Last Known Eruption
7h 5m ago
Predicted Next Eruption
Jan 20 at 0110 ± 45 minutes

Latest Eruptions

EruptionDurationInterval
19 Jan 2017 @ 1130 ie wc maj14h 39m
18 Jan 2017 @ 2051 wc maj14h 30m
18 Jan 2017 @ 0621 wc maj16h 1m
17 Jan 2017 @ 1420 ns wc maj7h 0m
17 Jan 2017 @ 0720 wc min14h 25m
16 Jan 2017 @ 1655 maj14h 38m
16 Jan 2017 @ 0217 wc maj14h 16m
15 Jan 2017 @ 1201 ie wc maj14h 41m
14 Jan 2017 @ 2120 wc maj15h 12m
14 Jan 2017 @ 0608 ie wc maj5h 6m
14 Jan 2017 @ 0102 wc min14h 5m
13 Jan 2017 @ 1057 ie wc maj14h 18m
12 Jan 2017 @ 2039 wc maj14h 38m
12 Jan 2017 @ 0601 wc maj14h 12m
11 Jan 2017 @ 1549 majentered steam phase at 16:0414h 8m
11 Jan 2017 @ 0141 wc maj14h 21m
10 Jan 2017 @ 1120 wc maj14h 17m
09 Jan 2017 @ 2103 wc maj14h 32m
09 Jan 2017 @ 0631 E15h 1m
08 Jan 2017 @ 1530 ie maj5h 24m
08 Jan 2017 @ 1006 ie wc min1d 4h 17m
07 Jan 2017 @ 0549 E maj15h 37m
06 Jan 2017 @ 1412 ie wc maj20h 18m
05 Jan 2017 @ 1754 wc maj5h 30m
05 Jan 2017 @ 1224 ie wc min14h 24m
04 Jan 2017 @ 2200 ie wc maj4h 47m
04 Jan 2017 @ 1713 min16h 25m
04 Jan 2017 @ 0048 E18h 15m
03 Jan 2017 @ 0633 ns wc min15h 14m
02 Jan 2017 @ 1519 ie wc maj6h 23m
02 Jan 2017 @ 0856 E min1d 14h 20m
31 Dec 2016 @ 1836 wc min14h 11m
31 Dec 2016 @ 0425 wc maj13h 53m
30 Dec 2016 @ 1432 wc maj15h 57m
29 Dec 2016 @ 2235 wc maj1d 11h 28m
28 Dec 2016 @ 1107 wc14h 5m
27 Dec 2016 @ 2102 wc maj15h 6m
27 Dec 2016 @ 0556 wc maj6h 7m
26 Dec 2016 @ 2349 wc min15h 35m
26 Dec 2016 @ 0814 ie wc maj7h 44m
26 Dec 2016 @ 0030 wc min15h 32m
25 Dec 2016 @ 0858 E maj5h 33m
25 Dec 2016 @ 0325 E min2d 15h 15m
22 Dec 2016 @ 1210 wc maj13h 21m
21 Dec 2016 @ 2249 wc min14h 30m
21 Dec 2016 @ 0819 ie wc maj14h 46m
20 Dec 2016 @ 1733 wc maj14h 45m
20 Dec 2016 @ 0248 wc maj14h 59m
19 Dec 2016 @ 1149 ie wc maj14h 59m
18 Dec 2016 @ 2050 wc16h 37m
18 Dec 2016 @ 0413 wc maj11h 19m
17 Dec 2016 @ 1654 ie wc min3h 16m
17 Dec 2016 @ 1338 ns wc minjust a few mins2d 8h 11m
15 Dec 2016 @ 0527 E maj13h 58m
14 Dec 2016 @ 1529 wc maj14h 55m
14 Dec 2016 @ 0034 wc maj5h 45m
13 Dec 2016 @ 1849 ns wc min15h 1m
13 Dec 2016 @ 0348 ie wc maj8h 20m
12 Dec 2016 @ 1928 wc min13h 52m
12 Dec 2016 @ 0536 wc maj16h 1m
11 Dec 2016 @ 1335 ie wc maj9h 41m
11 Dec 2016 @ 0354 wc min6h 9m
10 Dec 2016 @ 2145 wc min1d 6h 15m
09 Dec 2016 @ 1530 wc9h 46m
09 Dec 2016 @ 0544 wc min3m 7h 12m
08 Dec 2016 @ 2232 ie wc5h 5m
08 Dec 2016 @ 1727 wc min18h 56m
07 Dec 2016 @ 2231 wc maj15h 7m
07 Dec 2016 @ 0724 wc21h 26m
06 Dec 2016 @ 0958 wc14h 18m
05 Dec 2016 @ 1940 wc maj14h 2m
05 Dec 2016 @ 0538 wc maj1d 5h 17m
04 Dec 2016 @ 0021 ? wc maj1d 11h 13m
02 Dec 2016 @ 1308 ie wc maj14h 55m
01 Dec 2016 @ 2213 wc maj4h 24m
01 Dec 2016 @ 1749 wc min13h 28m
01 Dec 2016 @ 0421 wc maj15h 5m
30 Nov 2016 @ 1316 wc maj9h 51m
30 Nov 2016 @ 0325 wc min22h 9m
29 Nov 2016 @ 0516 wc min13h 18m
28 Nov 2016 @ 1558 ie wc1d 5h 14m
27 Nov 2016 @ 1044 wc maj13h 58m
26 Nov 2016 @ 2046 wc maj13h 48m
26 Nov 2016 @ 0658 ie wc14h 50m
25 Nov 2016 @ 1608 wc maj14h 31m
25 Nov 2016 @ 0137 ie wc maj5h 57m
24 Nov 2016 @ 1940 wc min~4m 14h 13m
24 Nov 2016 @ 0527 wc maj1d 4h 25m
23 Nov 2016 @ 0102 wc maj14h 12m
22 Nov 2016 @ 1050 ns wc maj13h 42m
21 Nov 2016 @ 2108 ie wc14h 5m
21 Nov 2016 @ 0703 ie wc15h 29m
20 Nov 2016 @ 1534 ie wc maj4h 56m
20 Nov 2016 @ 1038 ie wc min1d 21h 47m
18 Nov 2016 @ 1251 ie wc17h 16m
17 Nov 2016 @ 1935 wc maj2d 52m
15 Nov 2016 @ 1843 wc maj13h 38m
15 Nov 2016 @ 0505 ie wc maj13h 53m
14 Nov 2016 @ 1512 ie wc maj13h 36m
14 Nov 2016 @ 0136 ie wc maj15h 27m

Interval Statistics

Interval Count100
Min3h 16m
Max2d 15h 15m
Mean16h 5m
Median14h 27m

Latest Notes

Note IDStart TimeEnd TimeEntrantNote
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.
1780 23 Jun 2015 @ 0515 23 Jun 2015 @ 0615 JimS Quiet. Had a major eruption sometime overnight.
1767 20 Jun 2015 @ 0627 --- JimS Sloshing. Had a minor eruption overnight.
EntrySourceLinkComment
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
21 Sep 2014 @ 1133 Micah Kipple https://www.flickr.com/photos/phill19xx/16321940306 Flickr
BaselineDistance (ft)Description
Bike Path 200On the side of the bike path south of the geyser.


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