Last Known Eruption
1h 42m ago
Predicted Next Eruption
Today at 0210 ± 13 minutes

Latest Eruptions

EruptionDurationInterval
22 Oct 2017 @ 0033 wc long6h 25m
21 Oct 2017 @ 1808 wc long1h 16m
21 Oct 2017 @ 1651:14 wc short1m 41s 1h 41m
21 Oct 2017 @ 1510 wc long1h 0m
21 Oct 2017 @ 1410 wc short1h 35m
21 Oct 2017 @ 1235 wc long1h 28m
21 Oct 2017 @ 1107 wc long1h 41m
21 Oct 2017 @ 0926 wc long1h 42m
21 Oct 2017 @ 0744 wc long1h 33m
21 Oct 2017 @ 0611 wc long1h 10m
21 Oct 2017 @ 0501 wc short1h 28m
21 Oct 2017 @ 0333 wc long1h 35m
21 Oct 2017 @ 0158 wc long1h 42m
21 Oct 2017 @ 0016 wc long1h 40m
20 Oct 2017 @ 2236 wc long1h 5m
20 Oct 2017 @ 2131 wc short1h 39m
20 Oct 2017 @ 1952 wc long1h 10m
20 Oct 2017 @ 1842 wc1h 35m
20 Oct 2017 @ 1707 wc1h 59m
20 Oct 2017 @ 15081h 36m
20 Oct 2017 @ 1332 wc long1h 37m
20 Oct 2017 @ 1155 wc long3m 57s 1h 26m
20 Oct 2017 @ 1029 wc long4m 4s 1h 40m
20 Oct 2017 @ 0849 wc long1h 32m
20 Oct 2017 @ 0717 wc long4m 9s 1h 36m
20 Oct 2017 @ 0541 wc long1h 32m
20 Oct 2017 @ 0409 wc1h 38m
20 Oct 2017 @ 0230:06 wc1h 38m
20 Oct 2017 @ 0052 wc1h 37m
19 Oct 2017 @ 2314:59 wc1h 40m
19 Oct 2017 @ 2134 wc1h 29m
19 Oct 2017 @ 2005 wc1h 47m
19 Oct 2017 @ 1818 wc long4m 26s 1h 9m
19 Oct 2017 @ 1709 wc short1h 32m
19 Oct 2017 @ 1537 wc long1h 40m
19 Oct 2017 @ 1357 wc long1h 13m
19 Oct 2017 @ 1244 wc short1m 47s 1h 39m
19 Oct 2017 @ 1105 wc long1h 2m
19 Oct 2017 @ 1003 short1h 44m
19 Oct 2017 @ 0819 long1h 12m
19 Oct 2017 @ 0707 wc short1h 40m
19 Oct 2017 @ 0527 wc long3m28s < d < 4m00s1h 26m
19 Oct 2017 @ 0401 wc long1h 37m
19 Oct 2017 @ 0224 wc long1h 36m
19 Oct 2017 @ 0048 wc long1h 32m
18 Oct 2017 @ 2316 wc long1h 39m
18 Oct 2017 @ 2137 wc long1h 28m
18 Oct 2017 @ 2009 wc long1h 30m
18 Oct 2017 @ 1839 wc long1h 34m
18 Oct 2017 @ 1705 wc long4m 6s 1h 36m
18 Oct 2017 @ 1529 wc long1h 51m
18 Oct 2017 @ 1338 long1h 42m
18 Oct 2017 @ 1156 long1h 29m
18 Oct 2017 @ 1027 long1h 37m
18 Oct 2017 @ 0850 wc long4m 18s 1h 35m
18 Oct 2017 @ 0715 wc long>3m 40s 1h 45m
18 Oct 2017 @ 0530 wc long1h 33m
18 Oct 2017 @ 0357 wc long1h 24m
18 Oct 2017 @ 0233 wc long1h 41m
18 Oct 2017 @ 0052 wc long1h 22m
17 Oct 2017 @ 2330 wc short1h 28m
17 Oct 2017 @ 2202 wc long1h 38m
17 Oct 2017 @ 2024 wc1h 14m
17 Oct 2017 @ 1910 wc1h 40m
17 Oct 2017 @ 1730 wc long4m 31s 1h 15m
17 Oct 2017 @ 1615 wc short1h 36m
17 Oct 2017 @ 1439 long1h 39m
17 Oct 2017 @ 1300 wc long4m 11s 1h 32m
17 Oct 2017 @ 1128 long1h 27m
17 Oct 2017 @ 1001 wc long1h 35m
17 Oct 2017 @ 0826 wc long1h 26m
17 Oct 2017 @ 0700 wc long1h 38m
17 Oct 2017 @ 0522 wc1h 25m
17 Oct 2017 @ 0357 wc1h 41m
17 Oct 2017 @ 0216 wc1h 36m
17 Oct 2017 @ 0040 wc1h 5m
16 Oct 2017 @ 2335 wc short1h 51m
16 Oct 2017 @ 2144 wc1h 35m
16 Oct 2017 @ 2009 wc1h 46m
16 Oct 2017 @ 1823 wc long1h 29m
16 Oct 2017 @ 1654 wc long1h 34m
16 Oct 2017 @ 1520 wc long1h 40m
16 Oct 2017 @ 1340 wc long3m 54s 1h 32m
16 Oct 2017 @ 1208 wc long1h 26m
16 Oct 2017 @ 1042 wc long1h 38m
16 Oct 2017 @ 0904 wc long1h 35m
16 Oct 2017 @ 0729 wc long1h 29m
16 Oct 2017 @ 0600 wc2h 2m
16 Oct 2017 @ 0358 wc long58m
16 Oct 2017 @ 0300 wc1h 38m
16 Oct 2017 @ 0122 wc1h 26m
15 Oct 2017 @ 2356 wc long1h 30m
15 Oct 2017 @ 2226 wc1h 42m
15 Oct 2017 @ 2044 wc1h 29m
15 Oct 2017 @ 1915 wc1h 59m
15 Oct 2017 @ 1716 wc long1h 31m
15 Oct 2017 @ 1545 wc long4m 15s 1h 28m
15 Oct 2017 @ 1417 wc long1h 34m
15 Oct 2017 @ 1243 wc long1h 19m
15 Oct 2017 @ 1124 wc long1h 46m

Interval Statistics

Interval Count100
Min58m
Max6h 25m
Mean1h 35m
Median1h 35m

Latest Notes

Note IDStart TimeEnd TimeEntrantNote
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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