Last Known Eruption
2y 315d 9h 4m ago

Latest Eruptions

Eruption DurationInterval
05 Aug 2022 @ 0951283d 20h 29m
25 Oct 2021 @ 1322 ie6d 10m
19 Oct 2021 @ 1312 ie

Interval Statistics

Interval Count2
Min6d 10m
Max283d 20h 29m
Mean144d 22h 19m
Median144d 22h 19m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
39835 13 Jun 2025 @ 0856 --- MAB full above light band - boil morphed from right to center when it was visible
39763 08 Jun 2025 @ 1852 --- MAB full above light band - perfect lighting to see full-pool agitation
39748 08 Jun 2025 @ 1447 --- MAB high and above light band - NBK3 splashing clear water
39691 05 Jun 2025 @ 1909 --- MAB high with center boil
39669 05 Jun 2025 @ 0841 --- MAB full and full of steam - NBK3 Spiny Springs IE from at least 3 holes w clear water
39568 31 May 2025 @ 0907 31 May 2025 @ 0942 ypcaribou Still or again full and bubbling. Palp empty and dry. Moonlight and Spiny complexes both audibly bubbling. After watching for half an hour, the water level hasnt gone up or down measurably.
39549 31 May 2025 @ 0650 --- ypcaribou Full with mucho constant roiling in middle. Exposed sinter wet but not gray. Has a continuous boil rather than periodic splashes. Palp is empty. Killdeer walking around in grass clumps between F& P.
39487 29 May 2025 @ 1658 --- MAB quite full center boil
39476 29 May 2025 @ 0906 --- MAB full w strong center boil - visible noisy splashes from NBK3 Spiny Springs behind
39329 24 May 2025 @ 1524 --- MAB water level top of light band - NBK3 Spiny Springs visible sm splashes above ground
39301 24 May 2025 @ 0839 --- MAB boiling - low below light band
39244 21 May 2025 @ 1649 --- MAB coming up - a little fuller about halfway into the light band
39227 21 May 2025 @ 1354 --- MAB might be up a bit but basically same
39218 21 May 2025 @ 1013 --- MAB same as earlier
39215 21 May 2025 @ 0902 --- MAB low w strong right side boil- did not see or hear any splashing from NBK3 Spiny Springs
38966 10 May 2025 @ 1818 --- MAB even lower below light band with consistent right side pointy boil
38945 10 May 2025 @ 1606 --- MAB below light band
38940 10 May 2025 @ 1250 --- MAB overfull
38931 10 May 2025 @ 0859 --- MAB low - steamy but audible boils
38808 03 May 2025 @ 1817 --- MAB still high
38787 03 May 2025 @ 1417 --- MAB dropped below light band
38777 03 May 2025 @ 1019 --- MAB super full full - R boil morphing to center boil - NBK3 Spiney Springs audible with visible splashing of clear water
38617 25 Apr 2025 @ 1112 --- MAB Strong right boil - waves lapping above light band
38519 19 Apr 2025 @ 1552 --- MAB same water level with strong white center boil
38514 19 Apr 2025 @ 1405 --- MAB steady right side boil - water level below light band - {steam only visible at Spiney Springs NBK3 - no splashing no audible}
38419 10 Apr 2025 @ 1254 --- SantaFe108 Center boil, ~2 in below the light band.
38276 23 Feb 2025 @ 1450 --- K.Cooper at light colored band. 1ft boil in center.
38013 15 Dec 2024 @ 1624 --- K.Cooper at the top of the white band
38005 15 Dec 2024 @ 1529 --- SantaFe108 Weak center boil, just about at the top of light band.
37922 08 Nov 2024 @ 1320 --- SantaFe108 ~2in below dark band with a lazy center boil.
37879 31 Oct 2024 @ 1618 --- SantaFe108 6in below dark band with center boil.
37871 31 Oct 2024 @ 1104 --- MAB full w strong boil - Spiney Springs actively splashing
37826 29 Oct 2024 @ 1320 --- MAB below lite band w strong center boil w occasional shift to right side boil then back
37811 27 Oct 2024 @ 1653 --- MAB Full - strong boil
37790 27 Oct 2024 @ 0946 --- MAB center boil 8in down = NBK-3 Spiny Springs noisily splashing above ground level {quick obs while Vixen IE}
37741 24 Oct 2024 @ 1628 --- SantaFe108 ~4in below dark band, lazy center boil.
