Last Known Eruption
5h 38m ago
Predicted Next Eruption
Mar 31 at 0240 ± 45 minutes

Latest Eruptions

EruptionDurationInterval
30 Mar 2017 @ 1255 wc maj14h 34m
29 Mar 2017 @ 2221 wc maj14h 15m
29 Mar 2017 @ 0806 wc maj14h 7m
28 Mar 2017 @ 1759 wc maj14h 43m
28 Mar 2017 @ 0316 wc maj4h 41m
27 Mar 2017 @ 2235 wc min13h 22m
27 Mar 2017 @ 0913 ie wc maj14h 43m
26 Mar 2017 @ 1830 ie wc maj15h 18m
26 Mar 2017 @ 0312 wc maj6h 27m
25 Mar 2017 @ 2045 wc min14h 17m
25 Mar 2017 @ 0628 wc min14h 4m
24 Mar 2017 @ 1624 maj14h 27m
24 Mar 2017 @ 0157 wc maj14h 6m
23 Mar 2017 @ 1151 wc maj13h 51m
22 Mar 2017 @ 2200 wc maj14h 10m
22 Mar 2017 @ 0750 wc maj13h 50m
21 Mar 2017 @ 1800 wc maj1d 4h 20m
20 Mar 2017 @ 1340 wc maj14h 5m
19 Mar 2017 @ 2335 wc maj14h 10m
19 Mar 2017 @ 0925 ns wc14h 26m
18 Mar 2017 @ 1859 ie wc maj13h 58m
18 Mar 2017 @ 0501 wc maj15h 18m
17 Mar 2017 @ 1343 ie wc maj5h 20m
17 Mar 2017 @ 0823 wc min3m 15h 54m
16 Mar 2017 @ 1629 ie wc maj12h 17m
16 Mar 2017 @ 0412 wc min~4m 4h 46m
15 Mar 2017 @ 2326 wc min~3m 13h 31m
15 Mar 2017 @ 0955 wc maj13h 39m
14 Mar 2017 @ 2016 wc maj14h 2m
14 Mar 2017 @ 0614 wc maj13h 54m
13 Mar 2017 @ 1620 ie wc maj14h 14m
13 Mar 2017 @ 0206 wc maj14h 44m
12 Mar 2017 @ 1122 ie wc maj3h 54m
12 Mar 2017 @ 0728 wc min15h 14m
11 Mar 2017 @ 1514 ie wc maj7h 31m
11 Mar 2017 @ 0743 wc min14h 2m
10 Mar 2017 @ 1741 ie wc maj14h 27m
10 Mar 2017 @ 0314 wc maj14h 29m
09 Mar 2017 @ 1245 wc maj14h 23m
08 Mar 2017 @ 2222 wc maj14h 10m
08 Mar 2017 @ 0812 wc maj1d 4h 25m
07 Mar 2017 @ 0347 wc maj14h 16m
06 Mar 2017 @ 1331 ie wc maj15h 29m
05 Mar 2017 @ 2202 wc maj13h 5m
05 Mar 2017 @ 0857 wc maj14h 21m
04 Mar 2017 @ 1836 wc maj14h 9m
04 Mar 2017 @ 0427 wc maj14h 53m
03 Mar 2017 @ 1334 wc maj5h 21m
03 Mar 2017 @ 0813 wc min13h 56m
02 Mar 2017 @ 1817 wc maj14h 25m
02 Mar 2017 @ 0352 wc maj15h 16m
01 Mar 2017 @ 1236 E5h 19m
01 Mar 2017 @ 0717 ie wc maj13h 13m
28 Feb 2017 @ 1804 wc maj15h 2m
28 Feb 2017 @ 0302 wc maj14h 11m
27 Feb 2017 @ 1251 ns wc maj14h 24m
26 Feb 2017 @ 2227 wc maj14h 12m
26 Feb 2017 @ 0815 wc maj14h 37m
25 Feb 2017 @ 1738 maj14h 42m
25 Feb 2017 @ 0256 E16h 20m
24 Feb 2017 @ 1036 ns wc maj1d 7h 34m
23 Feb 2017 @ 0302 ie wc maj15h 11m
22 Feb 2017 @ 1151 wc maj14h 48m
21 Feb 2017 @ 2103 wc maj1d 13h 27m
20 Feb 2017 @ 0736 wc maj14h 38m
19 Feb 2017 @ 1658 maj14h 24m
19 Feb 2017 @ 0234 E maj15h 42m
18 Feb 2017 @ 1052 maj19h 36m
17 Feb 2017 @ 1516 min1d 4h 32m
16 Feb 2017 @ 1044 ie maj14h 1m
15 Feb 2017 @ 2043 wc maj16h 42m
15 Feb 2017 @ 0401 ie wc maj4h 16m
14 Feb 2017 @ 2345 ? wc min15h 43m
14 Feb 2017 @ 0802 ie wc15h 44m
