Last Known Eruption
2d 8h 58m ago

Latest Eruptions

Eruption DurationInterval
24 Feb 2024 @ 2032 ie wc18h 54m
24 Feb 2024 @ 0138 ie wc1d 1h 34m
23 Feb 2024 @ 0004 ie wc1d 9h 55m
21 Feb 2024 @ 1409 ie wc2d 1h 59m
19 Feb 2024 @ 12101d 23h 46m
17 Feb 2024 @ 1224 ie wc5d 22h 14m
11 Feb 2024 @ 1410 ie wc1d 36m
10 Feb 2024 @ 1334 ie wc23h 55m
09 Feb 2024 @ 1339 ie wc23h 28m
08 Feb 2024 @ 1411 ie wc6d 2h 1m
02 Feb 2024 @ 1210 ie wc4d 7h 21m
29 Jan 2024 @ 0449 ie wc1d 3h 59m
28 Jan 2024 @ 0050 ie wc11d 12h 15m
16 Jan 2024 @ 1235 ie24d 21h 4m
22 Dec 2023 @ 1531 ie wc1d 1h 34m
21 Dec 2023 @ 1357 ie wc6d 22h 30m
14 Dec 2023 @ 1527 ie wc8d 9m
06 Dec 2023 @ 1518 ie wc10d 3h 52m
26 Nov 2023 @ 1126 ie wc1d 22h 47m
24 Nov 2023 @ 1239 ie wc1d 5h 6m
23 Nov 2023 @ 0733 ie wc4d 19h 11m
18 Nov 2023 @ 1222 ie wc22h 46m
17 Nov 2023 @ 1336 ns wc1d 5h 49m
16 Nov 2023 @ 0747 ie wc20h 29m
15 Nov 2023 @ 1118 ie wc1d 2h 23m
14 Nov 2023 @ 0855 ie wc2d 1h 45m
12 Nov 2023 @ 0710 ie wc22h 36m
11 Nov 2023 @ 0834 ie wc1d 42m
10 Nov 2023 @ 0752 ie wc2d 20h 46m
07 Nov 2023 @ 1106 ie wc1d 2h 33m
06 Nov 2023 @ 0833 ie wc1d 21h 47m
04 Nov 2023 @ 1146 ie wc20h 10m
03 Nov 2023 @ 1536 ie wc3d 2h 43m
31 Oct 2023 @ 1253 ie wc1d 9h 51m
30 Oct 2023 @ 0302 ie wc4d 3h 35m
25 Oct 2023 @ 2327 ie wc1d 2h 40m
24 Oct 2023 @ 2047 ns3d 8h 37m
21 Oct 2023 @ 1210 ? ie22h 54m
20 Oct 2023 @ 131626m 23h 55m
19 Oct 2023 @ 1321 ie wc2d 1h 9m
17 Oct 2023 @ 1212 ie wc1d 1h 0m
16 Oct 2023 @ 111229m 1d 34m
15 Oct 2023 @ 1038 ie wc22h 17m
14 Oct 2023 @ 1221 ie wc1d 17h 15m
12 Oct 2023 @ 190631.5m 2d 8h 45m
10 Oct 2023 @ 1021 ie19h 38m
09 Oct 2023 @ 1443~26m 23h 51m
08 Oct 2023 @ 1452~20m 4d 22h 27m
03 Oct 2023 @ 1625 ie wc1d 2h 51m
02 Oct 2023 @ 1334 ie wc23h 24m
01 Oct 2023 @ 141025m 48s 1d 5h 18m
30 Sep 2023 @ 0852 ie wc1d 2h 52m
29 Sep 2023 @ 0600 A1d 10h 10m
27 Sep 2023 @ 1950 ie wc1d 3h 18m
26 Sep 2023 @ 163227m 15s 1d 3h 5m
25 Sep 2023 @ 132724m 0s 21h 15m
24 Sep 2023 @ 161223m 15s 20h 49m
23 Sep 2023 @ 192321m 13s 3d 2h 47m
20 Sep 2023 @ 163626m 5s 19h 26m
19 Sep 2023 @ 2110 A17h 10m
19 Sep 2023 @ 0400 A1d 2h 0m
18 Sep 2023 @ 0200 A16h 10m
17 Sep 2023 @ 095022m 37s 22h 11m
16 Sep 2023 @ 113923m 15s 1d 1h 29m
15 Sep 2023 @ 101021m 45s 20h 18m
14 Sep 2023 @ 135224m 27s 1d 1h 52m
13 Sep 2023 @ 120025m 1d 30m
12 Sep 2023 @ 1130 A20h 48m
11 Sep 2023 @ 1442~21m 23h 6m
10 Sep 2023 @ 153630m 18s 1d 1h 29m
09 Sep 2023 @ 140724m 32s 1d 1h 18m
08 Sep 2023 @ 124923m 1d 2h 44m
