Last Known Eruption
47m ago
Predicted Next Eruption
Today at 1503 ± 13 minutes

Latest Eruptions

Eruption DurationInterval
22 Apr 2019 @ 1326 ns wc1h 46m
22 Apr 2019 @ 1140 ie wc1h 30m
22 Apr 2019 @ 1010 ie wc1h 39m
22 Apr 2019 @ 0831 wc long1h 29m
22 Apr 2019 @ 0702 wc long1h 33m
22 Apr 2019 @ 0529 wc long1h 43m
22 Apr 2019 @ 0346 wc1h 31m
22 Apr 2019 @ 0215 ie wc long3h 9m
21 Apr 2019 @ 2306 wc long1h 30m
21 Apr 2019 @ 2136 wc long1h 22m
21 Apr 2019 @ 2014 wc long1h 41m
21 Apr 2019 @ 1833 wc long1h 44m
21 Apr 2019 @ 1649 ie wc long1h 23m
21 Apr 2019 @ 1526 wc1h 37m
21 Apr 2019 @ 1349 wc long1h 35m
21 Apr 2019 @ 1214 wc long~4m 17s 1h 33m
21 Apr 2019 @ 1041 ns wc long1h 27m
21 Apr 2019 @ 0914 wc long1h 44m
21 Apr 2019 @ 0730 wc long1h 28m
21 Apr 2019 @ 0602 wc long1h 49m
21 Apr 2019 @ 0413 wc long6h 8m
20 Apr 2019 @ 2205 wc long1h 44m
20 Apr 2019 @ 2021 wc long1h 36m
20 Apr 2019 @ 1845 wc long1h 27m
20 Apr 2019 @ 1718 wc long1h 34m
20 Apr 2019 @ 1544 wc long1h 43m
20 Apr 2019 @ 1401 wc long1h 25m
20 Apr 2019 @ 1236 wc long1h 35m
20 Apr 2019 @ 1101 A long1h 38m
20 Apr 2019 @ 0923 ns wc1h 36m
20 Apr 2019 @ 0747 wc long~4m 8s 1h 37m
20 Apr 2019 @ 0610 wc long1h 38m
20 Apr 2019 @ 0432 wc long1h 36m
20 Apr 2019 @ 0256 wc long1h 34m
20 Apr 2019 @ 0122 wc long1h 47m
19 Apr 2019 @ 2335 wc long3h 13m
19 Apr 2019 @ 2022 wc long1h 26m
19 Apr 2019 @ 1856 wc long~3m 45s 1h 46m
19 Apr 2019 @ 1710 wc long~4m 25s 1h 34m
19 Apr 2019 @ 1536 wc long>3m 25s 1h 39m
19 Apr 2019 @ 1357 wc long~3m 58s 1h 33m
19 Apr 2019 @ 1224 wc long1h 33m
19 Apr 2019 @ 1051 long1h 36m
19 Apr 2019 @ 0915 wc long1h 33m
19 Apr 2019 @ 0742 wc long1h 40m
19 Apr 2019 @ 0602 wc long1h 34m
19 Apr 2019 @ 0428 wc long9h 10m
18 Apr 2019 @ 1918 wc long1h 39m
18 Apr 2019 @ 1739 wc long1h 43m
18 Apr 2019 @ 1556 wc long~4m 5s 1h 26m
18 Apr 2019 @ 1430 wc long~3m 59s 1h 30m
18 Apr 2019 @ 1300 ie wc long3h 9m
18 Apr 2019 @ 095121h 45m
17 Apr 2019 @ 1206 A4h 28m
17 Apr 2019 @ 0738 ns wc long1h 53m
17 Apr 2019 @ 0545 wc long1h 28m
17 Apr 2019 @ 0417 wc long7h 51m
16 Apr 2019 @ 2026 ie wc1h 28m
16 Apr 2019 @ 1858 ns wc long1h 30m
16 Apr 2019 @ 1728 wc long1h 38m
16 Apr 2019 @ 1550 ns wc long1h 33m
16 Apr 2019 @ 1417 wc long<3m 42s 1h 51m
16 Apr 2019 @ 1226 ie wc long1h 26m
16 Apr 2019 @ 1100 wc long1h 33m
16 Apr 2019 @ 0927 wc long1h 42m
16 Apr 2019 @ 0745 wc long1h 25m
16 Apr 2019 @ 0620 wc long1h 25m
16 Apr 2019 @ 0455 wc long6h 27m
15 Apr 2019 @ 2228 ? wc3h 15m
15 Apr 2019 @ 1913 wc long1h 43m
15 Apr 2019 @ 1730 wc long1h 39m
15 Apr 2019 @ 1551 wc long1h 35m
15 Apr 2019 @ 1416 ie wc long1h 33m
15 Apr 2019 @ 1243 wc long1h 31m
15 Apr 2019 @ 1112 wc long1h 45m
15 Apr 2019 @ 0927 wc long1h 23m
15 Apr 2019 @ 0804 wc long1h 52m
15 Apr 2019 @ 0612 wc1h 40m
15 Apr 2019 @ 0432 wc long7h 56m
14 Apr 2019 @ 2036 wc1h 50m
14 Apr 2019 @ 1846 wc long1h 22m
14 Apr 2019 @ 1724 wc long1h 47m
14 Apr 2019 @ 1537 wc long1h 39m
14 Apr 2019 @ 1358 wc long>3m 43s 1h 34m
14 Apr 2019 @ 1224 wc long1h 27m
14 Apr 2019 @ 1057 wc long1h 44m
14 Apr 2019 @ 0913 wc1h 30m
14 Apr 2019 @ 0743 wc1h 31m
14 Apr 2019 @ 0612 wc long9h 41m
13 Apr 2019 @ 2031 wc1h 36m
13 Apr 2019 @ 1855 wc long1h 35m
13 Apr 2019 @ 1720 ns wc long1h 28m
13 Apr 2019 @ 1552 wc long1h 45m
13 Apr 2019 @ 1407 wc long1h 34m
13 Apr 2019 @ 1233 ie wc1h 33m
13 Apr 2019 @ 1100 wc1h 33m
13 Apr 2019 @ 0927 ie wc1h 28m
13 Apr 2019 @ 0759 ie wc long1h 35m
13 Apr 2019 @ 0624 ns wc long1h 33m
13 Apr 2019 @ 0451 wc long1h 31m

