Castle Geyser

Last Known Eruption
17h 20m ago

Latest Eruptions

Eruption DurationInterval
09 Dec 2023 @ 1351 min3d 1h 53m
06 Dec 2023 @ 1158 ie wc maj1d 9h 50m
05 Dec 2023 @ 0208 wc maj16h 52m
04 Dec 2023 @ 0916 wc maj16h 43m
03 Dec 2023 @ 1633 ie wc maj16h 40m
02 Dec 2023 @ 2353 wc maj18h 8m
02 Dec 2023 @ 0545 wc maj4h 41m
02 Dec 2023 @ 0104 wc min16h 27m
01 Dec 2023 @ 0837 ie wc maj16h 53m
30 Nov 2023 @ 1544 wc maj16h 28m
29 Nov 2023 @ 2316 wc maj17h 51m
29 Nov 2023 @ 0525 wc maj6h 40m
28 Nov 2023 @ 2245 ns wc min16h 2m
28 Nov 2023 @ 0643 ie wc maj17h 16m
27 Nov 2023 @ 1327 wc maj16h 39m
26 Nov 2023 @ 2048 wc maj18h 19m
26 Nov 2023 @ 0229 ? wc1d 19h 56m
24 Nov 2023 @ 0633 ie wc maj1d 12h 0m
22 Nov 2023 @ 1833 wc maj22h 0m
21 Nov 2023 @ 2033 wc min1d 9h 0m
20 Nov 2023 @ 1133 ie wc maj21h 12m
19 Nov 2023 @ 1421 wc maj2d 6h 42m
17 Nov 2023 @ 0739 ie wc maj17h 6m
16 Nov 2023 @ 1433 ie wc maj6h 23m
16 Nov 2023 @ 0810 wc min5m 15h 8m
15 Nov 2023 @ 1702 ie wc maj2d 2h 8m
13 Nov 2023 @ 1454 wc maj1d 8h 1m
12 Nov 2023 @ 0653 wc maj16h 5m
11 Nov 2023 @ 1448 ie wc maj1d 8h 25m
10 Nov 2023 @ 0623 ie wc maj16h 10m
09 Nov 2023 @ 1413 ie wc maj2d 1h 9m
07 Nov 2023 @ 1304 ns wc maj1d 6h 1m
06 Nov 2023 @ 0703 ie wc min15h 53m
05 Nov 2023 @ 1510 wc maj2d 6h 4m
03 Nov 2023 @ 1006 ie wc maj5h 58m
03 Nov 2023 @ 0408 ? wc min18h 8m
02 Nov 2023 @ 1000 wc maj21h 25m
01 Nov 2023 @ 1235 wc min2m 22h 20m
31 Oct 2023 @ 1415 ie maj4h 42m
31 Oct 2023 @ 0933 min17h 17m
30 Oct 2023 @ 1616 maj6h 26m
30 Oct 2023 @ 0950 wc min16h 15m
29 Oct 2023 @ 1735 maj16m 18h 44m
28 Oct 2023 @ 2251 wc maj1d 14h 37m
27 Oct 2023 @ 0814 wc maj5h 59m
27 Oct 2023 @ 0215 wc min15h 43m
26 Oct 2023 @ 1032 ie wc maj15h 46m
25 Oct 2023 @ 1846 ie wc maj1d 8h 0m
24 Oct 2023 @ 1046 maj16h 56m
23 Oct 2023 @ 1750 ns maj5h 16m
23 Oct 2023 @ 1234 min16h 36m
22 Oct 2023 @ 1958 wc maj9h 29m
22 Oct 2023 @ 1029 ie wc min19h 7m
21 Oct 2023 @ 1522 maj1d 8h 5m
20 Oct 2023 @ 0717 wc maj19h 3m
19 Oct 2023 @ 1214 ie maj21h 24m
18 Oct 2023 @ 1450 ie maj4h 45m
18 Oct 2023 @ 1005 min15h 30m
17 Oct 2023 @ 1835 wc maj1d 8h 45m
16 Oct 2023 @ 0950 min415h 51m
15 Oct 2023 @ 1759 maj16m 17h 59m
15 Oct 2023 @ 0000 A maj5h 6m
