Last Known Eruption
5h 47m ago

Latest Eruptions

Eruption DurationInterval
12 Apr 2024 @ 1531 ns wc1h 26m
12 Apr 2024 @ 1405 wc ini5h 13m
12 Apr 2024 @ 0852 wc min1h 5m
12 Apr 2024 @ 0747 wc1h 1m
12 Apr 2024 @ 0646 wc1h 4m
12 Apr 2024 @ 0542 wc15h 5m
11 Apr 2024 @ 1437 ie wc7h 15m
11 Apr 2024 @ 0722 wc1h 16m
11 Apr 2024 @ 0606 wc10h 27m
10 Apr 2024 @ 1939 wc1h 27m
10 Apr 2024 @ 1812 wc ini11h 7m
10 Apr 2024 @ 0705 wc1h 27m
10 Apr 2024 @ 0538 wc1h 28m
10 Apr 2024 @ 0410 wc ini20h 15m
09 Apr 2024 @ 0755 wc1h 18m
09 Apr 2024 @ 0637 wc1h 28m
09 Apr 2024 @ 0509 wc1h 20m
09 Apr 2024 @ 0349 wc ini8h 19m
08 Apr 2024 @ 1930 wc min8h 12m
08 Apr 2024 @ 1118 ie1h 7m
08 Apr 2024 @ 1011 wc1h 11m
08 Apr 2024 @ 0900 ie wc14h 2m
07 Apr 2024 @ 1858 wc1h 38m
07 Apr 2024 @ 1720 wc ini6h 31m
07 Apr 2024 @ 1049 wc1h 18m
07 Apr 2024 @ 0931 ie wc ini5h 38m
07 Apr 2024 @ 0353 wc1h 19m
07 Apr 2024 @ 0234 wc ini10h 54m
06 Apr 2024 @ 1540 wc1h 20m
06 Apr 2024 @ 1420 ns wc ini11h 2m
06 Apr 2024 @ 0318 wc1h 5m
06 Apr 2024 @ 0213 wc1h 17m
06 Apr 2024 @ 0056 wc1h 19m
05 Apr 2024 @ 2337 wc ini11h 45m
05 Apr 2024 @ 1152 wc1h 10m
05 Apr 2024 @ 1042 wc1h 22m
05 Apr 2024 @ 0920 ie wc ini13h 41m
04 Apr 2024 @ 1939 wc1h 18m
04 Apr 2024 @ 1821 ie wc1h 46m
04 Apr 2024 @ 1635 wc min1h 18m
04 Apr 2024 @ 1517 ie wc23h 50m
03 Apr 2024 @ 1527 wc1h 27m
03 Apr 2024 @ 1400 wc ini20h 42m
02 Apr 2024 @ 1718 wc1h 16m
02 Apr 2024 @ 1602 wc ini6h 3m
02 Apr 2024 @ 0959 wc58m
02 Apr 2024 @ 0901 ie wc1h 24m
02 Apr 2024 @ 0737 wc ini22h 10m
01 Apr 2024 @ 0927 wc ini7h 38m
01 Apr 2024 @ 0149 wc ini11h 9m
31 Mar 2024 @ 1440 ? ie wc6h 40m
31 Mar 2024 @ 0800 wc1h 28m
31 Mar 2024 @ 0632 wc ini7h 53m
30 Mar 2024 @ 2239 wc1h 30m
30 Mar 2024 @ 2109 wc ini5h 13m
30 Mar 2024 @ 1556 wc1h 18m
30 Mar 2024 @ 1438 ie wc ini7h 26m
30 Mar 2024 @ 0712 ie wc1h 7m
30 Mar 2024 @ 0605 wc19m
30 Mar 2024 @ 0546 wc1h 10m
30 Mar 2024 @ 0436 wc1h 12m
30 Mar 2024 @ 03241h 26m
30 Mar 2024 @ 0158 wc ini14h 46m
29 Mar 2024 @ 1112 wc1h 11m
29 Mar 2024 @ 1001 wc1h 21m
29 Mar 2024 @ 0840 wc ini6h 28m
29 Mar 2024 @ 0212 wc1h 21m
29 Mar 2024 @ 0051 wc ini1d 1h 1m
27 Mar 2024 @ 2350 wc1h 10m
27 Mar 2024 @ 2240 wc1h 19m
27 Mar 2024 @ 2121 wc1h 17m
27 Mar 2024 @ 2004 ie wc ini10h 46m
27 Mar 2024 @ 0918 wc1h 10m
27 Mar 2024 @ 0808 ie wc1h 25m
27 Mar 2024 @ 0643 ns wc ini11h 36m
26 Mar 2024 @ 1907 wc7h 2m
26 Mar 2024 @ 1205 wc1h 6m
26 Mar 2024 @ 1059 wc1h 25m
26 Mar 2024 @ 0934 wc ini11h 5m
25 Mar 2024 @ 2229 wc1h 6m
25 Mar 2024 @ 2123 wc1h 18m
25 Mar 2024 @ 2005 ie wc ini23h 28m
24 Mar 2024 @ 2037 wc min1h 23m
24 Mar 2024 @ 1914 wc1h 20m
24 Mar 2024 @ 1754 wc1h 27m
