Last Known Eruption
3d 17h 47m ago

Latest Eruptions

Eruption DurationInterval
18 May 2024 @ 1450 maj28d 2h 47m
20 Apr 2024 @ 1203 min1m 1s 1h 38m
20 Apr 2024 @ 1025 min38s 172d 23h 8m
30 Oct 2023 @ 1117 maj5m 29s 14m
30 Oct 2023 @ 1103 min1m 6s 9d 22h 54m
20 Oct 2023 @ 1209 ns maj1d 21h 1m
18 Oct 2023 @ 1508 maj6m
18 Oct 2023 @ 1502 min13d 22h 39m
04 Oct 2023 @ 1623 min3d 2h 42m
01 Oct 2023 @ 1341 maj1h 12m
01 Oct 2023 @ 1229 min57s 2h 35m
01 Oct 2023 @ 0954 min~1m 5s 3d 15h 32m
27 Sep 2023 @ 1822 maj13m
27 Sep 2023 @ 1809 min~40s 2d 6h 42m
25 Sep 2023 @ 1127 maj2m
25 Sep 2023 @ 1125 min20h 54m
24 Sep 2023 @ 1431 maj7m
24 Sep 2023 @ 1424 min1m 25s 1h 8m
24 Sep 2023 @ 1316 min1m 0s 21h 21m
23 Sep 2023 @ 1555 ie maj1d 5h 43m
22 Sep 2023 @ 1012 ie min23h 58m
21 Sep 2023 @ 1014 min39s 18h 38m
20 Sep 2023 @ 1536 min42s 2h 16m
20 Sep 2023 @ 1320 min35s 12h 42m
20 Sep 2023 @ 0038 min~50s 2d 11h 51m
17 Sep 2023 @ 1247 maj8m 32s 1h 7m
17 Sep 2023 @ 1140 min59s 2h 27m
17 Sep 2023 @ 0913 min~50s 1h 12m
17 Sep 2023 @ 0801 min~35s 17h 55m
16 Sep 2023 @ 1406 min40s 2h 22m
16 Sep 2023 @ 1144 ini min32s 1d 22h 1m
14 Sep 2023 @ 1343 maj1h 49m
14 Sep 2023 @ 1154 min55s 1h 50m
14 Sep 2023 @ 1004 min42s 22h 49m
13 Sep 2023 @ 11151d 21h 1m
11 Sep 2023 @ 1414 min42s 20h 25m
10 Sep 2023 @ 1749 min55s 3h 41m
10 Sep 2023 @ 1408 min34s 1h 31m
10 Sep 2023 @ 1237 ini min33s 23h 53m
09 Sep 2023 @ 1244 min35s 1h 32m
09 Sep 2023 @ 1112 ini min29s 23h 13m
08 Sep 2023 @ 1159 min2d 3h 52m
06 Sep 2023 @ 0807 maj4m
06 Sep 2023 @ 0803 min22h 19m
05 Sep 2023 @ 09443d 17h 33m
01 Sep 2023 @ 1611 min2d 2h 52m
30 Aug 2023 @ 1319 min5d 19h 58m
24 Aug 2023 @ 1721 ini min5d 2h 13m
19 Aug 2023 @ 1508 min2h 20m
19 Aug 2023 @ 1248 ns min21h 41m
18 Aug 2023 @ 1507 min~33s 1h 59m
18 Aug 2023 @ 1308 ini min20s 2d 1h 8m
16 Aug 2023 @ 1200 min20s 1d 17h 19m
14 Aug 2023 @ 1841 min30"1h 40m
14 Aug 2023 @ 1701 ini min3d 57m
11 Aug 2023 @ 1604 maj1h 9m
11 Aug 2023 @ 1455 min1h 17m
11 Aug 2023 @ 1338 ie3h 51m
11 Aug 2023 @ 0947 min31s 3d 15h 6m
07 Aug 2023 @ 1841 ns maj1h 54m
07 Aug 2023 @ 1647 min30s 1h 11m
07 Aug 2023 @ 1536 min43s 3h 14m
07 Aug 2023 @ 1222 min~30s 5d 5m
02 Aug 2023 @ 1217 min~20s 17h 43m
01 Aug 2023 @ 1834 min2h 16m
01 Aug 2023 @ 1618 min20s 2d 18h 52m
29 Jul 2023 @ 2126 maj4m
29 Jul 2023 @ 2122 min~45s 1h 22m
29 Jul 2023 @ 2000 min~35s 3h 17m
29 Jul 2023 @ 1643 min30s 1h 40m
29 Jul 2023 @ 1503 ini min14s 1d 7h 3m
28 Jul 2023 @ 0800 A maj17h 0m
27 Jul 2023 @ 1500 ns maj21h 42m