Interval Statistics

Interval Count100
Min1h 22m
Max21h 45m
Mean2h 15m
Median1h 35m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
10739 16 Nov 2018 @ 1845 --- STS Steam post-eruption filling entire viewing area.
10615 16 Oct 2018 @ 0417 --- JarnoO Large preplay for ~30s.
9554 08 Aug 2018 @ 1947 --- c.barwin This eruption was featured live on the final evening of National Geographic's Live show.
9536 08 Aug 2018 @ 0705 --- JarnoO ~30s sustained pre-eruption preplay.
9498 06 Aug 2018 @ 1939 --- c.barwin This eruption was covered on the 8/6/18 National Geographic's Yellowstone Live show.
8712 16 Jun 2018 @ 0912 --- JarnoO Large, sustained preplay made me think OF was going to start. It didn't.
7964 02 Apr 2018 @ 1140 --- Kevin L Snow was so heavy OF area was totally a whiteout on both streaming and static cam
7955 08 Mar 2018 @ 0643 --- DaveM This eruption was a long duration 3m10s
7817 09 Nov 2017 @ 0632 --- JarnoO Appears to be post-eruptive. Runoff channels steamy. Temperature as of writing 23°F.
7798 30 Oct 2017 @ 1017 30 Oct 2017 @ 1018 JarnoO Strong preplay, which could've resulted in an eruption.
7283 25 Sep 2017 @ 0924 --- Kitt B preplay, so previous eruption was a short
6996 23 Sep 2017 @ 0632 --- JarnoO ~45s strong preplay which usually results in an eruption. No eruption followed.
5071 19 Aug 2017 @ 1817 --- Graham Really big and long preplay that would normally start the eruption.
4503 19 Jul 2017 @ 1500 --- SteveO VC in now predicting Old Faithful 98 minutes + or - 10 minutes
4120 23 May 2017 @ 0513 --- JarnoO Was pre-eruptive spouting. Likely went before 0530.
3270 09 Jul 2016 @ 0246 --- JarnoO Looked like it was in a post-eruptive phase. Definitely went during nightly reset.
3220 06 Jul 2016 @ 0207 --- smousley This is my first time on the site. I live in Dubai, hence the odd time of this note. I was looking at the ABC News Live cam, which is not so live, and came here to find out when the next eruption of OF might be. Then is seem strange that there is no reported eruption for over 4 hours. Is it because no one reported one?
3141 27 Jun 2016 @ 0216 --- JarnoO May have erupted during early (0216-0225) nightly reset of the webcam. A lot of pre-eruptive spouting just before the interuption.
2935 01 Jun 2016 @ 2017 --- MikeG Forgot to write down eruption time. It might have been 20:17, and short duration.
315 22 Jun 2012 @ 0546 22 Jun 2012 @ 0552 Loisb I have OF starting at 0546 per the UB cam and it was a long. I also have Lion starting at 0552 which would make it an initial
111 17 Feb 2012 @ 1011 --- BB OF was 10:11 ie wc (time stamp UGB cam)
88 24 Jan 2012 @ 1250 --- ofcarolyn Park employees are downloading Old Faithful\'s temperature logger near 12:50 p.m. today.
727 19 Jan 2012 @ 1200 19 Jan 2012 @ 2359 WillBoekel Electronic temperature trace for the afternoon/evening has no spikes. Probably caused by an ice dam diverting the runoff.
1020 29 Sep 2008 @ 0000 29 Sep 2008 @ 2359 BoekelUpload
1010 09 Sep 2008 @ 1100 09 Sep 2008 @ 1109 BoekelUpload 11:0x 120 ft
970 20 Jun 2008 @ 0550 20 Jun 2008 @ 0559 BoekelUpload 5:5x
1365 27 Jul 2007 @ 0000 27 Jul 2007 @ 2359 BoekelUpload Old Faithful 90 minute long interval reimplemented.
1364 16 Jul 2007 @ 0000 16 Jul 2007 @ 2359 BoekelUpload Old Faithful long changed back to 92 minutes
1363 14 Jul 2007 @ 0000 14 Jul 2007 @ 2359 BoekelUpload Old Faithful prediction long interval changed to 90 minutes.
1362 11 Jun 2007 @ 0000 11 Jun 2007 @ 2359 BoekelUpload time missing