14 Oct 2023 @ 1854 min1d 8h 37m
13 Oct 2023 @ 1017 min4m 20h 6m
12 Oct 2023 @ 1411 ie wc maj1d 7h 15m
11 Oct 2023 @ 0656 ie wc maj16h 43m
10 Oct 2023 @ 1413 maj16h 18m
09 Oct 2023 @ 2155 ie maj4h 0m
09 Oct 2023 @ 1755 wc min~1m 22s 1d 7h 24m
08 Oct 2023 @ 1031 wc min18h 4m
07 Oct 2023 @ 1627 ns maj1d 9h 30m
06 Oct 2023 @ 0657 ie maj16h 0m
05 Oct 2023 @ 1457 wc maj15h 57m
04 Oct 2023 @ 2300 ie wc maj16h 8m
04 Oct 2023 @ 0652 wc maj16h 3m
03 Oct 2023 @ 1449 maj23h 35m
02 Oct 2023 @ 1514 min15h 30m
01 Oct 2023 @ 2344 wc maj16h 19m
01 Oct 2023 @ 0725 ie maj15h 44m
30 Sep 2023 @ 1541 maj15h 37m
30 Sep 2023 @ 0004 ns wc maj15h 45m
29 Sep 2023 @ 081915h 32m
28 Sep 2023 @ 1647 maj21h 25m
27 Sep 2023 @ 1922 wc min~4m 15h 24m
27 Sep 2023 @ 0358 wc maj16h 35m
26 Sep 2023 @ 1123 maj17h 18m
25 Sep 2023 @ 1805 ns maj8h 57m
25 Sep 2023 @ 0908 min17h 48m
24 Sep 2023 @ 1520 ns maj1d 3h 19m
23 Sep 2023 @ 1200:20 maj17h 39m
22 Sep 2023 @ 1821 ie wc maj1d 11h 56m
21 Sep 2023 @ 0625 A wc22h 16m
20 Sep 2023 @ 0809 maj16h 0m
19 Sep 2023 @ 1609 maj1d 7h 53m
18 Sep 2023 @ 0816 maj16h 7m
17 Sep 2023 @ 1609 maj17h 8m
16 Sep 2023 @ 2301 ns maj1d 11h 9m
15 Sep 2023 @ 1152 min12m 15h 59m
14 Sep 2023 @ 1953 maj1d 7h 45m
13 Sep 2023 @ 1208 maj16h 3m

Interval Statistics

Interval Count100
Min4h 0m
Max3d 1h 53m
Mean21h 4m
Median17h 1m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
28527 28 Sep 2023 @ 0830 --- User34 Huffing steam, one steamy splash, appears to have majored overnight
28440 24 Sep 2023 @ 1230 --- MikeG (wc) Looks like it had a minor overnight and is in sloppy phase.
28416 22 Sep 2023 @ 1640 --- jonp (WC) Appears to be in post-minor splashing mode
28229 12 Sep 2023 @ 0730 --- Ben VL Has had a major since last night's minor.
27513 11 Aug 2023 @ 0558 --- JimS Steaming quietly, had a major eruption overnight after the minor
27471 09 Aug 2023 @ 0609 --- JimS Steaming quietly. Had a major eruption overnight
27206 25 Jul 2023 @ 0600 --- JimS Sloshing. Boardwalk wet. Had a minor eruption
27079 16 Jul 2023 @ 0544 --- JimS Still sloshing. No major yet
27015 12 Jul 2023 @ 0530 --- JimS Steaming quietly. Had a major eruption overnight.
26954 09 Jul 2023 @ 0543 --- JimS Still sloshing. No major yet.
