Last Known Eruption
121d 10h 49m ago

Latest Eruptions

Eruption DurationInterval
14 Apr 2025 @ 1105 E maj69d 10h 9m
03 Feb 2025 @ 2356 E maj72d 6h 26m
23 Nov 2024 @ 1730 ns maj47d 10h 2m
07 Oct 2024 @ 0828 maj7m 83d 17h 26m
15 Jul 2024 @ 1502 maj21m 46d 13h 18m
30 May 2024 @ 0144 maj56d 7h 40m
03 Apr 2024 @ 1804 E maj37d 12h 57m
26 Feb 2024 @ 0407 E maj57d 9h 4m
30 Dec 2023 @ 1903 E maj47d 12h 47m
13 Nov 2023 @ 0616 E maj35d 16h 30m
08 Oct 2023 @ 1446 maj15m 43d 20h 45m
25 Aug 2023 @ 1801 maj77d 4h 39m
09 Jun 2023 @ 1322 maj8-10 min33d 10h 55m
07 May 2023 @ 0227 E maj56d 21h 31m
11 Mar 2023 @ 0356 E maj41d 13h 19m
28 Jan 2023 @ 1437 E maj23d 1h 11m
05 Jan 2023 @ 1326 E maj29d 16h 51m
06 Dec 2022 @ 2035 E maj31d 8h 22m
05 Nov 2022 @ 1313 E maj47d 22h 3m
18 Sep 2022 @ 1510 maj~10m 89d 23h 45m
20 Jun 2022 @ 1525 maj~5m 10d 3h 57m
10 Jun 2022 @ 1128 maj3m 18d 2h 43m
23 May 2022 @ 0845 maj42m 19d 4h 45m
04 May 2022 @ 0400 E maj34d 10h 46m
30 Mar 2022 @ 1714 E maj26d 14h 31m
04 Mar 2022 @ 0143 E maj17d 9h 47m
14 Feb 2022 @ 1556 E maj22d 1h 16m
23 Jan 2022 @ 1440 E maj38d 13h 54m
16 Dec 2021 @ 0046 E maj21d 50m
24 Nov 2021 @ 2356 E maj12d 18h 54m
12 Nov 2021 @ 0502 E maj18d 3h 54m
25 Oct 2021 @ 0208 E maj11d 13h 24m
13 Oct 2021 @ 1244 maj11m 14d 23h 18m
28 Sep 2021 @ 1326 maj6m 17d 6h 47m
11 Sep 2021 @ 0639 maj1h 6m 65d 5m
08 Jul 2021 @ 0634 maj19m 37d 18h 51m
31 May 2021 @ 1143 maj6m 26d 11h 41m
05 May 2021 @ 0002 E maj11d 15h 5m
23 Apr 2021 @ 0857 ns maj6d 18h 23m
16 Apr 2021 @ 1434 maj11d 15h 6m
04 Apr 2021 @ 2328 E maj8d 10h 27m
27 Mar 2021 @ 1301 E maj9d 9h 17m
18 Mar 2021 @ 0344 E maj14d 7h 44m
03 Mar 2021 @ 1900 A maj9d 23h 40m
21 Feb 2021 @ 1920 E maj18d 17h 19m
03 Feb 2021 @ 0201 E maj21d 17h 3m
12 Jan 2021 @ 0858 E maj9d 15h 58m
02 Jan 2021 @ 1700 ns maj13d 4h 46m
20 Dec 2020 @ 1214 E maj8d 15h 32m
11 Dec 2020 @ 2042 E maj12d 6h 5m
29 Nov 2020 @ 1437 E maj9d 4h 25m
20 Nov 2020 @ 1012 E maj9d 4h 7m
11 Nov 2020 @ 0605 E maj7d 16h 32m
03 Nov 2020 @ 1333 E maj7d 11h 51m
27 Oct 2020 @ 0242 E maj7d 4h 1m
19 Oct 2020 @ 2241 E maj5d 21h 30m
14 Oct 2020 @ 0111 maj8d 4h 6m
05 Oct 2020 @ 2105 maj23m 9d 10h 30m
26 Sep 2020 @ 1035 maj17m 9d 22h 51m
16 Sep 2020 @ 1144 maj1h 17m 6d 20h 44m
09 Sep 2020 @ 1500 maj13m 7d 18h 26m
01 Sep 2020 @ 2034 maj40m 6d 2h 58m
26 Aug 2020 @ 1736 maj24m 6d 14h 36m
20 Aug 2020 @ 0300 maj5d 11h 31m
14 Aug 2020 @ 1529 maj31m 4d 16h 23m
09 Aug 2020 @ 2306 maj6d 13h 9m
03 Aug 2020 @ 0957 maj36m 4d 8h 49m
30 Jul 2020 @ 0108 maj5d 12h 7m
24 Jul 2020 @ 1301 maj3m 5d 1h 20m
19 Jul 2020 @ 1141 maj33m 5d 15h 37m
13 Jul 2020 @ 2004 maj22m 4d 9h 17m
09 Jul 2020 @ 1047 maj43m 5d 20h 32m
03 Jul 2020 @ 1415 maj26m 4d 12h 46m
29 Jun 2020 @ 0129 maj5d 13h 47m
23 Jun 2020 @ 1142 maj14m 4d 18h 14m
18 Jun 2020 @ 1728 maj3m 5d 18h 48m
12 Jun 2020 @ 2240 E maj4d 5h 3m
08 Jun 2020 @ 1737 maj28m 5d 1h 45m
03 Jun 2020 @ 1552 maj26m 3d 9h 29m
31 May 2020 @ 0623 maj1h 0m 7d 15h 16m
23 May 2020 @ 1507 E maj3d 18h 56m
19 May 2020 @ 2011 E maj5d 15h 55m
14 May 2020 @ 0416 E maj6d 3h 11m
08 May 2020 @ 0105 E maj10d 8h 44m
27 Apr 2020 @ 1621 E maj16d 23h 34m
10 Apr 2020 @ 1647 E maj8d 13h 6m
