Last Known Eruption
1y 285d 6h 49m ago

Latest Eruptions

Eruption DurationInterval
10 Oct 2022 @ 0758 E4d 11h 18m
05 Oct 2022 @ 2040 E5d 15h 40m
30 Sep 2022 @ 0500 E4d 2h 9m
26 Sep 2022 @ 0251 E5d 22h 36m
20 Sep 2022 @ 0415 E4d 1h 39m
16 Sep 2022 @ 0236 E5d 21h 36m
10 Sep 2022 @ 0500 E5d 7h 49m
04 Sep 2022 @ 2111 E4d 17h 41m
31 Aug 2022 @ 0330 E5d 2h 30m
26 Aug 2022 @ 0100 E5d 5h 7m
20 Aug 2022 @ 1953 E1d 23h 35m
18 Aug 2022 @ 2018 E3d 15h 14m
15 Aug 2022 @ 0504 E maj2d 5h 1m
13 Aug 2022 @ 0003 E maj102d 8h 25m
02 May 2022 @ 1538 ie4d 5h 31m
28 Apr 2022 @ 1007 ie3d 25m
25 Apr 2022 @ 0942 ie1d 22h 44m
23 Apr 2022 @ 1058 ie202d 7h 58m
03 Oct 2021 @ 0300 A137d 9h 35m
18 May 2021 @ 1725 ?Unknown18d 4h 56m
30 Apr 2021 @ 1229 ie4d 1h 9m
26 Apr 2021 @ 1120 ie265d 22h 3m
03 Aug 2020 @ 1317 ? ie36d 6h 56m
28 Jun 2020 @ 0621 ie4d 20h 51m
23 Jun 2020 @ 0930 ie>30m 23d 14h 48m
30 May 2020 @ 184214d 3h 34m
16 May 2020 @ 1508 ie241d 3h 29m
18 Sep 2019 @ 1139 ? majFirst heard at 11:25am30d 3h 47m
19 Aug 2019 @ 0752 ? ANot Known35d 23h 52m
14 Jul 2019 @ 0800 ? AStill Going as of 13:5676d 20h 51m
28 Apr 2019 @ 1109 ie3y 63d 24m
25 Feb 2016 @ 0945 ? ie59d 19h 32m
27 Dec 2015 @ 1413 ns56d 2h 29m
01 Nov 2015 @ 1144 ns>1h 20m 10d 11h 44m
22 Oct 2015 @ 0100 A39d 16h 39m
12 Sep 2015 @ 0821 ns>1h 33m 5d 16h 41m
06 Sep 2015 @ 15406d 7h 3m
31 Aug 2015 @ 08371h 26m 5d 22h 24m
25 Aug 2015 @ 10137d 18h 14m
17 Aug 2015 @ 15595d 11h 29m
12 Aug 2015 @ 0430 A5d 10h 19m
06 Aug 2015 @ 18114d 9h 22m
02 Aug 2015 @ 08496d 17h 29m
26 Jul 2015 @ 1520 ie3d 19h 17m
22 Jul 2015 @ 20034d 6h 23m
18 Jul 2015 @ 13404d 12h 10m
14 Jul 2015 @ 0130 A6d 1h 30m
08 Jul 2015 @ 0000 A6d 9h 0m
01 Jul 2015 @ 1500 ie16m
01 Jul 2015 @ 1444 ie3d 22h 28m
27 Jun 2015 @ 16163d 22h 22m
23 Jun 2015 @ 175412h 0m
23 Jun 2015 @ 05543d 23h 58m
19 Jun 2015 @ 0556 ie3d 23h 36m
15 Jun 2015 @ 0620 ie4d 1h 20m
11 Jun 2015 @ 0500 A4d 9h 3m
06 Jun 2015 @ 19573d 27m
03 Jun 2015 @ 19301d 8m
02 Jun 2015 @ 19224d 5h 50m
29 May 2015 @ 1332 maj3d 16h 51m
25 May 2015 @ 2041 maj4d 11h 41m
21 May 2015 @ 0900 A7d 1h 0m
14 May 2015 @ 0800 A2d 21h 21m
11 May 2015 @ 10391h 13m 3d 2h 39m
08 May 2015 @ 0800 A3d 23h 55m
04 May 2015 @ 0805 A maj4d 20h 21m
29 Apr 2015 @ 11441h 56m 1d 21m
28 Apr 2015 @ 11231h 17m 9d 1h 0m
19 Apr 2015 @ 1023 ie1d 2h 35m
18 Apr 2015 @ 0748 ie18d 12h 48m
30 Mar 2015 @ 1900 A1y 319d 7h 30m
15 May 2013 @ 1130 ie1y 288d 23h 50m
31 Jul 2011 @ 1140 ie20m
