Last Known Eruption
8h 35m ago
Predicted Next Eruption
Today at 1542 ± 45 minutes

Latest Eruptions

Eruption DurationInterval
11 Dec 2018 @ 0157 wc maj1d 4h 40m
09 Dec 2018 @ 2117 wc maj14h 49m
09 Dec 2018 @ 0628 wc maj8h 53m
08 Dec 2018 @ 2135 wc min13h 40m
08 Dec 2018 @ 0755 wc maj14h 10m
07 Dec 2018 @ 1745 wc maj14h 52m
07 Dec 2018 @ 0253 wc maj22h 29m
06 Dec 2018 @ 0424 wc maj13h 42m
05 Dec 2018 @ 1442 wc maj1d 3h 28m
04 Dec 2018 @ 1114 ie wc maj13h 58m
03 Dec 2018 @ 2116 wc maj13h 20m
03 Dec 2018 @ 0756 wc maj13h 23m
02 Dec 2018 @ 1833 ie wc maj14h 52m
02 Dec 2018 @ 0341 wc maj5h 37m
01 Dec 2018 @ 2204 wc min13h 21m
01 Dec 2018 @ 0843 wc maj13h 39m
30 Nov 2018 @ 1904 wc maj13h 32m
30 Nov 2018 @ 0532 ie wc majin progress13h 39m
29 Nov 2018 @ 1553 wc maj13h 28m
29 Nov 2018 @ 0225 wc maj13h 24m
28 Nov 2018 @ 1301 ie wc maj2d 3h 32m
26 Nov 2018 @ 0929 wc maj13h 39m
25 Nov 2018 @ 1950 wc maj13h 38m
25 Nov 2018 @ 0612 wc maj13h 34m
24 Nov 2018 @ 1638 wc maj1d 2h 33m
23 Nov 2018 @ 1405 ie wc maj12h 14m
23 Nov 2018 @ 0151 ? ie wc maj15h 0m
22 Nov 2018 @ 1051 wc maj14h 16m
21 Nov 2018 @ 2035 wc maj12h 0m
21 Nov 2018 @ 0835 wc maj3h 25m
21 Nov 2018 @ 0510 wc min12h 54m
20 Nov 2018 @ 1616 wc maj13h 23m
20 Nov 2018 @ 0253 wc maj14h 26m
19 Nov 2018 @ 1227 wc maj17h 53m
18 Nov 2018 @ 1834 wc maj1d 3h 7m
17 Nov 2018 @ 1527 wc maj13h 31m
17 Nov 2018 @ 0156 wc maj13h 33m
16 Nov 2018 @ 1223 wc maj13h 34m
15 Nov 2018 @ 2249 wc maj13h 28m
15 Nov 2018 @ 0921 wc maj1d 12h 26m
13 Nov 2018 @ 2055 wc min14h 38m
13 Nov 2018 @ 0617 wc maj6h 17m
13 Nov 2018 @ 0000 wc min5h 46m
12 Nov 2018 @ 1814 wc min15h 10m
12 Nov 2018 @ 0304 wc maj1d 17h 42m
10 Nov 2018 @ 0922 wc maj14h 1m
09 Nov 2018 @ 1921 wc maj5h 56m
09 Nov 2018 @ 1325 wc min13h 45m
08 Nov 2018 @ 2340 wc maj5h 27m
08 Nov 2018 @ 1813 wc min13h 57m
08 Nov 2018 @ 0416 wc maj5h 39m
07 Nov 2018 @ 2237 wc min14h 51m
07 Nov 2018 @ 0746 ie wc maj8h 56m
06 Nov 2018 @ 2250 wc min14h 22m
06 Nov 2018 @ 0828 wc maj4h 44m
06 Nov 2018 @ 0344 wc min12h 56m
05 Nov 2018 @ 1448 ie maj13h 55m
05 Nov 2018 @ 0053 ie wc maj5h 25m
04 Nov 2018 @ 1928 wc min12h 51m
04 Nov 2018 @ 0637 wc maj13h 6m
03 Nov 2018 @ 1831 maj14h 17m
03 Nov 2018 @ 0414 wc maj21h 57m
02 Nov 2018 @ 0617 wc maj13h 33m
01 Nov 2018 @ 1644 wc maj9h 6m
01 Nov 2018 @ 0738 ns wc min4h 12m
01 Nov 2018 @ 0326 E min13h 24m
31 Oct 2018 @ 1402 maj14h 27m
30 Oct 2018 @ 2335 wc maj7h 49m
30 Oct 2018 @ 1546 wc min15h 2m
30 Oct 2018 @ 0044 wc maj6h 30m
29 Oct 2018 @ 1814 wc min13h 12m
29 Oct 2018 @ 0502 wc maj13h 47m
28 Oct 2018 @ 151514h 23m
28 Oct 2018 @ 0052 wc maj7h 54m
27 Oct 2018 @ 1658 wc min13h 4m
27 Oct 2018 @ 0354 wc maj13h 10m
26 Oct 2018 @ 1444 wc maj13h 24m
26 Oct 2018 @ 0120 wc maj14h 33m
25 Oct 2018 @ 1047 ie wc maj6h 22m
25 Oct 2018 @ 0425 ? wc min12h 39m
24 Oct 2018 @ 1546 ie wc maj13h 34m
24 Oct 2018 @ 0212 wc maj14h 23m
23 Oct 2018 @ 1149 ie wc maj8h 22m
23 Oct 2018 @ 0327 wc min12h 55m
22 Oct 2018 @ 1432 wc maj13h 7m
22 Oct 2018 @ 0125 wc maj13h 28m
21 Oct 2018 @ 1157 maj12h 58m
20 Oct 2018 @ 2259 wc maj13h 18m
20 Oct 2018 @ 0941 maj13h 8m
19 Oct 2018 @ 2033 wc maj13h 0m
19 Oct 2018 @ 0733 ie wc maj13h 37m
18 Oct 2018 @ 1756 wc maj13h 9m
18 Oct 2018 @ 0447 wc maj12h 45m
17 Oct 2018 @ 1602 ie wc maj9h 29m
17 Oct 2018 @ 0633 ? ie wc min1d 59m
16 Oct 2018 @ 0534 wc maj6h 52m
15 Oct 2018 @ 2242 wc min~7m 13h 1m
15 Oct 2018 @ 0941 ie maj13h 29m
14 Oct 2018 @ 2012 wc maj13h 30m
14 Oct 2018 @ 0642 wc maj13h 32m

