Last Known Eruption
30d 6h 2m ago

Interval Statistics

Interval Count22
Min4m
Max37y 260d 28m
Mean1y 295d 4h 16m
Median21h 13m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
35078 10 Jun 2024 @ 1228 --- SantaFe108 Between cycles as I walked past, below overflow.
34244 19 Apr 2024 @ 1231 --- MAB clear light greenish water not in overflow - Branch started with immediate outwash - same observed on the way out @1817 - will get D and I another time
29043 22 Oct 2023 @ 1242 --- SantaFe108 Boiling and overflowing, not staying for cycle.
28844 17 Oct 2023 @ 1146 --- MAB low - watery opaque latte color - started 1147 w channels immediately filled
28700 07 Oct 2023 @ 1800 --- MAB moderate boil
28690 07 Oct 2023 @ 1229 --- MAB totally calm
28685 07 Oct 2023 @ 0908 --- MAB strong boil in progress
28641 05 Oct 2023 @ 1243 --- cb very low, muddy brown, slight bubble over vent.
28492 26 Sep 2023 @ 1625 --- MAB just starting - shoulder vents grumbly
27331 30 Jul 2023 @ 0724 --- EmilyW Another bubble shower event
27329 30 Jul 2023 @ 0720 --- EmilyW Bubble shower like behavior/eruption, 6 inch boiling and pushed to overflow. Period in nature
27305 28 Jul 2023 @ 2102 --- SantaFe108 Just about at overflow, light center boiling. Not saying for the cycle.
27279 28 Jul 2023 @ 1248 --- SantaFe108 In overflow and boiling, did not stay to finish cycle.
27221 25 Jul 2023 @ 0927 --- mhreed Still a cloudy/milky brown; boiling has decreased.
27180 23 Jul 2023 @ 1511 --- mhreed Cloudy brown. Moderate to light boil.
26419 17 Jun 2023 @ 1612 --- MAB light boil then boom heavy boil with channel filled asap
25522 18 May 2023 @ 1523 --- MAB quiet and below overflow before quick start & instantaneous overflow
25475 15 May 2023 @ 2010 --- ypcaribou Appears to still be cycling like last fall. Cloudy ocre water.
25048 27 Feb 2023 @ 1501 --- MAB not in ovfl on arrival - then it picked up - high mounds of snow somewhat obscuring view
24605 31 Oct 2022 @ 1249 --- MAB low and a few bubbles that quieted - prob just finished a cycle
24568 30 Oct 2022 @ 1416 30 Oct 2022 @ 1425 ypcaribou 1416 first bubbles. 1420 no bubbles, low, rising. 1422 little bubbles and climbing to OF. 1424 in OF and 1st bubbles.
24592 30 Oct 2022 @ 0858 --- MAB just ending a cycle - didn't stay for the next push
24539 29 Oct 2022 @ 0841 29 Oct 2022 @ 0845 MAB low quiet pool @0841 - 1st bubble @0843 w slight outwash- heavy boil commenced @1:31 after 1st bubble with immediate heavy outflow - dropped out of ovfl @3:55 - next 1st bubble @0849 - it got quiet this time for a few seconds before launching into the heavy boil @0855 - so generally a 6min cycle with D ~4min if timing start from 1st bubble - if timing heavy boil to end D=approx 2.5 min
24467 21 Oct 2022 @ 1815 --- MAB low - quiet - heavy boil didn't start til 1819
24413 15 Oct 2022 @ 0829 --- MAB light bubbles then into heavy doming boil up to 8inches within the same minute
24379 14 Oct 2022 @ 1816 --- MAB IE heavy boil with lots runoff
24385 14 Oct 2022 @ 1139 --- MAB low with no ovfl on arrival - 1141 game on with instantaneous outwash
24309 07 Oct 2022 @ 0904 07 Oct 2022 @ 0910 MAB low with tiny bubbles run off wet but not steaming 0904 looks like it's just finishing - quiet @0905 - increase 0906 - heavy boil with overflow asap 0908 - off again 0910
24262 05 Oct 2022 @ 1420 --- cb Started at 1420 with overflow & roiling boil, murky gray on color. ended @ 1421
24100 25 Sep 2022 @ 0819 25 Sep 2022 @ 0825 MAB possibly just ending upon arrival w tiny bubbles from low water level - sm bubbles 0821 a tad stronger for 30s then quiet - heavy surge 0823 for 1m59s - seems not as heavy as yesterday but could be the foggy visibility
24056 24 Sep 2022 @ 1544 --- MAB low and quiet but can't stay
24065 24 Sep 2022 @ 1137 --- MAB bubbly but not the strong heavy boil - dropped out of ovfl 1138 - super quiet no bubbles @1140 - teensy bubbles resume 1141 - heavy boil comes on strong @1143 for 1m50s
24035 23 Sep 2022 @ 1607 --- MAB low and quiet w tiny bubbles - 1609 heavy boil commences with instantaneous outwash - boil stops 1610 - no bear tracks visible between Monarch & Branch
24046 23 Sep 2022 @ 0850 --- MAB Full w tiny bubbles but not a lot of overflow - 0851 big bulging boil began w immediate outwash
23969 20 Sep 2022 @ 1849 20 Sep 2022 @ 1904 ypcaribou 1849 on arrival, constant rolling "boil" with rippling all the way to edge of pool. Hearing a hissing or sizzly noise from nearby, I think to right of pool. 1853, water dropped below runoff channel. 1854 rising into runoff. Pool stopped bubbling and started a full sizzle. 1855 huge roil up that led to constant wave action to edges and into overflow. Looks like a bowl of soft Jello being shaken. 1857 back to center bubble and dropped out of overflow. 1900 refill starting. 1901 bubbling stopped and jiggle started. 1902 full on bubbling jiggle and into overflow. This thing is cool to watch! Oh, color is blue with yellow pool so green. 1904 back below overflow. At no time did it drain - drop below overflow means out of the runoff channel. That's as far as it dropped. Headed back to Cistern!
