Last Known Eruption
1h 21m ago
Predicted Next Eruption
Today at 1345 ± 13 minutes

Latest Eruptions

Eruption DurationInterval
16 Oct 2018 @ 1208 wc long1h 26m
16 Oct 2018 @ 1042 wc long1h 41m
16 Oct 2018 @ 0901 wc long~3m 59s 1h 24m
16 Oct 2018 @ 0737 wc long1h 32m
16 Oct 2018 @ 0605 wc long1h 36m
16 Oct 2018 @ 0428:28 wc long1h 34m 32s
16 Oct 2018 @ 0253:56 wc long1h 37m 14s
16 Oct 2018 @ 0116:42 wc long1h 26m 30s
15 Oct 2018 @ 2350:12 wc3m 12s 1h 33m 1s
15 Oct 2018 @ 2217:11 wc long1h 27m
15 Oct 2018 @ 2050 wc long1h 39m
15 Oct 2018 @ 1910:50 wc long1h 22m
15 Oct 2018 @ 1748 wc long1h 37m
15 Oct 2018 @ 1611 wc long1h 35m
15 Oct 2018 @ 1436 wc long1h 32m
15 Oct 2018 @ 1304 wc long~3m 59s 1h 34m
15 Oct 2018 @ 1130 ie wc long1h 35m
15 Oct 2018 @ 0955 wc long1h 35m
15 Oct 2018 @ 0820 wc long1h 31m
15 Oct 2018 @ 0649 wc long1h 45m
15 Oct 2018 @ 0504 wc long1h 25m
15 Oct 2018 @ 0339 wc long1h 29m
15 Oct 2018 @ 0210 wc long1h 39m
15 Oct 2018 @ 0031 wc long1h 27m
14 Oct 2018 @ 2304 wc long1h 45m
14 Oct 2018 @ 2119 wc long1h 23m
14 Oct 2018 @ 1956 wc long1h 41m
14 Oct 2018 @ 1815 wc long1h 8m
14 Oct 2018 @ 1707 wc1h 31m
14 Oct 2018 @ 1536 wc long1h 13m
14 Oct 2018 @ 1423 wc short1h 37m
14 Oct 2018 @ 1246 wc long~4m 24s 1h 2m
14 Oct 2018 @ 1144 wc short~1m 53s 1h 47m
14 Oct 2018 @ 0957 wc long1h 35m
14 Oct 2018 @ 0822 wc long1h 30m
14 Oct 2018 @ 0652 wc long1h 25m
14 Oct 2018 @ 0527 wc long1h 31m
14 Oct 2018 @ 0356 wc long1h 34m
14 Oct 2018 @ 0222 wc long1h 30m
14 Oct 2018 @ 0052 wc long1h 30m
13 Oct 2018 @ 2322 wc1h 31m
13 Oct 2018 @ 2151 wc long1h 24m
13 Oct 2018 @ 2027 wc long1h 31m
13 Oct 2018 @ 1856 wc long1h 29m
13 Oct 2018 @ 1727 wc long1h 34m
13 Oct 2018 @ 1553 wc long1h 25m
13 Oct 2018 @ 1428 wc long1h 35m
13 Oct 2018 @ 1253 wc long1h 35m
13 Oct 2018 @ 1118 wc long~4m 9s 1h 26m
13 Oct 2018 @ 0952 wc long1h 44m
13 Oct 2018 @ 0808 wc long1h 28m
13 Oct 2018 @ 0640 wc long1h 36m
13 Oct 2018 @ 0504 wc long1h 23m
13 Oct 2018 @ 0341 wc long1h 40m
13 Oct 2018 @ 0201 wc long1h 33m
13 Oct 2018 @ 0028 wc long1h 31m
12 Oct 2018 @ 2257 wc long1h 37m
12 Oct 2018 @ 2120 wc long1h 40m
12 Oct 2018 @ 1940 wc long1h 26m
12 Oct 2018 @ 1814 wc long1h 30m
12 Oct 2018 @ 1644 wc long1h 34m
12 Oct 2018 @ 1510 wc long1h 34m
12 Oct 2018 @ 1336 wc long1h 30m
12 Oct 2018 @ 1206 wc1h 34m
12 Oct 2018 @ 1032 long1h 26m
12 Oct 2018 @ 0906 wc long1h 27m
12 Oct 2018 @ 0739 wc long1h 32m
12 Oct 2018 @ 0607 wc long1h 33m
12 Oct 2018 @ 0434 wc long1h 35m
12 Oct 2018 @ 0259 wc long1h 34m
12 Oct 2018 @ 0125 wc long1h 35m
11 Oct 2018 @ 2350 wc long1h 39m
11 Oct 2018 @ 2211 wc long1h 30m
11 Oct 2018 @ 2041 wc long1h 34m
11 Oct 2018 @ 1907 wc long1h 36m
11 Oct 2018 @ 1731 wc long1h 28m
11 Oct 2018 @ 1603 wc long1h 42m
11 Oct 2018 @ 1421 wc long1h 37m
11 Oct 2018 @ 1244 wc long1h 29m
11 Oct 2018 @ 1115 wc long1h 28m
11 Oct 2018 @ 0947 wc long1h 30m
11 Oct 2018 @ 0817 wc long1h 28m
11 Oct 2018 @ 0649 wc long1h 41m
11 Oct 2018 @ 0508 wc long1h 33m
11 Oct 2018 @ 0335 wc long1h 25m
11 Oct 2018 @ 0210 wc1h 47m
11 Oct 2018 @ 0023 wc long1h 47m
10 Oct 2018 @ 2236 long4m 35s 1h 32m
10 Oct 2018 @ 2104 wc long1h 35m
10 Oct 2018 @ 1929 wc long1h 27m
10 Oct 2018 @ 1802 wc long1h 38m
10 Oct 2018 @ 1624 wc long1h 19m
10 Oct 2018 @ 1505 wc long1h 42m
10 Oct 2018 @ 1323 wc long1h 41m
10 Oct 2018 @ 1142 wc1h 37m
10 Oct 2018 @ 1005 wc long1h 31m
10 Oct 2018 @ 0834 long4m 7s 1h 32m
10 Oct 2018 @ 0702 wc long1h 41m
10 Oct 2018 @ 0521 wc long1h 25m
10 Oct 2018 @ 0356 wc long1h 34m

Interval Statistics

Interval Count100
Min1h 2m
Max1h 47m
Mean1h 32m
Median1h 33m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
10615 16 Oct 2018 @ 0417 --- DGInc Large preplay for ~30s.
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.
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.
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.
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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