07 Sep 2023 @ 1005 ie19h 46m
06 Sep 2023 @ 141924m 1d 4h 7m
05 Sep 2023 @ 101227m 16s 1d 21h 17m
03 Sep 2023 @ 1255 ie wc20h 42m
02 Sep 2023 @ 161317m 5s 23h 1m
01 Sep 2023 @ 1712 ie21h 30m
31 Aug 2023 @ 1942 ie2d 8h 6m
29 Aug 2023 @ 113620m 26s 23h 42m
28 Aug 2023 @ 1154 ie17h 42m
27 Aug 2023 @ 181222m 56s 22h 19m
26 Aug 2023 @ 1953 ie14h 53m
26 Aug 2023 @ 0500 A1d 8h 34m
24 Aug 2023 @ 2026 ie2d 1h 52m
22 Aug 2023 @ 183422m 15s 1d 1h 10m
21 Aug 2023 @ 1724272d 2h 5m
19 Aug 2023 @ 15191d 10m
18 Aug 2023 @ 150931m 1d 5h 1m
17 Aug 2023 @ 1008 ie20h 52m
16 Aug 2023 @ 1316 ie1d 33m
15 Aug 2023 @ 1243 ie19h 33m
14 Aug 2023 @ 171021m 1d 5h 58m
13 Aug 2023 @ 1112 ie1d 5h 42m
12 Aug 2023 @ 0530 A1d 19h 50m
10 Aug 2023 @ 094021m 5d 1h 9m
05 Aug 2023 @ 0831 ie3d 14h 3m
01 Aug 2023 @ 182828m 1d 6h 43m
31 Jul 2023 @ 1145 ie1d 14h 17m
29 Jul 2023 @ 212826m 1d 5h 44m

Interval Statistics

Interval Count100
Min14h 53m
Max24d 21h 4m
Mean2d 2h 41m
Median1d 2h 42m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
28864 18 Oct 2023 @ 1455 --- DanS In light overflow, looks like eruption was early this morning.
28615 03 Oct 2023 @ 1130 03 Oct 2023 @ 1400 ThomasR No eruption during this time. A halfhearted push ended at ~1400.
28602 01 Oct 2023 @ 0854 --- ThomasR No eruption yet
28521 27 Sep 2023 @ 1700 27 Sep 2023 @ 1830 ThomasR Arrived at 1700, pool in overflow, most likely hasn't erupted yet. Had a decent push at ~1800.
28406 21 Sep 2023 @ 1800 22 Sep 2023 @ 0200 ThomasR Most likely erupted in this timeframe. Pool in overflow at 0900.
28393 21 Sep 2023 @ 1655 --- ThomasR Still no eruption. Over 24h now.
28390 21 Sep 2023 @ 1345 --- ThomasR No eruption yet.
28108 08 Sep 2023 @ 0855 --- Dan A No eruption yet
28084 07 Sep 2023 @ 1029 --- Mike C ended at 1029
28030 05 Sep 2023 @ 0908 --- PamM Pool in overflow but Blinky has a huge smile
27878 31 Aug 2023 @ 0940 --- PamM Overnight eruption No time Pool filling
27871 30 Aug 2023 @ 1900 --- Dave W No eruption yet, as of 1900 when I left.
27867 30 Aug 2023 @ 1225 --- Darcie No eruption yet
27737 23 Aug 2023 @ 1633 --- Dan A Post eruptive, pool several feet down.
27603 14 Aug 2023 @ 2001 --- minissa About 6" below OF post 1710 eruption
27554 13 Aug 2023 @ 0834 --- MattV Pool full and in medium overflow when we arrived at 610. Italy full. Wu Tang and Apostrophe ~1/2” down. Pushed about 820, then the main pool crashed about 830 to well below overflow.