26 Jul 2023 @ 171820h 52m
25 Jul 2023 @ 2026 min30s 1d 9h 32m
24 Jul 2023 @ 1054 min~1m 5s 1h 0m
24 Jul 2023 @ 0954 min50s 1d 2h 1m
23 Jul 2023 @ 0753 min35s 1d 11h 48m
21 Jul 2023 @ 2005 maj6m
21 Jul 2023 @ 1959 min~1.5m 1d 1h 38m
20 Jul 2023 @ 1821 min41s 21h 20m
19 Jul 2023 @ 2101 min5s 1d 5h 59m
18 Jul 2023 @ 1502 maj5m
18 Jul 2023 @ 1457 min50s 1h 48m
18 Jul 2023 @ 1309 min45s 1h 19m
18 Jul 2023 @ 1150 min45s 3h 1m
18 Jul 2023 @ 0849 min30s 12h 4m
17 Jul 2023 @ 2045 A maj2d 11h 18m
15 Jul 2023 @ 0927 min44s 2h 29m
15 Jul 2023 @ 0658 min42s 18h 20m
14 Jul 2023 @ 1238 min35s 1d 15h 4m
12 Jul 2023 @ 2134 maj1h 13m
12 Jul 2023 @ 2021 min55s 1h 17m
12 Jul 2023 @ 1904 min45s 3h 40m
12 Jul 2023 @ 1524 min40s 18h 31m
11 Jul 2023 @ 2053 min45s 1h 41m
11 Jul 2023 @ 1912 min40s 3h 22m
11 Jul 2023 @ 1550 min35s 6d 7h 29m
05 Jul 2023 @ 082125s 2d 11h 38m
02 Jul 2023 @ 2043 min30s 1h 39m

Interval Statistics

Interval Count100
Min2m
Max172d 23h 8m
Mean3d 4h 59m
Median17h 21m
Initial-to-Initial
Interval Count6
Min1d 1h 25m
Max16d 1h 58m
Mean8d 3h 26m
Median6d 1h 40m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
28149 09 Sep 2023 @ 1520 --- RMichaels No additional minors since 1244.
27604 14 Aug 2023 @ 1957 --- minissa First fill of this cycle. Was starting to OF as we left around 2000.
27592 14 Aug 2023 @ 1747 --- minissa 1st OF for this cycle. I'm making all these notes just because this behavior is a bit different from what I've seen in the past and offer it in case anyone wants to follow up. About 5 minutes of heavy OF with some agitation over vent Edit: 3 more episodes of this sort of activity at 1800, 1815, and 1828 before the "hot period" that initiated the eruption. Times for OF were, respectively, 7 minutes, 5 minutes, and 2-3 minutes
27591 14 Aug 2023 @ 1700 --- minissa Furious boiling
27590 14 Aug 2023 @ 1640 14 Aug 2023 @ 1656 minissa Intermittent fills as above
27589 14 Aug 2023 @ 1625 --- minissa Extended good OF
27588 14 Aug 2023 @ 1611 --- minissa 7 minutes of good OF
27587 14 Aug 2023 @ 1559 --- minissa Total 5' 54" excellent OF, 3'18" then 2' 36" but no bubbling or visible convection {binoculars from overlook}
27586 14 Aug 2023 @ 1545 --- minissa 3 min sustained cone-sheeting OF
27585 14 Aug 2023 @ 1522 --- minissa First fill with overflow Edit: pool remained full with varying degrees of OF x 13 min
26120 07 Jun 2023 @ 1030 07 Jun 2023 @ 1040 SantaFe108 Filled to OF and had one small boil at 1030. Another OF fill with better boiling at 1038.
