Last Known Eruption
22m ago
Predicted Next Eruption
Today at 1320 ± 13 minutes

Latest Eruptions

Eruption DurationInterval
26 May 2018 @ 1143 wc long1h 30m
26 May 2018 @ 1013 wc long1h 29m
26 May 2018 @ 0844 wc long1h 36m
26 May 2018 @ 0708 wc long1h 24m
26 May 2018 @ 0544 wc long1h 35m
26 May 2018 @ 0409 wc long1h 44m
26 May 2018 @ 0225 wc long1h 36m
26 May 2018 @ 0049 wc long1h 32m
25 May 2018 @ 2317 wc long1h 33m
25 May 2018 @ 2144 wc long1h 32m
25 May 2018 @ 2012 wc long1h 43m
25 May 2018 @ 1829 wc long1h 38m
25 May 2018 @ 1651 wc4m 1h 33m
25 May 2018 @ 1518 wc long±4m09s1h 36m
25 May 2018 @ 1342 wc long±4m02s1h 27m
25 May 2018 @ 1215 wc long±4m09s1h 33m
25 May 2018 @ 1042 wc long±4m15s1h 47m
25 May 2018 @ 0855 wc long1h 44m
25 May 2018 @ 0711 wc long1h 24m
25 May 2018 @ 0547 wc long1h 32m
25 May 2018 @ 0415 wc long1h 35m
25 May 2018 @ 0240 wc long1h 36m
25 May 2018 @ 0104 wc long1h 42m
24 May 2018 @ 2322 wc long1h 21m
24 May 2018 @ 2201 wc long1h 56m
24 May 2018 @ 2005 wc long1h 41m
24 May 2018 @ 1824 wc long1h 37m
24 May 2018 @ 1647 wc long1h 22m
24 May 2018 @ 1525 wc long1h 42m
24 May 2018 @ 1343 wc long1h 23m
24 May 2018 @ 1220 wc±3m13s1h 44m
24 May 2018 @ 1036 wc long1h 30m
24 May 2018 @ 0906 wc long1h 41m
24 May 2018 @ 0725 wc long1h 24m
24 May 2018 @ 0601 wc long1h 46m
24 May 2018 @ 0415 wc long1h 25m
24 May 2018 @ 0250 wc long1h 37m
24 May 2018 @ 0113 wc long1h 36m
23 May 2018 @ 2337 wc long1h 32m
23 May 2018 @ 2205 wc long1h 23m
23 May 2018 @ 2042 wc long1h 41m
23 May 2018 @ 1901 wc long1h 35m
23 May 2018 @ 1726 wc long1h 38m
23 May 2018 @ 1548 wc long1h 38m
23 May 2018 @ 1410 wc long1h 38m
23 May 2018 @ 1232 wc long1h 32m
23 May 2018 @ 1100 wc long1h 38m
23 May 2018 @ 0922 wc long1h 20m
23 May 2018 @ 0802 wc1h 39m
23 May 2018 @ 0623 wc long1h 30m
23 May 2018 @ 0453 wc long1h 27m
23 May 2018 @ 0326 wc long1h 50m
23 May 2018 @ 0136 wc long1h 27m
23 May 2018 @ 0009 wc long1h 33m
22 May 2018 @ 2236 wc long1h 35m
22 May 2018 @ 2101 long1h 34m
22 May 2018 @ 1927 wc long1h 29m
22 May 2018 @ 1758 wc long1h 44m
22 May 2018 @ 1614 wc long1h 40m
22 May 2018 @ 1434 long1h 29m
22 May 2018 @ 1305 long1h 37m
22 May 2018 @ 1128 long1h 36m
22 May 2018 @ 0952 wc long1h 51m
22 May 2018 @ 0801 wc long1h 29m
22 May 2018 @ 0632 wc long1h 41m
22 May 2018 @ 0451 wc long1h 29m
22 May 2018 @ 0322 wc long1h 55m
22 May 2018 @ 0127 wc long1h 16m
22 May 2018 @ 0011 wc short1h 31m
21 May 2018 @ 2240 wc long1h 34m
21 May 2018 @ 2106 wc1h 31m
21 May 2018 @ 1935 wc long1h 39m
21 May 2018 @ 1756 wc long1h 29m
21 May 2018 @ 1627 wc long1h 38m
21 May 2018 @ 1449 wc long1h 36m
21 May 2018 @ 1313 wc long1h 47m
21 May 2018 @ 1126 wc long1h 38m
21 May 2018 @ 0948 wc long1h 27m
21 May 2018 @ 0821 wc long1h 34m
21 May 2018 @ 0647 wc long1h 34m
21 May 2018 @ 0513 wc long1h 28m
21 May 2018 @ 0345 wc long1h 43m
21 May 2018 @ 0202 wc long1h 36m
21 May 2018 @ 0026 wc long56m
20 May 2018 @ 2330 wc short1h 44m
20 May 2018 @ 2146 wc long1h 33m
20 May 2018 @ 2013 wc long1h 31m
20 May 2018 @ 1842 long1h 41m
20 May 2018 @ 1701 wc long1h 27m
20 May 2018 @ 1534 wc long1h 52m
20 May 2018 @ 1342 wc long1h 26m
20 May 2018 @ 1216 wc long>3m 51s 1h 46m
20 May 2018 @ 1030 wc long1h 34m
20 May 2018 @ 0856 wc long1h 33m
20 May 2018 @ 0723 wc long1h 45m
20 May 2018 @ 0538 wc long1h 32m
20 May 2018 @ 0406 wc long1h 32m
20 May 2018 @ 0234 wc long1h 35m
20 May 2018 @ 0059 wc long54m
20 May 2018 @ 0005 wc short1h 50m

Interval Statistics

Interval Count100
Min54m
Max1h 56m
Mean1h 34m
Median1h 35m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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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