Last Known Eruption
12h 10m ago
Predicted Next Eruption
Today at 2152 ± 45 minutes

Latest Eruptions

EruptionDurationInterval
13 Dec 2017 @ 0707 wc maj5h 35m
13 Dec 2017 @ 0132 wc min14h 1m
12 Dec 2017 @ 1131 ie wc maj8h 7m
12 Dec 2017 @ 0324 wc min13h 12m
11 Dec 2017 @ 1412 wc maj14h 54m
10 Dec 2017 @ 2318 wc maj7h 33m
10 Dec 2017 @ 1545 wc min16h 58m
09 Dec 2017 @ 2247 wc maj5h 59m
09 Dec 2017 @ 1648 wc min4h 9m
09 Dec 2017 @ 1239 wc min1d 2h 25m
08 Dec 2017 @ 1014 wc maj14h 31m
07 Dec 2017 @ 1943 wc maj6h 33m
07 Dec 2017 @ 1310 wc min~9m 13h 19m
06 Dec 2017 @ 2351 wc maj13h 14m
06 Dec 2017 @ 1037 wc maj14h 30m
05 Dec 2017 @ 2007 wc maj5h 57m
05 Dec 2017 @ 1410 wc min13h 22m
05 Dec 2017 @ 0048 wc maj13h 43m
04 Dec 2017 @ 1105 ie wc maj5h 27m
04 Dec 2017 @ 0538 wc min1d 9h 44m
02 Dec 2017 @ 1954 wc maj6h 11m
02 Dec 2017 @ 1343 ns wc min13h 4m
02 Dec 2017 @ 0039 wc maj15h 39m
01 Dec 2017 @ 0900 wc maj1d 14h 7m
29 Nov 2017 @ 1853 wc maj13h 36m
29 Nov 2017 @ 0517 wc maj13h 18m
28 Nov 2017 @ 1559 wc maj13h 5m
28 Nov 2017 @ 0254 wc maj13h 15m
27 Nov 2017 @ 1339 ns wc maj13h 26m
27 Nov 2017 @ 0013 wc maj13h 6m
26 Nov 2017 @ 1107 wc maj14h 18m
25 Nov 2017 @ 2049 wc maj5h 9m
25 Nov 2017 @ 1540 wc min13h 14m
25 Nov 2017 @ 0226 wc maj13h 25m
24 Nov 2017 @ 1301 wc maj13h 20m
23 Nov 2017 @ 2341 wc maj14h 28m
23 Nov 2017 @ 0913 wc maj11h 36m
22 Nov 2017 @ 2137 wc min±15½m7h 8m
22 Nov 2017 @ 1429 wc15h 2m
21 Nov 2017 @ 2327 wc maj12h 11m
21 Nov 2017 @ 1116 ie wc min13h 13m
20 Nov 2017 @ 2203 wc maj13h 20m
20 Nov 2017 @ 0843 wc maj13h 22m
19 Nov 2017 @ 1921 wc maj1d 3h 29m
18 Nov 2017 @ 1552 ie wc maj6h 17m
18 Nov 2017 @ 0935 ie13h 19m
17 Nov 2017 @ 2016 wc maj14h 0m
17 Nov 2017 @ 0616 wc maj16h 56m
