Last Known Eruption
1d 6h 44m ago

Latest Eruptions

Eruption DurationInterval
01 Jul 2022 @ 05063m
01 Jul 2022 @ 05035h 4m
30 Jun 2022 @ 2359 ns3m
30 Jun 2022 @ 2356 ini9h 38m
30 Jun 2022 @ 14183m
30 Jun 2022 @ 14154h 55m
30 Jun 2022 @ 092021h 23m
29 Jun 2022 @ 11572m
29 Jun 2022 @ 11552m
29 Jun 2022 @ 115315h 18m
28 Jun 2022 @ 20353m
28 Jun 2022 @ 2032 ini5h 6m
28 Jun 2022 @ 15262m
28 Jun 2022 @ 15245h 34m
28 Jun 2022 @ 09507m
28 Jun 2022 @ 09434m
28 Jun 2022 @ 093918h 26m
27 Jun 2022 @ 15133m
27 Jun 2022 @ 15105h 15m
27 Jun 2022 @ 09553m
27 Jun 2022 @ 095221h 2m
26 Jun 2022 @ 12504h 5m
26 Jun 2022 @ 08455m
26 Jun 2022 @ 08402m
26 Jun 2022 @ 08387m
26 Jun 2022 @ 083110h 20m
25 Jun 2022 @ 22113m
25 Jun 2022 @ 2208 ini5h 4m
25 Jun 2022 @ 17042m
25 Jun 2022 @ 17025h 8m
25 Jun 2022 @ 11543m
25 Jun 2022 @ 11515h 3m
25 Jun 2022 @ 06483m
25 Jun 2022 @ 064517h 21m
24 Jun 2022 @ 13243m
24 Jun 2022 @ 132123h 37m
23 Jun 2022 @ 13442m
23 Jun 2022 @ 13425h 34m
23 Jun 2022 @ 08082m
23 Jun 2022 @ 08069h 50m
22 Jun 2022 @ 22163m
22 Jun 2022 @ 2213 ini23h 9m
21 Jun 2022 @ 2304 ini4h 18m
21 Jun 2022 @ 18464m
21 Jun 2022 @ 1842 ini4h 52m
21 Jun 2022 @ 1350 ini4h 21m
21 Jun 2022 @ 09293m
21 Jun 2022 @ 09261d 15h 6m
19 Jun 2022 @ 1820 ini5h 44m
19 Jun 2022 @ 12364m
19 Jun 2022 @ 12322m
19 Jun 2022 @ 1230 ini16h 21m
18 Jun 2022 @ 20093m
18 Jun 2022 @ 2006 ini4h 53m
18 Jun 2022 @ 1513 ini4h 58m
18 Jun 2022 @ 10153m
18 Jun 2022 @ 1012 ini18h 1m
17 Jun 2022 @ 1611 ini17h 16m
16 Jun 2022 @ 22553m
16 Jun 2022 @ 2252 ini10h 20m
16 Jun 2022 @ 12325m
16 Jun 2022 @ 12272m
16 Jun 2022 @ 1225 ini5d 18h 8m
10 Jun 2022 @ 18175m
10 Jun 2022 @ 1812 ini4h 17m
10 Jun 2022 @ 13554m
10 Jun 2022 @ 13513m
10 Jun 2022 @ 1348 ini18h 24m
09 Jun 2022 @ 19244m
09 Jun 2022 @ 19203m
09 Jun 2022 @ 1917 ini10h 40m
09 Jun 2022 @ 08372m
09 Jun 2022 @ 08351d 15h 51m
07 Jun 2022 @ 16444m
07 Jun 2022 @ 16403m
07 Jun 2022 @ 1637 ini5h 27m
07 Jun 2022 @ 11106m
07 Jun 2022 @ 11045m
07 Jun 2022 @ 1059 ini20h 32m
06 Jun 2022 @ 1427520h 22m
05 Jun 2022 @ 18052d 1m
03 Jun 2022 @ 18043m
03 Jun 2022 @ 1801 ini5h 8m
03 Jun 2022 @ 1253 ini3h 39m
03 Jun 2022 @ 09143m
03 Jun 2022 @ 091115m
03 Jun 2022 @ 0856 ini23h 43m
02 Jun 2022 @ 09133m
02 Jun 2022 @ 091011h 40m
01 Jun 2022 @ 21303m
01 Jun 2022 @ 21279m
01 Jun 2022 @ 2118 ini4d 7h 38m
28 May 2022 @ 13404m
28 May 2022 @ 1336 ini1d 6h 19m
27 May 2022 @ 071713h 30m
26 May 2022 @ 17474m
26 May 2022 @ 1743 ini4h 46m
26 May 2022 @ 12575m
26 May 2022 @ 1252 ini4d 19h 57m
21 May 2022 @ 16554m

Interval Statistics

Interval Count100
Min2m
Max5d 18h 8m
Mean9h 43m
Median12m
Initial-to-Initial
Interval Count26
Min3h 57m
Max5d 18h 13m
Mean1d 8h 44m
Median17h 40m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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
21127 29 Apr 2022 @ 1510 --- DanS Boiled up but did not erupt
20040 18 Oct 2021 @ 1557 18 Oct 2021 @ 1559 Tara variable boiling from a.few inches below overflow
20039 18 Oct 2021 @ 1547 --- Tara boiling at low water level
20353 15 Oct 2021 @ 1737 --- Tara boiled up but did not erupt
20354 05 Oct 2021 @ 1428 --- Tara boiled up but did not erupt
19719 24 Sep 2021 @ 1207 --- SteveO Boiled up, no eruption.