13 Feb 2017 @ 1618 ie wc maj7h 18m
13 Feb 2017 @ 0900 ns wc min16h 6m
12 Feb 2017 @ 16545h 39m
12 Feb 2017 @ 1115 wc min15h 30m
11 Feb 2017 @ 1945 wc maj10h 7m
11 Feb 2017 @ 0938 wc min1d 6h 41m
10 Feb 2017 @ 0257 wc maj7h 33m
09 Feb 2017 @ 1924 wc min15h 6m
09 Feb 2017 @ 0418 maj14h 47m
08 Feb 2017 @ 1331 wc maj15h 8m
07 Feb 2017 @ 2223 wc maj14h 50m
07 Feb 2017 @ 0733 wc maj15h 27m
06 Feb 2017 @ 1606 wc maj15h 16m
06 Feb 2017 @ 0050 wc maj4h 6m
05 Feb 2017 @ 2044 wc min14h 11m
05 Feb 2017 @ 0633 wc maj15h 33m
04 Feb 2017 @ 1500 E maj10h 41m
04 Feb 2017 @ 0419 ? wc16h 3m
03 Feb 2017 @ 1216 wc maj14h 50m
02 Feb 2017 @ 2126 wc maj14h 57m
02 Feb 2017 @ 0629 wc maj14h 51m
01 Feb 2017 @ 1538 wc maj14h 52m
01 Feb 2017 @ 0046 wc maj14h 55m
31 Jan 2017 @ 0951 wc maj14h 50m
30 Jan 2017 @ 1901 wc maj15h 41m
30 Jan 2017 @ 0320 wc maj4h 37m

Interval Statistics

Interval Count100
Min3h 54m
Max1d 13h 27m
Mean14h 17m
Median14h 25m

Latest Notes

Note IDStart TimeEnd TimeEntrantNote
3924 24 Jan 2017 @ 2103 --- Casey Dark, but appears to be ie edit: still significant steam at 2207
3920 24 Jan 2017 @ 0629 --- Kitt B large steam cloud on cam, possibly ie, but too dark to see water
3904 29 Dec 2016 @ 1051 --- Kevin L Very foggy but it looked like Castle may have been ie. Fog downbasin may have been the result of a Castle eruption since it appeared that there was a steam phase plume at 1118 and the fog cleared shortly after that.
3780 13 Oct 2016 @ 1200 --- udo Castle has been jetting frequently 6 to 20 feet all afternoon as if it had a minor. It was quiet earlier in the morning. A bit odd.
3765 09 Oct 2016 @ 0759 --- Kitt B Castle had a major before 7am, boardwalk icy, path wet, and Castle quiet.
3733 01 Oct 2016 @ 0843 --- Kitt B Castle minored
3729 30 Sep 2016 @ 0756 --- Kitt B Castle was splashing around this morning, so it must have minor ed overnight
3730 30 Sep 2016 @ 0530 --- Kitt B Dan told me he heard Castle in steam phase. I saw some splashing from Castle, but then I left the basin to check on Great Fountain.
3689 19 Sep 2016 @ 2320 --- Casey Webcam observer mentioned short period of activity. If found to have had a minor eruption overnight, it was probably ie 2320.
3683 18 Sep 2016 @ 0645 --- JimS Quiet. Had a major eruption sometime overnight.
3665 15 Sep 2016 @ 0638 --- JimS Still sloshing from minor.
3657 14 Sep 2016 @ 0648 --- JimS Sloshing. Had a minor eruption sometime overnight.
3654 13 Sep 2016 @ 0642 --- JimS Quiet. Had a major eruption sometime overnight.
3649 12 Sep 2016 @ 0649 --- JimS Quiet. Had a major eruption sometime overnight.
