Last Known Eruption
43m ago
Predicted Next Eruption
Today at 1806 ± 13 minutes

Latest Eruptions

Eruption DurationInterval
21 Sep 2018 @ 1629 wc long~4m 33s 1h 34m
21 Sep 2018 @ 1455 wc long~4m 28s 1h 26m
21 Sep 2018 @ 1329 wc long~3m 48s 1h 49m
21 Sep 2018 @ 1140 wc long~4m 16s 1h 24m
21 Sep 2018 @ 1016 wc long1h 29m
21 Sep 2018 @ 0847 wc long1h 33m
21 Sep 2018 @ 0714 wc long1h 35m
21 Sep 2018 @ 0539 wc long1h 28m
21 Sep 2018 @ 0411 wc long1h 37m
21 Sep 2018 @ 0234 wc long1h 33m
21 Sep 2018 @ 0101 wc long1h 30m
20 Sep 2018 @ 2331 wc long1h 26m
20 Sep 2018 @ 2205 wc long1h 22m
20 Sep 2018 @ 2043 wc1h 39m
20 Sep 2018 @ 1904 wc long1h 24m
20 Sep 2018 @ 1740 wc long1h 40m
20 Sep 2018 @ 1600 wc long1h 20m
20 Sep 2018 @ 1440 wc long~4m 13s 1h 38m
20 Sep 2018 @ 1302 wc long~4m 13s 1h 33m
20 Sep 2018 @ 1129 wc long~4m 1s 1h 36m
20 Sep 2018 @ 0953 wc long>3m 43s 1h 41m
20 Sep 2018 @ 0812 wc long~3m 54s 1h 30m
20 Sep 2018 @ 0642 wc long1h 30m
20 Sep 2018 @ 0512 wc long1h 43m
20 Sep 2018 @ 0329 wc long1h 14m
20 Sep 2018 @ 0215 wc long1h 54m
20 Sep 2018 @ 0021 wc long1h 18m
19 Sep 2018 @ 2303 wc long1h 43m
19 Sep 2018 @ 2120 wc long1h 41m
19 Sep 2018 @ 1939 wc long1h 27m
19 Sep 2018 @ 1812 wc long1h 30m
19 Sep 2018 @ 1642 wc1h 35m
19 Sep 2018 @ 1507 wc1h 27m
19 Sep 2018 @ 1340 ie wc long1h 25m
19 Sep 2018 @ 1215 wc long~3m 41s 1h 32m
19 Sep 2018 @ 1043 ns wc long1h 25m
19 Sep 2018 @ 0918 wc long1h 52m
19 Sep 2018 @ 0726 wc long1h 30m
19 Sep 2018 @ 0556 wc long1h 28m
19 Sep 2018 @ 0428 wc long1h 35m
19 Sep 2018 @ 0253 wc1h 22m
19 Sep 2018 @ 0131 wc long1h 39m
18 Sep 2018 @ 2352 wc long1h 25m
18 Sep 2018 @ 2227 wc long1h 37m
18 Sep 2018 @ 2050 wc long1h 35m
18 Sep 2018 @ 1915 wc long1h 28m
18 Sep 2018 @ 1747 wc long1h 37m
18 Sep 2018 @ 1610 wc long1h 27m
18 Sep 2018 @ 1443 wc long~4m 2s 1h 40m
18 Sep 2018 @ 1303 wc long1h 32m
18 Sep 2018 @ 1131 wc long~4m 46s 1h 3m
18 Sep 2018 @ 1028 wc short1h 26m
18 Sep 2018 @ 0902 wc long1h 33m
18 Sep 2018 @ 0729 wc long1h 28m
18 Sep 2018 @ 0601 long1h 28m
18 Sep 2018 @ 0433 wc long1h 31m
18 Sep 2018 @ 0302 wc long1h 42m
18 Sep 2018 @ 0120 wc long54m
18 Sep 2018 @ 0026 wc short1h 42m
17 Sep 2018 @ 2244 wc long1h 45m
17 Sep 2018 @ 2059 wc long1h 34m
17 Sep 2018 @ 1925 wc long1h 32m
17 Sep 2018 @ 1753 wc long1h 31m
17 Sep 2018 @ 1622 A long1h 24m
17 Sep 2018 @ 1458 wc long~4m 5s 1h 41m
17 Sep 2018 @ 1317 wc long~3m 57s 1h 26m
17 Sep 2018 @ 1151 wc long~4m 14s 1h 29m
17 Sep 2018 @ 1022 wc long~4m 8s 1h 27m
17 Sep 2018 @ 0855 wc long1h 29m
17 Sep 2018 @ 0726 wc long1h 35m
17 Sep 2018 @ 0551 wc long1h 42m
17 Sep 2018 @ 0409 wc long1h 32m
17 Sep 2018 @ 0237 wc long1h 32m
17 Sep 2018 @ 0105 wc long1h 41m
16 Sep 2018 @ 2324 wc long1h 33m
16 Sep 2018 @ 2151 wc long1h 34m
16 Sep 2018 @ 2017 wc long1h 31m
16 Sep 2018 @ 1846 wc long1h 28m
16 Sep 2018 @ 1718 wc long1h 39m
16 Sep 2018 @ 1539 wc long1h 29m
16 Sep 2018 @ 1410 wc long~4m 6s 1h 34m
16 Sep 2018 @ 1236 wc long~3m 57s 1h 36m
16 Sep 2018 @ 1100 wc long~4m 32s 1h 12m
16 Sep 2018 @ 0948 wc short1h 53m
16 Sep 2018 @ 0755 wc long~3m 56s 1h 30m
16 Sep 2018 @ 0625 wc long~4m 14s 1h 31m
16 Sep 2018 @ 0454 wc long1h 38m
16 Sep 2018 @ 0316 A wc1h 36m
16 Sep 2018 @ 0140 wc long1h 18m
16 Sep 2018 @ 0022 wc short1h 48m
15 Sep 2018 @ 2234 wc long1h 30m
15 Sep 2018 @ 2104 wc long1h 34m
15 Sep 2018 @ 1930 long1h 23m
15 Sep 2018 @ 1807 wc long~3m 34s 1h 35m
15 Sep 2018 @ 1632 wc long1h 36m
15 Sep 2018 @ 1456 wc long1h 24m
15 Sep 2018 @ 1332 wc long~4m 28s 1h 38m
15 Sep 2018 @ 1154 wc long~4m 2s 1h 27m
15 Sep 2018 @ 1027 wc long~3m 46s 1h 43m
15 Sep 2018 @ 0844 wc long<4m26s1h 5m

Interval Statistics

Interval Count100
Min54m
Max1h 54m
Mean1h 31m
Median1h 32m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
10247 16 Sep 2018 @ 0711 --- STS Missing eruptions between 2104 and 140?
9896 27 Aug 2018 @ 0704 --- STS Is there an eruption missing between 22:32 and 01:24?
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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