Last Known Eruption
48m ago
Predicted Next Eruption
Today at 1602 ± 13 minutes

Latest Eruptions

Eruption DurationInterval
17 Aug 2019 @ 1425 wc long1h 29m
17 Aug 2019 @ 1256 ns wc long1h 26m
17 Aug 2019 @ 1130 wc long1h 37m
17 Aug 2019 @ 0953 ns wc long1h 54m
17 Aug 2019 @ 0759 ie wc long1h 45m
17 Aug 2019 @ 0614 ns wc long1h 39m
17 Aug 2019 @ 0435 ie wc1h 46m
17 Aug 2019 @ 0249 ie wc3h 0m
16 Aug 2019 @ 2349 ie wc1h 30m
16 Aug 2019 @ 2219 ie wc1h 35m
16 Aug 2019 @ 2044 ie wc1h 28m
16 Aug 2019 @ 1916 wc long>3m 55s 1h 34m
16 Aug 2019 @ 1742 wc1h 45m
16 Aug 2019 @ 1557 ie wc long1h 37m
16 Aug 2019 @ 1420 ns wc long1h 38m
16 Aug 2019 @ 1242 ie wc long1h 41m
16 Aug 2019 @ 1101 ns wc long1h 41m
16 Aug 2019 @ 0920 ie wc1h 31m
16 Aug 2019 @ 0749 wc long1h 34m
16 Aug 2019 @ 0615 ie wc3h 4m
16 Aug 2019 @ 0311 ie wc5h 55m
15 Aug 2019 @ 2116 ns wc1h 33m
15 Aug 2019 @ 1943 wc long1h 42m
15 Aug 2019 @ 1801 long1h 26m
15 Aug 2019 @ 1635 ns wc1h 39m
15 Aug 2019 @ 1456 ie wc1h 24m
15 Aug 2019 @ 1332 ie wc long1h 37m
15 Aug 2019 @ 1155 ns wc long1h 44m
15 Aug 2019 @ 1011 ie wc long1h 32m
15 Aug 2019 @ 0839 wc long1h 38m
15 Aug 2019 @ 0701 ie wc long1h 24m
15 Aug 2019 @ 0537 wc long1h 40m
15 Aug 2019 @ 0357 ie wc4h 54m
14 Aug 2019 @ 2303 ie wc1h 38m
14 Aug 2019 @ 2125 ie wc long1h 26m
14 Aug 2019 @ 1959 ns wc1h 33m
14 Aug 2019 @ 1826 ns wc long1h 47m
14 Aug 2019 @ 1639 wc long1h 31m
14 Aug 2019 @ 1508 ns wc long1h 39m
14 Aug 2019 @ 1329 ns wc long1h 37m
14 Aug 2019 @ 1152 ns wc long1h 31m
14 Aug 2019 @ 1021 ie wc long1h 32m
14 Aug 2019 @ 0849 wc long~4m 2s 1h 36m
14 Aug 2019 @ 0713 wc long1h 28m
14 Aug 2019 @ 0545 ie wc1h 25m
14 Aug 2019 @ 0420 ie wc3h 5m
14 Aug 2019 @ 0115 ie wc1h 29m
13 Aug 2019 @ 2346 wc long1h 41m
13 Aug 2019 @ 2205 wc long1h 33m
13 Aug 2019 @ 2032 ns wc1h 27m
13 Aug 2019 @ 1905 wc long1h 33m
13 Aug 2019 @ 1732 ie wc1h 19m
13 Aug 2019 @ 1613 wc long1h 43m
13 Aug 2019 @ 1430 ns wc1h 35m
13 Aug 2019 @ 1255 wc long1h 37m
13 Aug 2019 @ 1118 wc long1h 30m
13 Aug 2019 @ 0948 wc long1h 34m
13 Aug 2019 @ 0814 wc long1h 29m
13 Aug 2019 @ 0645 ie wc6h 25m
13 Aug 2019 @ 0020 ie wc long1h 43m
12 Aug 2019 @ 2237 wc1h 46m
12 Aug 2019 @ 2051 ie wc1h 27m
12 Aug 2019 @ 1924 ns wc long1h 29m
12 Aug 2019 @ 1755 wc long1h 32m
12 Aug 2019 @ 1623 ie wc1h 33m
12 Aug 2019 @ 1450 ie wc long1h 47m
12 Aug 2019 @ 1303 wc long1h 31m
12 Aug 2019 @ 1132 A long1h 33m
12 Aug 2019 @ 0959 wc long1h 25m
12 Aug 2019 @ 0834 ns wc long1h 37m
12 Aug 2019 @ 0657 ie wc1h 26m
12 Aug 2019 @ 0531 ie wc1h 40m
12 Aug 2019 @ 0351 wc long3h 11m
12 Aug 2019 @ 0040 ie wc3h 13m
11 Aug 2019 @ 2127 ie wc1h 36m
11 Aug 2019 @ 1951 wc long1h 36m
11 Aug 2019 @ 1815 wc long1h 37m
11 Aug 2019 @ 1638 wc long1h 33m
11 Aug 2019 @ 1505 wc long1h 27m
11 Aug 2019 @ 13381h 50m
11 Aug 2019 @ 1148 ie wc long1h 22m
11 Aug 2019 @ 1026 wc long1h 44m
11 Aug 2019 @ 0842 wc long1h 32m
11 Aug 2019 @ 0710 wc1h 23m
11 Aug 2019 @ 0547 ie wc3h 7m
11 Aug 2019 @ 0240 wc1h 36m
11 Aug 2019 @ 0104 ie wc1h 32m
10 Aug 2019 @ 2332 wc long1h 32m
10 Aug 2019 @ 2200 wc long1h 31m
10 Aug 2019 @ 2029 ns wc long1h 32m
10 Aug 2019 @ 1857 ns wc long1h 29m
10 Aug 2019 @ 1728 ie wc long1h 30m
10 Aug 2019 @ 1558 wc long1h 39m
10 Aug 2019 @ 1419 wc long>3m 43s 1h 47m
10 Aug 2019 @ 1232 ns wc long1h 22m
10 Aug 2019 @ 1110 ns wc long1h 44m
10 Aug 2019 @ 0926 wc long1h 30m
10 Aug 2019 @ 0756 wc long1h 35m
10 Aug 2019 @ 0621 wc long1h 39m
10 Aug 2019 @ 0442 ie wc3h 8m