27534 11 Aug 2023 @ 2012 --- MattV Great push at 1820. Water dropped a fair amount at 1901. Still overflowing. Left 2047
27516 11 Aug 2023 @ 1013 --- MattV In overflow. Water below horseshoe and goose. Italy and Wutang about 1-1.5” below rim.
27476 09 Aug 2023 @ 1253 --- MattV Post eruptive. Pool low, well below sundress. No overflow. Runoff pretty dry. Probably went this morning.
27455 07 Aug 2023 @ 1805 --- MattV Multiple pushes while we sat the afternoon. Water levels good, but we were forced out by weather. Wouldn’t be surprised if it goes in the next little while.
27240 25 Jul 2023 @ 2345 --- deanl left it - no eruption yet. GREAT push at 2030, none after really
26879 07 Jul 2023 @ 0744 --- Deborah Overflow last night around 21:15. No overflow this morning at 7:44.
26697 27 Jun 2023 @ 0846 --- Graham In overflow
26341 15 Jun 2023 @ 1230 15 Jun 2023 @ 1415 CrisG no eruption yet. pool remains in overflow.
26153 08 Jun 2023 @ 1115 --- SantaFe108 24 hour mark, no eruption yet.
26119 07 Jun 2023 @ 1020 --- SantaFe108 No eruption yet.
25950 01 Jun 2023 @ 2045 --- RMichaels No eruption as of 2045.
25898 29 May 2023 @ 1911 --- User34 No eruption yet. Has been sitting at the same exact middle level for 2½+ hours
25636 21 May 2023 @ 0823 --- Graham Pool down a couple of feet.
25172 12 Apr 2023 @ 0955 --- mhreed Pool is just a couple inches below overflow.
24983 06 Feb 2023 @ 1419 --- Colin_W Pool looking full.
24952 26 Jan 2023 @ 1015 --- Colin_W Pool looking full.
24906 15 Jan 2023 @ 1026 --- Colin_W Pool looking full or at least more so than when I normally get here.
24645 06 Nov 2022 @ 1155 --- mhreed No eruption yet. 15 m of cord.
24639 04 Nov 2022 @ 1417 --- mhreed No eruption yet.
24146 28 Sep 2022 @ 1430 --- ThomasR No eruption yet
24132 27 Sep 2022 @ 0830 --- ThomasR Likely had no overnight eruption.
24049 24 Sep 2022 @ 0820 --- ThomasR Had no overnight eruption. Last eruption 22h 21m ago.
23928 20 Sep 2022 @ 0809 --- RLJones It is currently in overflow
23479 29 Aug 2022 @ 1200 29 Aug 2022 @ 2030 TLH Various gazers observed from noon until 20:30. Pool levels were good when we left at 20:30.
22669 15 Jul 2022 @ 1419 --- hkoenig [In Overflow]
22483 11 Jul 2022 @ 0811 --- Dan A No overnight eruption, earlier wc post was incorrect
22224 30 Jun 2022 @ 0825 --- Dan A Erupted overnight, pool below overflow
22074 23 Jun 2022 @ 0842 --- Dan A Erupted overnight, Italy, wu tang, apostrophe all low, pool in overflow.
21130 29 Apr 2022 @ 0700 29 Apr 2022 @ 1230 RMichaels Artemisia had pushes at about 0800, 0900, and 1000. The pool crashed around 1030 and never really came back up again until I left at 1230. Prevalent north wind throughout most of the morning.
20744 21 Jan 2022 @ 1625 --- BrandonC No eruption yet
20737 20 Jan 2022 @ 1405 --- BrandonC No eruption yet
20223 30 Oct 2021 @ 1444 --- DanS Pool low. Must have erupted earlier today.
19316 05 Sep 2021 @ 1325 --- Graham Post erupted, already started recovery.
19083 26 Aug 2021 @ 1252 --- music_geek Pool low, post eruptive.
18862 08 Aug 2021 @ 0629 --- eh no eruption yet
18097 25 Jun 2021 @ 2245 --- William did not erupt prior to this time.
