Last Known Eruption
2h 8m ago

Latest Eruptions

Eruption DurationInterval
16 Jul 2018 @ 1923 wc long1h 34m
16 Jul 2018 @ 1749 wc long1h 19m
16 Jul 2018 @ 1630 wc long~3m 53s 1h 32m
16 Jul 2018 @ 1458 wc long1h 26m
16 Jul 2018 @ 1332 wc long~4m 13s 1h 27m
16 Jul 2018 @ 1205 wc long1h 43m
16 Jul 2018 @ 1022 wc long1h 6m
16 Jul 2018 @ 0916 wc short1h 30m
16 Jul 2018 @ 0746 wc long1h 40m
16 Jul 2018 @ 0606 wc long1h 29m
16 Jul 2018 @ 0437 wc long1h 44m
16 Jul 2018 @ 0253 wc long1h 27m
16 Jul 2018 @ 0126 wc long1h 49m
15 Jul 2018 @ 2337 wc long1h 30m
15 Jul 2018 @ 2207 wc long1h 29m
15 Jul 2018 @ 2038 wc long1h 38m
15 Jul 2018 @ 1900 wc1h 28m
15 Jul 2018 @ 1732 wc long1h 39m
15 Jul 2018 @ 1553 wc long~4m 34s 1h 12m
15 Jul 2018 @ 1441 wc short1h 36m
15 Jul 2018 @ 1305 wc long1h 22m
15 Jul 2018 @ 1143 wc long1h 31m
15 Jul 2018 @ 1012 wc long1h 33m
15 Jul 2018 @ 0839 wc long1h 38m
15 Jul 2018 @ 0701 wc long1h 25m
15 Jul 2018 @ 0536 wc long~4m 1s 1h 37m
15 Jul 2018 @ 0359 wc long1h 39m
15 Jul 2018 @ 0220 wc long1h 29m
15 Jul 2018 @ 0051 wc long1h 26m
14 Jul 2018 @ 2325 wc long1h 36m
14 Jul 2018 @ 2149 wc long1h 34m
14 Jul 2018 @ 2015 wc long1h 42m
14 Jul 2018 @ 1833 wc long1h 27m
14 Jul 2018 @ 1706 wc long~3m 57s 1h 32m
14 Jul 2018 @ 1534 wc long~3m 56s 1h 45m
14 Jul 2018 @ 1349 wc long~3m 59s 1h 33m
14 Jul 2018 @ 1216 wc long~3m 59s 1h 32m
14 Jul 2018 @ 1044 ns wc long1h 28m
14 Jul 2018 @ 0916 ie wc long1h 38m
14 Jul 2018 @ 0738 wc long1h 38m
14 Jul 2018 @ 0600 wc long1h 27m
14 Jul 2018 @ 0433 wc long1h 35m
14 Jul 2018 @ 0258 wc long1h 27m
14 Jul 2018 @ 0131 wc long1h 35m
13 Jul 2018 @ 2356 wc long1h 41m
13 Jul 2018 @ 2215 wc long1h 29m
13 Jul 2018 @ 2046 wc long1h 36m
13 Jul 2018 @ 1910 wc long1h 33m
13 Jul 2018 @ 1737 wc long~4m 12s 1h 42m
13 Jul 2018 @ 1555 wc long~4m 17s 1h 38m
13 Jul 2018 @ 1417 wc long1h 35m
13 Jul 2018 @ 1242 wc long~4m 0s 1h 28m
13 Jul 2018 @ 1114 wc long1h 32m
13 Jul 2018 @ 0942 wc long~3m 50s 1h 36m
13 Jul 2018 @ 0806 wc long~4m 6s 1h 38m
13 Jul 2018 @ 0628 wc long1h 30m
13 Jul 2018 @ 0458 wc long1h 35m
13 Jul 2018 @ 0323 wc long1h 23m
13 Jul 2018 @ 0200 wc1h 46m
13 Jul 2018 @ 0014 wc long1h 15m
12 Jul 2018 @ 2259 wc long1h 53m
12 Jul 2018 @ 2106 wc long1h 32m
12 Jul 2018 @ 1934 wc long1h 37m
12 Jul 2018 @ 1757 wc long1h 32m
12 Jul 2018 @ 1625 wc long~3m 48s 1h 44m
12 Jul 2018 @ 1441 wc long~3m 53s 1h 31m
12 Jul 2018 @ 1310 wc long3m47s < d < 4m02s1h 39m
12 Jul 2018 @ 1131 wc long~4m 18s 1h 26m
12 Jul 2018 @ 1005 wc long1h 39m
