Last Known Eruption
53m ago
Predicted Next Eruption
Today at 0842 ± 13 minutes

Latest Eruptions

EruptionDurationInterval
23 Aug 2017 @ 0705 long9h 40m
22 Aug 2017 @ 2125 wc1h 43m
22 Aug 2017 @ 1942 wc long1h 16m
22 Aug 2017 @ 1826 wc short1h 29m
22 Aug 2017 @ 1657 wc long1h 35m
22 Aug 2017 @ 1522 wc long1h 33m
22 Aug 2017 @ 1349 wc long1h 37m
22 Aug 2017 @ 1212 wc long1h 35m
22 Aug 2017 @ 1037 wc long1h 22m
22 Aug 2017 @ 0915 wc short1h 28m
22 Aug 2017 @ 0747 wc long1h 34m
22 Aug 2017 @ 0613 wc long1h 22m
22 Aug 2017 @ 0451 wc1h 44m
22 Aug 2017 @ 0307 wc1h 5m
22 Aug 2017 @ 0202 wc short1h 34m
22 Aug 2017 @ 0028 wc1h 37m
21 Aug 2017 @ 2251 wc1h 37m
21 Aug 2017 @ 2114 wc long1h 34m
21 Aug 2017 @ 1940 wc long1h 35m
21 Aug 2017 @ 1805 wc long1h 36m
21 Aug 2017 @ 1629 wc1h 49m
21 Aug 2017 @ 1440 wc long~3m 29s 1h 0m
21 Aug 2017 @ 1340 wc short1h 39m
21 Aug 2017 @ 1201 ie wc long1h 36m
21 Aug 2017 @ 1025 wc long1h 35m
21 Aug 2017 @ 0850 wc long~4m 15s 1h 40m
21 Aug 2017 @ 0710 wc long~3m 49s 1h 43m
21 Aug 2017 @ 0527 wc1h 29m
21 Aug 2017 @ 0358 wc1h 38m
21 Aug 2017 @ 0220 wc1h 35m
21 Aug 2017 @ 0045 wc long1h 31m
20 Aug 2017 @ 2314 wc long1h 43m
20 Aug 2017 @ 2131 wc long1h 32m
20 Aug 2017 @ 1959 wc long1h 46m
20 Aug 2017 @ 1813 wc long1h 30m
20 Aug 2017 @ 1643 wc long1h 30m
20 Aug 2017 @ 1513 long1h 11m
20 Aug 2017 @ 1402 short1h 33m
20 Aug 2017 @ 1229 long1h 38m
20 Aug 2017 @ 1051 long1h 27m
20 Aug 2017 @ 0924 wc long1h 41m
20 Aug 2017 @ 0743 wc long1h 47m
20 Aug 2017 @ 0556 wc1h 35m
20 Aug 2017 @ 0421 wc1h 47m
20 Aug 2017 @ 0234 wc1h 35m
20 Aug 2017 @ 0059 wc1h 34m
19 Aug 2017 @ 2325 long1h 41m
19 Aug 2017 @ 2144 long1h 26m
19 Aug 2017 @ 2018 wc long1h 45m
19 Aug 2017 @ 1833 wc long1h 45m
19 Aug 2017 @ 1648 long1h 48m
19 Aug 2017 @ 1500 wc long1h 10m
19 Aug 2017 @ 1350 wc short1h 37m
19 Aug 2017 @ 1213 long1h 41m
19 Aug 2017 @ 1032 wc long1h 39m
19 Aug 2017 @ 0853 wc long1h 31m
19 Aug 2017 @ 0722 wc long1h 41m
19 Aug 2017 @ 0541 wc1h 37m
19 Aug 2017 @ 0404 wc1h 45m
19 Aug 2017 @ 0219 wc1h 39m
19 Aug 2017 @ 0040 wc1h 39m
18 Aug 2017 @ 2301 long1h 47m
18 Aug 2017 @ 2114 long1h 9m
18 Aug 2017 @ 2005 wc short1h 38m
18 Aug 2017 @ 18271h 37m
18 Aug 2017 @ 1650 wc long1h 43m
18 Aug 2017 @ 1507 ns wc long1h 9m
18 Aug 2017 @ 1358 wc short1h 35m
18 Aug 2017 @ 1223 wc long1h 40m
18 Aug 2017 @ 1043 wc long1h 35m
18 Aug 2017 @ 0908 wc long1h 42m
18 Aug 2017 @ 0726 wc long1h 31m
18 Aug 2017 @ 0555 wc long1h 47m
18 Aug 2017 @ 0408 wc1h 45m
18 Aug 2017 @ 0223 wc1h 33m
18 Aug 2017 @ 0050 wc1h 45m
17 Aug 2017 @ 2305 wc1h 38m
17 Aug 2017 @ 2127 wc long1h 33m
17 Aug 2017 @ 1954 wc long1h 32m
17 Aug 2017 @ 1822 wc long1h 50m
17 Aug 2017 @ 1632 wc long1h 7m
17 Aug 2017 @ 1525 wc short1h 36m
17 Aug 2017 @ 1349 wc long1h 55m
17 Aug 2017 @ 1154 wc long1h 30m
17 Aug 2017 @ 1024 ie3h 34m
17 Aug 2017 @ 0650 ie long2h 45m
17 Aug 2017 @ 0405 wc1h 41m
17 Aug 2017 @ 0224 wc1h 31m
17 Aug 2017 @ 0053 wc3h 19m
16 Aug 2017 @ 2134 wc long1h 0m
16 Aug 2017 @ 2034 wc short1h 29m
16 Aug 2017 @ 1905 wc long1h 50m
16 Aug 2017 @ 1715 wc long1h 46m
16 Aug 2017 @ 1529 wc long1h 32m
16 Aug 2017 @ 1357 wc long~4m 13s 1h 30m
16 Aug 2017 @ 1227 wc long1h 33m
16 Aug 2017 @ 1054 wc long~4m 22s 1h 46m
16 Aug 2017 @ 0908 wc long<3m 10s 1h 37m
16 Aug 2017 @ 0731 long1h 29m
16 Aug 2017 @ 0602 wc long1h 54m

Interval Statistics

Interval Count100
Min1h 0m
Max9h 40m
Mean1h 42m
Median1h 36m

Latest Notes

Note IDStart TimeEnd TimeEntrantNote
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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