Last Known Eruption
6h 33m ago

Latest Eruptions

Eruption DurationInterval
14 May 2025 @ 16353m
14 May 2025 @ 1632 ini2d 5h 9m
12 May 2025 @ 11233m
12 May 2025 @ 11201d 2h 2m
11 May 2025 @ 0918 ns ini13h 10m
10 May 2025 @ 20083m
10 May 2025 @ 2005 ini5h 3m
10 May 2025 @ 15023m
10 May 2025 @ 1459 ini5h 24m
10 May 2025 @ 09353m
10 May 2025 @ 0932 ini14h 16m
09 May 2025 @ 19164m
09 May 2025 @ 19126m
09 May 2025 @ 1906 ini7h 47m
09 May 2025 @ 1119 ? ie14h 2m
08 May 2025 @ 21175m
08 May 2025 @ 21123m
08 May 2025 @ 2109 ini5h 6m
08 May 2025 @ 16033m
08 May 2025 @ 1600 ini5h 17m
08 May 2025 @ 10433m
08 May 2025 @ 104012m
08 May 2025 @ 1028 ini13h 36m
07 May 2025 @ 20523m
07 May 2025 @ 2049 ini4h 31m
07 May 2025 @ 16183m
07 May 2025 @ 1615 ini1d 7h 7m
06 May 2025 @ 0908 ini19h 26m
05 May 2025 @ 13421d 5h 41m
04 May 2025 @ 08013m
04 May 2025 @ 0758 ini13h 16m
03 May 2025 @ 18423m
03 May 2025 @ 18397m
03 May 2025 @ 1832 ini23h 31m
02 May 2025 @ 19013m
02 May 2025 @ 1858 ini4h 48m
02 May 2025 @ 14106m
02 May 2025 @ 14043m
02 May 2025 @ 1401 ini5h 3m
02 May 2025 @ 08583m
02 May 2025 @ 085512m
02 May 2025 @ 0843 ini13h 16m
01 May 2025 @ 19274m
01 May 2025 @ 1923 ini5h 15m
01 May 2025 @ 14083m
01 May 2025 @ 1405 ini17h 57m
30 Apr 2025 @ 20083m
30 Apr 2025 @ 2005 ini5h 10m
30 Apr 2025 @ 14553m
30 Apr 2025 @ 1452 ini4h 34m
30 Apr 2025 @ 10184m
30 Apr 2025 @ 10148m
30 Apr 2025 @ 1006 ini18h 19m
29 Apr 2025 @ 1547 ini5h 13m
29 Apr 2025 @ 10343m
29 Apr 2025 @ 10317m
29 Apr 2025 @ 1024 ini2d 1h 4m
27 Apr 2025 @ 0920 ini16h 9m
26 Apr 2025 @ 17113d 1h 34m
23 Apr 2025 @ 15373m
23 Apr 2025 @ 1534 ini4h 54m
23 Apr 2025 @ 10402m
23 Apr 2025 @ 1038 ini18h 3m
22 Apr 2025 @ 1635 ini55d 6h 7m
26 Feb 2025 @ 092830d 19h 13m
26 Jan 2025 @ 1415 A23d 23h 34m
02 Jan 2025 @ 14413m
02 Jan 2025 @ 14381d 5h 38m
01 Jan 2025 @ 0900 ie68d 17h 44m
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

Interval Statistics

Interval Count100
Min2m
Max68d 17h 44m
Mean2d 9h 30m
Median4h 41m
Initial-to-Initial
Interval Count37
Min4h 34m
Max180d 37m
Mean6d 11h 2m
Median14h 17m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
39013 12 May 2025 @ 1923 --- Graham Water pooled in the crater and bubbly.
38970 10 May 2025 @ 2011 --- Graham Boiled 6m after Fountain
38929 10 May 2025 @ 1452 --- Graham Boiled 6m before Fountain
38927 10 May 2025 @ 0940 --- Graham Boiled 10m after Fountain
38926 10 May 2025 @ 0928 --- Graham Boiled 2m before Fountain
38925 10 May 2025 @ 0920 --- Graham Boiled 10m before Fountain
38913 09 May 2025 @ 1858 --- Tara boiling visible from lower boardwalk
38921 09 May 2025 @ 1858 --- steve Bubbling water in MT
38916 09 May 2025 @ 1847 --- Tara splashing visible from overlook, noticed heavier steam about 10m before this
38890 08 May 2025 @ 1554 --- Graham Big boil 5m before Fountain.
38891 08 May 2025 @ 1545 --- Graham Low splashes 14m before Fountain and 9m before MT.
38888 08 May 2025 @ 0948 --- Graham Weak boil 51m before Fountain and 40m before MT.
38887 08 May 2025 @ 0935 --- Graham Low splashes 64m before Fountain and 53m before MT.
38870 07 May 2025 @ 1609 --- Graham Boiled 5m before Fountain
38858 06 May 2025 @ 2219 --- Graham Boiled 4m after Fountain started.
38855 06 May 2025 @ 1354 --- Graham Low splashing 1m before Fountain
38768 03 May 2025 @ 1827 --- Graham Weak boil
38754 02 May 2025 @ 1854 --- Graham Low splashes 3m before Fountain
38752 02 May 2025 @ 1356 --- Graham Weak boil 5m before Fountain
38738 02 May 2025 @ 0840 --- Graham Boiled 14m before Fountain and 3m before MT.
38737 02 May 2025 @ 0826 --- Graham Bigger rim splash 28m before Fountain
38736 02 May 2025 @ 0806 --- Graham One splash rim height 48m before Fountain.
38733 01 May 2025 @ 1933 --- Graham Boiled 11m after Fountain
38732 01 May 2025 @ 1917 --- Graham Boiled 5m before Fountain
38728 01 May 2025 @ 1400 --- Graham Weak boil 4m before Fountain
38709 30 Apr 2025 @ 1004 --- Graham Small boil 9m before Fountain and 2m before MT.
38627 25 Apr 2025 @ 1638 --- Graham Boiled 4m after Fountain
38620 25 Apr 2025 @ 1037 --- Graham Boiled 4m after Fountain
38605 24 Apr 2025 @ 1345 --- Graham Boiled 4m after Fountain
38600 24 Apr 2025 @ 0718 --- Graham Boiled 3m after Fountain
38595 23 Apr 2025 @ 1528 --- Graham Boiled 9m before Fountain
38583 23 Apr 2025 @ 1045 --- Graham Boiled 8m after Fountain
38582 23 Apr 2025 @ 1031 --- Graham Boiled 6m before Fountain
38332 27 Feb 2025 @ 1940 --- K.Cooper consistent very weak boil
38297 24 Feb 2025 @ 0922 --- K.Cooper visible low boil
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
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.