31 Jul 2011 @ 112020d 20h 20m
10 Jul 2011 @ 1500 A1y 334d 23h 0m
09 Aug 2009 @ 1600315d 10m
28 Sep 2008 @ 155035m
28 Sep 2008 @ 1515 ie2d 1h 15m
26 Sep 2008 @ 14005d 3h 0m
21 Sep 2008 @ 1100 ie2d 23h 24m
18 Sep 2008 @ 113618d 8h 36m
31 Aug 2008 @ 0300 A12d 15h 24m
18 Aug 2008 @ 1136 A1d 20h 42m
16 Aug 2008 @ 14548d 54m
08 Aug 2008 @ 140012d 22h 53m
26 Jul 2008 @ 15072y 46d 22h 7m
10 Jun 2006 @ 17007y 14d 3h 45m
29 May 1999 @ 1315 ? ie1y 39d 18h 34m
19 Apr 1998 @ 1841205d 4h 32m
26 Sep 1997 @ 1409 min1y 80d 5h 45m
08 Jul 1996 @ 0824 ie119d 7h 24m
11 Mar 1996 @ 0000 A111d 0m
21 Nov 1995 @ 0000 A1h 33m 18d 0m
03 Nov 1995 @ 0000 A59d 5h 0m
04 Sep 1995 @ 2000 A2d 20h 0m
02 Sep 1995 @ 0000 A41d 11h 20m
22 Jul 1995 @ 12407d 13h 10m
14 Jul 1995 @ 233015d 17h 30m
29 Jun 1995 @ 0600 A23d 6h 0m
06 Jun 1995 @ 0000 A8d 14h 30m

Interval Statistics

Interval Count100
Min16m
Max7y 14d 3h 45m
Mean99d 23h 15m
Median5d 22h 0m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
35498 23 Jun 2024 @ 1949 23 Jun 2024 @ 1955 nails Forced misty water during the huffs. Not loud.
35445 22 Jun 2024 @ 1358 --- K.Cooper Light huffing steam
35410 21 Jun 2024 @ 1401 --- nails Very light steam with louder huffs near the time water is splashing in the feature between Ledge and Guardian.
35347 19 Jun 2024 @ 1134 --- Craigmon99 In powerful steam phase. Can hear from beyond the museum
35348 19 Jun 2024 @ 1134 --- Craigmon99 In powerful steam phase. Can hear from beyond the museum
35063 10 Jun 2024 @ 0902 --- SantaFe108 In variable volume steam-phase.
34681 26 May 2024 @ 0626 --- ypcaribou Roaring steam heard and seen from top of hill at path branch. Heard from lot on arrival. Did not go down to confirm it was Ledge but in that general area.
34375 28 Apr 2024 @ 1055 --- DanS Loud steam, including White vent.
34369 28 Apr 2024 @ 0747 --- rayceanderson LOUD powerful steam phase. No water observed.
34329 24 Apr 2024 @ 1110 --- DanS Cycling between noisy steam and throwing a little water.
34227 19 Apr 2024 @ 0907 --- MAB dry huffing - continue thru the morning
34175 11 Apr 2024 @ 1000 --- JR Extra loud roaring steam phase. Lots of mist.
34125 17 Mar 2024 @ 1030 17 Mar 2024 @ 1320 Mkeller Main vent erupting 5-15 feet, in and out of steam phase. Wasn’t very loud but at times thick water then spray then steam then back to mostly water. Finger vents just steam.
34083 01 Mar 2024 @ 0940 --- JR Loud roaring steam phase. No signs of water phase on boardwalk.
