Last Known Eruption
1h 10m ago
Predicted Next Eruption
Today at 1835 ± 13 minutes

Latest Eruptions

EruptionDurationInterval
19 Jan 2018 @ 1658 wc1h 36m
19 Jan 2018 @ 1522 wc long3m32s < d < 4m05s1h 29m
19 Jan 2018 @ 1353 wc long1h 26m
19 Jan 2018 @ 1227 wc long1h 34m
19 Jan 2018 @ 1053 wc long1h 38m
19 Jan 2018 @ 0915 wc long1h 40m
19 Jan 2018 @ 0735 wc1h 32m
19 Jan 2018 @ 0603 wc long1h 38m
19 Jan 2018 @ 0425 wc long1h 29m
19 Jan 2018 @ 0256 wc long1h 45m
19 Jan 2018 @ 0111 wc long1h 35m
18 Jan 2018 @ 2336 wc long1h 39m
18 Jan 2018 @ 2157 wc long1h 35m
18 Jan 2018 @ 2022 wc long1h 39m
18 Jan 2018 @ 1843 wc long1h 35m
18 Jan 2018 @ 1708 wc long1h 36m
18 Jan 2018 @ 1532 wc long1h 36m
18 Jan 2018 @ 1356 wc long1h 32m
18 Jan 2018 @ 1224 wc long1h 34m
18 Jan 2018 @ 1050 wc long1h 40m
18 Jan 2018 @ 0910 wc long1h 39m
18 Jan 2018 @ 0731 wc long1h 32m
18 Jan 2018 @ 0559 wc1h 33m
18 Jan 2018 @ 0426 wc1h 26m
18 Jan 2018 @ 0300 wc1h 54m
18 Jan 2018 @ 0106 wc long1h 1m
18 Jan 2018 @ 0005 wc1h 32m
17 Jan 2018 @ 2233 wc1h 48m
17 Jan 2018 @ 2045 wc3h 5m
17 Jan 2018 @ 1740 wc long1h 35m
17 Jan 2018 @ 1605 wc long1h 21m
17 Jan 2018 @ 1444 wc short1h 25m
17 Jan 2018 @ 1319 wc long1h 37m
17 Jan 2018 @ 1142 wc long1h 10m
17 Jan 2018 @ 1032 wc short1h 30m
17 Jan 2018 @ 0902 wc long1h 36m
17 Jan 2018 @ 0726 wc long1h 34m
17 Jan 2018 @ 0552 wc long1h 27m
17 Jan 2018 @ 0425 wc1h 34m
17 Jan 2018 @ 0251 wc long1h 36m
17 Jan 2018 @ 0115 wc long1h 30m
16 Jan 2018 @ 2345 wc long1h 35m
16 Jan 2018 @ 2210 wc long1h 35m
16 Jan 2018 @ 2035 wc long1h 34m
16 Jan 2018 @ 1901 wc long1h 44m
16 Jan 2018 @ 1717 wc long1h 31m
16 Jan 2018 @ 1546 wc long1h 37m
16 Jan 2018 @ 1409 wc long1h 33m
16 Jan 2018 @ 1236 wc long1h 30m
16 Jan 2018 @ 1106 wc long1h 37m
16 Jan 2018 @ 0929 wc long1h 33m
16 Jan 2018 @ 0756 wc long1h 32m
16 Jan 2018 @ 0624 wc1h 38m
16 Jan 2018 @ 0446 wc long1h 25m
16 Jan 2018 @ 0321 wc1h 33m
16 Jan 2018 @ 0148 wc long1h 11m
16 Jan 2018 @ 0037 wc short1h 36m
15 Jan 2018 @ 2301 wc long1h 32m
15 Jan 2018 @ 2129 wc long1h 41m
15 Jan 2018 @ 1948 wc long3h 6m
15 Jan 2018 @ 1642 wc long1h 30m
15 Jan 2018 @ 1512 wc long1h 41m
15 Jan 2018 @ 1331 wc long±3m44s1h 43m
15 Jan 2018 @ 1148 ns wc long1h 4m
15 Jan 2018 @ 1044 wc2h 45m
15 Jan 2018 @ 0759 wc1h 35m
15 Jan 2018 @ 0624 wc long1h 13m
15 Jan 2018 @ 0511 wc short1h 46m
15 Jan 2018 @ 0325 wc long1h 34m
15 Jan 2018 @ 0151 wc long1h 31m
15 Jan 2018 @ 0020 wc long1h 33m
14 Jan 2018 @ 2247 wc long1h 45m
14 Jan 2018 @ 2102 wc1h 33m
14 Jan 2018 @ 1929 wc long1h 39m
14 Jan 2018 @ 1750 wc long3h 7m
14 Jan 2018 @ 1443 ie wc1h 27m
14 Jan 2018 @ 1316 wc long1h 35m
14 Jan 2018 @ 1141 wc long1h 29m
14 Jan 2018 @ 1012 wc long1h 25m
14 Jan 2018 @ 0847 wc1h 40m
14 Jan 2018 @ 0707 wc long1h 35m
14 Jan 2018 @ 0532 wc long1h 29m
14 Jan 2018 @ 0403 wc long1h 28m
14 Jan 2018 @ 0235 wc long1h 39m
14 Jan 2018 @ 0056 wc long1h 0m
13 Jan 2018 @ 2356 wc short1h 59m
13 Jan 2018 @ 2157 wc1h 24m
13 Jan 2018 @ 2033 wc1h 50m
13 Jan 2018 @ 1843 ns wc1h 38m
13 Jan 2018 @ 1705 wc long1h 13m
13 Jan 2018 @ 1552 wc short1h 28m
13 Jan 2018 @ 1424 wc long1h 40m
13 Jan 2018 @ 1244 wc long1h 44m
13 Jan 2018 @ 1100 wc long1h 28m
13 Jan 2018 @ 0932 wc1h 35m
13 Jan 2018 @ 0757 wc long1h 39m
13 Jan 2018 @ 0618 wc long1h 33m
13 Jan 2018 @ 0445 wc long1h 35m
13 Jan 2018 @ 0310 wc long1h 34m
13 Jan 2018 @ 0136 wc long1h 33m

Interval Statistics

Interval Count100
Min1h 0m
Max3h 7m
Mean1h 36m
Median1h 34m

Latest Notes

Note IDStart TimeEnd TimeEntrantNote
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 --- 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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