16 Nov 2017 @ 1320 wc maj1d 2h 23m
15 Nov 2017 @ 1057 wc maj14h 5m
14 Nov 2017 @ 2052 wc maj4h 41m
14 Nov 2017 @ 1611 wc min13h 18m
14 Nov 2017 @ 0253 ie wc maj13h 14m
13 Nov 2017 @ 1339 ie wc maj13h 15m
13 Nov 2017 @ 0024 wc maj12h 59m
12 Nov 2017 @ 1125 ie wc maj13h 34m
11 Nov 2017 @ 2151 wc maj13h 39m
11 Nov 2017 @ 0812 ie13h 8m
10 Nov 2017 @ 1904 ns wc maj13h 38m
10 Nov 2017 @ 0526 wc maj13h 7m
09 Nov 2017 @ 1619 ie wc maj13h 21m
09 Nov 2017 @ 0258 wc maj15h 6m
08 Nov 2017 @ 1152 wc maj1d 5h 40m
07 Nov 2017 @ 0612 wc maj1d 2h 41m
06 Nov 2017 @ 0331 wc maj13h 20m
05 Nov 2017 @ 1411 wc maj14h 37m
05 Nov 2017 @ 0034 wc maj1d 10h 4m
03 Nov 2017 @ 1430 wc maj13h 23m
03 Nov 2017 @ 0107 wc maj13h 23m
02 Nov 2017 @ 1144 wc maj13h 14m
01 Nov 2017 @ 2230 wc maj13h 45m
01 Nov 2017 @ 0845 wc maj13h 18m
31 Oct 2017 @ 1927 wc maj13h 3m
31 Oct 2017 @ 0624 wc maj13h 13m
30 Oct 2017 @ 1711 wc maj13h 15m
30 Oct 2017 @ 0356 wc maj13h 18m
29 Oct 2017 @ 1438 wc maj14h 7m
29 Oct 2017 @ 0031 wc maj4h 13m
28 Oct 2017 @ 2018 wc min3m 14h 6m
28 Oct 2017 @ 0612 wc maj8h 18m
27 Oct 2017 @ 2154 wc min3h 43m
27 Oct 2017 @ 1811 E min12h 52m
27 Oct 2017 @ 0519 wc maj13h 31m
26 Oct 2017 @ 1548 maj13h 32m
26 Oct 2017 @ 0216 E maj15h 23m
25 Oct 2017 @ 1053 wc maj9h 22m
25 Oct 2017 @ 0131 wc min5h 24m
24 Oct 2017 @ 2007 wc min13h 50m
24 Oct 2017 @ 0617 wc maj4h 42m
24 Oct 2017 @ 0135 wc min14h 22m
23 Oct 2017 @ 1113 ie maj6h 27m
23 Oct 2017 @ 0446 wc min±5m13h 29m
22 Oct 2017 @ 1517 wc maj13h 23m
22 Oct 2017 @ 0154 wc maj13h 31m
21 Oct 2017 @ 1223 maj13h 28m
20 Oct 2017 @ 2255 wc maj13h 41m
20 Oct 2017 @ 0914 wc maj13h 1m
19 Oct 2017 @ 2013 wc maj13h 10m
19 Oct 2017 @ 0703 ns wc maj13h 32m
18 Oct 2017 @ 1731 wc maj13h 39m