33907 24 Jan 2024 @ 1100 --- JR Roaring steam phase.
33752 06 Jan 2024 @ 1100 --- JR Loud roaring steam phase.
31722 29 Nov 2023 @ 1613 --- JR Strong steam began today. Area around Ledge vents seems to be putting out more forceful steam than usual regardless of cold temperatures.
29052 22 Oct 2023 @ 1318 --- SantaFe108 Roaring steam at variable volume.
28984 21 Oct 2023 @ 0800 21 Oct 2023 @ 1700 JR Very strong steam roar. Near constant but had fluctuations of intensity.
28907 20 Oct 2023 @ 0800 20 Oct 2023 @ 1111 MAB cycling between forceful steam & and occasionally quieting as water spritzes out then back to a steady roar
28883 19 Oct 2023 @ 1301 --- DanS Constant forced steam. Switched to alternating quiet and forced steam around 1420.
28750 12 Oct 2023 @ 1700 --- JR Loud steam, some mist.
28697 07 Oct 2023 @ 1809 --- MAB Steady roar - from 0815-1205 it was a wet spray not noisy
28642 05 Oct 2023 @ 1300 --- cb just gently steaming with cycles of a bit more forceful steam, but mostly just weak steam.
28559 30 Sep 2023 @ 0708 --- ypcaribou Loud, continuous, roaring steam. Heard from path walking down from lot. Confirmed from jct to Back Basin
28537 29 Sep 2023 @ 0950 --- DanS Loud forceful steam
28374 20 Sep 2023 @ 1011 --- Micah Kipple Ledge at this time is taking pauses between forced steam episodes.
28370 20 Sep 2023 @ 0910 --- Micah Kipple Steamphase has gotten much louder at this point.
28369 20 Sep 2023 @ 0835 --- Micah Kipple In watery forced steam but not loud yet
28294 17 Sep 2023 @ 0834 --- SantaFe108 Loudly forcing steam with variable volume, whole hillside is one giant cloud at the moment.
28254 14 Sep 2023 @ 1110 14 Sep 2023 @ 1215 CP Unusually quiet.
28234 12 Sep 2023 @ 1300 --- cb It is in LOUD forceful steam phase. Pretty sure i heard it in steam at 0500 at the gov area.
28154 09 Sep 2023 @ 1130 --- steve Currently roaring out steam
28018 04 Sep 2023 @ 1711 --- cb In forceful steam mode. not terribly loud tho
27838 28 Aug 2023 @ 1550 --- cb Ledge is cycling between forceful steam & quiet periods about every 10-20s. no water
27619 15 Aug 2023 @ 1035 15 Aug 2023 @ 1530 cb Alternating between quiet periods & loud forceful steam.
27602 14 Aug 2023 @ 1654 --- cb forceful, loud steam
27363 31 Jul 2023 @ 0746 --- MAB cycling wet-dry - not noisy forced steam
27322 30 Jul 2023 @ 0547 --- ypcaribou Calmly steaming on arrival. Has been doing intermittent bursts of forceful steam and small splashing as seen/heard from Constant. Side note: Plethora of tallish (2 ft?) Reed Canary Grass growing on hillside between Ledge/Jetsam and walkway.
27306 28 Jul 2023 @ 2110 --- SantaFe108 Loudly forcing steam while walking to parking lot.
27222 25 Jul 2023 @ 0937 --- mhreed Variable steam jetting this morning.
27182 23 Jul 2023 @ 1530 --- mhreed Vigorous steam. Editing to add cb's observation that Ledge smells baaaaad.
27136 20 Jul 2023 @ 0800 --- MAB high pressure noisy wet forced steam
26870 06 Jul 2023 @ 1940 06 Jul 2023 @ 2015 nails Noisy steam
26497 20 Jun 2023 @ 0706 --- SantaFe108 In loud, roaring steam phase.
26431 17 Jun 2023 @ 1610 --- JSJ Gentle steaming to moderately-forced steaming, with some episodes of moderately-forced sprays of water.