23643 07 Sep 2022 @ 1004 --- MAB full but not flowing - may have just quieted
23393 24 Aug 2022 @ 1751 --- MAB well below overflow - light center boil south shoulder vents glurging
23398 24 Aug 2022 @ 0905 --- MAB quite agitated- when steam cleared could see a wide roil
23333 21 Aug 2022 @ 1222 21 Aug 2022 @ 1250 ypcaribou Water is opaque, dirty beige. Small bubbling in middle causing ripples to edge. Just below overflow to "V" that leads to runoff channel. Feature to left with 2 holes is gurgling and burping but no water seen. 1226 Large roiling a foot or so in diameter began, splashing to a foot, pool filled fully and overflowed. Returned to quiet by 1228. 1230 filling. 1231 roiling and splashing to overflow. Dropped. 1236 fill and roil and splash. Overflow. Calm and drop by 1238. 1240 filling, 1241 start, overflow, 1242 calm and drop, 1243 water down from V. 1245 filling, 1246 start, calming 1247. Droppong. Out of V at 1249. When I say drop, its just to top of pool edge down from V for overflow. Does not drain. Thunder heard, dark clouds rolling in. Up the hill I go!
23257 18 Aug 2022 @ 0916 --- MAB low & fairly quiet - faint boil
22991 02 Aug 2022 @ 1343 --- cb overflowing with a vigorous boil. Feature 6' to the left is gurgling, no visable water.
22889 27 Jul 2022 @ 1846 --- MAB low and quiet - moved on quickly
22900 27 Jul 2022 @ 1219 --- MAB dead calm then started asap immediately in overflow
22864 26 Jul 2022 @ 1248 --- cb color is a light milky greenish color with a weak boil and just below overflow. Feature with 2 vents that resemble Bear Claw, toward Trio sink area, are gurgling and thunking. no visable water
22662 17 Jul 2022 @ 1507 --- MAB steady boil w strong ovfl
22268 01 Jul 2022 @ 1912 --- MAB low - quiet - no outwash
22273 01 Jul 2022 @ 1347 --- MAB heavy boil watery green brown
22244 30 Jun 2022 @ 1209 --- cb pool low, not overflowing, no boil
22157 27 Jun 2022 @ 1839 --- MAB violent boil
22163 27 Jun 2022 @ 1226 --- MAB heavy boil w good runoff - light brown color
22083 23 Jun 2022 @ 1611 --- cb vigorous boil, muddy color, overflowing
21700 03 Jun 2022 @ 1930 --- MAB light boil with waves - barely in overflow
21706 03 Jun 2022 @ 1210 --- MAB WAY low - fairly calm
21479 25 May 2022 @ 0824 --- TSBryan quiet, slightly below overflow
21440 23 May 2022 @ 1851 --- MAB heavy center boil w good flow
21453 23 May 2022 @ 1300 --- MAB below ovfl and just pulsing into the channel with only light center convection when boil began - pushing waters down the channel immediately
21340 17 May 2022 @ 0844 --- mhreed Murky grey, slight boil, just at overflow.