1361 22 May 2007 @ 0949 22 May 2007 @ 1301 BoekelUpload missing time [between 09:49 and 13:01 eruptions]
221 02 Feb 1972 @ 0000 02 Feb 1972 @ 2359 BoekelUpload extcold;fog
220 31 Jan 1972 @ 0000 --- BoekelUpload Fog <10
EntrySourceLinkComment
07 Aug 2018 @ 1711 JSJ https://www.flickr.com/photos/jsjgeology/45609961595 Photo (out of 3) of Old Faithful Geyser's 5:11 to 5:15 PM eruption on 7 August 2018.
27 Jul 2017 @ 1544 JSJ https://www.flickr.com/photos/jsjgeology/36496639821 Photo (1 of 2) of Old Faithful Geyser's 3:44 PM-onward eruption on 27 July 2017.
16 Jan 2017 @ 1255 ZubenElGenubi https://www.youtube.com/watch?v=juEHWs0fTjo YouTube @ 4x. Eruption closer to 12:55:30
18 Dec 2016 @ 1044 JSJ https://www.youtube.com/watch?v=xrfIZZxrvoI Webcam capture video of Old Faithful Geyser's 10:44 to 10:47 AM eruption on 18 December 2016.
10 Aug 2016 @ 1826 JSJ https://www.flickr.com/photos/jsjgeology/29791560694 Thermal image of Old Faithful Geyser's 6:26 PM-onward eruption on 10 August 2016.
10 Aug 2016 @ 1826 JSJ https://www.flickr.com/photos/jsjgeology/30336105571 Photo (1 of 10) of Old Faithful Geyser's 6:26 PM-onward eruption on 10 August 2016.
03 Jun 2016 @ 1139 JSJ https://www.flickr.com/photos/jsjgeology/28195935180 Photo (1 of 3) of Old Faithful Geyser's 11:39 AM eruption on 3 June 2016.
29 Jun 2016 @ 1434 Biddle https://imgur.com/gallery/2OyAk54 Late in eruption. Still screenshotting too slow.
27 Jun 2016 @ 1508 Biddle https://imgur.com/gallery/njPonFv Yet again, i need to screenshot faster. I am planning on doing this more often.
24 Apr 2016 @ 1847 JSJ https://www.youtube.com/watch?v=D8-zSGXWdf0 Video (via webcam) of the Old Faithful Geyser-Beehive Geyser dual eruption in the early evening of 24 April 2016.
09 Apr 2016 @ 1934 JSJ https://www.flickr.com/photos/jsjgeology/26336846585 Webcam screen capture photo (1 of 3) of Old Faithful Geyser's 7:34 to 7:38 PM eruption on 9 April 2016.
26 Mar 2016 @ 1915 ZubenElGenubi https://youtu.be/vGGyzWt9QZQ YouTube video showing eruption before webcam is swung away.
26 Mar 2016 @ 1254 JSJ https://www.youtube.com/watch?v=MvQH1ALv3No Video (via webcam) of Old Faithful Geyser's 12:54 to 12:59 PM eruption on 26 March 2016.
20 Mar 2016 @ 1141 JSJ https://www.youtube.com/watch?v=2LiBLge2frg Video (via webcam) of Old Faithful Geyser's 11:41 to 11:45 AM eruption on 20 March 2016.
18 Mar 2016 @ 1542 ZubenElGenubi https://youtu.be/dVluo98bzgc YouTube upload with clock sync
18 Mar 2016 @ 1046 JSJ https://www.flickr.com/photos/jsjgeology/25860369156 Video (via webcam) of Old Faithful Geyser's 10:46 to 10:50 AM eruption on 18 March 2016.
14 Mar 2016 @ 1658 JSJ https://www.youtube.com/watch?v=285OZNxyjtk Video (via webcam) of most of Old Faithful Geyser's short eruption from 4:58 to 5:01 PM on 14 March 2016.
04 Mar 2016 @ 1551 JSJ https://www.flickr.com/photos/jsjgeology/25392240742 Webcam screen capture photo (1 of 3) of the Old Faithful Geyser-Beehive Geyser concerted eruption in the afternoon of 4 March 2016.
13 Feb 2016 @ 1442 JSJ https://www.flickr.com/photos/jsjgeology/24761378690 Webcam screen capture photo (1 of 3) of Old Faithful Geyser's 2:42 to 2:46 PM eruption on 13 February 2016.
09 Feb 2016 @ 0846 JSJ https://www.flickr.com/photos/jsjgeology/24800481482 Webcam screen capture photo (1 or 2) of Old Faithful Geyser's 8:46 to 8:49 AM eruption on 9 February 2016.
Baseline does not exist.


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