26417 17 Jun 2023 @ 0818 --- MAB Very Wet splashes - not with forced steam
31172 14 Jun 2023 @ 1016 16 Jun 2023 @ 1017 Geyser Guy700 I was looking at my videos and noticed that Ledge was splashing up to 15ft. (Changed to a note after someone pointed it out)
26299 14 Jun 2023 @ 1118 --- bhoppe loud roaring steam
26198 09 Jun 2023 @ 0828 09 Jun 2023 @ 1301 MAB NOISY high pressure steady wet roar - occasionally quieting briefly later in this range but not much - still louder than Steamboat from Constant
26049 05 Jun 2023 @ 0931 --- Graham Mostly quiet steam.droftomg from vent with occasional noisy steam rushes.
25872 28 May 2023 @ 2028 --- SantaFe108 Perpetual mixed-phase jetting
25718 23 May 2023 @ 1033 --- cb in heavy forceful steam along with valve & side vents. Palm pool is low & Jetsam is high
25647 21 May 2023 @ 1048 --- SantaFe108 Wispy, mixed-phase jetting, cycling between weak and powerful.
25528 18 May 2023 @ 0904 --- MAB annoyingly loud steady steam for 1st 4 hours - some water may have quieted it later but could have been squirrely winds
25476 15 May 2023 @ 2026 --- ypcaribou Gently steaming. Some water squirted to maybe 20 ft at one point but returned to gentle steam. Nice sunset from the overlook above.
28732 06 May 2023 @ 0830 --- research-mab 5/6/2023 0830 – Ledge Geyser Steam phase heard from parking lot. Steam phase continued for at least 10 hours. Loud & aggressive
24939 21 Jan 2023 @ 1530 --- ypcaribou Time approximate. Seen southbound from pullout on the long, downhill stretch of road between Norris Overlook & Norris Campground. "Ledge area was a lot more steamy than Steamboat. (Ledge area steam very tall.) But Steamboat had a few bursts of steam. No water bursts seen from either."
24606 31 Oct 2022 @ 0828 31 Oct 2022 @ 1241 MAB Steam phase that quiets then increases with more force - repeat
24587 30 Oct 2022 @ 1830 --- MAB strong continuous high pressure forced steam - I landed on my derriere on the bw by Basin G - freezing mist landing on my book at the Constant bench!
24566 30 Oct 2022 @ 1359 --- ypcaribou Forceful steam, loud, no water spray I could see from near I S.
24594 30 Oct 2022 @ 0845 --- MAB audible from just past bookstore
24521 29 Oct 2022 @ 1804 --- MAB consistent forced moist steam then total pauses
24536 29 Oct 2022 @ 0833 --- MAB seems quiet but Intersection Spgs are noisy! Definitely not roaring tho
24508 28 Oct 2022 @ 0835 28 Oct 2022 @ 1841 MAB fairly quiet in the morn and seemed to get wetter as the day went on
24466 21 Oct 2022 @ 1837 --- MAB cycling between fairly quiet and hollow steam as best I could hear in the swirling winds - did not walk down there
24394 15 Oct 2022 @ 1820 --- MAB LOUD misty steam phase
24414 15 Oct 2022 @ 0820 --- MAB In high pressure steam audible between bookstore and museum
24377 14 Oct 2022 @ 1827 --- MAB strong mixed forced steam
24387 14 Oct 2022 @ 0845 14 Oct 2022 @ 1130 MAB cycling between quiet and wet - neither very noisy
24297 07 Oct 2022 @ 1055 07 Oct 2022 @ 1300 DanS Alternating between strong steam and moments of quiet with steam and a little water from red vent. White vent appears to be steam only.
24263 05 Oct 2022 @ 1439 --- cb cycling mix steam water with brief semi pauses. Jetsam is overflowing, is a cloudy turquoise blue color
23973 20 Sep 2022 @ 1935 --- ypcaribou Powerful steam heard from museum and parking lot on way out.
23948 20 Sep 2022 @ 1519 --- ypcaribou Powerful, loud steam as observed from museum.
23885 17 Sep 2022 @ 1710 17 Sep 2022 @ 1836 MAB dry hollow sounding forced steam alternating w quiet
23822 14 Sep 2022 @ 1403 14 Sep 2022 @ 1436 ThomasR In mixed phase as seen from various angles in the Porcelain Basin. Fine jets of water alternating with steam.