3642 11 Sep 2016 @ 0636 --- JimS Sloshing. Had a minor eruption sometime overnight.
3606 06 Sep 2016 @ 0630 --- JimS Quiet. Had a major eruption sometime overnight.
3591 02 Sep 2016 @ 0612 --- JimS Quiet. Had a major eruption sometime overnight.
3583 01 Sep 2016 @ 0610 --- JimS Quiet. Had a major eruption sometime overnight.
3587 31 Aug 2016 @ 2337 --- DGInc Might've erupted. If so, then it was a major (see note by JimS @ 0610).
3573 30 Aug 2016 @ 0612 --- JimS Sloshing. Had a minor eruption sometime overnight.
3568 29 Aug 2016 @ 0607 --- JimS Quiet. Had a major eruption sometime overnight.
3570 29 Aug 2016 @ 0015 --- DGInc Might've erupted. If so, then it was a major (see note that was submitted @ 0607)
3559 28 Aug 2016 @ 0611 --- JimS Quiet. Had a major eruption sometime overnight.
3553 27 Aug 2016 @ 0607 --- JimS Quiet. Had a major eruption sometime overnight.
3543 26 Aug 2016 @ 0624 --- JimS Quiet. Had a major eruption sometime overnight.
3486 13 Aug 2016 @ 0544 --- JimS Sloshing. Had a minor eruption sometime overnight.
3444 08 Aug 2016 @ 0547 --- JimS Quiet. Had a major eruption overnight. Might have been the eruption reported late last evening.
3431 06 Aug 2016 @ 0534 --- JimS Sloshing. Had a minor eruption sometime overnight.
3382 28 Jul 2016 @ 0534 --- JimS Sloshing. Had a minor eruption overnight.
3335 21 Jul 2016 @ 0557 --- JimS Quiet. Had a major eruption sometime overnight.
3299 13 Jul 2016 @ 0504 --- JimS In steam. A major.
3233 07 Jul 2016 @ 0506 --- JimS Quiet. Had a major eruption sometime overnight.
3235 07 Jul 2016 @ 0149 --- DGInc Was ie, probably a couple of minutes after the start
3221 06 Jul 2016 @ 0601 --- JimS Quiet. Had a major eruption sometime overnight.
3162 01 Jul 2016 @ 0513 --- JimS Quiet. Had a major eruption sometime overnight.
3086 18 Jun 2016 @ 0515 --- JimS Still no major.
3076 16 Jun 2016 @ 0512 --- JimS Quiet. Had a major eruption sometime overnight.
3063 14 Jun 2016 @ 0505 --- JimS Quiet. Had major eruption sometime overnight.
3056 12 Jun 2016 @ 0505 12 Jun 2016 @ 0534 JimS Sloshing. Had a minor eruption early this morning.
3044 11 Jun 2016 @ 0504 --- JimS Quiet. Had a major eruption sometime overnight.
2999 07 Jun 2016 @ 0453 --- JimS Still sloshing. No major yet.
2988 06 Jun 2016 @ 0509 --- JimS Quiet. Had a major eruption sometime overnight.
2955 03 Jun 2016 @ 0509 --- JimS Quiet. Had a major eruption sometime overnight.
2943 02 Jun 2016 @ 0510 --- JimS Sloshing. Most recent eruption was a minor.
2923 31 May 2016 @ 0510 --- JimS Quiet. Had a major eruption sometime overnight.
2904 28 May 2016 @ 0507 --- JimS Major eruption steam phase ie at 0507, ended by the time I arrived at Castle at 0522.
2903 28 May 2016 @ 0438 --- Betty seems to be in steam phase
2899 27 May 2016 @ 0510 27 May 2016 @ 0615 JimS Quiet. Most recent eruption was a major.
2881 22 May 2016 @ 0534 --- DaveM I'm glad JimS was able to confirm that it was a major eruption that was seen on the webcam last night.
2880 22 May 2016 @ 0512 --- JimS Quiet. Had a major eruption overnight.
2879 22 May 2016 @ 0339 --- DaveM Castle had a major overnight as seen on the webcam.
