Last Known Eruption
268d 14h 48m ago

Interval Statistics

Interval Count37
Min19h 55m
Max16y 288d 1h 18m
Mean1y 218d 21h 16m
Median151d 22h 38m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
24567 30 Oct 2022 @ 1415 --- ypcaribou Note for this 2022 summer season: Remains a perpetual spouter to couple feet.
18322 09 Jul 2021 @ 1850 --- MAB Some really nice bursts or maybe a combination of wind and backlighting - - Branch Sp strong center boil and in overflow
29130 03 Aug 2019 @ 1200 --- research-mab 8/3/2019 Minute – no time noted - vigorous almost violent
29589 31 Jul 2016 @ 1015 31 Jul 2016 @ 1100 research-mab 7/31/2016 Minute Geyser was experiencing larger eruptions than usual (up to 7-8 ft) about 10:15 this morning. When it was observed again after 11:00, it was drained completely.
29577 09 Jun 2016 @ 1200 --- research-mab 6/9/2016 - no time noted - Minute Geyser drained (never seen this before)
29403 06 Sep 2011 @ 1200 --- research-mab 9/6/2011 - no time noted - A new vent has opened up @ Minute Geyser. It might be the old vent cracks opened to the left of the current vent than a crater collapsed
29399 20 Aug 2011 @ 1000 20 Aug 2011 @ 1530 research-mab 8/20/2011 (~1000), Minute Geyser and the hot spring just to its east have changed in behavior in appearance at 1530 Minute’s secondary vent – just east of the perpetually spouting vent – is bubbling, where at 1000 it was calm. The hot spring – its usual milky green w/gentle bubbling at 1000 – is now muddy with the film on top (orange) bubbling more vigorously, and significantly higher water level.
4746 14 Jul 2002 @ 1329 --- research-mab 07/14/2002 Minute Geyser 1329 – was not visibly erupting over 5 mins. I heard the rumbling, then saw intermittent splashes – seemed lower, also.
29832 23 Jun 2002 @ 1330 --- research-mab 6/23 Keep an eye on Minute geyser – during my 1:30 walk, it was not spouting. Some interesting changes happening? Steam explosion? True geyser? Fun Fun Fun
4745 05 Jun 2002 @ 1400 --- research-mab Minute Geyser- during the 1:30 walk, Minute was NOT perpetually spouting. 15 minutes prior, Cory W.. passed it and it was spouting. Approx 2:00-2:15. DH
29881 24 Jun 2000 @ 1120 --- research-mab 6/24/2000 Dr Nordstrom, USGS doing research at Minute and pool next to it - monitored pH & temperature. -- Minute – Boiling 7.19 pH Branch – 80° 3.19 pH He says it may be because the cooler more acidic is drawing water from closer to the surface and hotter more neutral from lower down. Note: 1120 am Minute Geyser was not spouting when my group arrived, but it started up again. Dr Nordstrom says it was still spouting when he left at about 1030
29911 16 Sep 1999 @ 1115 --- research-mab 9/16/1999 No water spurting from Minute Geyser ~1115.
29950 07 Jul 1998 @ 0818 --- research-mab 7/7/1998 Minute Geyser – Full pool and eruption to 3’ 0818
4718 05 Jul 1998 @ 1114 --- research-mab 7/5/98 Back Basin- Minute dry at 1114, Pool becoming more and more orange colored.
29945 11 Jun 1998 @ 1810 --- research-mab 6-11-98 Minute: completely dry around vent, can hear water bubbling below at 1810. Pool to left down 12”-16”…. Nicole saw it dry around 2p?? and in eruption after the 343p Echinus eruption
4719 04 Jun 1998 @ 1715 05 Jun 1998 @ 1600 research-mab 6/5 At 5:13p yesterday (6/4) I approached Minute. There was no water coming out the vent although you could hear water bubbling and see an occasional wisp of steam. The thick white sinter was very apparent around the vent and the grey geyserite spine rocks were dry. The “new pool” was less full and there was no overflow. It appeared that Minute had acted like a geyser instead of a perpetual spouter. After seeing Echinus at 615pm for 4min I returned to check on Minute. From a distance I could see a huge column of steam appearing to be an eruption. At 1830 Minute was erupting to about 4’ with the “new pool” overflowing. This continued until ?? since I left at 1849. This a.m. (6/5) at 820 am Minute was behavior like a weak spouter with the water barely breaking the surface and rising slowly to 2”-4”. Stand by The “Minute” Minute cont… At about 2p Minute was dry when Dave walked by. Around 4p erupting as a geyser. The pool was very full & overflowing.