23809 13 Sep 2022 @ 1414 --- CP Very quiet. No roar at all.
23415 26 Aug 2022 @ 1030 --- cb forced loud steam. Very visable steam cloud from the intersection. Much bigger than the wispy steam coming from SB.
23374 23 Aug 2022 @ 1030 23 Aug 2022 @ 1825 MAB cycling in and out of mixed water + steam phase - never real forceful
23299 20 Aug 2022 @ 0917 --- steve Ledge is lightly steaming with only minor gurgling.
23282 19 Aug 2022 @ 1220 --- Craigmon99 Forced steam. Roaring
23252 18 Aug 2022 @ 1835 18 Aug 2022 @ 1844 MAB fairly steady voluminous water sprays during the walk thru via steps - tall but Quiet! As I passed Basin G there was a pause and noisier mixed phase w forced steam
23158 13 Aug 2022 @ 0815 --- bbev Large steam cloud from the road. Roaring heard from parking lot. Mixed water and roaring steam, with Jetsum and palm pool overflowing into runoff channel. Have not heard Ledge from parking lot prior to today.
23043 05 Aug 2022 @ 0915 --- cb Ledge is in full steam with light consistent roaring. I heard it last night at 0230 roaring. No water eruption i think as the runoff channels still have green algae in them. @1300 ledge is back to cycling heavy steam with a thin veil of water, to a few minutes of quiet. Jetsam pool is high again > ~3" below overflow & clay colored.
23004 03 Aug 2022 @ 1128 --- cb cycling weak mixed steam water. No roar.
22917 27 Jul 2022 @ 1900 --- MAB Morning obs at Ledge were quiet then a hiss with a spritz of water - as seen from Trinket @ 1900 a lot of water had returned to Ledge
22853 26 Jul 2022 @ 0940 26 Jul 2022 @ 1140 cb Ledge is mostly quiet. occational weak roars, no water
22756 21 Jul 2022 @ 0810 21 Jul 2022 @ 0945 nails Pretty quiet, the periodic huffs can be missed if you don’t listen for them.
22749 20 Jul 2022 @ 2001 20 Jul 2022 @ 2021 nails Still periodically noisier steam, but overall much quieter than yesterday.
22723 20 Jul 2022 @ 1030 20 Jul 2022 @ 1127 cb Ledge is mostly quiet & gently steaming.
22707 19 Jul 2022 @ 1334 --- cb Ledge is still cycling but much quieter today. briefer & weaker roaring/steam periods followed by quiet spells.
22698 19 Jul 2022 @ 0810 19 Jul 2022 @ 1220 nails Periodically loud. No spritzes of water.
22658 17 Jul 2022 @ 1922 --- MAB still with the cyclic roaring ~ adios until we meet again
22664 17 Jul 2022 @ 0836 17 Jul 2022 @ 1500 MAB LOUD roar w cyclic wet spray and very brief quiet spells - repeated for 6hrs
22627 16 Jul 2022 @ 1045 16 Jul 2022 @ 1424 cb Ledge is having longer quiet spells and the roar is not as loud as it has been.
22544 13 Jul 2022 @ 1346 --- cb Still cycling steam/quiet but today there was longer quiet periods! thank gosh!
22524 12 Jul 2022 @ 1130 12 Jul 2022 @ 1513 cb Still..cycling..noisy...steam and short quiet periods
22498 11 Jul 2022 @ 1710 --- cb is much quieter. still mildly cycling
22398 08 Jul 2022 @ 0946 --- cb repeat... forceful steam cycling with quiet periods
22352 06 Jul 2022 @ 0916 --- cb still cycling loud forceful steam with periods of quiet.
EntrySourceLinkComment
18 May 2021 @ 1725 ell-e https://imgur.com/2HQn2g9 Ledge as observed from the Boardwalk.
18 May 2021 @ 1725 ell-e https://imgur.com/aNLKSC4 Ledge as Observed before walking into the Porcelain Basin.
16 Aug 2008 @ 1450 Micah Kipple https://flic.kr/p/7LbXWv Photograph by Visitor
Baseline does not exist.