21291 15 May 2022 @ 1927 --- MAB stronger boil than at 1300 but still no overflow - either low again or still
21295 15 May 2022 @ 1258 --- MAB low - watery green - very few bubbles - no flow
21234 11 May 2022 @ 1928 --- MAB trickle of ovfl down the channel but pool is low and quiet
21242 11 May 2022 @ 1250 --- MAB murky green - below overflow & quiet
21196 06 May 2022 @ 1933 --- MAB mild center boil just inching to overflow- when suddenly strong center boil commenced and strong flow went down the channel - got FLIR - ok that was fun and good timing
21203 06 May 2022 @ 1307 --- MAB way low w bubbles - receiving cool waters from old road grade across the trail
21089 26 Apr 2022 @ 1851 --- MAB low with only quiet convection
21101 26 Apr 2022 @ 1301 --- MAB very low - well below ovfl - a few tiny bubbles
21026 18 Apr 2022 @ 1303 --- MAB steady boil - in ovfl - dirty green color
20324 06 Nov 2021 @ 1609 --- MAB another walkup to a calm pool with a few bubbles - while standing there heavy boil begins
20336 06 Nov 2021 @ 0815 --- MAB light boil - pool below overflow
20292 04 Nov 2021 @ 1639 --- MAB calm - just below overflow- as I wrote it down I could see overflow just creeping down the channel - just a few bubbles at that point
20309 04 Nov 2021 @ 0836 --- MAB full w slight ovfl - light bubbles - 0837 vigorous center boil began
20243 31 Oct 2021 @ 1707 --- MAB wet ovfl - full with convection but no boiling
20259 31 Oct 2021 @ 0842 --- MAB full but not boiling w no overflow upon arrival - bpil started tail end of same minute
20195 29 Oct 2021 @ 1637 --- MAB light boil - well below overflow
20201 29 Oct 2021 @ 0857 --- MAB light boil - slight ovfl
20166 28 Oct 2021 @ 1709 --- MAB a tad lower not quite in overflow
20165 28 Oct 2021 @ 1529 --- MAB light boil slight overflow
20102 24 Oct 2021 @ 1744 --- MAB center boil some ovfl
20114 24 Oct 2021 @ 0929 --- MAB Quiet no boil - pool edges showing 6in to 1ft - no ovfl obviously
20082 22 Oct 2021 @ 1735 --- MAB light center boil - not quite reaching overflow
20092 22 Oct 2021 @ 0859 --- MAB quiet - no boil - no overflow
20016 17 Oct 2021 @ 1726 --- MAB overflow - convection then boil started w my walkup {water visible in the 2nd hole on the shoulder}
20028 17 Oct 2021 @ 0912 --- MAB center boil w overflow - {breakout on south shoulder audible boil but no water visible }
19947 10 Oct 2021 @ 1658 --- MAB light center boil - brownish green color
19954 10 Oct 2021 @ 0924 --- MAB busy center boil - gray green color
19916 05 Oct 2021 @ 1752 --- MAB Strong loud boil with heavy waves heard but not seen at 0851 - at 1752 observed moderate boil - pool was a brownish green color
19907 03 Oct 2021 @ 1325 --- ypcaribou Vigourous roil in middle. Slight overflow. Milky but transparent light sea glass green.
19908 03 Oct 2021 @ 0736 --- ypcaribou Mostly calm pool with gumball-sized bubbles floating up. Possibly just below overflow but too steamy to tell. Slightly milky but trsnsparent light sea glass green
20494 20 Jun 2012 @ 1200 --- research-mab 6/20/2012 “Branch Spring” by Minute Geyser murky; clear yesterday [generic day time]
20495 24 Jun 2000 @ 1200 --- research-mab 6/24/2000 Dr Nordstrom - USGS doing research at Minute and pool next to it (Branch Spring?) - 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 [generic day time]
20496 20 Sep 1998 @ 1200 --- research-mab 9/20/1998 Branch Spring 172ºF (not as hot as I thought) [generic day time]
20497 13 Sep 1998 @ 1200 --- research-mab 9/13/1998 The spring (I believe unnamed) just beyond Minute appears to be superheated. I’ll measure it tomorrow. {see 9-30 entry mab} {Sketch map with arrow “This spring is named “Branch Spring”} [generic day time]
20528 07 May 1992 @ 1517 --- research-mab 5/7/92 {mushroom in log} – 1517 boiling steadily with a strong overflow
20527 26 Apr 1992 @ 1200 --- research-mab 4/26/1992 {mushroom in log} – quiet, murky [generic day time]
20526 16 May 1991 @ 1200 --- research-mab (5/16/91) Note about Minute Geyser includes ‘lower vent completely filled with water making a pool that goes nearly to adjacent Mushroom Pool’ confirming mis-identification of mushroom thru 1998 [generic day time]
20498 06 Aug 1988 @ 1200 --- research-mab 8/6/1988 Pool to S of Minute - milky blue in color; gentle boiling in center [generic day time]
20525 24 Aug 1987 @ 1200 --- research-mab 8/24/1987 {mushroom in log} - greenish color, lots of boiling in the center of the pool. It is milky so that I can’t see into the water more than 1’ or so [generic day time]
20524 14 Sep 1984 @ 1200 --- research-mab 9/14/1984 seen erupting [no duration of observation - generic day time]
20523 13 Sep 1984 @ 1200 --- research-mab 9/13/1984 seen erupting [no duration of observation - generic day time]
20522 11 Sep 1984 @ 1200 --- research-mab 9/11/1984 light boil only [no duration of observation - generic day time]
20521 09 Sep 1984 @ 1312 --- research-mab 9/9/1984 seen erupting
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