29933 20 Apr 1998 @ 1200 --- research-mab 4/20/1998 - no time noted - Minute is much less active.
30011 25 Sep 1997 @ 1200 --- research-mab 9/25/1997 - no time noted - I noticed some changes...Minute Geyser is in overflow w/large pool
30037 21 Sep 1996 @ 1800 --- research-mab 9/21/1996 - no time - Minute Geyser is again back to normal
5435 14 Sep 1996 @ 1800 --- research-mab 9/14/96 Minute Geyser has recovered and is back to what normal is for it these last years.
5434 11 Sep 1996 @ 1800 --- research-mab 9/11/96 Steam vent pressure at Minute Geyser has reduced. It is not spouting out much water vapor as before but does remain a steamvent. Resting for 5 sec. Then increases pressure for 15 sec. SB
5433 10 Sep 1996 @ 1800 --- research-mab 9/101996 Minute Geyser is now a steamvent erupting steam and fine spray to 40’! Sooo something happened between about 8pm last night and this afternoon!
5432 09 Sep 1996 @ 1800 --- research-mab 09/09/1996 Minute Geyser was erupting to its usual 2’ or so but water was pooled into the “old vent” hole. I sure hope we’re open next year.
30143 14 Sep 1995 @ 0825 --- research-mab 9/14/1995 - inferred time - {Placed a marker on Rubble @ 8:30} Minute Geyser seems to be more often in steam phase than water when I’ve passed by over the last 3 days.
30305 18 Sep 1993 @ 1200 --- research-mab 9/18/93 - no time noted - Minute Geyser to about 2!
30252 11 Aug 1993 @ 1130 --- research-mab 8/11/1993 Minute Geyser 203°F removed numerous rocks stick... Quiet 0900, erupting 4 ft 1130
30251 11 Aug 1993 @ 0900 --- research-mab 8/11/1993 Minute Geyser 203°F removed numerous rocks stick snip. Quiet 0900, erupting 4 ft 1130
30238 07 Jul 1993 @ 1200 --- research-mab 7/7/1993 - no time noted - Minute G no action
30467 10 Sep 1992 @ 1200 --- research-mab 9/10/92 - no time noted - Back Basin – Minute quiet, Palpitator palpitating,
30454 28 Aug 1992 @ 1200 --- research-mab 8/28/1992 - no time noted - Minute Geyser erupted to about 5-6 ft for 15 minutes (report from a visitor) When I went to check it out there was H20 everywhere but it was only steaming !!
30345 28 Jun 1992 @ 1200 --- research-mab 6/28/92 - no time noted - Minute Geyser is constantly bursting to ~2’
30332 07 May 1992 @ 1517 --- research-mab 5/7/92 Minute Geyser 1517 to 5’, heavy runoff into old vent.
30319 26 Apr 1992 @ 1200 --- research-mab 4/26/1992 - no time noted - - Minute- quiet but deep gurgling sound within vent
30597 20 Aug 1991 @ 1200 --- research-mab 8/20/91 – no time noted - Minute Geyser having bursts to 5’ or so.
30489 16 May 1991 @ 1200 --- research-mab 5/16/1991 - no time noted - Minute Geyser – my first major eruption! 1324 ie violent steam and water to 40’+ with a light jetting roar (whole thing very reminiscent of Porkchop in its heyday). The lower vent completely filled with water making a pool that goes nearly to adjacent Mushroom Pool. Had completely gone quiet by 1530.