02 Apr 2020 @ 0341 E maj8d 6h 24m
24 Mar 2020 @ 2117 E maj9d 1h 9m
15 Mar 2020 @ 2008 E maj9d 32m
06 Mar 2020 @ 1836 E maj6d 19h 4m
28 Feb 2020 @ 2332 E maj7d 21h 55m
21 Feb 2020 @ 0137 E maj8d 8h 14m
12 Feb 2020 @ 1723 E maj10d 20h 16m
01 Feb 2020 @ 2107 E maj9d 2h 42m
23 Jan 2020 @ 1825 E maj13d 22h 40m
09 Jan 2020 @ 1945 E maj13d 22h 11m
26 Dec 2019 @ 2134 E maj8d 5h 52m
18 Dec 2019 @ 1542 E maj9d 22h 49m
08 Dec 2019 @ 1653 E maj11d 16h 6m
27 Nov 2019 @ 0047 E maj9d 12h 18m

Interval Statistics

Interval Count100
Min3d 9h 29m
Max89d 23h 45m
Mean19d 17h 58m
Median10d 1h 48m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
41007 11 Aug 2025 @ 1853 --- MAB damp gravels in the trough with a thin stream flowing down mostly dry sinter - twigs observed on 5th still in place so not walking out that way
40882 07 Aug 2025 @ 1524 --- cb whole platform bone dry. Steerage bone dry. 15' angled & Vertical occational minors from NV. Saw nothing from SV in my brief stay
40871 06 Aug 2025 @ 1857 --- cb channels, Jabba, back shoulder bone dry! NV has occational 30' splashs that have some V. SV ...BLAH
40842 05 Aug 2025 @ 1900 --- MAB 1900 dry at steerage - dry channel - I examined some twigs and will look at them next time ... if they are still there! walkby middle platform 1904 one angled NV with voluminous steam afterwards - some pooled water downslope but channel mostly dry
40743 02 Aug 2025 @ 0630 02 Aug 2025 @ 0730 bhoppe Essentially all activity is from North Vent. The play is very wispy from NV and very short-lived. Some of the play was accompanied by a singular splash from South Vent. There is a small constant trickle of water down the runoff channel to steerage, and there is no shortage of gravel in the runoff.
40691 29 Jul 2025 @ 0819 --- bbev Occasional North vent, very little SV with only a trickle making it to steerage. Trough is completely full of gravel, with no sign of any significant, recent runoff. CS low with overflow only out the back channel.
40673 27 Jul 2025 @ 1845 --- MAB SB trough is damp but not wet - lots gravels resting on the shelve above - took a pic of some twigs to remind me to watch them if they wash away - all channels above as far as I could see were dry - middle platform walkby at 1849 channel dry with a thin strip of the yellow algae - saw one angled NV immediately followed by a steam push
40635 27 Jul 2025 @ 1518 --- Polly Graph is back up. Showing slower activity July 23-27. May be due to thermistor change about June 30th?? Possibly just the low part of the days long cycle. (At first looked like disturbance, but that doesn’t match observations & graphs of other features in the area. Minors of lesser volume maybe not showing up on graph?)
40621 26 Jul 2025 @ 1435 26 Jul 2025 @ 1544 Polly South Vent channel was damp with some pools of water on my arrival. The channel has some white up above & yellow orange in the pools down further. North Vent was nice & tall for 5 minors, with one quick burst being the tallest I’ve seen this year. One concerted minor had a duration of probably 30 seconds or so. South Vent was still mostly just splashes during concerted minors.