37686 22 Oct 2024 @ 1806 --- MAB on the rise just above light band - strong and wide center boil
37590 15 Oct 2024 @ 1822 --- MAB up, near full - strong boil
37587 15 Oct 2024 @ 1523 --- MAB Right side boil - water below light band {NBK3 Spiney Springs to west splashing clear water visible from trail}
37493 10 Oct 2024 @ 1215 --- SantaFe108 2" below dark band m, center-right boil.
37361 03 Oct 2024 @ 1134 --- SantaFe108 3in below light band, weak right side boil.
36167 29 Jul 2024 @ 1338 --- cb low pool with a 1' witches hat roiling boil
35413 21 Jun 2024 @ 1418 --- nails Water above white line, an inch or two if dark band exposed. Bubbling with occasional noisy steam splash.
35146 12 Jun 2024 @ 1143 --- CrisG about 3" of light band showing. right sided boil up to almost a foot at times
35080 10 Jun 2024 @ 1232 --- SantaFe108 Below both light and dark band, right side boil to ~1 ft.
34966 07 Jun 2024 @ 1139 --- CrisG light bubbling. water a couple inches above the lighter band
34706 26 May 2024 @ 0905 --- ypcaribou Time apptoximate as my phone died at Porkchop. Water level down about an inch below light line. Top of pool dried to gray at NW edge. True surging to at least a foot & across a larger area than before. Pyramid bursts. Likely still dropping.
34684 26 May 2024 @ 0652 --- ypcaribou Water level at top of light band.. Bubbling nicely. Occ splash to 6"
34578 16 May 2024 @ 1732 --- cb Water level a few inches below pools inner rim. roiling boil
34272 19 Apr 2024 @ 1813 --- MAB down a foot since mid-day - couldn't see the lite band due to lighting - strong wide boil with good waves
34246 19 Apr 2024 @ 1238 --- MAB WAY FULL - steady center boil with one glub more to the left - no water seen at NBK3 Spiny Springs behind Fearless - Palpitator down no water and no steam visible
33917 24 Jan 2024 @ 1435 --- JR Low, strong boil.
29313 31 Oct 2023 @ 1641 --- MAB a tad fuller -walked up to strong right boil which shifted to big center bulge - waves!
29306 31 Oct 2023 @ 1322 --- MAB above band - mostly right side boil
29041 22 Oct 2023 @ 1240 --- SantaFe108 Full with center boil, NBK-3 Spiny Springs Complex has 3 visible spouters ie.
28980 21 Oct 2023 @ 1541 --- JR Full, boiling. Feature behind had water pushing about a foot above ground level in small bursts out of 3 separate locations.
28935 20 Oct 2023 @ 1641 --- MAB full w center boil- NBK3 Spiny Springs Complex seen IE erupting clear water well above ground level
28912 20 Oct 2023 @ 1122 --- MAB top of light band - NBK3 splashing clear water well above ground level
28890 19 Oct 2023 @ 1813 --- ypcaribou below white bsndinto dark just below that. bubbling vigourously and non stop! water appears clearish. ssc beyond splashing to a ft or so out of 2 vents
28854 17 Oct 2023 @ 1632 --- MAB fuller than full -
28846 17 Oct 2023 @ 1150 --- MAB low - below light band
28791 14 Oct 2023 @ 1611 --- MAB a little lower - multi bubble boils
28785 14 Oct 2023 @ 1333 --- MAB very full - right side boil shifting a bit center - NBK3 Spiny Springs group audible but no visible splashes
28746 13 Oct 2023 @ 1140 --- JR Low and boiling...