2878 22 May 2016 @ 0323 --- DaveM Looks like castle started
2816 07 May 2016 @ 0526 --- Betty Castle seemed to be in steam phase when I logged on
2721 08 Apr 2016 @ 0615 --- Betty in Steam phase as I got on 0600
2717 24 Mar 2016 @ 1444 --- Betty is ie
2642 02 Jan 2016 @ 0603 --- Joethermop 0502 noticed large plume over fog Castle area, plume has lasted and is diminishing at 0606 Castle may have erupted mid 0400
2599 01 Nov 2015 @ 0900 --- WillBoekel had a major overnight
2591 31 Oct 2015 @ 0740 --- WillBoekel post major
2536 12 Oct 2015 @ 1114 --- udo Long minor-like preplay prior to eruption.
2469 04 Oct 2015 @ 0640 --- JimS Sloshing. Had a minor eruption sometime overnight.
2460 03 Oct 2015 @ 0736 --- JimS Quiet. Had a major eruption sometime overnight.
2440 30 Sep 2015 @ 0554 --- Jake quiet. majored overnight
2429 28 Sep 2015 @ 0624 --- JimS The 0542ie Castle was a major.
2426 27 Sep 2015 @ 0615 --- JimS Quiet. Had a major eruption sometime overnight..
2406 23 Sep 2015 @ 0640 --- JimS Quiet. Had a major eruption sometime overnight.
2394 21 Sep 2015 @ 0635 --- JimS Quiet. Has had a major eruption sometime overnight.
2386 20 Sep 2015 @ 0643 --- JimS Quiet. Had a major eruption sometime overnight.
2368 17 Sep 2015 @ 0640 --- JimS Quiet. Had a major eruption sometime overnight.
2363 16 Sep 2015 @ 0640 --- JimS Quiet. Most recent eruption was a major.
2311 10 Sep 2015 @ 0628 --- JimS Quiet. Had a major eruption sometime overnight.
2304 09 Sep 2015 @ 0619 --- JimS Sloshing. Had a minor eruption sometime overnight.
2295 08 Sep 2015 @ 0635 --- JimS Quiet. Had a major eruption sometime overnight.
2248 03 Sep 2015 @ 0642 --- JimS Quiet. Had a major eruption sometime overnight.
2238 02 Sep 2015 @ 0610 --- JimS Quiet. Had a major eruption sometime overnight.
2227 01 Sep 2015 @ 0650 --- JimS Has been quiet. Had a major eruption sometime overnight.
2218 30 Aug 2015 @ 0629 --- JimS Has been quiet. Had major eruption sometime overnight.
2182 24 Aug 2015 @ 0555 --- JimS Sloshing. Had a minor eruption overnight.
2178 23 Aug 2015 @ 0633 --- JimS Has been quiet. Had a major eruption sometime overnight.
2165 20 Aug 2015 @ 0624 --- JimS Quiet. Had a major eruption sometime overnight.
2159 19 Aug 2015 @ 0554 --- JimS Sloshing. Had a minor eruption sometime overnight.
2127 16 Aug 2015 @ 0545 --- JimS Sloshing. Had a minor eruption sometime overnight.
2125 15 Aug 2015 @ 0612 --- JimS Sloshing. Had a minor eruption early this morning.
2096 12 Aug 2015 @ 0606 --- JimS Quiet. Had a major eruption sometime overnight.
2084 11 Aug 2015 @ 0703 --- JimS Has been quiet. Had a major eruption sometime overnight.
2068 09 Aug 2015 @ 0647 --- JimS Has been quiet. Had a major eruption sometime overnight.
2049 08 Aug 2015 @ 0634 --- JimS Sloshing. Had a minor eruption overnight.
2006 02 Aug 2015 @ 0611 --- JimS Has been quiet so it had a major eruption sometime overnight.
1995 31 Jul 2015 @ 0534 --- JimS Sloshing. Had a minor eruption sometime overnight.
1980 27 Jul 2015 @ 0543 --- JimS Quiet. Had a major eruption sometime overnight.
1964 23 Jul 2015 @ 0517 --- JimS Had a major eruption finishing before 0515.
1953 22 Jul 2015 @ 0512 --- JimS Quiet. Had a major eruption sometime overnight.
1947 21 Jul 2015 @ 0640 --- JimS Has been quiet this morning. The 2226 eruption seen last night on the webcam must have been a major.
1922 18 Jul 2015 @ 0505 18 Jul 2015 @ 0544 JimS Quiet. Had a major eruption sometime overnight.
