Last Known Eruption
30d 2h 3m ago

Latest Eruptions

Eruption DurationInterval
24 Oct 2024 @ 16164m
24 Oct 2024 @ 161214m
24 Oct 2024 @ 1558 ini1d 2h 24m
23 Oct 2024 @ 133412m
23 Oct 2024 @ 1322 ini19h 46m
22 Oct 2024 @ 17369d 18h 56m
12 Oct 2024 @ 22409m
12 Oct 2024 @ 22319m
12 Oct 2024 @ 2222 ini7h 38m
12 Oct 2024 @ 14444m
12 Oct 2024 @ 1440 ini8d 3m
04 Oct 2024 @ 14374m
04 Oct 2024 @ 143312m
04 Oct 2024 @ 1421 ini1d 3h 17m
03 Oct 2024 @ 11042d 22h 39m
30 Sep 2024 @ 1225 ini14h 4m
29 Sep 2024 @ 22213m
29 Sep 2024 @ 221810m
29 Sep 2024 @ 2208 ini3d 13h 18m
26 Sep 2024 @ 08504m
26 Sep 2024 @ 08463m
26 Sep 2024 @ 08431d 10h 47m
24 Sep 2024 @ 21565m
24 Sep 2024 @ 2151 ini13h 47m
24 Sep 2024 @ 0804 ini min23h 45m
23 Sep 2024 @ 081930s 15h 8m
22 Sep 2024 @ 17114m
22 Sep 2024 @ 170713m
22 Sep 2024 @ 16541d 6h 23m
21 Sep 2024 @ 1031 A3m 3d 18h 15m
17 Sep 2024 @ 1616 ini14h 36m
17 Sep 2024 @ 01402m
17 Sep 2024 @ 01389m
17 Sep 2024 @ 0129 ini14h 46m
16 Sep 2024 @ 10434m
16 Sep 2024 @ 1039 ini min1d 2h 13m
15 Sep 2024 @ 08261d 14h 15m
13 Sep 2024 @ 18114m
13 Sep 2024 @ 1807 ini5h 14m
13 Sep 2024 @ 12533m
13 Sep 2024 @ 1250 ini5h 26m
13 Sep 2024 @ 07245m
13 Sep 2024 @ 07195m
13 Sep 2024 @ 0714 ini20h 45m
12 Sep 2024 @ 10293m
12 Sep 2024 @ 102610m
12 Sep 2024 @ 1016 ini2d 58m
10 Sep 2024 @ 09184h 35m
10 Sep 2024 @ 04433m
10 Sep 2024 @ 0440 ini6h 2m
09 Sep 2024 @ 22384m
09 Sep 2024 @ 22346m
09 Sep 2024 @ 2228 ini5h 30m
09 Sep 2024 @ 16584m
09 Sep 2024 @ 1654 ini4h 48m
09 Sep 2024 @ 12063m
09 Sep 2024 @ 120314m
09 Sep 2024 @ 114920m
09 Sep 2024 @ 112917m
09 Sep 2024 @ 111230m
09 Sep 2024 @ 1042 ini1d 20h 49m
07 Sep 2024 @ 1353 ns~47m 2d 22h 13m
04 Sep 2024 @ 15402m
04 Sep 2024 @ 153810m
04 Sep 2024 @ 1528 ini5h 44m
04 Sep 2024 @ 09443m
04 Sep 2024 @ 0941 ini2d 15h 50m
01 Sep 2024 @ 17513m
01 Sep 2024 @ 174822h 30m
31 Aug 2024 @ 19182d 21h 47m
28 Aug 2024 @ 21315m
28 Aug 2024 @ 2126 ini6h 54m
28 Aug 2024 @ 14324m
28 Aug 2024 @ 14286m
28 Aug 2024 @ 1422 ini4d 4h 45m
24 Aug 2024 @ 093730s 3m
24 Aug 2024 @ 093430s 3d 13h 40m
20 Aug 2024 @ 19543m
20 Aug 2024 @ 19518m
20 Aug 2024 @ 1943 ini2d 8h 0m
18 Aug 2024 @ 11431d 15h 17m
16 Aug 2024 @ 20264m
16 Aug 2024 @ 20227m
16 Aug 2024 @ 2015 ini1d 23h 49m
14 Aug 2024 @ 20264m
14 Aug 2024 @ 20223m
14 Aug 2024 @ 2019 ini5h 46m
14 Aug 2024 @ 14331d 18h 28m
12 Aug 2024 @ 20056m
12 Aug 2024 @ 19597h 8m
12 Aug 2024 @ 125119h 37m
11 Aug 2024 @ 17146m
11 Aug 2024 @ 17083m
11 Aug 2024 @ 17056h 2m
11 Aug 2024 @ 1103 ns11m
11 Aug 2024 @ 1052 ns2d 16h 57m
08 Aug 2024 @ 1755 ini7d 17h 45m
01 Aug 2024 @ 0010 ini5d 12h 45m
26 Jul 2024 @ 112513h 19m
25 Jul 2024 @ 22062m

Interval Statistics

Interval Count100
Min2m
Max9d 18h 56m
Mean21h 46m
Median18m
Initial-to-Initial
Interval Count29
Min5h 17m
Max10d 15h 0m
Mean3d 3h 6m
Median1d 23h 56m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
37388 03 Oct 2024 @ 1857 --- Graham Boiled up.
