Last Known Eruption
5h 45m ago

Latest Eruptions

Eruption DurationInterval
21 Feb 2024 @ 2208 wc min1h 17m
21 Feb 2024 @ 2051 wc1h 16m
21 Feb 2024 @ 1935 wc1h 39m
21 Feb 2024 @ 1756 ie wc ini5h 52m
21 Feb 2024 @ 1204 wc3m 41s 1h 21m
21 Feb 2024 @ 1043 ini9h 38m
21 Feb 2024 @ 0105 wc1h 37m
20 Feb 2024 @ 2328 wc ini5h 56m
20 Feb 2024 @ 1732 ie wc6h 43m
20 Feb 2024 @ 1049 ie ini8h 4m
20 Feb 2024 @ 0245 wc1h 9m
20 Feb 2024 @ 0136 wc1h 18m
20 Feb 2024 @ 0018 wc ini13h 19m
19 Feb 2024 @ 1059 ns1h 44m
19 Feb 2024 @ 0915 ns ini6h 46m
19 Feb 2024 @ 0229 wc1h 29m
19 Feb 2024 @ 0100 wc ini7h 33m
18 Feb 2024 @ 1727 ie wc1h 9m
18 Feb 2024 @ 16181h 20m
18 Feb 2024 @ 1458 ini9h 54m
18 Feb 2024 @ 0504 wc1h 10m
18 Feb 2024 @ 0354 wc1h 28m
18 Feb 2024 @ 0226 wc ini10h 25m
17 Feb 2024 @ 1601 wc min1h 11m
17 Feb 2024 @ 1450 wc3m 32s 41m
17 Feb 2024 @ 1409 wc min1m 22s 1h 19m
17 Feb 2024 @ 1250 ini12h 58m
16 Feb 2024 @ 2352 wc ini12h 5m
16 Feb 2024 @ 1147 min58m
16 Feb 2024 @ 1049 wc1h 7m
16 Feb 2024 @ 09421h 17m
16 Feb 2024 @ 0825 ini7h 46m
16 Feb 2024 @ 0039 wc24m
16 Feb 2024 @ 0015 wc min1h 15m
15 Feb 2024 @ 2300 wc1h 27m
15 Feb 2024 @ 2133 wc ini9h 4m
15 Feb 2024 @ 1229 ie1h 16m
15 Feb 2024 @ 1113 ns ini6h 36m
15 Feb 2024 @ 0437 wc1h 20m
15 Feb 2024 @ 0317 wc ini11h 47m
14 Feb 2024 @ 1530 wc1h 27m
14 Feb 2024 @ 1403 wc ini18h 59m
13 Feb 2024 @ 1904 wc53m
13 Feb 2024 @ 1811 wc38m
13 Feb 2024 @ 1733 wc min1m 25s 1h 4m
13 Feb 2024 @ 1629 ns wc>2m 25s 51m
13 Feb 2024 @ 15381h 7m
13 Feb 2024 @ 1431 wc1h 24m
13 Feb 2024 @ 1307 wc ini9h 23m
13 Feb 2024 @ 0344 wc1h 28m
13 Feb 2024 @ 0216 wc ini11h 22m
12 Feb 2024 @ 1454 wc min28s 1h 4m
12 Feb 2024 @ 13501h 15m
12 Feb 2024 @ 1235 wc3m 26s 1h 20m
12 Feb 2024 @ 1115 wc ini6m 34s 8h 59m
12 Feb 2024 @ 0216 wc1h 32m
12 Feb 2024 @ 0044 wc ini7h 44m
11 Feb 2024 @ 1700 wc4m 8s 2h 58m
11 Feb 2024 @ 1402 ini8h 3m
11 Feb 2024 @ 0559 wc1h 22m
11 Feb 2024 @ 0437 wc ini8h 46m
10 Feb 2024 @ 1951 wc1h 26m
10 Feb 2024 @ 1825 wc ini6h 39m
10 Feb 2024 @ 1146 wc min24s 1h 12m
10 Feb 2024 @ 1034 wc3m 27s 1h 24m
10 Feb 2024 @ 0910 wc ini6m 54s 7h 59m
10 Feb 2024 @ 0111 wc1h 13m
09 Feb 2024 @ 2358 wc1h 33m
09 Feb 2024 @ 2225 wc ini6h 8m
09 Feb 2024 @ 1617 wc min7s 1h 28m
09 Feb 2024 @ 1449 ns1h 27m
09 Feb 2024 @ 1322 ns wc ini10h 1m
09 Feb 2024 @ 0321 wc1h 19m
09 Feb 2024 @ 0202 wc9h 44m
08 Feb 2024 @ 1618 min1h 42m
08 Feb 2024 @ 1436 ns1h 19m
08 Feb 2024 @ 13171h 27m
08 Feb 2024 @ 1150 ini11h 1m
08 Feb 2024 @ 0049 wc1h 13m
07 Feb 2024 @ 2336 wc14m
07 Feb 2024 @ 2322 wc min1h 27m
07 Feb 2024 @ 2155 wc10h 6m
07 Feb 2024 @ 1149 wc1h 18m
07 Feb 2024 @ 1031 wc1h 16m
07 Feb 2024 @ 0915 ie wc1h 33m
07 Feb 2024 @ 0742 wc ini20h 5m
06 Feb 2024 @ 1137 ie1h 28m
06 Feb 2024 @ 1009 ns1h 25m
06 Feb 2024 @ 0844 wc ini~6m 45s 5h 9m
06 Feb 2024 @ 0335 wc1h 23m
06 Feb 2024 @ 0212 wc ini11h 59m
05 Feb 2024 @ 1413 ini6h 43m
05 Feb 2024 @ 0730 wc min1h 27m
05 Feb 2024 @ 0603 wc1h 43m
05 Feb 2024 @ 0420 wc9h 0m
04 Feb 2024 @ 1920 ns ini8h 45m
04 Feb 2024 @ 1035 wc3m 53s 16m
04 Feb 2024 @ 1019 wc min51s 1h 38m
04 Feb 2024 @ 0841 wc2h 12m
04 Feb 2024 @ 0629 wc1h 25m

Interval Statistics

Interval Count100
Min14m
Max20h 5m
Mean4h 15m
Median1h 28m
Initial-to-Initial
Interval Count32
Min6h 32m
Max1d 4h 8m
Mean13h 9m
Median11h 3m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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
18060 23 Jun 2021 @ 1540 23 Jun 2021 @ 1635 CrisG several nice roars with few splashes seen during this time, but unfortunately no eruption. chased off the hill by impending rain.
17767 14 Jun 2021 @ 0902 --- Kat Lion appears post eruptive when cam moved to hill
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