26781 02 Jul 2023 @ 0535 --- JimS Quietly steaming. Last eruption was a major
26757 01 Jul 2023 @ 0530 --- JimS Steaming quietly. Had a major eruption overnight
26688 27 Jun 2023 @ 0529 --- JimS Still trying to recover from overnight minor
26674 26 Jun 2023 @ 0538 --- JimS Must have had a minor overnight before the 0515 major
26389 17 Jun 2023 @ 0534 --- JimS Steaming quietly. Had a major eruption overnight
26350 16 Jun 2023 @ 0538 --- JimS Steaming quietly. Had a major eruption overnight.
26326 15 Jun 2023 @ 0538 --- JimS Sloshing. Had a minor eruption overnight.
26251 12 Jun 2023 @ 0530 --- JimS Quiet. Overnight eruption was a major.
26204 10 Jun 2023 @ 0555 --- JimS Steaming quietly. Overnight eruption was a major
25406 14 May 2023 @ 0610 --- User34 Still post-minor
25242 25 Apr 2023 @ 0839 --- Colin_W Looking like the last eruption was a minor.
25068 03 Mar 2023 @ 1426 --- Colin_W looks like it did a minor
25067 03 Mar 2023 @ 1044 --- ltgangi castle water could be seen just above tree line several times and then it died.down.
25031 23 Feb 2023 @ 0432 --- JarnoO possible start time of an eruption - frequently obscured by steam from elsewhere (primarily MYR) and darkness didn't help
24432 16 Oct 2022 @ 1800 --- Ben VL Almost no splashing seen in quite a while. I think either the 0316E was actually a major, or it has had one since.
24391 15 Oct 2022 @ 1136 --- Ben VL Castle back on after 5m of quiet. Done again @ 1139. See the 1127 entry for details.
23471 29 Aug 2022 @ 0615 --- JimS Sloshing. Had a minor eruption overnight.
23454 28 Aug 2022 @ 0618 --- JimS Sloshing. Had a minor eruption overnight.
23406 26 Aug 2022 @ 0615 --- JimS Steaming quietly. Had a major eruption overnight.
23380 24 Aug 2022 @ 0611 --- JimS Sloshing. Last eruption was a minor.
23342 22 Aug 2022 @ 0616 --- JimS Sloshing. Last eruption was a minor.
23308 21 Aug 2022 @ 0615 --- JimS Steaming quietly. Apparently had a major eruption overnight.
23222 17 Aug 2022 @ 0605 --- JimS Steaming quietly. Appears to have had a major eruption.
23110 09 Aug 2022 @ 0703 --- JimS Has been sloshing the last hour. Had a minor eruption overnight.
23095 08 Aug 2022 @ 0556 --- JimS Sloshing. Still trying to recover from minors.
23085 07 Aug 2022 @ 0621 --- JimS Has been steaming quietly. Had a major eruption overnight.
23067 06 Aug 2022 @ 0559 --- JimS Quiet. Had a major eruption overnight.
23022 04 Aug 2022 @ 0607 --- JimS Sloshing. Had a minor eruption overnight.
22970 02 Aug 2022 @ 0528 --- JimS Steaming gently, boardwalk soaked. Had a major eruption overnight.
22901 28 Jul 2022 @ 0540 --- JimS Steaming quietly, boardwalk soaked. Had a major eruption.
22872 27 Jul 2022 @ 0545 --- JimS Still sloshing. Has not yet had a major eruption.
22823 24 Jul 2022 @ 0543 --- JimS Splashing heavily. Had a minor eruption overnight.
22798 23 Jul 2022 @ 0534 --- JimS Splashing heavily. Trying to recover from a minor eruption. May have had a second minor overnight
22802 22 Jul 2022 @ 1934 --- DinosaursArentReal tourist showed me a video of castle erupting about 5 ft. video was timestamped from 1934-1939
22753 21 Jul 2022 @ 0547 --- JimS Quiet. Boardwalk soaked. Had a major eruption overnight.