19665 20 Sep 2021 @ 1349 --- Graham Splashy boil.
19536 13 Sep 2021 @ 1053 --- Graham Big boil
19406 09 Sep 2021 @ 1425 09 Sep 2021 @ 1428 Graham Boiled up, 15m after Fountain. Looked more like a small vertical eruption rather than the rounded boil it usually does.
19405 09 Sep 2021 @ 1406 --- Graham Water visible in MT. Just moved to the overlook so it might have been visible earlier. 4min before Fountain erupted.
19264 03 Sep 2021 @ 2008 --- Tara boiled up, no eruption
19181 31 Aug 2021 @ 0815 --- Graham Boiled up before Fountain.
19023 23 Aug 2021 @ 1707 --- William boiled to the crater rim but did not erupt.
18989 22 Aug 2021 @ 1546 22 Aug 2021 @ 1555 minissa Maintained a full, bubbling pool for most of this time, but if there was a follow-up eruption, the steam from Fountain and Clepsydra obscured it.
18970 20 Aug 2021 @ 2018 --- minissa Bubbled up but did not erupt
18969 20 Aug 2021 @ 2006 --- minissa Bubbled up but did not erupt
18757 31 Jul 2021 @ 0639 --- LynnS Boiled up about 3 feet above ground but did not erupt
18658 25 Jul 2021 @ 1051 --- LynnS Boiled but did not erupt
18634 24 Jul 2021 @ 0929 --- LynnS Boiled but did not erupt
18554 20 Jul 2021 @ 2011 --- Tara Boiled up, no eruption
18534 19 Jul 2021 @ 1635 --- Tara boiled up but did not erupt
18523 19 Jul 2021 @ 1101 --- steve Boiled but did not erupt
18470 16 Jul 2021 @ 2124 --- steve Boiled to 3-4 feet
18398 12 Jul 2021 @ 2052 --- William boiled and tried pretty hard to erupt for ~30s but did not
18376 11 Jul 2021 @ 1919 --- Tara low boil up, no eruption
18301 06 Jul 2021 @ 2127 06 Jul 2021 @ 2130 Tara low boiling, did not really try to erupt
18267 04 Jul 2021 @ 2118 --- Tara Weak boil up.
18268 04 Jul 2021 @ 2105 --- Tara Approximate time of first boil up prior to Fountain.
18251 02 Jul 2021 @ 2202 --- Tara boiled up, no eruption
18250 02 Jul 2021 @ 2152 --- Tara boiled up from below overflow
18249 02 Jul 2021 @ 2148 --- Tara boiled up from below overflow
18208 30 Jun 2021 @ 1046 --- Graham Boiled up.
18199 29 Jun 2021 @ 1820 29 Jun 2021 @ 1838 Tara Water level rose after 1816 eruption and pool boiled up several times between 1820 and 1828, but it did not erupt. After 1828 the boiling ended, but pool was full and overflowing into Morning until Fountain stopped at 1837. Water dropped out if sight at 1838.
18198 29 Jun 2021 @ 1813 --- Tara Filled and stayed full & boiling until 1816 eruption
17987 21 Jun 2021 @ 2118 --- Tara boiled up prior to Ftn start
17774 14 Jun 2021 @ 1122 --- LynnS Boiled up to ground level at 1120 but did not erupt with the 1115 eruption of Fountain.
17714 12 Jun 2021 @ 1016 12 Jun 2021 @ 1023 bbev MT continued to boil and "crown".
17633 09 Jun 2021 @ 1906 --- Tara boiled up, no eruption
17583 08 Jun 2021 @ 1347 --- Graham Boiled up before Fountain.
17584 08 Jun 2021 @ 1332 --- Graham Boiled up before Fountain. First pre-Fountain boil I have seen this trip.
17520 06 Jun 2021 @ 2053 --- Tara boiled up, no eruption
17496 05 Jun 2021 @ 2023 --- Tara boiled up, no eruption
17378 02 Jun 2021 @ 1332 --- Stephen_Gemar Boiled up, but no eruption.