26118 07 Jun 2023 @ 0925 --- SantaFe108 Filled with OF and splashed for a few minutes. There have been other fills before this but no splashing.
23142 11 Aug 2022 @ 1529 --- minissa Another OF. I skipped mentioning one at 1520 because the cone is barely draining only to fill and OF again and oh, look, 1530 filling and bubbling
23141 11 Aug 2022 @ 1517 --- minissa Another fill with OF at 1519,drained 1522
23140 11 Aug 2022 @ 1515 --- minissa Main cone drained but atomizer still "leaking" as described.
23139 11 Aug 2022 @ 1506 --- minissa First visible water in cone, reaching OF at 1512. Noticed with binoculars in good sunlight that as the main cone filled, the "atomizer" cone has 3 areas from which thin but steady stream of water are running as the main cone filled
23138 11 Aug 2022 @ 1349 --- minissa Cone still empty but steaming lightly, crack is seeping. Have been observing for about an hour, does not look post-eruptive
22807 23 Jul 2022 @ 0920 --- deanl when I arrived at above 0920, Atomizer was attempting a quick comeback major but failed
22513 12 Jul 2022 @ 1300 12 Jul 2022 @ 1305 deanl It filled and spashed several times over this period, like it was trying to erupt. This was probably the 1st minor.
22512 12 Jul 2022 @ 1155 --- RMichaels First overflow.
22060 22 Jun 2022 @ 0850 --- RMichaels Most likely had a major sometime early this morning, but not sure exactly when. No water or even steam seen during brief observation.
22056 21 Jun 2022 @ 1701 --- RMichaels First overlow following major eruption.
21585 30 May 2022 @ 1301 --- Skookum In stream phase
20659 10 Jan 2022 @ 0950 --- mhvogel My first Atomizer eruption ever! I'm almost positive it was a minor. Saw it ie at 0950 erupting at about 10-15 feet then at 0953 it briefly stopped a minute later and came back on at 0956 and began erupting higher, maybe 20+ feet. I left a little after 1000 as I had to walk back to the VC. I read Scott Bryans book and it didn't mention anything about brief pauses in between minors.
19491 11 Sep 2021 @ 1845 --- William Very little steam from both cones.
19311 05 Sep 2021 @ 0645 --- William back cone in constant light steam
19263 03 Sep 2021 @ 1854 03 Sep 2021 @ 2015 William arrived at 18:54, first observed water in back cone at 19:03. did not erupt prior to my departure at 20:15.
19245 02 Sep 2021 @ 1353 --- William water rose quickly in the cone at this time but did not erupt. first water seen but only been here since 13:35.
19119 27 Aug 2021 @ 1945 --- LynnS No major yet
19120 27 Aug 2021 @ 1355 27 Aug 2021 @ 1855 LynnS Atomizer fid not erupt during this time. The only activity was periodic fill, overflow, and occasionally bubbling accompanied the overflow. By 1800 the overflow had been so frequent iand heavy that the area around and between the two cones stayed wet, even between periods of overflow.
19121 27 Aug 2021 @ 1155 27 Aug 2021 @ 1355 LynnS Atomizer did not have another eruption between 1023 and 1155. Atomizer was not watched from 1155 to 1355. It could have had a minor eruption during this time. It did not have a major eruption because water levels in the minor cone were visibly rising and falling when I returnedl at 1355 and neither cone was steaming at 1355.
19028 23 Aug 2021 @ 1701 23 Aug 2021 @ 1754 minissa Atomizer restarted previously described activity, which continued throughout Artemesia's eruption but ultimately resulted in no eruption. We did note that there are several small, seeping cracks around the base of the "atomizer" /right-hand cone rather than one as previously noted, and seepage occurred during the described activity in the main cone.