17934 19 Jun 2021 @ 2100 --- WillBoekel no eruption yet
17750 13 Jun 2021 @ 1717 --- Craigmon99 2 feet below overflow
17661 11 Jun 2021 @ 0904 --- TheHikingDude High water, low boiling across the entire pool, about 2 inches from overflow
17466 04 Jun 2021 @ 2025 --- William high water
17464 04 Jun 2021 @ 1928 04 Jun 2021 @ 1955 William high water on arrival, dropped at 19:55
17365 02 Jun 2021 @ 0655 --- Mike C below overflow about 1 foot
15946 04 Sep 2020 @ 0004 --- BrandonC No eruption as of 0004
15924 31 Aug 2020 @ 1916 --- William water starting to rise
15893 29 Aug 2020 @ 1900 --- deanl water level was about 18-24" below overflow, so my guess is an eruption between 15 & 16:00.
15105 25 Jul 2020 @ 1950 --- William 1st overflow of sundress
14987 15 Jul 2020 @ 0600 15 Jul 2020 @ 0800 William No Arte overnight. high water at 07:10, low at 07:52
14752 28 Jun 2020 @ 0735 --- LynnS About 6-8 inches below the rim of the crater.
14739 26 Jun 2020 @ 1826 --- RLE Klammer Goose neck submerged as of 18:26
14713 22 Jun 2020 @ 1635 22 Jun 2020 @ 1833 RLE Klammer Pool at 16:35 was about 6-7 inches below rim. By 18:30, water was about 1 inch below rim, roughly estimate 1 1/2 inchs below gooseneck. No marmots.
13850 03 Oct 2019 @ 0728 --- RMichaels Pool looks like it has been in overflow for some time. Italy is full.
13848 02 Oct 2019 @ 1230 --- William Italy still down 1"
13687 14 Sep 2019 @ 0815 --- ThomasR Pool in overflow, but Little Italy not quite full yet. Possibly erupted around 0100 A.
13670 12 Sep 2019 @ 0800 12 Sep 2019 @ 1845 ThomasR No eruption during this time.
13655 12 Sep 2019 @ 0800 --- ThomasR No overnight eruption yet, pool is still overflowing.
13564 05 Sep 2019 @ 0630 05 Sep 2019 @ 0730 William No overnight eruption. Pushed around 07:15 but no eruption yet.
13532 04 Sep 2019 @ 0628 --- G$ Overflowing with Italy full. Does not appear to have erupted overnight
13506 02 Sep 2019 @ 1400 02 Sep 2019 @ 1845 Michael No eruption yet.
13483 01 Sep 2019 @ 0825 --- deanl erupted overnight - I'm guessing about 04:00
13459 30 Aug 2019 @ 0715 --- William Pool in overflow, most likely no overnight eruption.
13413 27 Aug 2019 @ 1000 --- ThomasR Had an overnight eruption. Pool was already in overflow, Little Italy was full, some other smaller pools weren’t full yet.
13353 22 Aug 2019 @ 1915 22 Aug 2019 @ 2100 William Pool full and water level high.
13345 22 Aug 2019 @ 0645 --- William Had overnight eruption. Pool is full, Italy 1 inch below rim.
13321 20 Aug 2019 @ 0710 20 Aug 2019 @ 0740 William Pool is high with gooseneck covered on pushes.
13304 18 Aug 2019 @ 0804 --- deanl Italy low and overflow into the "Creek". I'm guessing 02;00
13294 17 Aug 2019 @ 0414 --- JoeN looks to be in eruption, steam still seen as Grand erupted at 0424
13278 16 Aug 2019 @ 0605 --- RMichaels Pool is in high overflow.
13239 14 Aug 2019 @ 1655 --- minissa First OF . By which we mean first OF into pool on left of formation that is below pool shaped like a rough pentagon. Very close to OF into trapezoid pool next to horseshoe. End of Artemesia was 1346, so 3 hours 9 minutes from end of eruption to first OF, 3 hours 27 minutes from start of eruption to first OF. Hoping we can get a closed interval and compare OF length to total interval length. We have photos documenting progress low water to OF, will post
13232 14 Aug 2019 @ 1309 --- minissa Arrived about 20 minutes ago to find horseshoe and gooseneck well covered, some bubbles from point and to right of point
13221 13 Aug 2019 @ 2105 --- RMichaels Pool had been high for 30 min. before I left due to darkness. No eruption yet.
13200 12 Aug 2019 @ 2055 --- RMichaels Pool overflowing and cycling. No eruption yet.
13193 12 Aug 2019 @ 1615 12 Aug 2019 @ 1655 William nice overflow and runoff down back channels. Had two decent pushes that covered horseshoe and wet but did not cover the goose's body. Treeline channel wet and right channel flowing lightly.
