Last Known Eruption
15h 55m ago

Latest Eruptions

EruptionDurationInterval
25 Jun 2017 @ 2257 wc16m
25 Jun 2017 @ 2241 wc min1h 16m
25 Jun 2017 @ 2125 wc1h 18m
25 Jun 2017 @ 2007 wc1h 19m
25 Jun 2017 @ 1848 wc1h 12m
25 Jun 2017 @ 1736 wc1h 16m
25 Jun 2017 @ 1620 ie wc ini13h 30m
25 Jun 2017 @ 0250 wc2h 32m
25 Jun 2017 @ 0018 wc1h 1m
24 Jun 2017 @ 2317 wc1h 6m
24 Jun 2017 @ 2211 wc1h 16m
24 Jun 2017 @ 2055 ini13h 16m
24 Jun 2017 @ 07391h 8m
24 Jun 2017 @ 0631 wc1h 17m
24 Jun 2017 @ 0514 ini7h 22m
23 Jun 2017 @ 2152 wc min8m
23 Jun 2017 @ 2144 wc min1h 25m
23 Jun 2017 @ 2019 wc1h 6m
23 Jun 2017 @ 1913 wc1h 19m
23 Jun 2017 @ 1754 wc ini13h 45m
23 Jun 2017 @ 0409 wc ini15h 50m
22 Jun 2017 @ 1219 wc1h 8m
22 Jun 2017 @ 1111 wc1h 9m
22 Jun 2017 @ 1002 wc1h 15m
22 Jun 2017 @ 0847 ie wc ini18h 42m
21 Jun 2017 @ 1405 wc1h 6m
21 Jun 2017 @ 125928m
21 Jun 2017 @ 1231 wc min1h 4m
21 Jun 2017 @ 1127 wc1h 7m
21 Jun 2017 @ 10201h 2m
21 Jun 2017 @ 09181h 12m
21 Jun 2017 @ 08061h 19m
21 Jun 2017 @ 0647 ini12h 47m
20 Jun 2017 @ 1800 wc2h 35m
20 Jun 2017 @ 1525 ini11h 11m
20 Jun 2017 @ 0414 wc1h 11m
20 Jun 2017 @ 0303 wc1h 13m
20 Jun 2017 @ 0150 wc1h 15m
20 Jun 2017 @ 0035 wc1h 23m
19 Jun 2017 @ 2312 wc ini9h 20m
19 Jun 2017 @ 13521h 21m
19 Jun 2017 @ 1231 ie wc19m
19 Jun 2017 @ 1212 min1h 15m
19 Jun 2017 @ 10571h 6m
19 Jun 2017 @ 09511h 18m
19 Jun 2017 @ 0833 ini17h 24m
18 Jun 2017 @ 1509 wc min15s 1h 6m
18 Jun 2017 @ 140311m
18 Jun 2017 @ 1352 min1h 15m
18 Jun 2017 @ 12371h 15m
18 Jun 2017 @ 11221h 9m
18 Jun 2017 @ 1013 ie1h 7m
18 Jun 2017 @ 0906 wc1h 8m
18 Jun 2017 @ 0758 wc1h 20m
18 Jun 2017 @ 0638 ini9h 5m
17 Jun 2017 @ 2133 wc1h 19m
17 Jun 2017 @ 2014 ini11h 25m
17 Jun 2017 @ 0849 wc1h 6m
17 Jun 2017 @ 0743 ns wc1h 8m
17 Jun 2017 @ 0635 wc1h 11m
17 Jun 2017 @ 0524 wc1h 14m
17 Jun 2017 @ 0410 wc ini18h 17m
16 Jun 2017 @ 0953 wc1h 2m
16 Jun 2017 @ 08511h 12m
16 Jun 2017 @ 07391h 4m
16 Jun 2017 @ 06351h 5m
16 Jun 2017 @ 0530 wc1h 11m
16 Jun 2017 @ 0419 wc ini11h 33m
15 Jun 2017 @ 1646 wc1h 8m
15 Jun 2017 @ 1538 wc1h 5m
15 Jun 2017 @ 1433 wc1h 15m
15 Jun 2017 @ 1318 ini12h 2m
15 Jun 2017 @ 0116 wc1h 10m
15 Jun 2017 @ 0006 wc1h 20m
14 Jun 2017 @ 2246 wc ini11h 40m
14 Jun 2017 @ 1106 wc min12m
14 Jun 2017 @ 1054 wc min1h 7m
14 Jun 2017 @ 0947 wc1h 2m
14 Jun 2017 @ 0845 wc1h 15m
14 Jun 2017 @ 0730 wc ini14h 41m
13 Jun 2017 @ 1649 wc1h 13m
13 Jun 2017 @ 1536 wc1h 10m
13 Jun 2017 @ 14261h 22m
13 Jun 2017 @ 1304 wc ini10h 36m
13 Jun 2017 @ 0228 wc1h 27m
13 Jun 2017 @ 0101 wc ini12h 17m
12 Jun 2017 @ 1244 wc36m
12 Jun 2017 @ 1208 wc min1m 35s 1h 12m
12 Jun 2017 @ 105634m
12 Jun 2017 @ 1022 wc min1h 8m
12 Jun 2017 @ 0914 wc13m
12 Jun 2017 @ 0901 wc min1m 1h 6m
12 Jun 2017 @ 07551h 7m
12 Jun 2017 @ 0648 wc1h 7m
12 Jun 2017 @ 0541 wc1h 10m
12 Jun 2017 @ 0431 wc1h 8m
12 Jun 2017 @ 0323 wc1h 15m
12 Jun 2017 @ 0208 wc1h 17m
12 Jun 2017 @ 0051 wc ini10h 47m
11 Jun 2017 @ 14041h 3m