4707 29 Jun 1990 @ 1420 --- research-mab 6/29/90 At 1420 as I walked thru Back Basin Dog’s Leg was drained. Corporal had overflowed. Minute Geyser was not erupting. Veteran was making a lot of noise but not erupting
30634 25 Jun 1990 @ 1200 --- research-mab June 25, 1990 - no time noted - Minute Geyser – today is constantly bursting to 2-3 ft with occasional 4-5 foot bursts.
4703 11 Jun 1990 @ 1800 --- research-mab 6/11/1990 Minute Geyser seems to have taken over where Porkchop left off. Misty water eruption to about 8 feet – spraying water on the trail.
30701 09 Jul 1989 @ 1200 --- research-mab 7/9/1989 - no time noted - Minute Geyser is showing periodic activity. It was not erupting when first observed, then began its usual 1- 1 ½ foot burst which increased to a maximum of 3-4 ft. Water began overflowing & then the eruption ended. All this in about 5 minutes, slight steam phase
7588 05 Feb 1989 @ 0000 05 Feb 1989 @ 2359 JSJ Minute Geyser active for ~2 minutes. No specific time recorded.
7646 05 Feb 1989 @ 1800 --- research-mab 2-05-89 Minute Geyser – active ~2m
7570 22 Jan 1989 @ 1800 --- research-mab 1-22-89 Minute Geyser – Dormant. Water up ~5-6cm from floor of vent as it was on 1-16-89.
7566 16 Jan 1989 @ 1800 --- research-mab 1-16-89 Minute Geyser – Dormant- at least for several hours. No splashing what-so-ever. I have never seen this state of inactivity before (since 1970). {generic afternoon time}
30818 06 Aug 1988 @ 1200 --- research-mab 8/6/1988 - no time noted - Minute Geyser – spluttering away- bursts of 6-12”
33421 03 May 1986 @ 1213 --- research-mab May 3, 1986 Minute Geyser - A dual vent eruption was happening at 12:13 when I arrived. Both vents were playing 3 feet high and pouring a lot of water into the cove in front of the sinter platform they sit on.
30942 03 Jul 1985 @ 1200 --- research-mab July 3 1985 – no time noted - Minute 203ºF at erupting vent. 144ºF at pool w. of erupting vent. Continually erupts 1-2 ft high.
7612 11 Feb 1984 @ 1800 --- research-mab 02/11/1984 Minute Geyser – Continuous spouting 1-1.6m, black beaded sinter, around SE vent.
31035 08 Jan 1983 @ 1200 --- research-mab January 8 1983 - no time noted - Temps from Backbasinland… Minute Geyser 200º splashing violently 3 ½’ Old Vent 136º green algae rimmed
31358 31 Jul 1982 @ 1200 --- research-mab 7/31/1982 - no time noted - Minute “New vent” 202º splashing to 2’. “Old vent” 150º constantly bubbling & no algae is growing in the vent.
31248 20 Feb 1982 @ 1200 --- research-mab February 20 1982 - no time noted - Minute Geyser 3’4’ splashing violently out of the new vent 202° . Old Vent 130° no green algae, bubbling occasionally.
31190 14 Jan 1982 @ 1200 --- research-mab January 14th 1982 - no time noted - Minute Geyser much more active than usual. New Vent 200º splashing constantly 2-3’ Old Vent 200º that’s right 200º! It has lost its dark green algae lining. It now has grey slightly turbid H20 & bubbles occasionally. The temp is up 60º-70º from its normal 132º-138º temperature range. Maybe good old Minute Geyser will have a comeback!