12 Jul 2018 @ 0826 wc long<4m22s1h 31m
12 Jul 2018 @ 0655 wc long1h 31m
12 Jul 2018 @ 0524 wc long1h 43m
12 Jul 2018 @ 0341 wc long1h 37m
12 Jul 2018 @ 0204 wc long1h 32m
12 Jul 2018 @ 0032 wc long1h 36m
11 Jul 2018 @ 2256 wc long1h 26m
11 Jul 2018 @ 2130 wc long1h 30m
11 Jul 2018 @ 2000 wc long1h 31m
11 Jul 2018 @ 1829 wc long~3m 43s 1h 44m
11 Jul 2018 @ 1645 wc long~4m 26s 1h 21m
11 Jul 2018 @ 1524 wc long~3m 45s 1h 37m
11 Jul 2018 @ 1347 wc long~4m 14s 1h 31m
11 Jul 2018 @ 1216 wc long~4m 6s 1h 39m
11 Jul 2018 @ 1037 wc long~3m 54s 1h 36m
11 Jul 2018 @ 0901 wc long~4m 5s 1h 30m
11 Jul 2018 @ 0731 wc long~4m 5s 1h 43m
11 Jul 2018 @ 0548 wc long1h 35m
11 Jul 2018 @ 0413 wc long1h 26m
11 Jul 2018 @ 0247 wc long1h 39m
11 Jul 2018 @ 0108 wc long1h 22m
10 Jul 2018 @ 2346 wc long1h 54m
10 Jul 2018 @ 2152 wc long1h 37m
10 Jul 2018 @ 2015 wc long1h 32m
10 Jul 2018 @ 1843 wc long1h 32m
10 Jul 2018 @ 1711 wc long~3m 59s 1h 34m
10 Jul 2018 @ 1537 wc long1h 32m
10 Jul 2018 @ 1405 long1h 34m
10 Jul 2018 @ 1231 long1h 35m
10 Jul 2018 @ 1056 long1h 29m
10 Jul 2018 @ 0927 wc long~4m 0s 1h 35m

Interval Statistics

Interval Count100
Min1h 6m
Max1h 54m
Mean1h 33m
Median1h 33m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
9225 16 Jul 2018 @ 2100 --- STS Saw people leaving the area starting at 20:56 so an eruption probably between 20:50 - 20:55
9145 11 Jul 2018 @ 2154 --- STS Given the 3 hour interval between 18:29 and 21:30, it’s safe to assume there was an eruption sometime around 20:00.
9087 09 Jul 2018 @ 2014 --- STS NPS lists new prediction of 9:02 ± 10 minutes at about 7:35. OF probably erupted sometime around then.
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.
7814 03 Nov 2017 @ 1621 03 Nov 2017 @ 1622 DGInc Big preplay that would've started an eruption - didn't start
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.
2875 22 May 2016 @ 0205 --- DaveM Old Faithful erupted. Too bad that person watching it didn't report the time so we would have a reliable observation.
2870 21 May 2016 @ 2248 --- DaveM Old Faithful erupted. But since "eyes in the basin are most often more reliable than eyes through the webcam" I hope someone in the basin saw the eruption.
2643 02 Jan 2016 @ 0629 --- JoeN OF really fogged the area could not see eruption 0610-0615?
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.


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 2011-2018

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.