37311 01 Oct 2024 @ 1148 --- Graham Boiled up.
37288 30 Sep 2024 @ 1944 --- Graham Boiled up
37282 30 Sep 2024 @ 1219 --- Graham Boiled up.
37231 28 Sep 2024 @ 1800 --- Graham Boiled up but didn't erupt.
37108 21 Sep 2024 @ 1725 --- Michael Boiled up but didn't erupt.
37015 16 Sep 2024 @ 1741 --- Graham Boiled up but didn't erupt.
36992 15 Sep 2024 @ 1505 --- Tara boiled up to a few feet but did not erupt. Low boiling could be seen at times until 1515.
36923 12 Sep 2024 @ 0950 --- Graham First water blips seen
36909 11 Sep 2024 @ 1450 --- Graham Filled and had a flat boil, but did not erupt . Continued low boil and had a push at 1455, 1500, 1502. Full and weak at 1504.
36893 11 Sep 2024 @ 0405 --- Graham Boiled and splashed.
36892 10 Sep 2024 @ 2120 --- Micah Kipple Big boil to 5-6 feet sorta bursty but the consensus was not an eruption.
36866 09 Sep 2024 @ 1105 --- Graham Boiled
36865 09 Sep 2024 @ 0700 --- Graham Pushes of steam. Water visible splashing in cone later.
37912 20 Aug 2024 @ 1926 --- Tara water visible prior to initial at 1943
36454 18 Aug 2024 @ 1134 --- LynnS Boiled up above ground level but did not rrupt
37911 14 Aug 2024 @ 2010 --- Tara boiled up prior to start of Fountain
37908 01 Aug 2024 @ 2033 --- Tara boiled up but did not erupt
37857 19 Jul 2024 @ 1941 --- Tara boiling visible from boardwalk
37856 18 Jul 2024 @ 1856 --- Tara boiling visible from boardwalk
35963 18 Jul 2024 @ 1317 18 Jul 2024 @ 1328 mhreed Sustained, violent boiling up to a few feet at times, with a couple instances of actual small splashes. No full, defined eruption. Weak boiling continued through 1335.
35959 18 Jul 2024 @ 1129 --- mhreed Water no longer visible in MT but it’s been an hour since I last looked from the observation spur.
35924 16 Jul 2024 @ 1905 16 Jul 2024 @ 1910 mhreed Splashed a bit but did not commit to an eruption.
35678 02 Jul 2024 @ 1346 --- K.Cooper boil up
35282 16 Jun 2024 @ 2052 16 Jun 2024 @ 2059 Craigmon99 Washing machine inside crater. Splashing up to 6 feet
35220 14 Jun 2024 @ 1304 --- JSJ Water level high.
35596 06 Jun 2024 @ 2118 --- Tara visible water, low boiling
34602 17 May 2024 @ 1436 --- Tara boiled up but did not erupt
34584 16 May 2024 @ 1817 --- Tara boiled up, no eruption
34529 11 May 2024 @ 2130 --- Tara boiled up and filled basin, but did not erupt
34420 04 May 2024 @ 1924 --- Tara water level rising with boiling
29146 24 Sep 2023 @ 1048 --- Tara Possible third Morning's Thief eruption but hard to tell due to steam.
28060 06 Sep 2023 @ 1009 --- Graham Boiled up.
