Last Known Eruption
24m ago
Predicted Next Eruption
Today at 0956 ± 13 minutes

Latest Eruptions

Eruption DurationInterval
21 Aug 2018 @ 0819 wc long1h 9m
21 Aug 2018 @ 0710 wc short1h 28m
21 Aug 2018 @ 0542 wc long1h 32m
21 Aug 2018 @ 0410 wc long1h 36m
21 Aug 2018 @ 0234 wc long1h 24m
21 Aug 2018 @ 0110 wc long1h 37m
20 Aug 2018 @ 2333 wc long1h 35m
20 Aug 2018 @ 2158 wc long1h 32m
20 Aug 2018 @ 2026 wc long1h 26m
20 Aug 2018 @ 1900 wc long1h 31m
20 Aug 2018 @ 1729 wc long1h 40m
20 Aug 2018 @ 1549 wc long1h 39m
20 Aug 2018 @ 1410 wc long~4m 7s 1h 29m
20 Aug 2018 @ 1241 wc long1h 34m
20 Aug 2018 @ 1107 wc long1h 37m
20 Aug 2018 @ 0930 wc long1h 35m
20 Aug 2018 @ 0755 wc long1h 34m
20 Aug 2018 @ 0621 wc long1h 30m
20 Aug 2018 @ 0451 wc long1h 40m
20 Aug 2018 @ 0311 wc long1h 33m
20 Aug 2018 @ 0138 wc long1h 31m
20 Aug 2018 @ 0007 wc long1h 28m
19 Aug 2018 @ 2239 wc long1h 40m
19 Aug 2018 @ 2059 wc long1h 31m
19 Aug 2018 @ 1928 wc long1h 41m
19 Aug 2018 @ 1747 wc long~4m 4s 1h 33m
19 Aug 2018 @ 1614 wc long3m 20s 1h 34m
19 Aug 2018 @ 1440 wc long~4m 1s 1h 23m
19 Aug 2018 @ 1317 wc long~4m 2s 1h 47m
19 Aug 2018 @ 1130 wc long1h 33m
19 Aug 2018 @ 0957 wc1h 29m
19 Aug 2018 @ 0828 wc long1h 25m
19 Aug 2018 @ 0703 wc long1h 39m
19 Aug 2018 @ 0524 wc long1h 6m
19 Aug 2018 @ 0418 wc short1h 33m
19 Aug 2018 @ 0245 wc long1h 30m
19 Aug 2018 @ 0115 wc long1h 39m
18 Aug 2018 @ 2336 wc long1h 22m
18 Aug 2018 @ 2214 wc long1h 29m
18 Aug 2018 @ 2045 wc long1h 27m
18 Aug 2018 @ 1918 wc long1h 27m
18 Aug 2018 @ 1751 wc long1h 33m
18 Aug 2018 @ 1618 wc long1h 43m
18 Aug 2018 @ 1435 wc long>4m 12s 1h 3m
18 Aug 2018 @ 1332 wc short~2m 9s 1h 35m
18 Aug 2018 @ 1157 wc long1h 27m
18 Aug 2018 @ 1030 wc long~4m 2s 1h 32m
18 Aug 2018 @ 0858 wc long1h 26m
18 Aug 2018 @ 0732 wc long1h 33m
18 Aug 2018 @ 0559 wc long1h 32m
18 Aug 2018 @ 0427 wc long1h 11m
18 Aug 2018 @ 0316 wc short1h 49m
18 Aug 2018 @ 0127 wc1h 29m
17 Aug 2018 @ 2358 wc1h 33m
17 Aug 2018 @ 2225 wc long1h 34m
17 Aug 2018 @ 2051 wc long1h 39m
17 Aug 2018 @ 1912 wc long1h 32m
17 Aug 2018 @ 1740 wc long1h 37m
17 Aug 2018 @ 1603 wc long~4m 4s 1h 29m
17 Aug 2018 @ 1434 wc long1h 38m
17 Aug 2018 @ 1256 wc long>4m 4s 1h 28m
17 Aug 2018 @ 1128 wc long1h 37m
17 Aug 2018 @ 0951 wc long3m34s < d < 4m20s1h 35m
17 Aug 2018 @ 0816 wc long1h 35m
17 Aug 2018 @ 0641 wc long1h 32m
17 Aug 2018 @ 0509 wc long1h 35m
17 Aug 2018 @ 0334 wc long1h 27m
17 Aug 2018 @ 0207 wc long1h 31m
17 Aug 2018 @ 0036 long1h 32m
16 Aug 2018 @ 2304 wc long1h 40m
16 Aug 2018 @ 2124 wc1h 31m
16 Aug 2018 @ 1953 wc long1h 35m
16 Aug 2018 @ 1818 wc long1h 32m
16 Aug 2018 @ 1646 wc long~4m 10s 1h 33m
16 Aug 2018 @ 1513 wc long~4m 2s 1h 31m
16 Aug 2018 @ 1342 wc long~4m 0s 1h 44m
16 Aug 2018 @ 1158 wc long1h 49m
16 Aug 2018 @ 1009 wc long~4m 6s 1h 27m
16 Aug 2018 @ 0842 wc long1h 35m
16 Aug 2018 @ 0707 wc long1h 37m
16 Aug 2018 @ 0530 wc long1h 40m
16 Aug 2018 @ 0350 wc long1h 34m
16 Aug 2018 @ 0216 wc long1h 38m
16 Aug 2018 @ 0038 wc long1h 37m
15 Aug 2018 @ 2301 wc long1h 26m
15 Aug 2018 @ 2135 wc long1h 32m
15 Aug 2018 @ 2003 wc long1h 33m
15 Aug 2018 @ 1830 wc long1h 27m
15 Aug 2018 @ 1703 wc long1h 34m
15 Aug 2018 @ 1529 wc long~4m 21s 1h 27m
15 Aug 2018 @ 1402 wc long1h 34m
15 Aug 2018 @ 1228 wc long1h 34m
15 Aug 2018 @ 1054 wc long1h 34m
15 Aug 2018 @ 0920 wc long1h 36m
15 Aug 2018 @ 0744 wc long~3m 55s 1h 34m
15 Aug 2018 @ 0610 wc long1h 32m
15 Aug 2018 @ 0438 wc long1h 41m
15 Aug 2018 @ 0257 wc long1h 18m
15 Aug 2018 @ 0139 wc short1h 42m
14 Aug 2018 @ 2357 wc long1h 30m

Interval Statistics

Interval Count100
Min1h 3m
Max1h 49m
Mean1h 32m
Median1h 33m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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.
9336 30 Jul 2018 @ 2043 --- STS I’m not sure if it erupted or not; I don’t see many people waiting.
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.


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