Last Known Eruption
12h 51m ago

Latest Eruptions

Eruption DurationInterval
20 Oct 2018 @ 1704 wc59m
20 Oct 2018 @ 16053m 37s 1h 4m
20 Oct 2018 @ 1501 wc59m
20 Oct 2018 @ 1402 wc1h 0m
20 Oct 2018 @ 1302 wc1h 17m
20 Oct 2018 @ 1145 wc ini15h 5m
19 Oct 2018 @ 2040 wc1h 8m
19 Oct 2018 @ 1932 wc1h 4m
19 Oct 2018 @ 1828 wc57m
19 Oct 2018 @ 1731 wc1h 12m
19 Oct 2018 @ 1619 wc ini14h 26m
19 Oct 2018 @ 0153 wc1h 21m
19 Oct 2018 @ 0032 wc ini10h 7m
18 Oct 2018 @ 1425 wc1h 52m
18 Oct 2018 @ 1233 wc1h 6m
18 Oct 2018 @ 1127 wc ini14h 8m
17 Oct 2018 @ 2119 wc1h 3m
17 Oct 2018 @ 2016 wc1h 11m
17 Oct 2018 @ 1905 wc1h 10m
17 Oct 2018 @ 1755 wc57m
17 Oct 2018 @ 1658 wc1h 1m
17 Oct 2018 @ 1557 wc~3m 18s 1h 10m
17 Oct 2018 @ 1447 wc ini14h 24m
17 Oct 2018 @ 0023 wc1h 3m
16 Oct 2018 @ 2320 wc1h 8m
16 Oct 2018 @ 2212 wc1h 1m
16 Oct 2018 @ 2111 wc55m
16 Oct 2018 @ 2016 wc1h 3m
16 Oct 2018 @ 1913 wc1h 21m
16 Oct 2018 @ 1752 wc ini17h 31m
16 Oct 2018 @ 0021 wc57m
15 Oct 2018 @ 2324 wc59m
15 Oct 2018 @ 2224:52 wc1h 0m 10s
15 Oct 2018 @ 2124:42 wc1h 14m 24s
15 Oct 2018 @ 2010:18 wc ini21h 31m
14 Oct 2018 @ 2239 wc1h 23m
14 Oct 2018 @ 2116 wc1h 2m
14 Oct 2018 @ 2014 wc1h 0m
14 Oct 2018 @ 1914 ie wc maj25m
14 Oct 2018 @ 1849 wc min1h 23m
14 Oct 2018 @ 1726 wc1h 12m
14 Oct 2018 @ 1614 wc1h 15m
14 Oct 2018 @ 1459 wc ini1d 31m
13 Oct 2018 @ 1428 wc59m
13 Oct 2018 @ 1329 wc1h 4m
13 Oct 2018 @ 1225 wc1h 12m
13 Oct 2018 @ 1113 ns wc1h 16m
13 Oct 2018 @ 0957 ns wc2h 32m
13 Oct 2018 @ 0725 wc ini19h 27m
12 Oct 2018 @ 11581h 32m
12 Oct 2018 @ 1026 wc2h 20m
12 Oct 2018 @ 0806 wc1h 6m
12 Oct 2018 @ 0700 wc1h 12m
12 Oct 2018 @ 0548 wc1h 13m
12 Oct 2018 @ 0435 wc1h 8m
12 Oct 2018 @ 0327 wc1h 22m
12 Oct 2018 @ 0205 wc56m
12 Oct 2018 @ 0109 wc1h 14m
11 Oct 2018 @ 2355 wc ini17h 58m
11 Oct 2018 @ 0557 wc59m
11 Oct 2018 @ 0458 wc57m
11 Oct 2018 @ 0401 wc1h 7m
11 Oct 2018 @ 0254 wc1h 16m
11 Oct 2018 @ 0138 wc ini22h 30m
10 Oct 2018 @ 0308 wc17m
10 Oct 2018 @ 0251 wc min1h 8m
10 Oct 2018 @ 0143 wc1h 7m
10 Oct 2018 @ 0036 wc1h 15m
09 Oct 2018 @ 2321 wc1h 33m
09 Oct 2018 @ 2148 wc1h 14m
09 Oct 2018 @ 2034 wc1h 19m
09 Oct 2018 @ 1915 wc ini9h 49m
09 Oct 2018 @ 09261h 21m
09 Oct 2018 @ 0805 ie wc ini8h 23m
08 Oct 2018 @ 2342 ? wc56m
08 Oct 2018 @ 2246 ? wc1h 18m
08 Oct 2018 @ 2128 wc1h 13m
08 Oct 2018 @ 2015 wc1h 15m
08 Oct 2018 @ 1900 ini9h 35m
08 Oct 2018 @ 0925 wc2h 17m
08 Oct 2018 @ 0708 wc1h 4m
08 Oct 2018 @ 0604 wc1h 22m
08 Oct 2018 @ 0442 wc ini9h 41m
07 Oct 2018 @ 1901 wc1h 18m
07 Oct 2018 @ 1743 wc ini11h 18m
07 Oct 2018 @ 0625 wc min1h 19m
07 Oct 2018 @ 0506 wc1h 8m
07 Oct 2018 @ 0358 wc1h 8m
07 Oct 2018 @ 0250 wc1h 18m
07 Oct 2018 @ 0132 wc1h 2m
07 Oct 2018 @ 0030 wc53m
06 Oct 2018 @ 2337 wc54m
06 Oct 2018 @ 2243 wc ini21h 35m
06 Oct 2018 @ 0108 wc1h 8m
06 Oct 2018 @ 0000 wc1h 8m
05 Oct 2018 @ 2252 wc1h 8m
05 Oct 2018 @ 2144 wc1h 5m
05 Oct 2018 @ 2039 wc1h 6m
05 Oct 2018 @ 1933 wc1h 4m
05 Oct 2018 @ 18291h 20m