24 Mar 2024 @ 1627 wc ini13h 14m
24 Mar 2024 @ 0313 wc1h 18m
24 Mar 2024 @ 0155 wc1h 26m
24 Mar 2024 @ 0029 wc ini8h 57m
23 Mar 2024 @ 1532 wc1h 18m
23 Mar 2024 @ 1414 ie wc ini9h 18m
23 Mar 2024 @ 0456 wc1h 7m
23 Mar 2024 @ 0349 wc1h 24m
23 Mar 2024 @ 0225 wc ini10h 7m
22 Mar 2024 @ 1618 ns wc59m
22 Mar 2024 @ 1519 wc3m 11s 2h 25m
22 Mar 2024 @ 1254 wc58m
22 Mar 2024 @ 1156 wc1h 15m
22 Mar 2024 @ 1041 ie wc ini9h 55m
22 Mar 2024 @ 0046 wc1h 13m

Interval Statistics

Interval Count100
Min19m
Max1d 1h 1m
Mean5h 11m
Median1h 26m
Initial-to-Initial
Interval Count29
Min6h 31m
Max1d 19h 53m
Mean17h 29m
Median14h 17m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
34100 07 Mar 2024 @ 1759 --- JarnoO (wc) Terminal roars; end of series
34074 27 Feb 2024 @ 1440 27 Feb 2024 @ 1507 BigSkyKatie If series continued, we would have missed eruption via webcam as OF was in window and blowing snow would prevent us from discerning a plume on static cam. So continuation of long series is unknown.
33893 20 Jan 2024 @ 0800 --- K.Cooper somewhere between series
33804 16 Jan 2024 @ 0738 --- K.Cooper between series
33783 14 Jan 2024 @ 1314 --- K.Cooper Done.
33749 06 Jan 2024 @ 0802 --- Graham Roars 0802 0804 0813
33735 02 Jan 2024 @ 1650 --- Delta4Heavy85 (Wc) 16s of thin water from Lion, didn't put out enough water for me to count it as a minor.
33302 21 Dec 2023 @ 1440 21 Dec 2023 @ 1500 aferrara Several roars with no eription
29323 01 Nov 2023 @ 1107 01 Nov 2023 @ 1117 Delta4Heavy85 (Wc) BIG roar lasting ~30s at 1107, smaller roars after that. Appears to be in terminal roars
28833 17 Oct 2023 @ 1241 17 Oct 2023 @ 1250 Delta4Heavy85 (Wc) Appears to be in terminal roars
28742 12 Oct 2023 @ 1531 --- JarnoO (wc) just post-eruptive; seems to have been last in series as well
28705 08 Oct 2023 @ 1115 08 Oct 2023 @ 1136 Tara terminal roars, series over
28623 04 Oct 2023 @ 1730 --- Ben VL Terminal roars
28608 03 Oct 2023 @ 0814 03 Oct 2023 @ 0826 Delta4Heavy85 (Wc) Terminal Roars
28485 26 Sep 2023 @ 1609 --- JarnoO (wc) Sustained low jetting for 15s, with sporadic splashes after that. It should've started a series, but failed somehow. Wondering if this introduced a delay of two hours, as it did begin a series at 1818.
28315 18 Sep 2023 @ 0647 --- Graham Splashing
28258 15 Sep 2023 @ 0659 --- K.Cooper VR of no eruption or splashing in the last hour. Seems in between series to me.
28249 14 Sep 2023 @ 0600 --- K.Cooper terminal roars
28180 10 Sep 2023 @ 0822 --- SantaFe108 Terminal roars, end of series.
28162 10 Sep 2023 @ 0608 --- K.Cooper roaring
28147 09 Sep 2023 @ 1034 --- Graham Last in series.