40562 22 Jul 2025 @ 2127 --- geyserG0bLiN Lotsss of big long splashes. Whispy like Ben said. Got a tall strong tease.
40561 22 Jul 2025 @ 1640 22 Jul 2025 @ 1655 Ben VL SV channel dry all the way up to the vent, except for a couple small puddles here and there. Lots of standing gravel in the channel that has not been washed away. Brief minors with lots of quiet in between. NV has a bit of height but it is wispy. Temp graphs updated today thankfully! :)
40464 18 Jul 2025 @ 1050 18 Jul 2025 @ 1315 Polly 3 “audible” runoff events. Some minors included some North center vertical or bounces. *Some minors are increasing in durations (over 30 s) but not necessarily good water level.* (This has been new this week & had increased during my observation time today.) Others are of short durations. South Vent minors are occasionally thicker & taller. North Vent is tall at times. (This has been similar to recent days.)
40449 17 Jul 2025 @ 1600 --- Polly My notes aren’t handy, but overall a bit of improvement from yesterday, with a couple of babbling brooks. One concerted minor had South Vent higher than it has been, but many minors still had just splashes from South. Emerald Spring is beautifully clear.
40437 16 Jul 2025 @ 1014 16 Jul 2025 @ 1330 Polly Best minor of this observation was at 1114. It had a longer duration than others I saw today (maybe around 20 seconds?) that created a babbling brook. It was followed by concerted minors at 1119 & 1121. I got about 80% concerted starts. North was tall at times which varied from decent water to others that were more airy. I saw an occasional bounce or center vertical of small to low medium height. Strong tall North quick burst at 1303. South channel wet or damp often, & sometimes flowing. There were 2 babbling brooks.
40394 13 Jul 2025 @ 1907 13 Jul 2025 @ 1915 MAB channel mostly dry w a little orange algae remaining- in this short time saw 2 N angled sprays and a shorter vertical North
40352 12 Jul 2025 @ 1230 12 Jul 2025 @ 1715 Polly Much quieter today. On arrival, South Vent’s runoff channel was wet at the top terraces & above, but a trickle below. I recorded minor starts the first hour, & got about 80% concerted minors. South was back to small minors. Most minors were of shorter durations, with only 2 lasting about 15 seconds. As the day went on, the action slowed and North minors often became more thin & farther between.
40331 11 Jul 2025 @ 1040 11 Jul 2025 @ 1515 Polly Improvement today. South Vent was stronger today. I saw 4 babbling brooks & 1 babbling+ - not quite a raging river. The cyanobacteria at the top of the channel has lightened from orange to more yellow. The channel has appeared to be at least damp all day, with flowing water much of the day. It was difficult to note how concerted the minor starts were due to steam & the windy day. Overall, minors were more frequent & of longer duration today than they had been earlier this week.
40320 10 Jul 2025 @ 0920 10 Jul 2025 @ 1420 Polly Still about 70% concerted minors (recorded 1320-1420). There was a nice minor in progress upon my arrival. South Vent’s runoff channel had fairly wide flowing runoff with that early minor, and continued to flow for well over an hour. South continues its seemingly slow progress, with one almost babbling brook at 1135. Between heavy billows of steam (humidity levels up this morning?) and wind, the view wasn’t as clear as usual today.
40309 09 Jul 2025 @ 1110 09 Jul 2025 @ 1445 Polly Pam & Bob saw a nice minor with a babbling brook at 1030 before my arrival. Improvement today from yesterday. North Vent continues to be more active than South. South Vent had some taller events, but still many were more like splashes. Minors were of varying lengths, but many were of short duration. I recorded during 2 periods. 11:10 - 12:10: About 75-80% concerted starts of minors. I saw several “bounces” from the center & also a couple center vertical that were taller than bounces. I noted that North Vent was tall a couple of times. There was one babbling brook. 1330 - 1430: This hour started out much quieter than the earlier one, but improved as the hour went on. About 70-74% of the minors had concerted starts. There were 2 somewhat audible runoffs & 1 babbling brook. North Vent’s center participated in some minors & had some good height ~6 times. There was one series at 1410 (that produced the babbling brook). South Vent was taller during 2 minors. (I thought maybe 20 feet??)
40295 08 Jul 2025 @ 1030 08 Jul 2025 @ 1415 Polly Overall, most minors of short durations. South channel wet on arrival, but dried as the day went on. South Vent had moments of a bit higher water than previous days, but still on the low side. North Vent has good height. Occasional North Vent minors with center vertical, but mostly (but not all) of short durations. 1355-1411 series of Concerted & NV minors with durations of a few seconds each that put some water down the SV channel.