Interval Statistics

Interval Count100
Min8m
Max18h 42m
Mean3h 27m
Median1h 13m
Initial-to-Initial
Interval Count19
Min10h 24m
Max1d 2h 0m
Mean17h 14m
Median15h 41m

Latest Notes

Note IDStart TimeEnd TimeEntrantNote
4335 19 Jun 2017 @ 0818 --- DGInc Have not seen a (potential) Lion eruption on the overnight captures.
4121 23 May 2017 @ 0314 --- DGInc POSSIBLE eruption. Too dark for me to be certain, even for a questionable entry.
4122 23 May 2017 @ 0143 --- DGInc POSSIBLE initial of series. Too dark for me to be certain, even for a questionable entry.
3964 01 Apr 2017 @ 1310 --- Betty chat visitor report it is ie. Maybe the initial
3956 20 Feb 2017 @ 0351 20 Feb 2017 @ 0515 DGInc A set of minors ended the series. The larger minors have occured at the following times: 0351, 0404, 0417, 0435 and 0449. Each of these had a duration of ~30 seconds to ~1 minute.
3909 14 Jan 2017 @ 0954 --- DaveM Either Lion or Beehive at 0820
3907 09 Jan 2017 @ 0058 --- Betty Maybe erupting, but it could be Beehive as well. Lasted about 6 min, so it was possibly initial
3874 16 Nov 2016 @ 1824 16 Nov 2016 @ 1849 DGInc Might've erupted or tried to erupt. I cannot tell if it actually DID erupt, since it was quite foggy at 1824 and wasn't able to see any further than Old Faithful at 1849. Series continued till at least 2156.
3781 13 Oct 2016 @ 1409 13 Oct 2016 @ 1429 udo Roars 1409, 1414, 1416, 1417, 1419, 1423,
3741 03 Oct 2016 @ 0252 --- Betty Possible eruption behind OF steam
3681 17 Sep 2016 @ 1639 --- Graham Big splash out of Lion but not enough to call a minor. Looks like a series of 1 unless it can come back from that splash and erupt.
3600 04 Sep 2016 @ 0940 --- BobInSLC Almost erupted, strongest try without going I've seen. lasted 2 minutes.
3564 28 Aug 2016 @ 1431 --- Betty One tall burst, lasted ~20 sec
3506 18 Aug 2016 @ 1505 18 Aug 2016 @ 1513 Casey Two powerful seconds-long surges at 1505 and 1513 observed on webcam. There was debate as to whether they qualified as minor eruptions or not.
3125 23 Jun 2016 @ 1113 --- udo Roar 1113. Roarlet 1114 & 1123 & 1126 & 1128
3058 12 Jun 2016 @ 0043 --- DGInc MAY have erupted. It was suddenly in the background very steamy while OF erupted and I'm pretty sure it wasn't the steam of OF.
2960 03 Jun 2016 @ 1516 03 Jun 2016 @ 1628 JSJ Noticed Lion spits at 1516, 1525, 1530, 1542, 1543, 1605, and 1628.
2877 22 May 2016 @ 0321 --- DaveM Lion erupted. I hope there is a reliable observer around somewhere.
2874 22 May 2016 @ 0150 --- DaveM Lion erupted. But since "eyes in the basin are most often more reliable than eyes through the webcam" I hope someone in the basin saw the eruption.