28127 09 Sep 2023 @ 0627 --- K.Cooper roar but not enthusiastic
28045 05 Sep 2023 @ 2125 --- Ben VL End of series
27741 23 Aug 2023 @ 1846 --- Dan A Terminal roars, end of series
27701 20 Aug 2023 @ 1150 --- Dan A Terminal roars, end of series
27697 20 Aug 2023 @ 0720 --- JarnoO (wc) Post-eruptive steaming. Would have been from the initial - no eruption seen since it became light enough for the camera. OFVEC had entered 0711 E ini earlier today (now removed), which is a credible time given what I observed from webcam.
27694 19 Aug 2023 @ 2147 --- Ryan B Terminal roars. Series has likely ended.
27677 19 Aug 2023 @ 0100 --- Ben VL Maybe one minor, but no additional eruptions seen by this time. Thinking series is over.
27665 18 Aug 2023 @ 0754 --- Dan A Terminal roars, end of series
27645 16 Aug 2023 @ 1748 --- Dan A Terminal roars, end of series
27575 13 Aug 2023 @ 2040 --- Dan A Terminal roars, series is over
27532 11 Aug 2023 @ 1921 --- Dan A Terminal roars, end of series
27524 11 Aug 2023 @ 1547 --- minissa Roar!
27271 27 Jul 2023 @ 1655 27 Jul 2023 @ 1900 SantaFe108 No activity since last Lion, end of series.
26984 10 Jul 2023 @ 1940 10 Jul 2023 @ 1950 deanl did several huffs but no eruption - the series must have ended at 6
26895 07 Jul 2023 @ 2220 --- Ben VL Series seems to be over.
26809 03 Jul 2023 @ 1717 --- Kyle roars, probably terminal, end of series
26783 02 Jul 2023 @ 0759 --- Graham Weak splashing, not in series.
26770 01 Jul 2023 @ 0900 --- karenh Terminal roars ~9:00
26751 30 Jun 2023 @ 1900 --- Graham Terminal roars. Likely 2 eruptions were missed by gazers waiting for Grand.
26741 30 Jun 2023 @ 0745 --- Graham Light splashes, not in series.
26717 28 Jun 2023 @ 1315 --- Graham 5th roar. Series probably over.
26707 28 Jun 2023 @ 0717 --- Graham Splashing, not in series.
26695 27 Jun 2023 @ 0723 --- Graham Splashing, not in series.
26678 26 Jun 2023 @ 0629 --- Graham Terminal roars.
26662 25 Jun 2023 @ 1309 --- Graham Series likely over, 5th roar.
26635 24 Jun 2023 @ 1016 --- Graham Looks like series is over.
26588 22 Jun 2023 @ 0856 --- Forestbewithyou Lion is likely done with its series
26559 21 Jun 2023 @ 1211 --- Forestbewithyou Lion likely done with series. Multiple roars with no eruption.
26457 19 Jun 2023 @ 0939 --- Polly Lion series appears to have ended. (Occasional heavy steam)
26411 17 Jun 2023 @ 1932 --- Graham 4th roar, series likely over.
26394 17 Jun 2023 @ 0810 --- Graham Light splashes
26344 15 Jun 2023 @ 1715 --- BobInNV New logger
26322 14 Jun 2023 @ 2010 --- Graham Splashy
26285 13 Jun 2023 @ 1030 --- Graham At least 10 roars with no eruption. Series of 1. NG is having an extended fill anyway.
26220 10 Jun 2023 @ 1800 --- User34 Weak roar, again at 1807
26179 09 Jun 2023 @ 0610 --- Graham Week terminal roars. Series ended overnight.
26142 08 Jun 2023 @ 0612 --- Graham Lightly splashing, in recovery from yesterday's series. NG cycling normally, no boiling.
26109 07 Jun 2023 @ 0535 --- K.Cooper heavily splashing and drinking fountain is on. don't think we've had an initial yet
25974 03 Jun 2023 @ 1142 --- Janet Jones Sustained splash a couple feet above the cone
25793 26 May 2023 @ 0624 --- Graham Splashing, no eruption recently.
25772 25 May 2023 @ 0513 --- JarnoO No signs of a series overnight
25703 22 May 2023 @ 1700 --- Graham 2 roars and some weak steam puffs from Lion. It's likely at the end of the series. I'm heading in for a break.
25683 21 May 2023 @ 2100 21 May 2023 @ 2245 SantaFe108 2100 No initial yet, Kitten in-series, NG has had one short extended fill. 2128 Biggest surge of the interval, suddenly became alot more lively. 2145 Has calmed down since the surge. 2200 No initial yet. No good surges since last one. 2245 Abandoning Lion due to death of flashlight. No initial yet. Go Kitten! Left a red Motorola radio by Lion bench. If anyone finds it tomorrow morning let me know!