Interval Statistics

Interval Count100
Min3h 43m
Max1d 14h 7m
Mean13h 28m
Median13h 20m

Latest Notes

Note IDStart TimeEnd TimeEntrantNote
7701 10 Oct 2017 @ 1516 --- JSJ Castle off-camera, but patches of billowing steam consistent with an eruption first visible on web camera at 1516.
7532 29 Sep 2017 @ 0741 --- JimS Sloshing. Probably Had a minor eruption overnight.
7444 27 Sep 2017 @ 0903 --- JimS Sloshing. Had a second minor eruption overnight.
7258 25 Sep 2017 @ 0700 --- JimS Quiet. Had a major eruption overnight.
7027 23 Sep 2017 @ 0738 --- JimS Sloshing. Had a minor eruption overnight.
6749 18 Sep 2017 @ 0730 --- JimS Quiet. Had a major eruption overnight.
6628 17 Sep 2017 @ 0726 --- JimS Sloshing. Had a minor eruption overnight.
6364 14 Sep 2017 @ 0657 --- JimS Quiet. Had a major eruption overnight.
6271 11 Sep 2017 @ 0649 --- JimS Sloshing. Had a minor eruption overnight.
6263 10 Sep 2017 @ 1422 --- Betty Seems to be ie, but Castle is out of webcam view and only drifting steam is visible
5798 05 Sep 2017 @ 0631 --- JimS Quiet. Had a major eruption overnight.
5667 03 Sep 2017 @ 0804 --- JimS Sloshing. Had a minor eruption.
5568 02 Sep 2017 @ 0628 --- JimS Quiet. Had a major eruption overnight.
5398 26 Aug 2017 @ 0745 --- JimS Sloshing. Had a minor eruption.
5316 25 Aug 2017 @ 0625 --- JimS Quiet. Had a major eruption overnight.
5308 24 Aug 2017 @ 1446 --- LotusBaker castle is a major
5298 24 Aug 2017 @ 0600 --- JimS Quiet. Had a major eruption overnight.
5275 23 Aug 2017 @ 0610 23 Aug 2017 @ 0630 JimS Sloshing. Had a minor eruption early this morning.
5196 22 Aug 2017 @ 0616 --- JimS Quiet. Had a major eruption overnight.
4887 14 Aug 2017 @ 0640 --- JimS Quiet. Had a major eruption overnight.
4810 06 Aug 2017 @ 0553 --- JimS Quiet. Had a major eruption overnight.
4802 05 Aug 2017 @ 0600 --- JimS Quiet. Had a major eruption overnight.
4778 04 Aug 2017 @ 0616 --- AndrewW Sloshing, minored overnight
4779 04 Aug 2017 @ 0616 --- JimS Sloshing. Had a minor eruption overnight.
4753 03 Aug 2017 @ 0554 --- JimS Sloshing. overnight eruption was a minor.
4590 01 Aug 2017 @ 0711 --- JimS Apparently had a minor eruption early this morning.
4587 31 Jul 2017 @ 0831 --- AndrewW Sloshing, castle minored overnight
4532 25 Jul 2017 @ 0755 --- AndrewW Quiet, majored overnight
4520 24 Jul 2017 @ 0630 --- JimS Quiet. Had a major eruption overnight.
4507 20 Jul 2017 @ 0527 --- JimS Quiet. Had a major eruption overnight after the minor yesterday evening.
4475 17 Jul 2017 @ 0638 --- SteveO minor overninght
4471 16 Jul 2017 @ 0532 --- JimS Quiet. Had a major eruption overnight.
4465 15 Jul 2017 @ 0517 --- JimS Quiet. Had a major eruption sometime overnight.
4442 11 Jul 2017 @ 0632 --- JimS Quiet. Had a major eruption overnight.
4433 10 Jul 2017 @ 1441 --- udo Prediction from 724Victor = 1530 +/-45
4431 10 Jul 2017 @ 0630 --- JimS Quiet. Had a major eruption sometime overnight.
4407 05 Jul 2017 @ 0622 --- JimS Quiet. Had a major eruption sometime overnight.
4404 04 Jul 2017 @ 0550 --- JimS Sloshing. Had a minor eruption overnight.
4366 27 Jun 2017 @ 0524 --- JimS Quiet. Had a major eruption overnight.
4316 15 Jun 2017 @ 0625 --- B**2 Castle is in steam phase of eruption.
4187 03 Jun 2017 @ 0618 --- JimS Quiet. Had a major eruption sometime overnight.
4173 02 Jun 2017 @ 0655 02 Jun 2017 @ 0710 JimS Sloshing. Had a minor eruption sometime overnight.
4162 01 Jun 2017 @ 0612 --- JimS Quiet. Had a major eruption sometime overnight.
4155 31 May 2017 @ 0554 --- JimS Sloshing. Had a minor eruption sometime overnight.
4137 27 May 2017 @ 0620 --- SteveO Castle in very late steam phase, roaring and no water.
4116 23 May 2017 @ 0515 --- SteveO Major overnight, still a little forced steam.
4113 22 May 2017 @ 0630 --- JimS Appears to have had a minor eruption sometime overnight.
4097 16 May 2017 @ 0541 --- JimS Sloshing. No major eruption yet.
4094 14 May 2017 @ 0612 --- JimS Quiet. Had a major eruption sometime overnight.
4040 05 May 2017 @ 0545 --- JimS Quiet. Most recent eruption was a major
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.
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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