Last Known Eruption
1d 1h 43m ago

Latest Eruptions

Eruption DurationInterval
24 May 2024 @ 09566d 13h 31m
17 May 2024 @ 20258m
17 May 2024 @ 20177d 4h 40m
10 May 2024 @ 15372h 17m
10 May 2024 @ 13203h 50m
10 May 2024 @ 09309d 38m
01 May 2024 @ 08528d 12h 22m
22 Apr 2024 @ 203013h 5m
22 Apr 2024 @ 072524d 22h 27m
28 Mar 2024 @ 0858 wc40d 1h 25m
17 Feb 2024 @ 0633 wc2h 31m
17 Feb 2024 @ 0402 wc5m 27d 16h 2m
20 Jan 2024 @ 1200 A3h 43m
20 Jan 2024 @ 081710d 23h 52m
09 Jan 2024 @ 08255d 15h 15m
03 Jan 2024 @ 17102d 9h 29m
01 Jan 2024 @ 07411h 52m
01 Jan 2024 @ 05494d 14h 8m
27 Dec 2023 @ 1541 wc37d 7h 21m
20 Nov 2023 @ 0820 wc36d 22h 44m
14 Oct 2023 @ 103625d 13h 29m
18 Sep 2023 @ 2107 ie3d 12h 58m
15 Sep 2023 @ 08096d 23h 19m
08 Sep 2023 @ 085021h 37m
07 Sep 2023 @ 11138d 18h 43m
29 Aug 2023 @ 16301d 46m
28 Aug 2023 @ 1544 wc2d 18h 56m
25 Aug 2023 @ 2048 wc11d 11h 3m
14 Aug 2023 @ 094544d 19h 0m
30 Jun 2023 @ 1445 A9d 6h 10m
21 Jun 2023 @ 0835 wc2d 12h 35m
18 Jun 2023 @ 20003d 5h 50m
15 Jun 2023 @ 14106d 4h 31m
09 Jun 2023 @ 09391d 18h 48m
07 Jun 2023 @ 1451 A4d 21h 51m
02 Jun 2023 @ 1700 wc5d 6h 1m
28 May 2023 @ 10591h 59m
28 May 2023 @ 0900 A1d 2h 50m
27 May 2023 @ 061011d 16h 10m
15 May 2023 @ 14002h 0m
15 May 2023 @ 1200 A10d 18h 0m
04 May 2023 @ 1800 E10d 18h 45m
23 Apr 2023 @ 2315 wc2d 9h 45m
21 Apr 2023 @ 13305h 30m
21 Apr 2023 @ 080026d 12h 31m
25 Mar 2023 @ 1929 wc13d 16h 30m
12 Mar 2023 @ 015915d 23h 46m
24 Feb 2023 @ 0213 wc56d 8h 48m
29 Dec 2022 @ 1725 ns wc53d 17h 25m
06 Nov 2022 @ 01004d 17h 0m
01 Nov 2022 @ 08007d 26m
25 Oct 2022 @ 07349d 21h 45m
15 Oct 2022 @ 09491h 49m
15 Oct 2022 @ 08006d 22h 4m
08 Oct 2022 @ 095610d 3h 31m
28 Sep 2022 @ 06251d 21h 0m
26 Sep 2022 @ 09252d 19h 10m
23 Sep 2022 @ 1415 A15m
23 Sep 2022 @ 14006h 46m
23 Sep 2022 @ 071413h 11m
22 Sep 2022 @ 18034d 11h 6m
18 Sep 2022 @ 0657 A15s 6d 23h 27m
11 Sep 2022 @ 0730 wc17d 10h 15m
24 Aug 2022 @ 21155d 13h 15m
19 Aug 2022 @ 080011d 1h 3m
08 Aug 2022 @ 06573d 13h 14m
04 Aug 2022 @ 1743 A19h 6m
03 Aug 2022 @ 223730d 22h 37m
04 Jul 2022 @ 000011h 45m
03 Jul 2022 @ 12152d 1h 30m
01 Jul 2022 @ 1045 A22h 45m
30 Jun 2022 @ 1200 A1d 1h 33m
29 Jun 2022 @ 1027 ie1d 23h 23m
27 Jun 2022 @ 11045d 4h 7m
22 Jun 2022 @ 0657 A wc3d 6h 57m
19 Jun 2022 @ 000015h 11m
18 Jun 2022 @ 08494d 19h 15m
13 Jun 2022 @ 13343h 19m
13 Jun 2022 @ 10152m
13 Jun 2022 @ 10133d 23h 2m
09 Jun 2022 @ 11112d 15h 9m
06 Jun 2022 @ 20021d 6h 2m
05 Jun 2022 @ 1400 A3h 10m
05 Jun 2022 @ 1050 A35m
05 Jun 2022 @ 1015 A18m
05 Jun 2022 @ 09571d 23h 22m
03 Jun 2022 @ 103511m
03 Jun 2022 @ 10242d 22h 50m
31 May 2022 @ 11342d 20h 39m
28 May 2022 @ 14556h 55m
28 May 2022 @ 08006d 36m
22 May 2022 @ 07241d 12h 4m
20 May 2022 @ 192011h 33m
20 May 2022 @ 074711d 21h 29m
08 May 2022 @ 1018 wc2d 2h 18m
06 May 2022 @ 08008d 13h 5m
27 Apr 2022 @ 185545d 15h 55m
13 Mar 2022 @ 030012d 2h 0m
01 Mar 2022 @ 000016d 21h 18m
12 Feb 2022 @ 024257m

Interval Statistics

Interval Count100
Min2m
Max56d 8h 48m
Mean8d 7h 45m
Median3d 13h 6m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
34607 18 May 2024 @ 0930 --- Janet Jones Ice out is underway. Lots of ice also piled up at MaryBay and Sedge Bay.