13189 12 Aug 2019 @ 1031 --- RMichaels Start of overflow.
13188 12 Aug 2019 @ 0755 --- JoeN looked like Artemisia at 0252 on GOSA overnight which would agree with RM's note. With it being that dark it would be only a guess.
13187 12 Aug 2019 @ 0751 --- RMichaels Pool is about 8 inches below overflow. Likely erupted very early in the morning.
13150 10 Aug 2019 @ 1650 --- William post eruptive. pool down 1 1/2 to 2 feet from overflow and rising. Italy about 1/2" from rim.
13143 10 Aug 2019 @ 1105 --- RMichaels Pool in light overflow.
13089 07 Aug 2019 @ 0905 --- William had overnight eruption. pool is full with light overflow.
13041 05 Aug 2019 @ 0600 05 Aug 2019 @ 1300 William Arte being Arte... in moderate to heavy overflow at arrival with horseshoe and gooseneck covered throughout observation.
12800 26 Jul 2019 @ 0730 --- William No overnight eruption. pool in overflow with moderate runoff.
12787 23 Jul 2019 @ 1445 --- K.Cooper Something was erupting in this area at this time, however, it is unknown whether it was Atomizer or Artemisia
12566 23 Jul 2019 @ 0719 --- Casey An earlier post indicated an eruption at this time. An observation of the pool ~2 hours later seems to indicate a far earlier eruption.
12537 20 Jul 2019 @ 0830 20 Jul 2019 @ 0955 William Pool in overflow, horseshoe not yet covered upon arrival. water slightly better by end time but still light overflow.
12515 18 Jul 2019 @ 1215 18 Jul 2019 @ 2115 William in moderate overflow upon arrival. no eruption.
EntrySourceLinkComment
05 Sep 2019 @ 0910 Michael https://darksky.net/details/44.4618,-110.8369/2019-9-05/us12/en Weather on 2019-09-05 at Old Faithful, WY according to Dark Sky Time Machine
27 Jul 2019 @ 0702 Michael https://darksky.net/details/44.4618,-110.8369/2019-7-27/us12/en Weather on 2019-07-27 at Old Faithful, WY according to Dark Sky Time Machine
10 Aug 2019 @ 0727 Michael https://darksky.net/details/44.4618,-110.8369/2019-8-10/us12/en Weather on 2019-08-10 at Old Faithful, WY according to Dark Sky Time Machine
05 Sep 2019 @ 0910 Michael https://youtu.be/N_1tIxoKIaU?t=1094 Old Faithful Geyser Streaming Webcam Capture of 2019-09-05 @ 0911:56
27 Jul 2019 @ 0702 Michael https://youtu.be/P7HwyIOtUpU?t=1522 Old Faithful Geyser Streaming Webcam Capture of 2019-07-27 @ 0654:00
10 Aug 2019 @ 0727 Michael https://youtu.be/NuegRYu7l1g?t=446 Old Faithful Geyser Streaming Webcam Capture of 2019-08-10 @ 0724:34
16 May 2015 @ 1141 JSJ https://www.flickr.com/photos/jsjgeology/18179663412 Photo (1 of 19) of Artemisia Geyser's 11:41 AM to 12:08 PM eruption on 16 May 2015.
14 Aug 2014 @ 1154 JSJ https://www.flickr.com/photos/jsjgeology/15465524472 Photo (1 of 6) of Artemisia Geyser's 11:54 to 12:18 PM eruption on 14 August 2014.
01 Sep 2012 @ 1453 JSJ https://www.youtube.com/watch?v=GM2_GU13R0w Video by Will Boekel of Artemisia Geyser's 2:53 to 3:21 PM eruption on 1 September 2012.
14 Aug 2014 @ 1154 JSJ https://www.youtube.com/watch?v=qAQZfQVyU98 Video of Artemisia Geyser's 11:54 AM to 12:18 PM eruption on 14 August 2014.
16 May 2015 @ 1141 JSJ https://www.youtube.com/watch?v=s-NNSHy25Qw Video of Artemisia Geyser's 11:41 AM to 12:08 PM eruption on 16 May 2015.
21 Aug 2014 @ 2033 kcmule http://www.coloradobills.com/yellowstone/ART2033.08212014.flv
Baseline does not exist.