1919 17 Jul 2015 @ 0310 --- User34 Large, heavy splashing; may have minored
1905 14 Jul 2015 @ 0505 14 Jul 2015 @ 0629 JimS Has been quiet. Had a major eruption overnight.
1890 12 Jul 2015 @ 0548 --- JimS Very quiet. Had a major eruption sometime overnight.
1841 06 Jul 2015 @ 0501 --- JimS Very quiet. Had a major eruption overnight.
1818 30 Jun 2015 @ 0507 --- JimS Looked and sounded like it had recently finished a major eruption.
1806 28 Jun 2015 @ 0505 --- JimS Sloshing. Must have had a minor eruption overnight.
1792 25 Jun 2015 @ 0505 25 Jun 2015 @ 0608 JimS Quiet. Appears to have had a major eruption overnight.
EntrySourceLinkComment
28 Jan 2017 @ 1039 JSJ https://www.youtube.com/watch?v=eSORnt-mHN0 Video of Castle Geyser erupting (water phase) on 28 January 2017.
11 Aug 2016 @ 1358 JSJ https://www.flickr.com/photos/jsjgeology/30476239182 Thermal image (1 of 4) of Castle Geyser's 1:58 PM-onward eruption on 11 August 2016.
11 Aug 2016 @ 1358 JSJ https://www.flickr.com/photos/jsjgeology/29959320393 Photo (1 of 7) of Castle Geyser's 1:58 PM-onward eruption on 11 August 2016.
03 Jun 2016 @ 1748 JSJ https://www.flickr.com/photos/jsjgeology/29096074105 Photo (1 of 3) of Castle Geyser's 5:48 PM-onward eruption on 3 June 2016.
03 Jul 2013 @ 0711 JSJ https://www.youtube.com/watch?v=dlT_ulj6fmI Video by Micah Kipple of the 3 July 2013 morning major eruption (steam phase) of Castle Geyser.
03 Jul 2013 @ 0711 JSJ https://www.youtube.com/watch?v=UVClJ3jb52M Video by Micah Kipple of the 3 July 2013 morning major eruption (water phase) of Castle Geyser.
15 Aug 2015 @ 0957 JSJ https://www.youtube.com/watch?v=fP59M_A8la8#t=6m57s See clips # 18-31 (time stamp - 6:57) of this video compilation.
14 Aug 2015 @ 1530 JSJ https://www.youtube.com/watch?v=fP59M_A8la8#t=4m09s See clips # 11-17 (time stamps - 4:09 to 6:57) of this video compilation.
09 Aug 2015 @ 1544 JSJ https://www.youtube.com/watch?v=fP59M_A8la8 See clips # 6-10 of this video compilation.
16 Aug 2014 @ 1234 JSJ https://www.youtube.com/watch?v=fP59M_A8la8 See clips # 3-5 of this video compilation.
06 Jul 2015 @ 1256 JSJ https://www.youtube.com/watch?v=fP59M_A8la8 See clips # 1-2 of this video compilation.
28 Sep 2015 @ 0542 td http://i61.tinypic.com/2hdwbqf.jpg Castle 5:47
08 Sep 2014 @ 1201 Micah Kipple https://www.flickr.com/photos/sgplewka/15582865600 flickr
24 Sep 2014 @ 1338 Micah Kipple https://www.flickr.com/photos/126760153@N03/15642309900 flickr
17 Oct 2014 @ 1224 Micah Kipple https://www.flickr.com/photos/57621754@N08/15785065928 flickr
28 Sep 2014 @ 1458 Micah Kipple https://www.flickr.com/photos/castle_bravo/15661819608 flickr
26 Sep 2012 @ 1234 Micah Kipple https://www.flickr.com/photos/npsaficionado/15830592629 flickr
29 Aug 2011 @ 1444 Micah Kipple https://www.flickr.com/photos/128570456@N08/15922246028 flickr
16 Sep 2007 @ 1841 Micah Kipple https://www.flickr.com/photos/130216833@N06/16100193606 flickr
21 Sep 2012 @ 1842 Micah Kipple https://www.flickr.com/photos/129292470@N04/16127639365 flickr
BaselineDistance (ft)Description
Bike Path 200On the side of the bike path south of the geyser.


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