27572 13 Aug 2023 @ 1900 --- minissa Full and bubbling
27569 13 Aug 2023 @ 1712 --- minissa Water just becoming visible
27350 30 Jul 2023 @ 2309 --- Tara boiled up with no eruption
27051 13 Jul 2023 @ 0752 13 Jul 2023 @ 0756 LynnS Boiled up 1 to 2 meters high but did not erupt in bursts
27059 12 Jul 2023 @ 2106 --- Tara visible splashes, continued until initial eruption at 2113
26990 10 Jul 2023 @ 1458 --- minissa This was one of up to 5 independent solo eruptions; the thief's pool, which been full and boiling remained high till the series ended
26648 24 Jun 2023 @ 1803 --- Graham Full and bubbling.
26625 23 Jun 2023 @ 1128 --- Graham Small splash above the rim. Also 1131, 1134, 1144
26573 21 Jun 2023 @ 1633 --- JSJ Steam from Fountain's eruption obscured Morning's Thief for most of the time. Visible low to moderately low spouting at 1633. Surging of moderate height at 1634 (twice).
26519 20 Jun 2023 @ 1437 20 Jun 2023 @ 1627 Craigmon99 Boiling constantly
26035 03 Jun 2023 @ 2007 03 Jun 2023 @ 2027 Tara Fountain started at 2001 but water was not immediately visible in Morning's Thief. It rose with boiling at 2007 and gradually filled its basin over the next 5 minutes. Starting 17 minutes into Fountain, MT had a series of boils at 2018, 2019, and 2020 that reached a few feet high but did not lead to an eruption. After that the pool stayed high until just as Fountain was ending at 2027.
25758 24 May 2023 @ 1450 --- bbev Water level high and boiling
25731 23 May 2023 @ 1854 23 May 2023 @ 1915 Tara Low boiling appeared at 1854. There were several small domes but not really a full boil up. Then the boiling gradually lessened and the water level gradually rose until it was near the top of the inner crater at 1906. The water stayed high with slight fluctuations and light bubbling until 1915, right before Fountain ended.
25307 30 Apr 2023 @ 2011 --- SantaFe108 After Fountain. Boiled up but didn't erupt.
24707 17 Oct 2022 @ 1908 --- Tara boil up, no eruption
24424 16 Oct 2022 @ 1454 --- Tara boil up, no eruption
24275 05 Oct 2022 @ 1839 --- steve Boil no eruption
24159 29 Sep 2022 @ 0934 --- ThomasR Attempted to erupt
24637 16 Sep 2022 @ 1617 --- Tara low, weak boil up
24638 16 Sep 2022 @ 1557 --- Tara water became visible rising in crater with boiling
23751 11 Sep 2022 @ 1354 --- steve Boiled
23750 11 Sep 2022 @ 1350 --- steve Boiled
23709 10 Sep 2022 @ 1340 --- ThomasR Boil in Morning’s Thief
23680 09 Sep 2022 @ 1633 --- Stephen_Gemar Boiled up, no eruption.
23685 09 Sep 2022 @ 1621 --- steve Low boiling
23665 08 Sep 2022 @ 2004 --- Tara long boil up, no eruption
23590 05 Sep 2022 @ 1423 --- Dave W Filled but did not erupt
23453 27 Aug 2022 @ 1805 27 Aug 2022 @ 2011 Tara No water visible in MT from 1805 until 3 minutes into Fountain at 1947. The basin filled at about 1950 and the water remained at that level with gentle boiling until the end of Fountain. The water level began to drop at 2011.
24552 26 Aug 2022 @ 1833 --- Tara boil up with no eruption 3 minutes before the start of Fountain
23418 23 Aug 2022 @ 2208 --- Tara boiled up 4 minutes prior to Fountain
23245 18 Aug 2022 @ 1029 --- steve Boil, no eruption
23230 17 Aug 2022 @ 0906 --- steve One minute boil
23229 17 Aug 2022 @ 0851 --- steve Low boil
23214 16 Aug 2022 @ 0755 --- steve Low boiling
23200 15 Aug 2022 @ 1322 --- steve Boiled to 6 feet but that’s all
23199 15 Aug 2022 @ 1308 --- steve A second small boil.
23198 15 Aug 2022 @ 1304 --- steve Morning’s Thief boiled to a few feet.
23157 12 Aug 2022 @ 1631 --- minissa Just noting that MT again filled and boiled, remaining within an inch either way of OF and remained at this level till Fountain drained, at which point it also drained.