19020 23 Aug 2021 @ 1645 --- minissa On the last of OF of this cycle, distinct bubbling over vent x 20 sec followed by complete drain that has exceeded 10 minutes. Not sure whether to count this as a minor but prolonged drain is more what you'd expect following an eruption. Distinctly different from behavior of the previous hour where cone would fill, OF, recede a bit, OF multiple times before draining and where cone only remained empty for a few minutes.
19017 23 Aug 2021 @ 1615 --- minissa Left hand cone continues to oscillate with good OF alternating with complete drain and rapid refill, whole cycle first OF to first OF taking about 15 minutes . Right hand cone appears to have a crack at its base through which slight seepage is visible with binoculars {also reflecting the sun given the right angle}
19016 23 Aug 2021 @ 1605 --- minissa Pool had drained at 1558 but is now full and overflowing again
19015 23 Aug 2021 @ 1541 --- minissa Reached overflow, sustained high pool but no bubbling
18967 20 Aug 2021 @ 0737 --- William water high in atomizer cone
18526 19 Jul 2021 @ 1340 19 Jul 2021 @ 1400 nails No minor immediately before major.
18469 17 Jul 2021 @ 0851 17 Jul 2021 @ 1055 William some weak splashing within 10m of previous min but otherwise no water seen during this time.
18460 16 Jul 2021 @ 2030 --- William light continuous steam from back cone.
18288 06 Jul 2021 @ 0821 --- William first water observed since 07:00
18096 25 Jun 2021 @ 2001 25 Jun 2021 @ 2245 William some post play immediately after previous minor, but did not erupt during this time
17933 19 Jun 2021 @ 1913 19 Jun 2021 @ 1917 William blipped and splashed to 1' but did not erupt
17932 19 Jun 2021 @ 1806 --- William first water in cone observed since at least 17:15
17647 10 Jun 2021 @ 1923 10 Jun 2021 @ 2120 William no further action from Atomizer during this time
17374 02 Jun 2021 @ 1250 --- Bhoffer Post Major Eruption. In end of steam phase.
17369 02 Jun 2021 @ 0805 02 Jun 2021 @ 0900 William no water observed during this time
16876 17 Apr 2021 @ 0914 --- User34 Late steam
16450 22 Oct 2020 @ 1855 --- William first water seen in Atomizer after major earlier today.
16446 20 Oct 2020 @ 1646 20 Oct 2020 @ 1830 William first visible water in atomizer at 16:46 since major earlier today, no eruption before 18:30
16145 16 Sep 2020 @ 1851 --- William constant light steam coming from back cone
15925 31 Aug 2020 @ 2011 31 Aug 2020 @ 2030 William no attempt at quick comeback maj during this time.
15706 23 Aug 2020 @ 1042 23 Aug 2020 @ 1343 William no further action from atomizer during this time.
15558 13 Aug 2020 @ 1308 13 Aug 2020 @ 1643 minissa Some seepage from cone when we arrived but otherwise main cone remained completely empty during this time period
15451 07 Aug 2020 @ 1901 07 Aug 2020 @ 1920 William steady light steam from back cone. reduced to a trickle of steam by 19:20.
15106 25 Jul 2020 @ 2025 25 Jul 2020 @ 2028 William post eruptive splashing to 2'. Did not lead to major by 20:45
14690 20 Jun 2020 @ 1330 20 Jun 2020 @ 1429 User34 Intermittently overflowing
13821 27 Sep 2019 @ 1715 27 Sep 2019 @ 1945 William no further action from Atomizer during this timeframe.
13327 20 Aug 2019 @ 0915 20 Aug 2019 @ 1215 William no follow up activity since previously noted minor.
13322 20 Aug 2019 @ 0910 20 Aug 2019 @ 0912 William post eruptive splashing up to 1'.