28698 07 Oct 2023 @ 1758 --- MAB about the same as last walkby - NBK3 Spiny Springs audible but didn't notice airborne water
28691 07 Oct 2023 @ 1231 --- MAB still about 1in down from high water but 1-2in above light band
28689 07 Oct 2023 @ 1018 --- MAB Filling - above light band but not to the high water level
28686 07 Oct 2023 @ 0912 --- MAB quite low - not a big boil but when observed again from Palp area stronger pointy boil
28640 05 Oct 2023 @ 1240 --- cb a few inches below high water rim with a vigorous boil
29682 01 Oct 2023 @ 1000 --- research-mab 1000am Fearless low & boiling. Palpitator full and palpitating - third feature in back audible splashing in crevasse {<- Spiny Springs NBK 3 mab}
28599 30 Sep 2023 @ 1700 --- MAB super full - 2 point boil - also NBK Spiny Springs Group IE w visible water ~ neato
28596 30 Sep 2023 @ 1410 --- MAB low pool strong right side boil
28561 30 Sep 2023 @ 0736 --- ypcaribou Quite full and mucho bubbling on arrival. NBK Spiny Springs Group IE w visible water.
28556 29 Sep 2023 @ 1059 --- novakg Boiling from main vent.
28493 26 Sep 2023 @ 1630 --- MAB just below light band
29684 11 Sep 2023 @ 1430 --- research-mab 9/11 230 pm Palpitator dry. Fearless very full and active.
28017 04 Sep 2023 @ 1700 --- cb very low water level with a witches hat boil
27846 29 Aug 2023 @ 0955 --- cb pool is high. well (10"-12") above the inner rim with a roiling boil in the center
27324 30 Jul 2023 @ 0734 --- ypcaribou Water level at top of white line. Boiling vigorously. Palp empty!
27303 28 Jul 2023 @ 2100 --- SantaFe108 Above light band with center boil.
27281 28 Jul 2023 @ 1251 --- SantaFe108 Well below light band, very weak center boil.
29699 18 Jul 2023 @ 1730 --- research-mab 7/18 - Fearless is full {no time} - Vixen no activity. - {same date} - 5:30 Fearless full
26872 06 Jul 2023 @ 2025 --- nails Gently boiling, above light line
26841 04 Jul 2023 @ 1701 --- MAB inch or so above light band
26843 04 Jul 2023 @ 0950 --- MAB below light band - pointy right side boil morphing to center boil
29692 04 Jul 2023 @ 0930 --- research-mab 7/4 9:30 am Minute Geyser and Palpitator looking great today, full of boiling water. Fearless sporting a rolling boil
28754 27 Jun 2023 @ 1220 --- research-mab 6/27 Fearless water level low (1220 pm)
29688 24 Jun 2023 @ 1015 --- research-mab 6/24 1000-1100 – Fearless in and out of boiling, vigorous, water level mid Palpitator full & palpitating
26504 20 Jun 2023 @ 1259 --- SantaFe108 Below light band with center boil.
26426 17 Jun 2023 @ 1839 --- MAB below light band - maybe smidge lower than earlier - light boil- didn't dally
26421 17 Jun 2023 @ 1616 --- MAB below light band - right side boil
26403 17 Jun 2023 @ 1502 --- SantaFe108 ~10 inches below dark band with center boil.
26225 10 Jun 2023 @ 1510 --- CrisG water approx 1-2" below light band . right sided boil
26201 09 Jun 2023 @ 1522 --- MAB just above light band w right side boil
25869 28 May 2023 @ 2016 --- SantaFe108 Water level well above light band with only light center boiling.
25655 21 May 2023 @ 1406 --- SantaFe108 Water level ~8 inches below light band with center boiling <1 foot tall.
25536 18 May 2023 @ 1745 --- MAB water level dropped to just above light band - strong boil - I did see and hear 1 vent in Spiney Springs ie this time going by
25523 18 May 2023 @ 1527 --- MAB way full well above white band - fairly quiet then boil resumed - nothing visible or audible from NBK5 Spiney Springs Group
25471 15 May 2023 @ 2000 --- ypcaribou Continuous boiling with regular surges a foot or so tall. Pool maybe at half. Not sure if going up or down and sun almost below horizon so not sticking around to find out.
25050 27 Feb 2023 @ 1507 --- MAB Full! erratic center boil - {also NBK5 Spiny Springs Complex west of it full and splashy with visible water - better view from 3ft up on snow but water still visible when I crouched down}
No attachments for this geyser.
Baseline does not exist.