40285 07 Jul 2025 @ 1311 07 Jul 2025 @ 1411 Polly Still North Vent dominated, with South Vent weak during this hour. Sometimes difficult to tell minors from splashes, so percentage point has a degree of uncertainty, but probably somewhere in the 70s.
40245 06 Jul 2025 @ 1523 --- Delta4Heavy85 Nice tall north vent to 40' lots of water out of South at the same time, enough to get South's runoff channel flowing
40241 06 Jul 2025 @ 1431 --- Delta4Heavy85 Somewhat wispy north vent splashing to 30', one minor also has some South vent splashing. Trickle of water down runoff channel.
40229 05 Jul 2025 @ 1627 --- cb bone dry platform and channels.. NV spritzing, SV weak spray! Steerage dry
40220 04 Jul 2025 @ 1700 --- bhoppe runoff channel is totally dry. only a few spritzes from North in the few minutes observed.
40189 02 Jul 2025 @ 2024 --- cb whole platform is basically bone dry. SV channel DRY. Back shoulder DRY. Jabba Dry! NV occasional spritz and bounce to ~15'. SV just saw a few weak angled sprays. A thin damp area of orange bacteria that starts ~20' below Jabba in the SV Channel and extends maybe 10' then back to bone dry.
40176 01 Jul 2025 @ 1235 --- bbev Steady trickle down SV channel that is producing some yellowish growth. NV has sporadic, angled and vertical jetting. Finally some water in south vent! CS overflowing in most directions.
40157 30 Jun 2025 @ 0840 --- cb NV dominated, 30' angled and vertical play & fairly consistent play. SV occationally plays with NV but its angled, weak 5-8' play. SV runoff is a narrow weak trickle but consistent stream down to Steerage. back shoulder is bone dry. back to work....
40135 28 Jun 2025 @ 1909 --- MAB most voluminous play I've heard this season {from steerage} - had slacked off when I reached middle platform @1912
40103 28 Jun 2025 @ 0824 --- MAB nothing when I walked by at middle platform but a decent trickle at the trough
40074 26 Jun 2025 @ 1226 26 Jun 2025 @ 1326 Polly I am still getting about 70% concerted minors, although I could have missed some South splashes/ short minors due to steam. Overall, minors are stronger today than yesterday. North Vent has some nice minors with the center vertical participating. South is stronger than yesterday, but still on the short side & not putting much runoff down the channel.
40064 25 Jun 2025 @ 1215 25 Jun 2025 @ 1615 Polly For the hour that I took notes, I got about 72% concerted minors, with North Vent starting the others. Minors were stronger than yesterday, but not yet back to the level that they were on the 21st. South Vent is stronger than yesterday, but only occasionally putting much water down it’s runoff channel.
40055 24 Jun 2025 @ 1222 24 Jun 2025 @ 1322 Polly I watched for at least two hours, & recorded one of them. I got about 70-73% concerted starts of the minors, with North Vent still starting the rest. Both vents have more water than yesterday, but not as much as the other days that I observed. The activity that I’ve seen aligns with what the USGS temperature graph shows.
40041 23 Jun 2025 @ 1310 23 Jun 2025 @ 1351 Polly Appears to be in the low part of the days long cycle. Few thin minors. Very little water seen from South Vent.
40005 22 Jun 2025 @ 1308 22 Jun 2025 @ 1408 Polly About 68% concerted starts, with the caveat that during the minor I may have missed some light splashes in South Vent due to heavy steam. Rangers reported a strong minor yesterday & also one this morning. (These may have been single events and not part of a series of minors, but I don’t know.)
39983 21 Jun 2025 @ 1240 21 Jun 2025 @ 1340 Polly About 60% concerted during this hour. North Vent is sometimes having some tall minors with center vertical. They generally had short durations, but with some lasting several seconds. South Vent wasn’t as strong during this hour, with only 2 minors that had audible runoff. Yellow-green coloring in the small pool in South’s channel.
39972 20 Jun 2025 @ 1849 20 Jun 2025 @ 1852 MAB 5 pretty good NV in a row before 1 SV - More from NV in the next 3 minutes
39902 16 Jun 2025 @ 1725 --- cb Some NV angled weak minors. Nothing seen from.SV. SV channel mostly dry except for a seep below jabbas jaw that oozes small amounts of water.
39866 13 Jun 2025 @ 1841 --- MAB both channels ar middle platform and bridge much drier than this morn - some pooling here & there but not flowing - heard a NV spray walking away
39583 31 May 2025 @ 1730 --- mhreed Trickle in SV runoff channel. Frequent wispy jetting from both vents over quick 5 minute observation period.
39554 31 May 2025 @ 0723 --- ypcaribou Feathery splashes seen and heard from Steerage. Trickle down S channel. New-to-me boardwalk at Steerage that is higher than old one. Wonder why. ;)
39505 29 May 2025 @ 1839 --- MAB Walkby - NV splash
39467 29 May 2025 @ 1747 --- cb channels & platform bone dry. occational weak spitting from both vents. 😒
39422 27 May 2025 @ 1230 --- bbev Both runoff channels are dry. Very little activity from either vent.