Interval Statistics

Interval Count100
Min17m
Max1d 31m
Mean3h 35m
Median1h 12m
Initial-to-Initial
Interval Count17
Min10h 59m
Max1d 7h 34m
Mean20h 51m
Median20h 40m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
10620 18 Oct 2018 @ 1536 --- MikeG Possible minor eruption seen on 40x speed GOSA captures.
10389 23 Sep 2018 @ 1252 --- DGInc 'Minor minor' at this time. To me seemed more than a roar. d=~6s.
10329 21 Sep 2018 @ 1715 --- Kitt B NPS just announced over radio that they will be opening the boardwalk section from Sawmill to Lion and along the front of Geyser Hill sometime this evening.
10390 20 Sep 2018 @ 1010 --- Siegmund Splashing and puffing (not in series yet)
10384 19 Sep 2018 @ 1023 19 Sep 2018 @ 1040 Siegmund Tried and failed to have 20th eruption in yesterday's series. Roars 1023, 1031, and 1037, "sneezes" 1034, 1035, and 1040, but no large splashes or serious attempt at erupting.
10286 18 Sep 2018 @ 1506 --- udo One of the bubblers that normally are only active before an initial is active now, assuming we're in a series.
10033 04 Sep 2018 @ 1926 --- BobInSLC good try at erupting or 30 second minor
9306 27 Jul 2018 @ 1409 --- DGInc Very good attempt with water just above the cone, though didn't build into an eruption.
8611 10 Jun 2018 @ 0424 --- DGInc Steaming heavily, some splashes/jets seen. Either late ie or didn't quite manage to erupt. [Edit after 0418 wc ini entry: caught the end of the initial]
8013 27 Apr 2018 @ 0636 --- Micah Kipple Light splashing
7959 12 Mar 2018 @ 1047 --- Kevin L Could have had a 2nd between 1036 and 1047. Cam was zoomed into the Grand eruption during that time. No 3rd, just a few puffs.
7956 08 Mar 2018 @ 1542 --- DaveM major eruption at 1542 after 1539 minor
7948 20 Feb 2018 @ 0435 --- Betty Seemed to erupt, seen on overnight capture, but view was not clear enough to be sure
7881 28 Jan 2018 @ 0715 --- Graham Series of roars but no eruption. Booo.
7854 28 Nov 2017 @ 2222 28 Nov 2017 @ 2359 DGInc At least 2 eruptions were missed due to steam. Dangit, steam from between Castle and Grand!
7837 22 Nov 2017 @ 0235 --- jh23487 There was a bit of steam from Lion from 0235 to 0236, possibly a minor?
7816 05 Nov 2017 @ 0415 --- DGInc Appeared to be in a post-eruptive steam phase.
6207 09 Sep 2017 @ 1148 09 Sep 2017 @ 1223 udo 6 roars, 3 with splashes, series ended.
5668 03 Sep 2017 @ 0955 --- udo Last reported eruption was 0608. Bubblers are drooling less than 4 hours afterwards.
4500 19 Jul 2017 @ 1120 --- udo Water is flowing from both bubblers bit not bursting to any significant height yet.
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
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.
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.
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 EmilyW 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 EmilyW 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 EmilyW 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
6857 26 Sep 1992 @ 1620 26 Sep 1992 @ 1629 DGInc 16:2x
5563 14 Aug 1992 @ 2030 14 Aug 1992 @ 2039 DGInc 20:3x ie ?
5462 18 Jul 1992 @ 1205 --- DGInc roars
5453 13 Jul 1992 @ 2200 13 Jul 1992 @ 2209 DGInc 22:0x
5419 06 Jul 1992 @ 2210 06 Jul 1992 @ 2219 DGInc 22:1x
5278 26 May 1992 @ 1108 --- DGInc roar, no eruption
5039 26 Feb 1992 @ 1520 --- DGInc roar only
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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