22584 15 Jul 2022 @ 0535 --- JimS Was a major eruption.
22372 07 Jul 2022 @ 0524 --- JimS Steaming quietly. Had a major eruption overnight.
22348 06 Jul 2022 @ 0551 --- JimS Still trying to recover from a minor eruption. Splashing heavily.
22334 05 Jul 2022 @ 0514 --- JimS Quiet steaming. Had a major eruption overnight.
22278 02 Jul 2022 @ 0535 --- JimS Splashing frequently. Had a minor eruption overnight.
22254 01 Jul 2022 @ 0700 --- User34 Large heavy splashes, based on current interval it appears to have minored overnight
22194 29 Jun 2022 @ 0656 --- JimS Castle has been quiet indicating that its overnight eruption was a major
22136 26 Jun 2022 @ 1428 --- DaveM Major erption
21990 16 Jun 2022 @ 0630 --- RMichaels Castle is lightly billowing steam. It probably had a major sometime overnight.
21912 11 Jun 2022 @ 0800 --- Colin_W splashing on cone.
21150 02 May 2022 @ 0915 --- aferrara Heavy, tall splashing.
21134 30 Apr 2022 @ 1300 30 Apr 2022 @ 1630 User34 Splashing heavily
21077 25 Apr 2022 @ 0605 --- RMichaels Quiet. Castle appears to have had a major overnight.
20943 05 Apr 2022 @ 1326 --- Kevin L Castle was not erupting when I switched to Lion ie at 1238. I did a quick check before I switched to OF and Castle looked ie.
20764 29 Jan 2022 @ 0830 --- aferrara Castle is quietly steaming with rare, short splashes. No eruptions on the logger since 1447 yesterday.
20762 28 Jan 2022 @ 0000 --- aferrara Logger shows no eruption overnight.
20646 07 Jan 2022 @ 0900 --- aferrara Billowing steam with frequent splashing (5-15' or so over the top of the cone). Logger is having trouble reading majors vs minors right now, but I believe Art-P's major observation via the webcam. Castle looks remarkably like it did post-major in late June 2021, when its intervals became long and irregular.
20282 03 Nov 2021 @ 0822 --- DaveM Looking at the webcam capture, this was a minor.
20182 29 Oct 2021 @ 0835 --- aferrara Castle erupted 2258E last night. Graph looks like a long minor but in the basin it looks like it majored overnight (billowing steam, no splashing or spritzing). Probably a major, but unclear.
19552 14 Sep 2021 @ 0025 --- Suzanne heard in steam phase from the boardwalk near Tardy
19549 13 Sep 2021 @ 1900 13 Sep 2021 @ 2115 William good splashing but no eruption during this time.
19503 12 Sep 2021 @ 0635 --- William in steam. had a major overnight.
19313 05 Sep 2021 @ 0805 --- Kitt B Appears to haveminored. Heavy splashing seen.
18428 15 Jul 2021 @ 0550 --- SteveO Had a major overnight, billowing steam and boardwalk is wet.
18412 14 Jul 2021 @ 0540 --- RMichaels Billowing steam as if it had a major eruption very early this morning.
18252 03 Jul 2021 @ 0543 --- JimS Quiet. Boardwalk soaked. Had a major eruption overnight.
18235 02 Jul 2021 @ 0530 --- JimS Quiet. Had a major eruption overnight.
18195 30 Jun 2021 @ 0532 --- JimS Quiet. Boardwalk soaked. Had major eruption overnight.
17967 21 Jun 2021 @ 1648 --- Graham VEC is now officially not predicting Castle. Recent intervals suggest 19 to 22h intervals without minors. Longer intervals started ~16th.
17842 16 Jun 2021 @ 0542 --- JimS May have also had a minor a few hours earlier since 17 hour interval is so large to this eruption.
17760 14 Jun 2021 @ 0541 --- JimS Sloshing. Overnight eruption was another minor.