39335 24 May 2025 @ 1905 --- MAB walk by tossing 3 N vent sprays then S vent - heard another N vent as I was up the ramp
39276 23 May 2025 @ 0835 --- TSBryan At 0835, occasional wispy jets from North vent and nothing from. South vent. At 0957 some better jetting from Noth plus a little bit of water seen from South.
39210 21 May 2025 @ 0842 --- MAB one NV spritz tossed
39176 19 May 2025 @ 1848 --- Ajw North vent- Thick steam with occasional splashes from 3 to 8 feet. South vent - very faint steam. No water in west runoff channel. Light runoff in main channel.
39075 15 May 2025 @ 1630 --- bbev Both runoff channels bone dry. Occasional wispy NV.
39069 15 May 2025 @ 1000 15 May 2025 @ 1010 mhreed NV jetting only for observation period
39023 12 May 2025 @ 1856 --- MAB spritzes from alternating vents on walkby
39020 12 May 2025 @ 1845 --- MAB gravels at trough thoroughly damp
39018 12 May 2025 @ 0915 --- MAB channels slightly wet with audible splashes on walkby - small amt of pooled water at the bridge
38992 11 May 2025 @ 1906 --- cb no change in activity. channels dry
38872 07 May 2025 @ 1650 --- cb Not much activity. really just steaming. VERY minimal jets of water observed during my short sit and only from NV. All channels bone dry along with Jabba, the back shoulder, ET.
38814 03 May 2025 @ 2128 --- K.Cooper Occasional small NV and SV spritzes. SV runoff damp.
38772 03 May 2025 @ 0859 --- MAB billowing steam
38676 27 Apr 2025 @ 1857 --- MAB walkby - channels look dry even as it starts to rain more - no sprays seen or heard
38589 23 Apr 2025 @ 1117 --- DanS Billowing steam, no water yet.
38542 19 Apr 2025 @ 1759 --- MAB gently billowing steam - trough is full of gravels - kamikaze icicles are bombing off of trees
38435 10 Apr 2025 @ 1130 --- SantaFe108 NV all angled and mostly wispy, SV barely coughing droplets during the strongest NV play.
38269 23 Feb 2025 @ 1415 --- K.Cooper NV wispy to 10ft every few minutes. SV occasionally wispy. Light runoff.
38137 02 Jan 2025 @ 1645 --- K.Cooper Quick observation. 1647 decently strong minor w/ NV vertical 30ft, SV participated with some small fountaining and good runoff. No other activity noted.
38016 16 Dec 2024 @ 0932 --- K.Cooper no change from yesterday
38006 15 Dec 2024 @ 1453 --- K.Cooper wispy NV 15-25ft. occasional SV to 10ft. Not putting much water out. trickage at steerage
37899 31 Oct 2024 @ 1655 --- SantaFe108 Huffing steam. Runoff channel almost entirely covered with snow at Steerage.
37846 29 Oct 2024 @ 1741 --- MAB below lower deck the little rectangular pool in the channel butted up against the formation is full 'erupting' with cute little blurps coming out on the SB side - clear water over gray sands but a green rectangular patch on the floor which might be the previous water level?
37827 29 Oct 2024 @ 1310 --- MAB steamy - possible light spritzes audible not visible
37786 27 Oct 2024 @ 0851 --- MAB N vent pushing steam more than SV but it joined in - possible spritzes - flir shows heat a little way down the channel
37745 24 Oct 2024 @ 1538 --- DanS Huffing steam. No water has returned to system yet.
37573 14 Oct 2024 @ 1100 --- cb SB is gently steaming and channels dry. **Cistern Spring really has not changed water level since last night's observation. still ~5' below the inner rim and still has the occational softball sized bubble breaking the surface. **@ 1830 Cistern Spring water level and bubbles are unchanged from 1100 post.
37556 13 Oct 2024 @ 1800 --- cb 6D9.5H PE, Done! SB is gently billowing steam. channels dry. ** Cistern Spring water level is ~5' below the inner rim. pool is clear, and I saw a few (3)bubbles break the surface in my brief visit. It has a wee bit of steam. **Emerald Spring pool is high, in overflow, and is clear & calm.
37535 12 Oct 2024 @ 1715 --- cb 5D9H ie, SB is starting its slow down with only vigorous huffing steam this evening. NV has a very thin veil of water in the steam. SV is all steam & its channel is 95%dry except for a thin area of moisture down the channel. ** Cistern Spring has dropped about another 1.5' below yesterday's level. ~2.5-3' below the inner rim. pool still has a weak boil with bubbles 🫧 breaking the surface in a variety of areas over the vent. (more bubbles 🫧 than yesterday) Pool is greenish in color. **Emerald Spring is more turquoise than greenish today. the pool is clear, calm & overflowing.