Interval Statistics

Interval Count100
Min3h 25m
Max2d 3h 32m
Mean14h 1m
Median13h 29m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
10759 02 Dec 2018 @ 0341 --- JSJ GOSA playback shows a Castle eruption at 0341 with a more slender steam column than the 2204 eruption. Steam column present to about 0430 at least, when visibility was lost.
10696 01 Nov 2018 @ 1115 --- mhvogel According to the electronic download castle had a minor @ 0326. I didn't see any other eruptions from castle on the download after that time.
10322 21 Sep 2018 @ 1317 --- Minafuku Castle doing lots of high splashes for being only halfway through its cycle. Apparently has been for awhile already.
10264 16 Sep 2018 @ 1804 --- STS New NPS prediction of 0515 on September 17
9866 25 Aug 2018 @ 0758 --- Minafuku Quiet. Major overnight.
9268 22 Jul 2018 @ 0553 --- JimS Sloshing. Overnight eruption was a minor.
8413 02 Jun 2018 @ 1237 --- DaveM Duration was 4 minutes. Geysertimes chose a less complete entry submitted 7 minutes after the eruption over a webcam entry. I find the bias of the software disturbing. A more complete entry should be listed as primary whether is is submitted immediately or much later or if it is seen in person or on the webcam.
8235 19 May 2018 @ 0934 --- JimS Sloshing vigorously. Had a minor overnight.
8044 29 Apr 2018 @ 2134 --- Micah Kipple beginning to transition into steam
7963 31 Mar 2018 @ 2218 --- Pat Snyder Might have minored. IE at 2211, off by 2217. I didn't see the start, though.
7878 27 Jan 2018 @ 1400 --- Graham Not in steam phase. must have had a minor. No eruption seen during my wait for Grand.
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 --- EmilyW Sloshing, minored 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 --- EmilyW Sloshing, castle minored overnight
4532 25 Jul 2017 @ 0755 --- EmilyW 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.
4097 16 May 2017 @ 0541 --- JimS Sloshing. No major eruption yet.
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
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.
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.
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.
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.
2880 22 May 2016 @ 0512 --- JimS Quiet. Had a major eruption overnight.
2816 07 May 2016 @ 0526 --- Betty Castle seemed to be in steam phase when I logged on
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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