Interval Statistics

Interval Count100
Min1h 19m
Max6h 25m
Mean1h 48m
Median1h 35m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
11691 09 Jun 2019 @ 1755 --- JSJ Inclinometer reading: Old Faithful Geyser's eruption column reached about 111 feet high.
11689 09 Jun 2019 @ 1613 --- JSJ Inclinometer reading: Old Faithful's eruption column reached about 102 feet high.
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]
12782 21 Dec 1994 @ 0635 21 Dec 1994 @ 0917 JarnoO break
12781 21 Dec 1994 @ 0107 21 Dec 1994 @ 0635 JarnoO break
12775 23 Nov 1994 @ 0641 23 Nov 1994 @ 1230 JarnoO obscured
12774 23 Nov 1994 @ 0110 23 Nov 1994 @ 0440 JarnoO obscured
12772 20 Nov 1994 @ 1108 20 Nov 1994 @ 1333 JarnoO obscured
12771 11 Nov 1994 @ 0143 11 Nov 1994 @ 0401 JarnoO obscured
12748 04 Oct 1994 @ 2051 05 Oct 1994 @ 0048 JarnoO obscured
12743 23 Sep 1994 @ 0009 23 Sep 1994 @ 1943 JarnoO 15 consecutive longs
12625 15 Mar 1994 @ 1958 --- JarnoO Old Faithful ink cartridge ran out abruptly at 1958 on 3/15/1994. Naturalists did not check strip chart recorder for next 3 days while Research Geologist was in Pelican Valley.
12602 16 Feb 1994 @ 0003 --- JarnoO very heavy preplay: perhaps minor eruption; d=.6-1.0 min
12593 03 Feb 1994 @ 0326 03 Feb 1994 @ 0730 JarnoO obscured
12588 21 Jan 1994 @ 2332 22 Jan 1994 @ 0150 JarnoO obscured
221 02 Feb 1972 @ 0000 02 Feb 1972 @ 2359 BoekelUpload extcold;fog
220 31 Jan 1972 @ 0000 --- BoekelUpload Fog <10
EntrySourceLinkComment
08 Jun 2019 @ 1042 CraigC https://geysercam.xyz/ugb-ynp/06082019/344.jpg static webcam
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.
Baseline does not exist.


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