Last Known Eruption
1h 29m ago
Predicted Next Eruption
Today at 0144 ± 13 minutes

Latest Eruptions

Eruption DurationInterval
14 Dec 2018 @ 0007 wc long1h 51m
13 Dec 2018 @ 2216 wc long1h 29m
13 Dec 2018 @ 2047 wc long1h 19m
13 Dec 2018 @ 1928 wc short1h 39m
13 Dec 2018 @ 1749 wc long1h 3m
13 Dec 2018 @ 1646 wc short1h 39m
13 Dec 2018 @ 1507 wc long1h 26m
13 Dec 2018 @ 1341 wc long1h 43m
13 Dec 2018 @ 1158 wc long1h 25m
13 Dec 2018 @ 1033 wc long1h 29m
13 Dec 2018 @ 0904 wc long1h 31m
13 Dec 2018 @ 0733 wc long1h 36m
13 Dec 2018 @ 0557 wc long1h 32m
13 Dec 2018 @ 0425 wc long1h 36m
13 Dec 2018 @ 0249 wc long1h 29m
13 Dec 2018 @ 0120 wc long1h 38m
12 Dec 2018 @ 2342 wc long1h 34m
12 Dec 2018 @ 2208 wc long1h 31m
12 Dec 2018 @ 2037 wc long1h 30m
12 Dec 2018 @ 1907 wc long1h 24m
12 Dec 2018 @ 1743 wc long1h 36m
12 Dec 2018 @ 1607 wc long1h 27m
12 Dec 2018 @ 1440 wc long1h 37m
12 Dec 2018 @ 1303 wc long1h 34m
12 Dec 2018 @ 1129 wc1h 36m
12 Dec 2018 @ 0953 wc long1h 28m
12 Dec 2018 @ 0825 wc long1h 46m
12 Dec 2018 @ 0639 wc long1h 37m
12 Dec 2018 @ 0502 wc long1h 42m
12 Dec 2018 @ 0320 wc long1h 41m
12 Dec 2018 @ 0139 wc long1h 36m
12 Dec 2018 @ 0003 wc long1h 33m
11 Dec 2018 @ 2230 wc long1h 34m
11 Dec 2018 @ 2056 wc long1h 29m
11 Dec 2018 @ 1927 wc long1h 36m
11 Dec 2018 @ 1751 wc long1h 30m
11 Dec 2018 @ 1621 wc long1h 36m
11 Dec 2018 @ 1445 wc long1h 29m
11 Dec 2018 @ 1316 wc long1h 34m
11 Dec 2018 @ 1142 wc1h 39m
11 Dec 2018 @ 1003 wc long1h 27m
11 Dec 2018 @ 0836 wc long1h 42m
11 Dec 2018 @ 0654 wc long1h 30m
11 Dec 2018 @ 0524 wc long1h 37m
11 Dec 2018 @ 0347 wc long1h 27m
11 Dec 2018 @ 0220 wc long1h 31m
11 Dec 2018 @ 0049 wc long1h 42m
10 Dec 2018 @ 2307 wc long1h 30m
10 Dec 2018 @ 2137 wc long1h 46m
10 Dec 2018 @ 1951 wc long1h 31m
10 Dec 2018 @ 1820 wc long1h 32m
10 Dec 2018 @ 1648 wc long1h 35m
10 Dec 2018 @ 1513 wc long1h 32m
10 Dec 2018 @ 1341 wc long1h 46m
10 Dec 2018 @ 1155 wc long1h 34m
10 Dec 2018 @ 1021 wc long1h 35m
10 Dec 2018 @ 0846 wc long1h 30m
10 Dec 2018 @ 0716 wc long1h 33m
10 Dec 2018 @ 0543 wc long1h 28m
10 Dec 2018 @ 0415 wc long1h 30m
10 Dec 2018 @ 0245 wc long1h 32m
10 Dec 2018 @ 0113 wc long1h 31m
09 Dec 2018 @ 2342 wc long1h 35m
09 Dec 2018 @ 2207 wc long1h 33m
09 Dec 2018 @ 2034 wc long1h 26m
09 Dec 2018 @ 1908 wc long1h 42m
09 Dec 2018 @ 1726 wc long1h 35m
09 Dec 2018 @ 1551 wc long1h 34m
09 Dec 2018 @ 1417 wc long1h 39m
09 Dec 2018 @ 1238 wc long1h 23m
09 Dec 2018 @ 1115 wc long1h 33m
09 Dec 2018 @ 0942 wc long1h 37m
09 Dec 2018 @ 0805 ie long1h 28m
09 Dec 2018 @ 0637 wc long1h 25m
09 Dec 2018 @ 0512 wc long1h 43m
09 Dec 2018 @ 0329 wc long1h 29m
09 Dec 2018 @ 0200 wc long1h 14m
09 Dec 2018 @ 0046 wc short1h 27m
08 Dec 2018 @ 2319 wc long1h 37m
08 Dec 2018 @ 2142 wc long1h 32m
08 Dec 2018 @ 2010 wc long1h 32m
08 Dec 2018 @ 1838 wc long1h 31m
08 Dec 2018 @ 1707 wc long~3m 55s 1h 28m
08 Dec 2018 @ 1539 wc long1h 42m
08 Dec 2018 @ 1357 wc long~3m 58s 1h 30m
08 Dec 2018 @ 1227 wc long1h 32m
08 Dec 2018 @ 1055 wc long1h 38m
08 Dec 2018 @ 0917 wc long1h 29m
08 Dec 2018 @ 0748 wc long~3m 55s 1h 40m
08 Dec 2018 @ 0608 wc long1h 45m
08 Dec 2018 @ 0423 wc long1h 21m
08 Dec 2018 @ 0302 wc1h 45m
08 Dec 2018 @ 0117 wc long1h 27m
07 Dec 2018 @ 2350 wc long1h 38m
07 Dec 2018 @ 2212 wc long1h 36m
07 Dec 2018 @ 2036 wc long1h 25m
07 Dec 2018 @ 1911 wc long1h 45m
07 Dec 2018 @ 1726 wc long1h 36m
07 Dec 2018 @ 1550 wc long~4m 4s 1h 25m
07 Dec 2018 @ 1425 wc long<3m57s1h 38m

Interval Statistics

Interval Count100
Min1h 3m
Max1h 51m
Mean1h 33m
Median1h 33m

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 --- DGInc 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 --- DGInc ~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 --- DGInc 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 --- DGInc Appears to be post-eruptive. Runoff channels steamy. Temperature as of writing 23°F.
7798 30 Oct 2017 @ 1017 30 Oct 2017 @ 1018 DGInc 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 --- DGInc ~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 --- DGInc Was pre-eruptive spouting. Likely went before 0530.
3270 09 Jul 2016 @ 0246 --- DGInc 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 --- DGInc 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
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,
07 Feb 2016 @ 1142 JSJ https://www.flickr.com/photos/jsjgeology/24511711269 Webcam screen capture photo (1 of 3) of Old Faithful Geyser's 11:42 to 11:46 AM eruption on 7 February 2016.
Baseline does not exist.


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