34555 14 May 2024 @ 1451 --- BigSkyKatie griz sow with two 2nd year cubs crossed from Castle area to just east of Grand then turned eastward and disappeared into trees going in the direction of the Lion Group
34552 14 May 2024 @ 1247 --- Lizzysa Has stopped snowing
34513 10 May 2024 @ 1630 --- Tara 3 bears seen along edge of trees north of Thud Group, probably the same 3 grizzlies from this morning.
34496 10 May 2024 @ 1135 --- Tara Sow grizzly with 2 near-grown cubs foraging in the meadow near Mary Mountain TH. (edit: originally said 3 cubs, sorry about the typo)
34275 20 Apr 2024 @ 1500 --- RMichaels OF bike path has been plowed and is rideable down to Fan and Mortar.
34274 19 Apr 2024 @ 1135 --- MAB NGB: NUPHAR FULL within maybe ~20-30ft of Trail Closed sign - not much steam from atop Porcelain Terrace indicating flow into the lake but that whole visit was tough to see due to swirling steam - possibly some changes near Grindstones and the 1970s blowouts and whatever I tried I could not photograph - need a warmer day
34207 18 Apr 2024 @ 1740 --- aferrara Energetic steam vent north of Wall Pool occasionally spritzing water. Another small boiling feature further north.
34159 05 Apr 2024 @ 1053 --- ltgangi Grizzly bear on geyser hill. mostly in woods but did walk boardwalk across the back towards aurum and then back on ground. One or two bison were around and it didnt seem like it wanted to share space with them. Lost him when he walked deeper into the woods.
34061 22 Feb 2024 @ 0915 --- aferrara Visitors reported wolves howling near Pipeline Meadows
34060 22 Feb 2024 @ 0828 --- Kat Wolves noted in front of Oblong (07:58) followed as they walked the boards to the hill. There was a small rally in front of Lion, wolves exited the view to the rIght of Dome. Count of 12. Appears to be Wapitis
33029 18 Dec 2023 @ 1412 --- JarnoO Webcam functioning again
32728 12 Dec 2023 @ 1341 --- JarnoO (wc) Low helicopter flyby
32064 04 Dec 2023 @ 1501 --- JSJ YNM station is finally online.
29489 05 Nov 2023 @ 0100 --- DaveM MST, Mountain Standard Time started. MDT ended at 02:00.
28896 20 Oct 2023 @ 1324 --- Betty Webcam is back on
28895 20 Oct 2023 @ 1049 --- OFVEC Webcam is down
28618 04 Oct 2023 @ 0919 --- JarnoO (wc) Helicopter flew across the background while cam was on Old Faithful
28551 29 Sep 2023 @ 1915 29 Sep 2023 @ 1930 ThomasR Wolf pack at Fountain Flat easily viewable from road.
28523 28 Sep 2023 @ 0710 --- CraigC Bull elk west of Firehole Lake Drive South gate.
28476 26 Sep 2023 @ 1100 --- Tara Group of 4 otters fishing and playing in the Firehole at the small cascade near Cascade
28336 18 Sep 2023 @ 2110 --- OFVEC Northern lights visible in the UGB. International Space Station passed over Old Faithful at 2125
28318 17 Sep 2023 @ 1805 --- SantaFe108 Surprise Pool's runoff has built a nice mineral terrace on the sidewalk and in the road on Firehole Lake Dr.
