Last Known Eruption
44m ago
Predicted Next Eruption
Today at 0928 ± 13 minutes

Latest Eruptions

EruptionDurationInterval
15 Dec 2017 @ 0751 wc1h 28m
15 Dec 2017 @ 0623 wc long1h 34m
15 Dec 2017 @ 0449 wc long1h 27m
15 Dec 2017 @ 0322 wc long1h 28m
15 Dec 2017 @ 0154 wc long1h 42m
15 Dec 2017 @ 0012 wc long1h 28m
14 Dec 2017 @ 2244 wc long1h 30m
14 Dec 2017 @ 2114 wc1h 23m
14 Dec 2017 @ 1951 wc1h 38m
14 Dec 2017 @ 1813 ns wc1h 40m
14 Dec 2017 @ 1633 wc long1h 30m
14 Dec 2017 @ 1503 wc long1h 37m
14 Dec 2017 @ 1326 wc long1h 34m
14 Dec 2017 @ 1152 wc long1h 37m
14 Dec 2017 @ 1015 wc long1h 22m
14 Dec 2017 @ 0853 wc long1h 46m
14 Dec 2017 @ 0707 wc long1h 21m
14 Dec 2017 @ 0546 wc1h 35m
14 Dec 2017 @ 0411 wc long1h 31m
14 Dec 2017 @ 0240 wc long1h 51m
14 Dec 2017 @ 0049 wc long1h 30m
13 Dec 2017 @ 2319 wc1h 32m
13 Dec 2017 @ 2147 wc1h 0m
13 Dec 2017 @ 2047 wc long1h 41m
13 Dec 2017 @ 1906 wc1h 30m
13 Dec 2017 @ 1736 wc long1h 39m
13 Dec 2017 @ 1557 wc1h 29m
13 Dec 2017 @ 1428 wc long1h 37m
13 Dec 2017 @ 1251 wc long1h 39m
13 Dec 2017 @ 1112 wc long1h 36m
13 Dec 2017 @ 0936 wc long1h 37m
13 Dec 2017 @ 0759 wc long1h 29m
13 Dec 2017 @ 0630 wc1h 33m
13 Dec 2017 @ 0457 wc long1h 12m
13 Dec 2017 @ 0345 wc short2h 8m
13 Dec 2017 @ 0137 wc long1h 5m
13 Dec 2017 @ 0032 wc short1h 36m
12 Dec 2017 @ 2256 wc long1h 37m
12 Dec 2017 @ 2119 wc long1h 28m
12 Dec 2017 @ 1951 wc long1h 37m
12 Dec 2017 @ 1814 wc long1h 39m
12 Dec 2017 @ 1635 wc long1h 32m
12 Dec 2017 @ 1503 wc long1h 42m
12 Dec 2017 @ 1321 wc long1h 37m
12 Dec 2017 @ 1144 wc long1h 38m
12 Dec 2017 @ 1006 wc long1h 33m
12 Dec 2017 @ 0833 wc long1h 30m
12 Dec 2017 @ 0703 wc long1h 33m
12 Dec 2017 @ 0530 wc long1h 35m
12 Dec 2017 @ 0355 wc long1h 39m
12 Dec 2017 @ 0216 wc long1h 37m
12 Dec 2017 @ 0039 wc long1h 30m
11 Dec 2017 @ 2309 wc long1h 34m
11 Dec 2017 @ 2135 wc long1h 33m
11 Dec 2017 @ 2002 wc long1h 42m
11 Dec 2017 @ 1820 wc long1h 9m
11 Dec 2017 @ 1711 wc short1h 54m
11 Dec 2017 @ 1517 wc long1h 31m
11 Dec 2017 @ 1346 wc long1h 25m
11 Dec 2017 @ 1221 wc long1h 31m
11 Dec 2017 @ 1050 wc long1h 36m
11 Dec 2017 @ 0914 wc long1h 24m
11 Dec 2017 @ 0750 wc long1h 37m
11 Dec 2017 @ 0613 wc long1h 31m
11 Dec 2017 @ 0442 wc long1h 38m
11 Dec 2017 @ 0304 wc long1h 27m
11 Dec 2017 @ 0137 wc long1h 41m
10 Dec 2017 @ 2356 wc long1h 32m
10 Dec 2017 @ 2224 wc long1h 44m
10 Dec 2017 @ 2040 wc long1h 38m
10 Dec 2017 @ 1902 wc long1h 32m
10 Dec 2017 @ 1730 wc long1h 37m
10 Dec 2017 @ 1553 wc long1h 32m
10 Dec 2017 @ 1421 wc long1h 38m
10 Dec 2017 @ 1243 wc long3m51s < d < 4m13s1h 33m
10 Dec 2017 @ 1110 wc long1h 33m
10 Dec 2017 @ 0937 wc1h 25m
10 Dec 2017 @ 0812 wc long1h 39m
10 Dec 2017 @ 0633 wc long1h 38m
10 Dec 2017 @ 0455 wc long4m 3s 1h 23m
10 Dec 2017 @ 0332 wc long1h 35m
10 Dec 2017 @ 0157 wc long1h 46m
10 Dec 2017 @ 0011 wc long1h 4m
09 Dec 2017 @ 2307 wc short1h 31m
09 Dec 2017 @ 2136 wc long1h 36m
09 Dec 2017 @ 1959:16 wc1h 28m
09 Dec 2017 @ 1831 wc long1h 30m
09 Dec 2017 @ 1701 wc1h 33m
09 Dec 2017 @ 1528 wc long1h 41m
09 Dec 2017 @ 1347 wc long1h 31m
09 Dec 2017 @ 1216 wc long1h 32m
09 Dec 2017 @ 1044 wc long1h 24m
09 Dec 2017 @ 0920 wc long1h 33m
09 Dec 2017 @ 0747 wc long1h 33m
09 Dec 2017 @ 0614 wc1h 40m
09 Dec 2017 @ 0434 wc long1h 26m
09 Dec 2017 @ 0308 wc long1h 43m
09 Dec 2017 @ 0125 wc long58m
09 Dec 2017 @ 0027 wc short1h 48m
08 Dec 2017 @ 2239 wc long1h 33m

Interval Statistics

Interval Count100
Min58m
Max2h 8m
Mean1h 32m
Median1h 33m

Latest Notes

Note IDStart TimeEnd TimeEntrantNote
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 --- Joethermop 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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