Last Known Eruption
11h 48m ago
Predicted Next Eruption
Today at 2139 ± 45 minutes

Latest Eruptions

EruptionDurationInterval
22 Jun 2017 @ 0754 maj13h 23m
21 Jun 2017 @ 1831 maj13h 50m
21 Jun 2017 @ 0441 wc maj13h 29m
20 Jun 2017 @ 1512 maj13h 43m
20 Jun 2017 @ 0129 wc maj13h 36m
19 Jun 2017 @ 1153 maj13h 24m
18 Jun 2017 @ 2229 wc maj13h 40m
18 Jun 2017 @ 0849 maj14h 25m
17 Jun 2017 @ 1824 maj6h 46m
17 Jun 2017 @ 1138 min13h 8m
16 Jun 2017 @ 2230 wc maj13h 31m
16 Jun 2017 @ 0859 maj13h 11m
15 Jun 2017 @ 1948 maj13h 40m
15 Jun 2017 @ 0608 wc maj13h 55m
14 Jun 2017 @ 1613 wc maj13h 23m
14 Jun 2017 @ 0250 wc maj13h 33m
13 Jun 2017 @ 1317 maj13h 30m
12 Jun 2017 @ 2347 wc maj14h 13m
12 Jun 2017 @ 0934 wc maj13h 28m
11 Jun 2017 @ 2006 wc maj13h 27m
11 Jun 2017 @ 0639 maj13h 34m
10 Jun 2017 @ 1705 maj13h 37m
10 Jun 2017 @ 0328 wc maj13h 38m
09 Jun 2017 @ 1350 maj14h 21m
08 Jun 2017 @ 2329 wc maj6h 33m
08 Jun 2017 @ 1656 min14h 32m
08 Jun 2017 @ 0224 wc maj4h 27m
07 Jun 2017 @ 2157 wc min13h 24m
07 Jun 2017 @ 0833 maj14h 36m
06 Jun 2017 @ 1757 wc maj5h 54m
06 Jun 2017 @ 1203 min13h 21m
05 Jun 2017 @ 2242 wc maj13h 47m
05 Jun 2017 @ 0855 maj13h 41m
04 Jun 2017 @ 1914 wc maj13h 51m
04 Jun 2017 @ 0523 wc maj13h 47m
03 Jun 2017 @ 1536 maj13h 54m
03 Jun 2017 @ 0142 wc maj14h 42m
02 Jun 2017 @ 1100 maj5h 21m
02 Jun 2017 @ 0539 wc min13h 28m
01 Jun 2017 @ 1611 maj13h 35m
01 Jun 2017 @ 0236 wc maj16h 0m
31 May 2017 @ 1036 maj1d 4h 11m
30 May 2017 @ 0625 wc maj14h 53m
29 May 2017 @ 1532 wc maj5h 10m
29 May 2017 @ 1022 min14h 37m
28 May 2017 @ 1945 wc maj9h 36m
28 May 2017 @ 1009 min13h 54m
27 May 2017 @ 2015 wc maj14h 46m
27 May 2017 @ 0529 E maj3h 59m
27 May 2017 @ 0130 E min14h 50m
26 May 2017 @ 1040 maj9h 17m
26 May 2017 @ 0123 wc min13h 39m
25 May 2017 @ 1144 maj13h 51m
24 May 2017 @ 2153 wc maj14h 23m
24 May 2017 @ 0730 maj13h 44m
23 May 2017 @ 1746 maj13h 30m
23 May 2017 @ 0416 wc maj15h 2m
22 May 2017 @ 1314 ie maj8h 49m
22 May 2017 @ 0425 wc min14h 12m
21 May 2017 @ 1413 maj13h 59m
21 May 2017 @ 0014 wc maj14h 0m
20 May 2017 @ 1014 maj14h 5m
19 May 2017 @ 2009 maj13h 32m
19 May 2017 @ 0637 maj14h 6m
18 May 2017 @ 1631 wc maj13h 26m
18 May 2017 @ 0305 E14h 1m
17 May 2017 @ 1304 wc maj13h 45m
16 May 2017 @ 2319 wc maj15h 8m
16 May 2017 @ 0811 wc maj14h 40m
15 May 2017 @ 1731 ? ns wc min13h 56m
15 May 2017 @ 0335 wc maj13h 54m
14 May 2017 @ 1341 maj13h 58m
13 May 2017 @ 2343 wc maj14h 17m
13 May 2017 @ 0926 wc maj13h 53m
12 May 2017 @ 1933 wc maj13h 33m
12 May 2017 @ 0600 ie maj14h 2m
11 May 2017 @ 1558 maj13h 50m
11 May 2017 @ 0208 wc maj14h 4m
10 May 2017 @ 1204 ns maj14h 28m
09 May 2017 @ 2136 wc maj13h 58m
09 May 2017 @ 0738 maj13h 46m
08 May 2017 @ 1752 maj14h 8m
08 May 2017 @ 0344 ie wc maj15h 0m
07 May 2017 @ 1244 wc maj3h 22m
07 May 2017 @ 0922 wc min13h 40m
06 May 2017 @ 1942 maj13h 54m
06 May 2017 @ 0548 maj13h 55m
05 May 2017 @ 1553 ie wc maj15h 10m
05 May 2017 @ 0043 wc maj17h 43m
04 May 2017 @ 0700 wc min~5m 15h 2m
03 May 2017 @ 1558 maj6h 51m
03 May 2017 @ 0907 ns wc min13h 49m
02 May 2017 @ 1918 maj14h 0m
02 May 2017 @ 0518 wc maj13h 42m
01 May 2017 @ 1536 ie wc14h 4m
01 May 2017 @ 0132 wc maj13h 56m
30 Apr 2017 @ 1136 ie wc maj14h 9m
29 Apr 2017 @ 2127 wc maj14h 34m
29 Apr 2017 @ 0653 maj7h 44m
28 Apr 2017 @ 2309 wc min14h 24m

Interval Statistics

Interval Count100
Min3h 22m
Max1d 4h 11m
Mean13h 11m
Median13h 50m

Latest Notes

Note IDStart TimeEnd TimeEntrantNote
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.
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.
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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