37522 11 Oct 2024 @ 1735 --- cb 4D9H. SB is STILL ie and both vents are still constantly and concertedly throwing vertical water + bounces! NV to 30+' and SV 10+'. SV has a steady stream of water down the channel. ** Cistern Spring water level is about 1.5' below the rim of the inner tube, clear and still has some bubbling that's breaking the surface over the vent. **Emerald Spring is high, overflowing, calm.
37515 10 Oct 2024 @ 1630 10 Oct 2024 @ 1730 cb 3D8H still ie. Both vents are still active, having concerted vertical play, tho not as tall as yesterday and more mix of steam and water with the occational bounce. NV ~20+' & SV ~8'. SV. Little bit of water running down the SV channel. **Cistern Spring down to about a foot above the inner rim. pool is clear, greenish with a weak bubble 🫧 breaking the surface over the vent. ** Emerald Spring pool is high, overflowing, clear, greenish & calm.
37471 10 Oct 2024 @ 1002 --- SantaFe108 Near steady steamy spray from both vents, enough water in it to put down babbling brook.
37464 09 Oct 2024 @ 1720 09 Oct 2024 @ 1750 bbev NV continuous jetting and vertical to 45+'. SV continuous wide vertical up to 15-20'. Concerted eruption with simultaneous increase and decrease in volume and height. very little runoff in either channel. Visitor reported seeing it erupting at 1645. CS down 24" below rim of pool. Steamboat says goodbye to us one more time!
37453 09 Oct 2024 @ 0825 --- bbev Another treacherous skate down to SB. Tall vertical steam cloud with light precipitation from the bench down past Cistern, forming a solid sheet of ice. No liquid water seen other than steady light flow down SV channel. Cistern 18-20" below edge, clear, no steam, occasional bubble over vent.
37440 08 Oct 2024 @ 0805 --- bbev Skated down to SB on a thick sheet of ice! No water, only steam visible out of NV. Trickle of water down SV channel but did not see any liquid water coming out of the vent, Very steamy and cold this morning. CS is down only 13-15", little steam, occasional bubble over the vent.
37425 06 Oct 2024 @ 0915 06 Oct 2024 @ 1741 Ben VL Stronger minors at 1111, 1420, & 1703. 1111 by far the best of the day; nicely sustained vertical from both vents, raging river (on the smaller side). Overall not as good as what I saw last week, and SV is still dragging behind NV. Play in between events merely ok. NV fairly thick and happy with a lot of bounce & brief vertical. SV poor. No sustain, vertical, or heavy runoff unless NV is making it. Shoulder dry. CS still low.
37385 03 Oct 2024 @ 1550 --- SantaFe108 Quick 15min pitstop. NV mostly angled with some tries to go verticle + a little bounce, but all small stuff. SV just hucking angled spray for the most part. One short minor with NV verticle + bounce w/ SV being slightly thicker put down a babbling brook.
37263 29 Sep 2024 @ 1630 29 Sep 2024 @ 1720 User34 North is indeed having frequent vertical and bounce, however all but a small handful of those were meaningless fleeting spritzes and sloshes. A series of three minors just past 1700 had more sustained and heavy North play, both angled and bouncing, with mediocre South play trying to go vertical. The first two of these minors sent strong babbling brooks down the runoff channel, but according to Bill Beverly not enough to go into the east channel under the bridge, which was damp.
37269 29 Sep 2024 @ 0905 29 Sep 2024 @ 1505 Ben VL NV boomy in the morning but quieted down by the afternoon. NV has some pretty nice volume, and frequent small bounce/vertical. SV dragging along behind, but willing to engage with the bigger NV's. ~0945 conc, sust, vertical with raging river. A bit hard to see SV but NVV hit about 30'. ~0955 smaller followup. ~1006 another even smaller followup. 1200 isolated concerted sustained vertical w/ river. 1244 nice concerted sustained vertical, NV punchy and heavy, SV nice sustained fountaining to end it. Didn't get me to stand up or anything though. 1253 followup, not sustained but almost as thick and tall. 1312 somewhat tall NVV pop. (More NVV than that seen, just what I took notes of). Regressed after that, a lot of quiet periods, jabba was drying out almost completely, all minors just single splashes. Decided to leave by 1500. ES clear, calm. CS still very low. Echinus clear.