31578 15 Nov 1981 @ 1200 --- research-mab Nov 15 1981 – no time noted – {post-quake check} Minute Geyser 198° splashing 3-5’ = Old Vent 132° dark green/gray algae
31530 30 Aug 1981 @ 1200 --- research-mab Sunday August 30 1981 - no time noted - Minute splashing to 3’ 200° old vent dark green algae with continual small bubbles rising to the surface 138°
31437 02 Aug 1981 @ 1200 --- research-mab Sunday August 2 1981 The Basin Wide Disturbance has occurred! - no time noted - Minute Geyser- 202º periodic quiet periods followed by usual 2-3’ splashing old vent – 136º unchanged – green-brown algae lining
31404 06 Jun 1981 @ 1200 --- research-mab Saturday June 6 1981 - no time noted - Minute Geyser – perpetual eruption 2 to 8 feet, overflowing 204ºF. Old vent, dingy green algae, overflowing 134ºF
31780 20 Sep 1980 @ 1200 --- research-mab Saturday September 20 1980 - no time noted - Minute Geyser – erupting clear water 1-4 feet, overflowing 203ºF. Old vent green algae has been disturbed and partially torn off. Grey murky water 131º
31689 16 Aug 1980 @ 1200 --- research-mab Sat Aug 16 - no time noted - Minute Geyser – Erupting continuously 1-3 feet 203°F. Overflow into old vent – 136°FF – lots of green algae- overflow out of old vent.
31671 17 Jul 1980 @ 1200 --- research-mab July 17, 1980 - no time noted - Minute Geyser – active vent spraying 2 to 5 feet., 204ºF Old vent filled with algae, 148ºF
31643 09 Jun 1980 @ 1200 --- research-mab June 9 1980 - no times - observations made over the week and entered on 9th - Minute Geyser – Dark geyserite spines abound, spraying 1 to 5 feet. 202ºF, older vent filled with dark green and orange algae, but has a temperature of 146ºF. Awfully hot for acidic algaes!
32015 28 Sep 1979 @ 1200 --- research-mab September 28 1979 - no time noted - Minute Geyser – 201ºF ie, old vent 128º gentle bubbling
31971 21 Sep 1979 @ 1200 --- research-mab Friday September 21 1979 - no time noted - More end of summer changes! Minute Geyser – perhaps a little more active hitting 2 to 4 feet. Clear water. 200ºF. Old vent with constant gentle bubble. 132ºF
31859 05 Jul 1979 @ 1200 --- research-mab July 5 1979 - no time noted - Minute Geyser – active vent 201º spraying water to 3 ft. Old vent- few bubbles 143ºF
32200 10 Sep 1978 @ 1200 --- research-mab 09/10/1978 - no time noted - Changes in the Back Basin do not seem as extensive as changes noted yesterday in Porcelain Basin. Minute Geyser – perpetually spouting – 200ºF
32119 05 Jul 1978 @ 1200 --- research-mab 07/05/1978 - no time noted - Minute – really spouting
32068 01 Apr 1978 @ 1300 --- research-mab Sat April 1 1978 - inferred approx time - Minute Geyser is sloshing but not playing above the lip of the vent.
32263 29 May 1977 @ 1000 --- research-mab Sunday May 29 - no time noted - morning - Minute Geyser was putting on a nice 2’ display while I was down there re-erecting a sign in the AM.
22232 10 Jul 1976 @ 1800 --- research-mab July 10 1976 no specific time noted New Feature between Monarch Geyser and Minute Geyser. The feature is east of the trail and as you face the runoff channel from Emerald Spring - - this new pool is to the right. Distance from trail is appropriately 30 feet. Water color is cloudy grey and it is hot.
32352 01 Jun 1976 @ 0846 --- research-mab June 1 1976 Minute Geyser 0846 – no splashing could be seen at all.
10866 27 Sep 1975 @ 1800 --- research-mab 09/27/1975 BRANCH SPRING {generic time} Overflow was also occurring periodically in circular spring next to Minute Geyser. The several intervals observed were ~ 2 min duration of filling (~20 sec), overflowing and draining (down about 3”). There was ~45 sec of quiescence between these periods of activity. However, there was some fluctuation of the durations of each section of activity.
5645 21 Aug 1975 @ 1800 --- research-mab 08/21/1975 Minute Geyser – same charcoal gray material scattered about its runoff area. But not nearly as widespread as it was after the June 30th quake. Algal mat still present. No change in its activity, but nearby vent has more bubbles rising to surface.
5639 20 Aug 1975 @ 1800 --- research-mab 08/20/1975 Minute- algae mat growing thicker all the time.