17648 11 Jun 2021 @ 0557 --- JimS Quiet. Had a major eruption overnight.
17465 04 Jun 2021 @ 1130 --- steve Just an odd note, I looked at the temperature monitor for Castle and there was no other eruption on the temp monitor recorded between the 0759 eruption on the 3rd and the 1011 eruption today on the 4th. I’m not sure what to make of it.
17420 04 Jun 2021 @ 0612 --- JimS Still displaying post minor behavior.
17125 18 May 2021 @ 0630 --- JimS Quiet. Had a major eruption overnight. The 0230 eruption must have been a major.
17109 17 May 2021 @ 0716 --- JimS Quiet. Had a major eruption overnight.
16990 06 May 2021 @ 0757 --- JimS Castle is sloshing. Overnight eruption was apparently a minor.
16815 19 Jan 2021 @ 1431 --- mhvogel The graph barely picked up the eruption, if the small spike on the graph was an eruption. I think the graph is somehow wrong because I don't recall Castle having 12.5 hour intervals. I'll erase the entry when more data is available.
16810 16 Jan 2021 @ 1652 --- Graham Castle is a Major.
16441 19 Oct 2020 @ 1057 --- am Lightly steaming. Last eruption was a major
16148 17 Sep 2020 @ 0645 --- William On a bike-by observation it looks to me like Castle had a major eruption overnight
15726 25 Aug 2020 @ 0813 --- am Castle spitting up water and showing signs it’s previous eruption was a minor.
14159 26 Mar 2020 @ 0704 --- CraigC Looks post-Major at 07:04
14110 02 Feb 2020 @ 1434 --- mhvogel The Bluetooth readout confirms it was a major.
13983 28 Oct 2019 @ 1537 --- mhvogel After reviewing the castle logger graph several times, castle had a minor. The duration of the eruption was 12 minutes. I lined up the start of the spike on the graph to the end of it. The spike on the graph is small compared to the rest of the previous eruptions.
13953 17 Oct 2019 @ 0930 17 Oct 2019 @ 0949 AngelaT Castle is erupting short bursts up to 1 meter, sporadically, indicative of a previous minor eruption.
13673 13 Sep 2019 @ 0530 --- B**2 From Beehive, sounded like steam phase of eruption. Perhaps major after minor? Anxiously waiting for electronic. With last moonlight looks like eruption.
12788 24 Jul 2019 @ 1449 --- cwonder Sporadic heavy splashing with occasional 5-20' bursts
11612 07 Jun 2019 @ 0848 --- B**2 Very quiet. Probably an overnight major. Was quiet when I passed by about 07:00 too.
11438 31 May 2019 @ 0713 --- B**2 Castle quiet - probable overnight major.
11283 21 May 2019 @ 1130 --- AngelaT Observed erratic, ongoing eruptions up to 2 m high past 1 hour.
11373 21 May 2019 @ 1045 --- Ben VL Sloppy. Minored overnight.
11127 29 Apr 2019 @ 1023 --- Polly Appears to have had a major this morning.
11093 27 Apr 2019 @ 0751 --- Micah Kipple Splashy play. May have minored overnight
11045 22 Apr 2019 @ 1057 --- mhvogel A volunteer observed castle having a major. He saw it transition from water to heavy steam phase.
EntrySourceLinkComment
23 May 2017 @ 1746 JSJ https://www.youtube.com/watch?v=Xhs0ZWQEJ04 Half-minute video showing Castle Geyser's 5:46 PM-onward eruption on 23 May 2017.
10 Aug 2018 @ 1427 JSJ https://www.flickr.com/photos/jsjgeology/46465868542 Photo (1 of 3) of Castle Geyser's 2:27 PM-onward eruption on 10 August 2018, as seen from boardwalk near Liberty Pool.
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
BaselineDistance (ft)Description
Bike Path 200On the side of the bike path south of the geyser.
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