2872 22 May 2016 @ 0032 --- DaveM Lion had an initial eruption. But since "eyes in the basin are most often more reliable than eyes through the webcam" I hope someone in the basin saw the eruption.
2764 20 Apr 2016 @ 1213 --- udo 1st roar 1213, 2nd 1217, 3rd 1219, 4th 1222, burp 1228, weak 1233. DNE
2744 16 Apr 2016 @ 1840 --- User34 New "drinking fountain" vent a couple feet to the right and in front of the old one
2722 09 Apr 2016 @ 1058 09 Apr 2016 @ 1059 JSJ Low, brief spouting at 1058 and 1059.
2718 26 Mar 2016 @ 2017 --- Graham Still no Lion since this morning.
2709 12 Mar 2016 @ 1307 12 Mar 2016 @ 1322 JSJ Several seconds of moderately low spouting at 1307 (webcam observation). Also a couple seconds of low spouting at near-latest 1319. Spitting at late 1321 and early 1322.
2669 06 Feb 2016 @ 1259 06 Feb 2016 @ 1300 JSJ Brief, moderately low spouting from 1259 to early 1300.
2653 17 Jan 2016 @ 1529 17 Jan 2016 @ 1541 JSJ Eruption # 2 in Lion Geyser's series very likely occurred while webcam was focused on Grand Geyser's 1529 to 1541 eruption.
2649 17 Jan 2016 @ 0745 --- Graham Doing terminal roars, no more eruptions in series.
2644 15 Jan 2016 @ 1700 15 Jan 2016 @ 1715 JSJ Brief eruptive spouting from late 1700 to early 1701 & at 1714.
2424 26 Sep 2015 @ 1327 --- JSJ ~1 to 2 seconds of moderately low spouting at 1327 (webcam observation).
2286 07 Sep 2015 @ 1146 --- BobInSLC Lion minors at 11:46 and 11:48
2146 15 Aug 2015 @ 1123 15 Aug 2015 @ 1124 JSJ Occasional spitting at 1123 to 1124.
2066 09 Aug 2015 @ 0600 --- Jake splashing above cone. working towards initial
2039 07 Aug 2015 @ 0550 --- RyanMaurer huffing and puffing but no eruption. must have ended a series.
1847 06 Jul 2015 @ 2004 --- BobInSLC big sustained splash, almost erupted
731 12 Jan 2013 @ 0755 --- Graham Probably a Lion eruption at 0755ie based on stean clouds but not sure. Matches up with the 0905 time reported later.
715 14 Nov 2012 @ 1214 --- Pat Snyder 1214 Lion is an initial.
688 30 Oct 2012 @ 1417 --- BB I believe the 1417 Lion was a minor. Just visible in one frame.
505 22 Sep 2012 @ 2150 22 Sep 2012 @ 2215 Jake series end. Failed roars 2150 - 2215. I left. N Goggles continued regular fill/drop cycle.
393 30 Aug 2012 @ 1314 30 Aug 2012 @ 1317 vw Lion had a fairly short eruption at 1314 ns, followed by a minor at 1317. Appeared to be two distinct eruptions on the stream.\r\n
309 19 Jun 2012 @ 0000 19 Jun 2012 @ 2359 AndrewW Lion is and sjould be marked as an initial.
282 08 Jun 2012 @ 2124 --- BB It looked like Lion started another series right before dark. Not 100% sure but it looked like it started around 2124, heavy steam in about three or four captures before it got too dark to see anything
232 15 May 2012 @ 1711 --- WillBoekel Roar 17:11
233 15 May 2012 @ 1711 --- WillBoekel Roar 17:11wc