5623 01 Aug 1975 @ 1645 --- research-mab 08/01/1975 Minute Geyser in a very dry phase at 1645
5616 21 Jul 1975 @ 1800 --- research-mab 07/21/1975 Minute pouring out large quantities of water. Less active vent of Minute geyser has become totally clear & the green algae are returning.
32628 14 Jul 1975 @ 1200 --- research-mab 07/14/1975 - no time noted - Minute Geyser has cleared up almost completely as have Monarch and Palpitator.
32618 07 Jul 1975 @ 1200 --- research-mab 7/7/1975 - no time noted - Minute Geyser – runoff beginning to clear up. Geyser doesn’t seem to spout as high.
6196 01 Oct 1973 @ 1130 --- research-mab 10/01/1973 1130 ish The larger (inactive) vent at Minute Geyser continues to give off more water as is indicated by greater prevalence of algae.
32863 27 Sep 1973 @ 1200 --- research-mab Sept 27 1973 - no time noted - Temperatures taken today Minute Geyser erupting vent 201 eruption beginning. = Minute Geyser “spring” vent 150
6141 13 Sep 1973 @ 0900 --- research-mab 1973-09-13 Back Basin 900am - Green color algae very noticeable near Minute and is starting to appear in runoff channel to the east as well as the west side.
33172 16 May 1972 @ 1200 --- research-mab May 16 1972 - no time - 199F – active all Summer. - Erupts about 1 to 1½ feet for about 11 mi, Time between eruption is about 12 mi.
6311 14 May 1972 @ 1800 --- research-mab 05/14/1972 The following geysers have been seen erupting since I arrived last night: Ledge 6-10’, Iris 2-3’, Little Whirligig 15’, Basin 1’-2’, Fan 4’-5’, Bear Den, Feisty, Fireball 2-3’, Minute 1’-2’, Blue 7-15’, Africa 25-35’, Vixen 7’-15’, Dr Morey’s Porkchop 3’-5’, Echinus 10’-40’, Steamboat 5-20’
34084 08 May 1972 @ 0830 --- research-mab Approx inferred time based on Rubble Geyser entries = MAY 5/8/1972 = 1972 R.A. Hutchinson handwritten pages found in former Geo Box 72] - Minute Geyser plays 1.5-2.5 feet occasionally 4’
33171 31 Jul 1971 @ 1200 --- research-mab July 31 1971 - no time - Three rocks taken out in June. Playing less than last year – water drains lower and takes longer to come up. Plays several times per hour – 92C (189F) The formation has a gray color more than last year.
33170 11 Aug 1970 @ 1200 --- research-mab June 1970 – no change, playing most of the time. Stops for several minutes about every 20 to 30 min (?) Rocks still in vent. = Aug 11 air 60F water 200F. The geyser is throwing water all the time, algae has grown into the runoff channel during late July and August.
33166 19 Aug 1969 @ 1200 --- research-mab 1969 – Plays for about 10 minutes about every 5 minutes. Aug 19 1969- no time - 200ºF 1 to 2 feet.
33169 02 Jun 1968 @ 1200 --- research-mab June 2, 1968 – playing at about 1 to 1.5 feet every 10 mi.
33168 12 Jul 1967 @ 1200 --- research-mab July 12 1967 200ºF
33167 22 Jun 1967 @ 1200 --- research-mab June 22 1967 - no time - 200ºF and a pH of 5 at 110ºF
10803 01 Jul 1933 @ 0000 --- research-mab Report for June 1933: Minute Man Geyser – eruptions possibly 15 per day lasting 15 minutes and consisting of spurts 25-50 ft high and spaced 30-45 seconds
10812 19 Sep 1931 @ 0000 --- research-mab Minute Man Geyser Sept. 1-19 Few and irregular eruptions. Height- 30 ft. Duration – about 4 min.
10819 31 Aug 1931 @ 0000 --- research-mab August 1931 Report: Minute Man Geyser Aug. 1-31 Plays several time per day at irregular intervals 4 min.
10824 01 Aug 1931 @ 0000 --- research-mab July 25-31 1931 Report: Minute Man Geyser (July 25-31) No eruptions observed. Slight steaming.
No attachments for this geyser.
Baseline does not exist.