23155 12 Aug 2022 @ 1626 --- minissa Bubbled to 2-3 feet, then quit
23086 06 Aug 2022 @ 1702 --- Tara strong boil up with lots of runoff into Morning but did not fully erupt
23066 05 Aug 2022 @ 2027 --- Tara low boil up, water level never reached rim
23019 03 Aug 2022 @ 2025 --- Tara strong boil up, no eruption
22937 29 Jul 2022 @ 1603 --- LynnS Boiled up
22882 27 Jul 2022 @ 1348 --- LynnS Boiled up nut did not erupt
23020 26 Jul 2022 @ 2138 --- Tara low boil up
22817 23 Jul 2022 @ 1949 --- steve Good boil to maybe 6-10 feet high
22573 14 Jul 2022 @ 1246 --- LynnS Boiled again
22572 14 Jul 2022 @ 1241 --- LynnS Boiled
22478 11 Jul 2022 @ 0031 --- Tara noisy boil up, not a full eruption
22455 10 Jul 2022 @ 0106 --- Tara boiled up without erupting
22422 09 Jul 2022 @ 0937 --- steve Boiled, but only boiled.
22413 08 Jul 2022 @ 1833 --- Tara boiled up without erupting
22412 08 Jul 2022 @ 1825 --- Tara boiled up without erupting
22402 08 Jul 2022 @ 1252 --- steve Low boil to 1-2 feet, no eruption
22302 03 Jul 2022 @ 1945 --- steve Came up, boiled, but no boom.
22345 30 Jun 2022 @ 1902 --- Tara boiled up but did not erupt
22220 29 Jun 2022 @ 2020 --- Tara Boiled up but did not erupt. This was the only time I saw water.
22184 28 Jun 2022 @ 0947 --- LynnS Boiled up but did not erupt
22039 19 Jun 2022 @ 1823 --- Tara Saw water boil up, but could not see if there was an eruption. MT was obscured by Fountain's steam after that.
22038 19 Jun 2022 @ 1816 --- Tara Low boil-up just before Fountain rise.
22031 18 Jun 2022 @ 2013 --- Tara boiled up, no eruption
22030 18 Jun 2022 @ 1511 --- Tara boiled up but did not erupt
21878 09 Jun 2022 @ 1911 --- Tara Big boil up, not a full eruption
21814 07 Jun 2022 @ 1632 --- Graham Boiled up 4m before Fountain started.
21641 01 Jun 2022 @ 1529 --- Stephen_Gemar First water in Thief. Boiled up but no eruption. Nothing further observed from Morning’s Thief, but vision was obscured by steam.
21409 21 May 2022 @ 1715 --- Tara When I looked at MT late in Fountain's eruption, it was nearly full with somw bubbling. This continued for several minutes. It began to drop gradually out of sight at 1715, about 1 minute before Fountain ended.
21170 05 May 2022 @ 1421 --- Tara boiling visible
EntrySourceLinkComment
09 Aug 2018 @ 1223 JSJ https://www.flickr.com/photos/jsjgeology/45811573254 Photo (1 of 4) of Morning Thief's Geyser's 12:23 PM eruption on 9 August 2018.
09 Aug 2018 @ 1218 JSJ https://www.flickr.com/photos/jsjgeology/46483349132 Photo (1 of 2) of Morning Thief's Geyser's 12:18 PM eruption on 9 August 2018.
06 Aug 2017 @ 1304 JSJ https://www.flickr.com/photos/jsjgeology/36442715011 Photo (out of 6) of Morning's Thief Geyser's 1:04 PM eruption on 6 August 2017.
10 Aug 2017 @ 1700 JSJ https://www.flickr.com/photos/jsjgeology/36183820090 Photo (out of 3) of Morning's Thief Geyser's 5:00 PM eruption on 10 August 2017.
10 Aug 2017 @ 1703 JSJ https://www.flickr.com/photos/jsjgeology/36183816810 Photo (1 of 4) of Morning's Thief Geyser's 5:03 to 5:04 eruption on 10 August 2017.
14 May 2015 @ 1715 JSJ https://www.youtube.com/watch?v=NHF-LylA7UY Video of the 5:15 PM eruption of Morning Thief's Geyser on 14 May 2015.
08 Jul 2014 @ 0826 JSJ https://www.youtube.com/watch?v=7zuQk8JsNTQ Clip # 1 of this video compilation depicts the Morning's Thief-Fountain dual eruption.
12 Jul 2014 @ 1532 JSJ https://www.youtube.com/watch?v=RKmS2pgjyGw Clips # 1-2 and # 7-8 of this video compilation depict the Fountain-Morning's Thief dual eruptions at 1532-1533 and 1536-1537.
Baseline does not exist.