Last Known Eruption
1h 6m ago
Predicted Next Eruption
Today at 2121 ± 13 minutes

Latest Eruptions

EruptionDurationInterval
22 Nov 2017 @ 1944 wc long1h 38m
22 Nov 2017 @ 1806 wc long1h 44m
22 Nov 2017 @ 1622 wc long3h 6m
22 Nov 2017 @ 1316 wc long1h 38m
22 Nov 2017 @ 1138 wc1h 34m
22 Nov 2017 @ 1004 wc long1h 29m
22 Nov 2017 @ 0835 wc long1h 28m
22 Nov 2017 @ 0707 wc long1h 33m
22 Nov 2017 @ 0534 wc long1h 43m
22 Nov 2017 @ 0351 wc long1h 30m
22 Nov 2017 @ 0221 wc long1h 34m
22 Nov 2017 @ 0047 wc long1h 30m
21 Nov 2017 @ 2317 wc long1h 31m
21 Nov 2017 @ 2146 ns wc3h 12m
21 Nov 2017 @ 1834 wc long1h 29m
21 Nov 2017 @ 1705 wc1h 30m
21 Nov 2017 @ 1535 wc long1h 19m
21 Nov 2017 @ 1416 wc≤3m18s1h 49m
21 Nov 2017 @ 1227 wc long1h 33m
21 Nov 2017 @ 1054 wc long1h 21m
21 Nov 2017 @ 0933 wc long1h 42m
21 Nov 2017 @ 0751 wc long1h 46m
21 Nov 2017 @ 0605 wc long1h 45m
21 Nov 2017 @ 0420 wc long1h 28m
21 Nov 2017 @ 0252 wc long1h 42m
21 Nov 2017 @ 0110 wc long1h 25m
20 Nov 2017 @ 2345 wc long1h 38m
20 Nov 2017 @ 2207 wc long1h 24m
20 Nov 2017 @ 2042:54 wc long1h 33m 58s
20 Nov 2017 @ 1908:56 wc long1h 33m
20 Nov 2017 @ 1735 wc1h 36m
20 Nov 2017 @ 1559 wc1h 39m
20 Nov 2017 @ 1420 wc long3h 4m
20 Nov 2017 @ 1116 wc long3m 50s 1h 43m
20 Nov 2017 @ 0933 wc long1h 21m
20 Nov 2017 @ 0812 wc short1h 45m
20 Nov 2017 @ 0627 wc long1h 36m
20 Nov 2017 @ 0451 wc long1h 41m
20 Nov 2017 @ 0310 wc long1h 5m
20 Nov 2017 @ 0205 wc short1h 25m
20 Nov 2017 @ 0040 wc long1h 37m
19 Nov 2017 @ 2302:16 wc long1h 25m 36s
19 Nov 2017 @ 2136:40 wc long1h 35m 9s
19 Nov 2017 @ 2001:31 wc long1h 38m 5s
19 Nov 2017 @ 1823:26 wc long1h 26m
19 Nov 2017 @ 1657 wc long1h 35m
19 Nov 2017 @ 1522 wc long1h 39m
19 Nov 2017 @ 1343 wc long3m 32s 1h 48m
19 Nov 2017 @ 1155 wc long59m
19 Nov 2017 @ 1056 wc short1h 25m
19 Nov 2017 @ 0931 wc long1h 40m
19 Nov 2017 @ 0751 wc long1h 24m
19 Nov 2017 @ 0627 wc1h 42m
19 Nov 2017 @ 0445 wc long1h 34m
19 Nov 2017 @ 0311 wc long1h 28m
19 Nov 2017 @ 0143 wc long1h 35m
19 Nov 2017 @ 0008 wc long1h 30m
18 Nov 2017 @ 2238 wc long1h 45m
18 Nov 2017 @ 2053 wc long1h 8m
18 Nov 2017 @ 1945 wc1h 25m
18 Nov 2017 @ 1820 wc long1h 42m
18 Nov 2017 @ 1638 wc long3¾m1h 30m
18 Nov 2017 @ 1508 ns wc long1h 8m
18 Nov 2017 @ 1400 wc short1h 35m
18 Nov 2017 @ 1225 wc long1h 5m
18 Nov 2017 @ 1120 wc short1h 33m
18 Nov 2017 @ 0947 wc long1h 9m
18 Nov 2017 @ 0838 wc short1h 25m
18 Nov 2017 @ 0713 wc long1h 42m
18 Nov 2017 @ 0530:17 wc long1h 25m 57s
18 Nov 2017 @ 0404:20 wc long1h 48m
18 Nov 2017 @ 0216 wc long59m
18 Nov 2017 @ 0117 wc short1h 36m
17 Nov 2017 @ 2341 wc1h 37m
17 Nov 2017 @ 2204 wc1h 33m
17 Nov 2017 @ 2031 wc1h 33m
17 Nov 2017 @ 1858 wc1h 6m
17 Nov 2017 @ 1752 wc short1m 52s 1h 34m
17 Nov 2017 @ 1618 wc long3m 51s 1h 42m
17 Nov 2017 @ 1436 wc long4m 6s 1h 30m
17 Nov 2017 @ 1306 wc long1h 39m
17 Nov 2017 @ 1127 wc long3m 57s 1h 31m
17 Nov 2017 @ 0956 wc long4m 6s 1h 39m
17 Nov 2017 @ 0816:42 wc long1h 32m
17 Nov 2017 @ 0644 wc long7h 55m
16 Nov 2017 @ 2249 wc long6h 8m
16 Nov 2017 @ 1640:58 wc long1h 54m
16 Nov 2017 @ 1446 wc long59m
16 Nov 2017 @ 1347 wc short1h 33m
16 Nov 2017 @ 1214 wc long1h 32m
16 Nov 2017 @ 1042 wc long1h 43m
16 Nov 2017 @ 0859 wc1h 35m
16 Nov 2017 @ 0724 wc long1h 34m
16 Nov 2017 @ 0550 wc long1h 45m
16 Nov 2017 @ 0405 wc long1h 21m
16 Nov 2017 @ 0244 wc long1h 37m
16 Nov 2017 @ 0107 wc long1h 37m
15 Nov 2017 @ 2330 wc long1h 31m
15 Nov 2017 @ 2159 wc long1h 35m
15 Nov 2017 @ 2024 wc long1h 31m

Interval Statistics

Interval Count100
Min59m
Max7h 55m
Mean1h 41m
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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