37241 29 Sep 2024 @ 0846 --- TSBryan very steamy but one so-so concerted burst otherwise relatively minor jetting mostly from North
37214 28 Sep 2024 @ 1525 --- cb Similar to yesterday. NV mix of angled and vertical play with the occational nice bounce. Many are concerted but SV is lacking oomph (mostly just spitting, angled play. lacks verticality) Several weak babbling brooks. SV channel is starting to lighten ~20' below its vent. NV channel has small standing pools of milky/muddy water in front of middle deck. 3 active, noisy mud pots scattered on the platform. Back shoulder and far back channel are bone dry. 1625 nice concerted play that put a nice river of water down SV channel to Steerage. channel has streaks of white in the channel.
37193 27 Sep 2024 @ 1800 --- cb Improved play from last evenings observation. more continuous & concerted play from both vents. SV channel has a nice flow of water and I observed a few solo SV that were angled but had more volume than yesterday. 2 babbling brooks during my observation. NV play also has increased volume & height with bounces. back shoulder is still dry. NV run off channel & the channel below the upper deck both have water. The upper deck channel has a fun active bubbler. Much improved!
37175 26 Sep 2024 @ 1711 --- cb kinda shocked at how disappointing the SV channel looks. dry patches especially at the top of the channel and dry patches scattered down the sv channel with BARELY a trickle of water down the SV channel. Back shoulder dry. NV having mix of angled jets (~30') & bounces, SV weak, angled spray. ** The new bridges over the NV & SV runoff channels and the new bw from Cistern Spring to Steerage (SV bridge) are finished and are AWESOME! They are elevated and no longer bounce! GREAT JOB! Bummer is, the tree at Steerage is gone...
37157 25 Sep 2024 @ 1500 25 Sep 2024 @ 1620 Dan A Very north dominant today, strong north with verticals up to 40’, however none of the verticals sustained, and South was fairly weak it had occasional brief unsustained vertical in conjunction with north vertical, some strong babbling brooks seen but that’s it. Bob jones was observing earlier in the day and noted the same behavior.
37121 22 Sep 2024 @ 1400 22 Sep 2024 @ 1900 Dan A Steamboat improved from last week’s observations, lots of vertical bounces, north was very boomy sounding as well, 1710 nice concerted vertical minor with tall fountaining south that put down a raging river, None of the vertical minors that I observed sustained for long and there was no sizable follow up to any of them.
37095 20 Sep 2024 @ 1600 20 Sep 2024 @ 1620 Micah Kipple In the 20 minutes I watched, Some Concerted minors with a handful of vertical shots from North Vent. South Vent got voluminus enough to send a *trickle* down the runoff exactly 3 times. Overall activity is weak.
37096 20 Sep 2024 @ 1516 20 Sep 2024 @ 1537 htm weaker angled jetting than 9/16 and 9/17. no babbling brook duals
37065 19 Sep 2024 @ 1230 --- cb we saw nothing exciting in our brief observation. NV angled, SV angled, both have weak activity. SV runoff channel had a trickle of water down the center but really looked on the dry side. The boardwalk/MCC crew is making great headway on elevating and replacing the Steerage bridge and bw from Cistern toward Echinus.
37032 17 Sep 2024 @ 1634 17 Sep 2024 @ 1654 htm Similar to yesterday. Weak angled jetting from NV and SV, one dual slightly stronger than what I saw yesterday.
37018 16 Sep 2024 @ 1845 16 Sep 2024 @ 1910 htm weak angled minors from NV and SV, a couple concerted NV/SV with some runoff from SV, no appreciable runoff from NV; no change when I left the basin at 20:45
36980 14 Sep 2024 @ 1400 14 Sep 2024 @ 1500 rwd03 Very weak stuff, big disimprovement from last week. Didn't see anything sustained for impressive. Temperature graph also shows a slight decline over last few days. :(
36889 10 Sep 2024 @ 1558 --- cb stopped twice on my way out and back from Vixen. Sporadic play from both vents. mostly angled with a few NV bounces and vertical play. SV played a bit but is weak and at 1600 has dry patches with no trickle of water. disimprovement!
36874 09 Sep 2024 @ 1345 09 Sep 2024 @ 1646 Ben VL Took until I stepped on the platform to hear any noise out of it on the way in. Long quiet periods, NV not very grumbly. Most minors are brief. SV channel drying out in spots sometimes. NV has a bit of volume, and frequent bounce. SV fairly wispy, and dragging behind NV. Occasional large bounce or somewhat sustained angled SV. 1400 concerted vertical with both vents sustained for a few seconds, but the runoff was a lot less than I anticipated. Small followup 1408. Some babbling brooks seen, and a couple other concerted minors with vertical.
36877 09 Sep 2024 @ 0755 09 Sep 2024 @ 0840 Suzanne Activity was similar to what I observed yesterday, with a couple of small vertical bounces from North Vent and wispy South Vent. No minors produced any significant runoff during this observation period.