25634 21 May 2023 @ 0642 --- Graham Splashy, not in series.
25629 20 May 2023 @ 2130 --- SantaFe108 First splashing observed since previous end of series.
25602 20 May 2023 @ 1800 20 May 2023 @ 1818 SantaFe108 Four weak, dry roars in a row. End of series.
25578 20 May 2023 @ 1033 --- BobInSLC 5 second minor?
25490 17 May 2023 @ 0620 --- Graham Weak terminal roars.
25311 01 May 2023 @ 1805 --- JarnoO (wc) initial post-eruptive
25249 26 Apr 2023 @ 1130 --- DanS Roar Also 1122
25144 10 Apr 2023 @ 0935 --- mhreed Feeble roaring. End of a series.
25125 26 Mar 2023 @ 0943 26 Mar 2023 @ 1017 JarnoO (wc) terminal roars
25083 08 Mar 2023 @ 1808 08 Mar 2023 @ 1915 JarnoO terminal roars?
24836 06 Jan 2023 @ 1736 --- JarnoO just post-eruptive; end of series
24749 05 Dec 2022 @ 0905 05 Dec 2022 @ 0928 Delta4Heavy85 Observed 3 dry roars but no eruption. Seams to be the end of series.
24724 27 Nov 2022 @ 0545 --- Art-P lion was one off. there were puffs from lion 0415-0445 but nothing more.
24717 25 Nov 2022 @ 1720 25 Nov 2022 @ 1725 Delta4Heavy85 Observed three roars on the webcam but no eruption. Seems like the end of the series.
24546 30 Oct 2022 @ 1321 --- SantaFe108 6th dry roar. End of series.
24452 21 Oct 2022 @ 0855 21 Oct 2022 @ 0910 Delta4Heavy85 Four roars but no eruption seems to be a one eruption series.
24178 01 Oct 2022 @ 0838 --- Graham Roared. Probably had an 07xx eruption. Also 0840 weak roar, 0842, 0843, 0845.
24147 28 Sep 2022 @ 1409 28 Sep 2022 @ 1433 SteveO 1409 roar with water, 1415 roar, 1421 roar with water, 1428 weak roar, roar with a spritz of water, 1433 weak roar. End of this Lion series.
24129 26 Sep 2022 @ 1658 26 Sep 2022 @ 1719 SteveO 1658 & 1705 roar with a little water, 1709 light roar, 1716 & 1719 roar with a little water. End of Lion sreies.
24088 25 Sep 2022 @ 0824 --- SteveO Aborted eruption, about 10 seconds on water.
23935 20 Sep 2022 @ 1435 20 Sep 2022 @ 1450 SteveO 1435 roar with a little water, 1439 roar with water, 1441 & 1443 roar with a little water, 1444 & 1446 roar with water, 1450 roar with a little water. Lion has ended this series.
23927 20 Sep 2022 @ 0635 --- Kat Several nice roars ending with large one with approx 20 sec of water.
23915 19 Sep 2022 @ 1158 19 Sep 2022 @ 1214 SteveO 1158 roar no water, 1204 & 1208 roar with a little water, 1211 weak roar, 1214 roar with water.
23895 18 Sep 2022 @ 1151 18 Sep 2022 @ 1217 SteveO 1151, 1201, 1203 & 1204 roar with a little water, 1207 longer roar with more water. 1209 roar with a little water. No further roars. 1217 a little spit of water without a roar.
23862 16 Sep 2022 @ 1401 16 Sep 2022 @ 1417 SteveO Roars at 1401 & 1408 with no water, roar at 1409 & 1410 with a little water. Roar at 1412 & 1413 with no water. Weak roar at 1417.
23764 11 Sep 2022 @ 1620 11 Sep 2022 @ 1640 SantaFe108 Several roars during this time which ultimately amounted to no eruption.
23668 09 Sep 2022 @ 0755 --- Graham This should be the initial as it was splashing 0655.
23574 04 Sep 2022 @ 1905 --- Graham 6th roar with no eruption. Looks like a series of 1 unless it goes really late in the roar series.
22299 03 Jul 2022 @ 0959 --- DaveM Initial - based on duration
22185 28 Jun 2022 @ 1850 --- deanl there was NO second Lion, just twice it huffed and had false starts
21938 11 Jun 2022 @ 2120 --- Graham Initial
21422 22 May 2022 @ 0921 --- Micah Kipple more roars after this but all dry and weak.
