Last Known Eruption
2h 41m ago

Latest Eruptions

Eruption DurationInterval
20 Sep 2019 @ 1815 wc1h 29m
20 Sep 2019 @ 1646 wc long~4m 2s 1h 51m
20 Sep 2019 @ 1455 ns wc long1h 33m
20 Sep 2019 @ 1322 wc long~4m 11s 1h 46m
20 Sep 2019 @ 1136 wc long~4m 5s 1h 35m
20 Sep 2019 @ 10013m 12s 1h 34m
20 Sep 2019 @ 0827 long1h 19m
20 Sep 2019 @ 0708 wc long1h 36m
20 Sep 2019 @ 0532 wc long1h 39m
20 Sep 2019 @ 0353 wc long4h 26m
19 Sep 2019 @ 2327 wc long1h 51m
19 Sep 2019 @ 2136 wc long3h 16m
19 Sep 2019 @ 1820 wc long3h 4m
19 Sep 2019 @ 1516 wc long1h 35m
19 Sep 2019 @ 1341 wc1h 44m
19 Sep 2019 @ 1157 ie wc long1h 25m
19 Sep 2019 @ 1032 wc long~3m 45s 1h 36m
19 Sep 2019 @ 0856 wc long1h 27m
19 Sep 2019 @ 0729 long3m 31s 1h 45m
19 Sep 2019 @ 0544 wc long1h 30m
19 Sep 2019 @ 0414 wc long8h 6m
18 Sep 2019 @ 2008 long1h 31m
18 Sep 2019 @ 1837 wc long1h 38m
18 Sep 2019 @ 1659 wc long1h 24m
18 Sep 2019 @ 1535 ie wc1h 34m
18 Sep 2019 @ 1401 ns wc1h 36m
18 Sep 2019 @ 1225 A1h 35m
18 Sep 2019 @ 1050 A1h 39m
18 Sep 2019 @ 0911 ns wc1h 29m
18 Sep 2019 @ 0742 ns wc14h 6m
17 Sep 2019 @ 1736 ns wc1h 41m
17 Sep 2019 @ 1555 ns wc1h 30m
17 Sep 2019 @ 1425 ie wc1h 22m
17 Sep 2019 @ 1303 ie wc1h 41m
17 Sep 2019 @ 11225m 1h 40m
17 Sep 2019 @ 0942 ie wc1h 20m
17 Sep 2019 @ 0822 ns wc1h 42m
17 Sep 2019 @ 0640 A9h 27m
16 Sep 2019 @ 2113 ns1h 35m
16 Sep 2019 @ 1938 ie wc1h 33m
16 Sep 2019 @ 1805 ie wc1h 48m
16 Sep 2019 @ 1617 ns wc long1h 34m
16 Sep 2019 @ 1443 wc long1h 46m
16 Sep 2019 @ 1257 wc long1h 36m
16 Sep 2019 @ 1121 wc long1h 34m
16 Sep 2019 @ 0947 wc long1h 31m
16 Sep 2019 @ 0816 wc long1h 37m
16 Sep 2019 @ 0639 ie wc10h 52m
15 Sep 2019 @ 1947 ns wc1h 31m
15 Sep 2019 @ 1816 ie wc long1h 27m
15 Sep 2019 @ 1649 ie wc long1h 34m
15 Sep 2019 @ 1515 ns wc long1h 26m
15 Sep 2019 @ 1349 wc long1h 32m
15 Sep 2019 @ 1217 wc long1h 33m
15 Sep 2019 @ 1044 ie wc1h 37m
15 Sep 2019 @ 0907 wc long1h 24m
15 Sep 2019 @ 0743 ns wc12h 28m
14 Sep 2019 @ 1915 wc long1h 26m
14 Sep 2019 @ 1749 ns wc long1h 28m
14 Sep 2019 @ 1621 ns wc long1h 33m
14 Sep 2019 @ 1448 wc long1h 30m
14 Sep 2019 @ 1318 ie wc long1h 35m
14 Sep 2019 @ 1143 long3m 28s 3h 14m
14 Sep 2019 @ 0829 ie wc long1h 35m
14 Sep 2019 @ 0654 ns wc long3h 12m
14 Sep 2019 @ 0342 ie long1h 29m
14 Sep 2019 @ 0213 ie long4h 49m
13 Sep 2019 @ 2124 ie2h 57m
13 Sep 2019 @ 1827 wc1h 39m
13 Sep 2019 @ 1648 ie wc long1h 32m
13 Sep 2019 @ 1516 ns wc long1h 49m
13 Sep 2019 @ 1327 long1h 31m
13 Sep 2019 @ 1156 ns wc long1h 32m
13 Sep 2019 @ 1024 ns wc long1h 36m
13 Sep 2019 @ 0848 ie wc long13h 47m
12 Sep 2019 @ 1901 wc1h 35m
12 Sep 2019 @ 1726 ns wc1h 30m
12 Sep 2019 @ 1556 ie wc1h 32m
12 Sep 2019 @ 1424 wc long1h 27m
12 Sep 2019 @ 1257 long1h 31m
12 Sep 2019 @ 1126 ie wc long1h 31m
12 Sep 2019 @ 0955 long1h 36m
12 Sep 2019 @ 0819 long1h 29m
12 Sep 2019 @ 0650 wc long11h 6m
11 Sep 2019 @ 1944 wc long1h 37m
11 Sep 2019 @ 1807 wc long1h 36m
11 Sep 2019 @ 1631 ns wc1h 34m
11 Sep 2019 @ 1457 ie wc long1h 28m
11 Sep 2019 @ 1329 wc long1h 37m
11 Sep 2019 @ 1152 ie wc long1h 35m
11 Sep 2019 @ 1017 ie wc1h 27m
11 Sep 2019 @ 0850 ie wc1h 35m
11 Sep 2019 @ 0715 long1h 24m
11 Sep 2019 @ 0551 ie wc11h 2m
10 Sep 2019 @ 1849 ie wc long1h 24m
10 Sep 2019 @ 1725 ie wc1h 43m
10 Sep 2019 @ 1542 ie wc long1h 30m
10 Sep 2019 @ 1412 ie wc long3h 6m
10 Sep 2019 @ 1106 ns wc long1h 41m
10 Sep 2019 @ 0925 ie wc1h 20m

Interval Statistics

Interval Count100
Min1h 19m
Max14h 6m
Mean2h 30m
Median1h 35m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
13767 20 Sep 2019 @ 1459 --- Polly VEC measured a height of 161’ on this eruption.
13766 20 Sep 2019 @ 1326 --- Polly VEC reported a height of 165’ on this OF.
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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