13238 14 Aug 2019 @ 1618 --- minissa Water briefly resumed, thin column to a height of maybe 10 feet after I called the end of the eruption due to both cones end of steam. A bit more steam both cones x next 5 minutes
13237 14 Aug 2019 @ 1542 --- minissa Start of yet another fill
13236 14 Aug 2019 @ 1524 --- minissa Start of another fill
13235 14 Aug 2019 @ 1509 --- minissa Another sustained fill
13234 14 Aug 2019 @ 1454 --- minissa Sustained fill in progress with water sheeting cone
13233 14 Aug 2019 @ 1310 --- minissa Filled and drainef
13046 05 Aug 2019 @ 1300 05 Aug 2019 @ 1530 Stephen_Gemar No eruption during this time.
11782 14 Jun 2019 @ 0805 14 Jun 2019 @ 1010 Choward Completely inactive. No periods of overflow.
11708 10 Jun 2019 @ 1910 10 Jun 2019 @ 1911 William 1 ft water bursts every 3-5 seconds
9699 13 Aug 2018 @ 1425 --- minissa Water has been seeping from crack in cone for at least 30 minutes, progressing slightly (visible from path with binocs)
9516 07 Aug 2018 @ 1150 07 Aug 2018 @ 1430 c.barwin The only activity at this time was audible splashing and steam around 1210 and then no other activity when I left the area at 1430.
9510 07 Aug 2018 @ 1110 --- c.barwin skip after seeing visible water and steam
3769 16 Sep 2016 @ 1638 16 Sep 2016 @ 1722 bhoppe Overflows occurring about 15-20 minutes apart. No eruption witnessed
3153 29 Jun 2016 @ 0800 --- Barbara Lasseter Both cones steaming lightly
3097 19 Jun 2016 @ 0630 --- LynnS Finished the major before I arrived. Both cones still steaming. Faint steam from east cone. Forced steam from west cone. Forcefulness of Steam from west cone had decreased such that steam was just wafting when I left at 0630.
3085 17 Jun 2016 @ 0940 --- LynnS Post-eruptive; light steam wafting from eastern cone; light steam pushing from western cone.
3042 10 Jun 2016 @ 1041 10 Jun 2016 @ 1700 JSJ Dry and empty all late morning & afternoon. First overflow at 1700. Left after that.
2775 22 Apr 2016 @ 1220 --- WillBoekel full of water
2746 17 Apr 2016 @ 1110 --- WillBoekel in late steam phase
2417 24 Sep 2015 @ 0904 24 Sep 2015 @ 0930 ThomasR No further eruption.
1824 01 Jul 2015 @ 1645 --- Jake came to overflow a couple times leading to 2nd eruption. didn't erupt, drained. I left
1143 31 Jul 2014 @ 0945 --- Tara Atomizer post-major at 0945.
16579 17 Feb 1998 @ 1200 --- JarnoO {generic time}; post major steam
15256 01 Jul 1996 @ 0928 --- JarnoO steaming; post major
14371 30 Aug 1995 @ 0000 30 Aug 1995 @ 2359 JarnoO vr 4 minors
5510 08 Aug 1992 @ 0900 --- JarnoO before 0900
EntrySourceLinkComment
03 Aug 2016 @ 1433 JSJ https://www.youtube.com/watch?v=MY_Beiau8JQ Video clips of Atomizer Geyser's ~2:33 PM-onward major eruption on 3 August 2016.
31 Jul 1993 @ 1357 JSJ https://www.youtube.com/watch?v=nOmGUlTI3mE Video by David Schwarz of Atomizer Geyser's ~1357 minor eruption on 31 July 1993.
06 Jul 1995 @ 1253 JSJ https://www.youtube.com/watch?v=3hE3eGnk_1Y Video by David Schwarz of Atomizer Geyser's 12:53 PM major eruption on 6 July 1995.
16 May 2015 @ 1326 JSJ http://www.flickr.com/photos/jsjgeology/18510924194 Video of eruption.
16 May 2015 @ 1642 JSJ http://www.flickr.com/photos/jsjgeology/18946083648 Video of eruption.
16 May 2015 @ 1814 JSJ http://www.flickr.com/photos/jsjgeology/18513378633 Video of eruption.
Baseline does not exist.