21420 22 May 2022 @ 0854 22 May 2022 @ 0920 Micah Kipple Series of about 4 strong roars that ended the series. Strongest roars with attempts to erupt were 0915 and 0915
20613 09 Dec 2021 @ 1208 --- JarnoO (wc) Large roar d=9s (I would consider it a minor). Included one jet to usual in-series eruptive height; fairly certain end of series.
19712 23 Sep 2021 @ 1916 --- Graham Had another minor 1916. GT merged it.
18447 16 Jul 2021 @ 0853 --- JarnoO (wc) Just post-eruptive
EntrySourceLinkComment
19 Sep 2023 @ 1659 JarnoO https://www.youtube.com/watch?v=DuIeJiYwNg0 As captured by the webcam.
01 Mar 2023 @ 1002 Delta4Heavy85 https://adobe.ly/3Y6AUQZ Video of eruption
04 Feb 2020 @ 1052 EricZ https://www.dropbox.com/s/4325w13fudk8h4d/ugbWebcamTime_02042020_105412.mp4?dl=0 Steam cloud @ 1052:30
01 Jan 2020 @ 0231 K.Cooper https://www.youtube.com/watch?v=qBXaTUSQHfU&feature=youtu.be From 0:00 to 1:00
03 Oct 2019 @ 1006 JoeN https://youtu.be/vGhm_8gVqZY Lion video
16 Aug 2015 @ 1110 JSJ https://www.flickr.com/photos/jsjgeology/21658915002 Photo (1 of 6) of Lion Geyser's 11:10 to 11:14 AM eruption on 16 August 2015.
16 Aug 2015 @ 0944 JSJ https://www.flickr.com/photos/jsjgeology/21679511491 Photo (1 of 2) of Lion Geyser's 9:44 AM-onward eruption on 16 August 2015.
15 Aug 2015 @ 1245 JSJ https://www.flickr.com/photos/jsjgeology/21316237110 Photo of Lion Geyser's 12:45 PM-onward eruption on 15 August 2015.
10 Aug 2015 @ 1736 JSJ https://www.flickr.com/photos/jsjgeology/21316396318 Photo of Lion Geyser's 5:36 to 5:41 PM eruption on 10 August 2015.
09 Aug 2015 @ 1422 JSJ https://www.flickr.com/photos/jsjgeology/21477913196 Photo (1 of 5) of Lion Geyser's 2:22 to 2:26 PM eruption on 9 August 2015.
09 Aug 2015 @ 1318 JSJ https://www.flickr.com/photos/jsjgeology/21316186678 Photo (1 of 3) of Lion Geyser's 1:18 to 1:22 PM eruption on 9 August 2015.
09 Aug 2015 @ 1300 JSJ https://www.flickr.com/photos/jsjgeology/20881167754 Photo (1 of 13) of Lion Geyser's 1:00 to 1:01 PM eruption on 9 August 2015.
09 Aug 2015 @ 1142 JSJ https://www.flickr.com/photos/jsjgeology/21512230241 Photo (1 of 8) of Lion Geyser's 11:42 to 11:46 AM eruption on 9 August 2015.
09 Aug 2015 @ 1035 JSJ https://www.flickr.com/photos/jsjgeology/21315549938 Photo (1 of 4) of Lion Geyser's 10:35 to 10:38 AM eruption on 9 August 2015.
03 Jun 2014 @ 1223 JSJ https://www.flickr.com/photos/jsjgeology/15097998831 Photo of Lion Geyser's 12:24 to 12:27 PM eruption on 3 June 2014.
01 Jul 2016 @ 1053 Biddle https://imgur.com/gallery/BzVsLOK/new Beginning of erpution
10 Apr 2016 @ 1450 JSJ https://www.youtube.com/watch?v=VttoHRno1mk Video (via webcam) of Lion Geyser's initial eruption from 2:50 to 2:56 PM on 10 April 2016.
01 Apr 2016 @ 1120 JSJ https://www.flickr.com/photos/jsjgeology/25900442600 Webcam screen capture photo (1 of 3) of Lion Geyser's 11:20 to 11:24 AM eruption on 1 April 2016.
31 Jan 2016 @ 1211 JSJ https://www.flickr.com/photos/jsjgeology/24108596953 Webcam screen capture photo (1 of 3) of the Lion Geyser-Old Faithful Geyser dual eruption from 12:11 to 12:15 PM on 31 January 2016.
24 Dec 2015 @ 1311 JSJ https://www.flickr.com/photos/jsjgeology/23924093756 Webcam screen capture photos (1 or 3) of Lion Geyser's 1:11 to 1:15 PM eruption on 24 December 2015.
BaselineDistance (ft)Description
South side 100North edge of the walk near Heart Spring
North side 100North edge of the walk near North Goggles Geyser