Last Known Eruption
34m ago
Predicted Next Eruption
Today at 0636 ± 13 minutes

Latest Eruptions

Eruption DurationInterval
25 Mar 2019 @ 0459 wc long1h 43m
25 Mar 2019 @ 0316 wc long1h 24m
25 Mar 2019 @ 0152 wc long1h 37m
25 Mar 2019 @ 0015 wc long1h 37m
24 Mar 2019 @ 2238 wc long1h 30m
24 Mar 2019 @ 2108 wc long1h 21m
24 Mar 2019 @ 1947 wc long1h 45m
24 Mar 2019 @ 1802 wc1h 26m
24 Mar 2019 @ 1636 wc1h 37m
24 Mar 2019 @ 1459 wc long1h 41m
24 Mar 2019 @ 1318 wc long1h 27m
24 Mar 2019 @ 1151 wc long~4m 21s 1h 30m
24 Mar 2019 @ 1021 wc long1h 45m
24 Mar 2019 @ 0836 wc1h 30m
24 Mar 2019 @ 0706 wc long1h 50m
24 Mar 2019 @ 0516 wc long1h 31m
24 Mar 2019 @ 0345 wc long1h 35m
24 Mar 2019 @ 0210 wc long1h 44m
24 Mar 2019 @ 0026 wc long1h 17m
23 Mar 2019 @ 2309 wc long1h 44m
23 Mar 2019 @ 2125 wc long1h 32m
23 Mar 2019 @ 1953 wc long1h 36m
23 Mar 2019 @ 1817 wc long1h 39m
23 Mar 2019 @ 1638 ns wc long1h 28m
23 Mar 2019 @ 1510 wc long1h 34m
23 Mar 2019 @ 1336 wc long~3m 43s 1h 35m
23 Mar 2019 @ 1201 wc1h 36m
23 Mar 2019 @ 1025 wc long1h 30m
23 Mar 2019 @ 0855 wc long1h 50m
23 Mar 2019 @ 0705 wc long1h 27m
23 Mar 2019 @ 0538 wc long1h 43m
23 Mar 2019 @ 0355 wc long1h 30m
23 Mar 2019 @ 0225 wc long1h 29m
23 Mar 2019 @ 0056 wc long1h 31m
22 Mar 2019 @ 2325 wc long1h 38m
22 Mar 2019 @ 2147 wc long1h 38m
22 Mar 2019 @ 2009 wc long1h 38m
22 Mar 2019 @ 1831 wc long~4m 11s 1h 37m
22 Mar 2019 @ 1654 wc long~4m 1s 1h 37m
22 Mar 2019 @ 1517 ns wc long1h 37m
22 Mar 2019 @ 1340 ns wc long1h 29m
22 Mar 2019 @ 1211 ie wc long1h 44m
22 Mar 2019 @ 1027 ns wc long1h 34m
22 Mar 2019 @ 0853 wc long1h 35m
22 Mar 2019 @ 0718 wc long1h 41m
22 Mar 2019 @ 0537 wc long1h 27m
22 Mar 2019 @ 0410 wc long1h 41m
22 Mar 2019 @ 0229 wc long1h 30m
22 Mar 2019 @ 0059 wc long1h 49m
21 Mar 2019 @ 2310 wc long1h 31m
21 Mar 2019 @ 2139 wc long1h 29m
21 Mar 2019 @ 2010 wc1h 37m
21 Mar 2019 @ 1833 wc long1h 33m
21 Mar 2019 @ 1700 wc long1h 34m
21 Mar 2019 @ 1526 wc long1h 32m
21 Mar 2019 @ 1354 wc long1h 28m
21 Mar 2019 @ 1226 wc long1h 30m
21 Mar 2019 @ 1056 wc long1h 36m
21 Mar 2019 @ 0920 wc long1h 28m
21 Mar 2019 @ 0752 wc1h 34m
21 Mar 2019 @ 0618 wc long1h 30m
21 Mar 2019 @ 0448 wc long1h 34m
21 Mar 2019 @ 0314 wc long1h 29m
21 Mar 2019 @ 0145 wc long46m
21 Mar 2019 @ 0059 wc long49m
21 Mar 2019 @ 0010 wc long1h 33m
20 Mar 2019 @ 2237 wc long1h 34m
20 Mar 2019 @ 2103 wc long1h 37m
20 Mar 2019 @ 1926 wc long1h 34m
20 Mar 2019 @ 1752 wc long1h 27m
20 Mar 2019 @ 1625 wc long1h 32m
20 Mar 2019 @ 1453 wc1h 35m
20 Mar 2019 @ 1318 wc long1h 28m
20 Mar 2019 @ 1150 wc long1h 38m
20 Mar 2019 @ 1012 wc long1h 35m
20 Mar 2019 @ 0837 ie wc long1h 27m
20 Mar 2019 @ 0710 wc long1h 35m
20 Mar 2019 @ 0535 ns wc long1h 34m
20 Mar 2019 @ 0401 wc long1h 37m
20 Mar 2019 @ 0224 wc long3h 1m
19 Mar 2019 @ 2323 wc long1h 39m
19 Mar 2019 @ 2144 wc long1h 35m
19 Mar 2019 @ 2009 wc long1h 46m
19 Mar 2019 @ 1823 wc long1h 22m
19 Mar 2019 @ 1701 wc long1h 44m
19 Mar 2019 @ 1517 wc long1h 39m
19 Mar 2019 @ 1338 wc long1h 47m
19 Mar 2019 @ 1151 wc long1h 30m
19 Mar 2019 @ 1021 wc long1h 35m
19 Mar 2019 @ 0846 wc long1h 46m
19 Mar 2019 @ 0700 wc long1h 42m
19 Mar 2019 @ 0518 wc long1h 36m
19 Mar 2019 @ 0342 wc long1h 36m
19 Mar 2019 @ 0206 wc long1h 40m
19 Mar 2019 @ 0026 wc long1h 42m
18 Mar 2019 @ 2244 wc long1h 32m
18 Mar 2019 @ 2112 wc1h 38m
18 Mar 2019 @ 1934 wc long1h 36m
18 Mar 2019 @ 1758 wc long1h 26m
18 Mar 2019 @ 1632 ns wc long1h 33m

Interval Statistics

Interval Count100
Min46m
Max3h 1m
Mean1h 34m
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.


All data is shown in US/Mountain timezone unless specified otherwise.

GeyserTimes.org is not affiliated with the National Park Service, but it is "for the benefit and enjoyment of the people".

If you have any questions or comments please contact: webmaster@geysertimes.org

Support open geyser data: Patreon Page

© Copyright 2011-2019

Facebook Page Telegram Channel Google+ Page Get it on Google Play Download on the App Store

Google Play and the Google Play logo are trademarks of Google LLC.

Apple and the Apple logo are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc., registered in the U.S. and other countries.