36844 08 Sep 2024 @ 0840 08 Sep 2024 @ 1115 Suzanne Small improvement from the past few days with a few small vertical bounces from North Vent. Long pauses between minors. South Vent still wimpy. One decent minor with fountaining from South Vent at 0942. Produced a noisy babbling brook. No followup.
36834 07 Sep 2024 @ 1800 --- Kyle similar to this morning if not worse. observed from 1700-1800. Range function on GT Android is not working
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14 Apr 2025 @ 1105 JSJ https://www.flickr.com/photos/jsjgeology/54453701758 Norris Museum seismogram showing Steamboat Geyser's 11:05 AM major eruption on 14 April 2025.
14 Apr 2025 @ 1105 JSJ https://www.flickr.com/photos/jsjgeology/54453644754 Tantalus Creek discharge graph showing Steamboat Geyser's 11:05 AM major eruption on 14 April 2025.
03 Feb 2025 @ 2356 JSJ https://www.flickr.com/photos/jsjgeology/54308793343 Tantalus Creek discharge graph showing Steamboat Geyser's 11:56 PM major eruption on 3 February 2025.
03 Feb 2025 @ 2356 JSJ https://www.flickr.com/photos/jsjgeology/54308973330 Norris Museum seismogram showing Steamboat Geyser's 11:56 PM major eruption on 3 February 2025.
23 Nov 2024 @ 1730 JSJ https://www.flickr.com/photos/jsjgeology/54170264986 Tantalus Creek discharge graph showing Steamboat Geyser's 5:29 PM major eruption on 23 November 2024.
07 Oct 2024 @ 0828 JSJ https://www.flickr.com/photos/jsjgeology/54057498197 Norris Museum seismogram showing Steamboat Geyser's 8:28 AM major eruption on 7 October 2024.
15 Jul 2024 @ 1502 JSJ https://www.flickr.com/photos/jsjgeology/53861143806 Tantalus Creek discharge graph showing Steamboat Geyser's 3:02 PM major eruption on 15 July 2024.
15 Jul 2024 @ 1502 JSJ https://www.flickr.com/photos/jsjgeology/53860132014 Norris Junction seismogram showing Steamboat Geyser's 3:02 PM major eruption on 15 July 2024.
30 May 2024 @ 0144 JSJ https://www.flickr.com/photos/jsjgeology/53756553232 Norris Museum seismogram showing Steamboat Geyser's 1:44 AM major eruption on 30 May 2024.
03 Apr 2024 @ 1804 JSJ https://www.flickr.com/photos/jsjgeology/53630765681 Tantalus Creek discharge graph showing Steamboat Geyser's 6:04 PM major eruption on 3 April 2024.
03 Apr 2024 @ 1804 JSJ https://www.flickr.com/photos/jsjgeology/53629874332 Norris Museum seismogram showing Steamboat Geyser's 6:04 PM major eruption on 3 April 2024.
26 Feb 2024 @ 0407 JSJ https://www.flickr.com/photos/jsjgeology/53553985523 Norris Museum seismogram showing Steamboat Geyser's 4:07 AM major eruption on 26 February 2024.
30 Dec 2023 @ 1903 Betty https://quake.utah.edu/station/heli/YNM.png?1704070210740 YNM seismo
30 Dec 2023 @ 1903 JSJ https://www.flickr.com/photos/jsjgeology/53432962380 Tantalus Creek discharge graph showing Steamboat Geyser's 7:03 PM major eruption on 30 December 2023.
30 Dec 2023 @ 1903 JSJ https://www.flickr.com/photos/jsjgeology/53431238352 Norris Museum seismogram showing Steamboat Geyser's 7:03 PM major eruption on 30 December 2023.
13 Nov 2023 @ 0616 JSJ https://www.flickr.com/photos/jsjgeology/53329176472 Tantalus Creek discharge graph showing Steamboat Geyser's 6:16 AM major eruption on 13 November 2023.
13 Nov 2023 @ 0616 JSJ https://www.flickr.com/photos/jsjgeology/53330506015 Norris Junction seismogram showing Steamboat Geyser's 6:16 AM major eruption on 13 November 2023.
08 Oct 2023 @ 1446 JSJ https://www.flickr.com/photos/jsjgeology/53245966898 Tantalus Creek discharge graph showing Steamboat Geyer's 2:46 PM major eruption on 8 October 2023.
08 Oct 2023 @ 1446 JSJ https://www.flickr.com/photos/jsjgeology/53246168970 Norris Junction seismogram showing Steamboat Geyser's 2:46 PM major eruption on 8 October 2023.
08 Oct 2023 @ 1446 JSJ https://www.flickr.com/photos/jsjgeology/53244930054 Tantalus Creek discharge graph showing Steamboat Geyser's 2:46 PM major eruption on 8 October 2023.
Baseline does not exist.