17377 02 Jun 2021 @ 1322 --- Stephen_Gemar Small splashing seen in Thief.
17302 30 May 2021 @ 2311 --- Tara boiled up, no eruption
17299 30 May 2021 @ 1721 --- Tara boiled up, no eruption
17298 30 May 2021 @ 1111 --- Tara boiled up, no eruption
17105 16 May 2021 @ 1835 --- Tara boiled up, no eruption
16391 10 Oct 2020 @ 1311 --- steve MT may have done something behind Fountain’s steam cloud.
16002 06 Sep 2020 @ 1504 --- jkgood Boiled up
16119 04 Sep 2020 @ 2104 --- Tara Boiled up.
15966 04 Sep 2020 @ 1606 --- Tara boiled up, no eruption
15965 04 Sep 2020 @ 1551 --- Tara boiled up, no eruption
15567 13 Aug 2020 @ 1749 13 Aug 2020 @ 1750 JSJ Bubbling, roiling, churning, doming, but no eruption.
15503 10 Aug 2020 @ 1928 --- minissa Weren't sure what to call this. It had one tall (? 20 feet) burst from sub-surface pool followed by a bit of splashing seen above the top of the opening, then drained
15370 04 Aug 2020 @ 2341 --- Tara boil up
14985 14 Jul 2020 @ 1909 --- William boiled but did not erupt
14529 03 Jun 2020 @ 2146 --- William failed attempt at eruption
13879 04 Oct 2019 @ 1800 --- Tara Visible water level ~8" below inner rim, group probably in a stall. See other notes.
13823 27 Sep 2019 @ 1936 27 Sep 2019 @ 1937 Tara Boiled up and filled basin but did not erupt.
13776 21 Sep 2019 @ 1906 21 Sep 2019 @ 1908 Tara Overflowed main crater rim with boiling over vent, had two small splashes at 1908, then dropped below rim without erupting.
13695 14 Sep 2019 @ 2348 --- Tara More eruptions may have happened during Fountain, but it was too steamy to see for sure.
13584 05 Sep 2019 @ 2008 --- Graham Boiled up
13556 05 Sep 2019 @ 0509 --- Graham Boiled with wesk splashes but did not erupt.
13543 04 Sep 2019 @ 1505 --- Graham Boiled up but didnt erupt.
13529 03 Sep 2019 @ 1636 --- Graham Boiled up but didnt erupt.
13494 01 Sep 2019 @ 1622 --- Graham Boiled up but didn't erupt.
13479 31 Aug 2019 @ 1738 --- Tara Boiled up for over a minute
13456 29 Aug 2019 @ 1655 --- steve Boiled to a few feet
13277 16 Aug 2019 @ 0018 --- Tara Boiled up without erupting
13261 14 Aug 2019 @ 1841 --- minissa Water rose as 1841 Fountain started and stayed up for at least 20 min (hard to see due to steam and wind direction), occasional bubbles but never erupted
13224 13 Aug 2019 @ 1920 --- Tara Visible boil.
13155 10 Aug 2019 @ 1951 --- Tara Boiled up for about a minute but did not erupt. Water level dropped but boiling stayed in view for several minutes.
13152 10 Aug 2019 @ 1849 --- Tara Visible boiling in progress on arrival.
13144 10 Aug 2019 @ 1130 --- Tara Visible boiling
13130 09 Aug 2019 @ 1342 --- Tara Visible boiling
13020 04 Aug 2019 @ 0942 --- Stephen_Gemar Boiled up at this time.
12944 01 Aug 2019 @ 2223 --- Tara Boiled up.
12910 01 Aug 2019 @ 0716 --- rbwhitaker Boiled up two or three feet, but I didn't see it erupt.
12501 16 Jul 2019 @ 0858 --- Barbara Lasseter Longish boil with one 3-4 ft burst
12496 16 Jul 2019 @ 0146 --- Tara Boiled up but did not erupt.
12460 12 Jul 2019 @ 1712 --- Tara First blips visible. Boils got stronger but Thief had not erupted as of 1815.
12043 29 Jun 2019 @ 1827 --- Tara First water seen.
11996 27 Jun 2019 @ 2204 --- Tara boiled up
11994 27 Jun 2019 @ 2102 27 Jun 2019 @ 2142 Tara Visible water level and boiling in crater on arrival at 2102. Water level continued to rise until several boil ups just prior to the initial eruption.
11590 05 Jun 2019 @ 0701 --- Graham Big boil
11430 30 May 2019 @ 2110 --- Tara Water visible. No eruption of Fountain or Morning as of 2125.
11433 30 May 2019 @ 1000 --- Kyle boiling up within crater up to 2 ft H D= ~10 sec. boiling audible within FTN immediately prior
11432 30 May 2019 @ 0952 --- Kyle boiling within crater 1-2 ft H. D<10 s. audible boiling within Fountain immediately prior
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.