223 09 May 2012 @ 1641 --- WillBoekel 1641WC roar
222 09 May 2012 @ 1636 --- WillBoekel 1636 Roar
194 29 Apr 2012 @ 1120 --- WillBoekel roar 1120
151 02 Apr 2012 @ 0705 02 Apr 2012 @ 0715 AndrewW Some said they saw lion between 705 and 715. Well see
146 26 Mar 2012 @ 0000 26 Mar 2012 @ 2359 Graham Could not see Lion for a couple of hours so it probably erupted more.
107 16 Feb 2012 @ 0000 16 Feb 2012 @ 2359 AndrewW I\\\'d like to mention lion\\\'s interval because this one is exceptionally long even for series. Either its erupting at night or just a long interval. I guess we\\\'ll wait a long time before we use the d word though.
76 05 Jan 2012 @ 0228 --- BB There was something erupting at 0228. I was thinking Lion, in the chatroom there was a feeling it might have been BH, based on the interval from the last Lion eruption on 01/04.\r\n\r\nI finally compared captures, and I still feel it was rather Lion than BH. The location was too far right for BH.\r\n\r\nUnfortunately it was too dark later, so I don\'t know if there was another eruption later on.
728 26 Nov 2011 @ 1224 --- WillBoekel Electronic logger failed at 12:24
59 14 Oct 2011 @ 0217 14 Oct 2011 @ 0309 BB I have three nighttime eruptions in my captures that are hard to tell apart. After comparing them to daytime captures I think that BH probably erupted at 0217 and Lion at 0134 and 0309. These are all ie times as I only capture one frame every 30 seconds.
28 14 Sep 2011 @ 0320 --- BB One capture with heavy steam from Lion at 3:20... maybe a minor?
974 23 Jun 2008 @ 1100 23 Jun 2008 @ 1159 BoekelUpload 11:xx
962 24 May 2008 @ 1540 24 May 2008 @ 1549 BoekelUpload 15:4x
957 02 May 2008 @ 1010 02 May 2008 @ 1019 BoekelUpload 10:1x
1354 13 Jun 2007 @ 1240 13 Jun 2007 @ 1249 BoekelUpload 12:4x
534 03 May 1977 @ 0857 --- BoekelUpload 0857 puffed
484 28 Oct 1975 @ 0000 28 Oct 1975 @ 1200 BoekelUpload active am
EntrySourceLinkComment
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.
08 Nov 2015 @ 1339 JSJ https://www.flickr.com/photos/jsjgeology/22462290807/in/photostream/ Webcam screen capture photo of Lion Geyser's 1:39 to 1:43 PM eruption on 8 November 2015.
09 May 2015 @ 1141 DaveM https://www.youtube.com/watch?v=zHeEI0QqiJA Capture showing the Lion did nto erupt at 1141. Note capture continues until Castle which started at 1210.
12 Mar 2014 @ 0343 lt http://imgur.com/1QfYneu screencap of static image
18 Dec 2013 @ 1154 Richlg96 http://youtu.be/wKIUPHHEGW0 Lion 1154 2013/12/18
07 Sep 2013 @ 1415 Richlg96 http://youtu.be/IzwV2p0HZh8
BaselineDistance (ft)Description
South side 100North edge of the walk near Heart Spring
North side 100North edge of the walk near North Goggles Geyser


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