 07 Jun 2022 @ 1138 --- SantaFe108 Gently steaming.
21027 18 Apr 2022 @ 1300 --- MAB quiet steam
20310 04 Nov 2021 @ 0833 --- MAB gentle steam
16973 30 Apr 2021 @ 0918 --- MAB quietly steaming
8566 03 Jun 2018 @ 0835 --- Siegmund Quietly emitting dry steam. Same every time I walked by it on 3rd and 4th.
29375 05 Jul 2010 @ 1200 --- research-mab 7/5/2010 - no time noted - Forgotten Fumarole: warm/hot surface ground temperature in front of the bench – the soles of your shoes are warm when you sit on the bench.
29348 05 Jun 2008 @ 1200 --- research-mab 6/5/2008 - no time noted -Forgotten Fumarole erupts approx 20 ft high
31439 02 Aug 1981 @ 1200 --- research-mab Sunday August 2 1981 The Basin Wide Disturbance has occurred! - no time noted - Forgotten Fumeral [sic]- (we didn’t forget you!) 196º gently steaming
31718 23 Aug 1980 @ 1200 --- research-mab Saturday August 23 - no time noted - Forgotten Fumarole – Steaming heavily 203°F
31676 22 Jul 1980 @ 1340 --- research-mab inferred time - Old Norris Road - -50 yds further a large steam vent only 10 yards from the road was pushing a steam column 15 feet high with a gentle, but active velocity [--> added Forgotten Fumarole]
No attachments for this geyser.
Baseline does not exist.