28122 08 Sep 2023 @ 0815 --- Pat Snyder Two large bison herds (moms and youngsters) moving through Fountain Flats causing a traffic jam. They were heading towards Fountain.
27774 25 Aug 2023 @ 1330 --- LynnS A trash bin has been placed at the Fairy Falls trailhead.
27714 21 Aug 2023 @ 1645 --- Tara Heavy downpour in UGB with hail and gusty winds, lasted about 10 minutes.
27387 02 Aug 2023 @ 1412 --- Polly “YNP: North bound road from Old Faithful is now open for all travel.”
27385 02 Aug 2023 @ 1111 --- Polly “YNP: West Thumb Junction to Old Faithful is now open. The northbound lane from Old Faithful to Madison remains closed.”
27384 02 Aug 2023 @ 1020 --- Polly “YNP: Temporary road closure from Madison Junction, south, to West Thumb Junction due to hazards on roadway. Notification will be sent once safe”
27380 02 Aug 2023 @ 0613 --- EmilyW Drive in from west has an absurd amount of debris from the construction. Starts before fountain flats. Horrendous between grand prismatic overlook and biscuit.
27372 01 Aug 2023 @ 0615 --- JarnoO Per this month's Yellowstone update: "A small section of boardwalk between Sponge Geyser and Doublet Pool remained closed during July due to the proximity of thermal features that had been spattering hot water and some debris onto the pathway, but that closure will be lifted soon." Materialized August 29 per in-basin entry.
27309 28 Jul 2023 @ 2120 --- SantaFe108 Driving NB out of Norris, very strong sulfuric smell coming from the basin.
27239 26 Jul 2023 @ 0040 --- ypcaribou Norris GB. Smelled very sulfury as he drove by southbound from Norris junction. (As in a noticeable increase in odor.)
27135 20 Jul 2023 @ 1944 20 Jul 2023 @ 2005 cb STRONG HEAVY hail storm at Norris. Dime sized hail that turned the ground white in a matter of a few minutes followed by heavy rain.
27113 18 Jul 2023 @ 1600 --- JarnoO Per NPS news release, West Thumb will be closed between July 19 0600 and at least July 20 1800 "for road improvements". Delays up to 30 minutes expected.
27078 16 Jul 2023 @ 0055 --- JSJ Shock waves from a magnitude 7.2 subduction zone earthquake that hit south of the Alaskan Peninsula arrived at Yellowstone's seismic network.
26960 09 Jul 2023 @ 1200 --- Brando North Rim Drive is closed right now to all traffic. Cones and a ranger are blocking entry. Medical emergency. I hope whoever it is is ok.
26959 09 Jul 2023 @ 1100 --- Brando Campsite 4D3 at Ice Lake has 3 bars of Verizon service. Was able to send and receive texts
26810 03 Jul 2023 @ 1900 --- Ben VL This afternoon's rain and wind knocked over two trees in the grotto group and they are blocking most of the bike trail.
26644 24 Jun 2023 @ 1540 --- Polly Hailstorm #4 in the last 24 hours. This one came with a downpour and close lightning.
26643 24 Jun 2023 @ 1115 24 Jun 2023 @ 1210 steve At least 12 groups (40+ people) out in the Sprinkler group, Kaleidoscope group, and around Morning Geyer. It started with 2 people and then went crazy.
26634 24 Jun 2023 @ 1000 --- Tara Trail between Old Faithful and Geyser Hill closed due to bison sleeping next to path.
26609 23 Jun 2023 @ 0751 --- Polly Bull elk in the meadow upstream from Sprinkler. At 0754 heading into the trees towards Castle.
26574 21 Jun 2023 @ 1541 --- JSJ Three fighter jets flew over the Lower Geyser Basin - fairly loud.
26571 21 Jun 2023 @ 1358 --- JSJ Excellent, tall, well-developed steamnado originating from Deep Blue Geyser in the Kaleidoscope Group.
26400 17 Jun 2023 @ 1730 --- Craigmon99 Bear jam plus one lane closure plus peak leaving park time. Traffic at a standstill for miles
26356 16 Jun 2023 @ 1103 --- BobInNV closure between doublet and sponge has newly installed wood frame attached to bw for danger signs. moved the signs 30 feet? farther from doublet and snowglobes
26305 14 Jun 2023 @ 1811 --- bhoppe grizzly bear headed toward Artemisia trailhead at Biscuit Basin, moving eastbound
26254 12 Jun 2023 @ 0552 --- Darcie Bear on the Daisy bike trail across the river from Artemisia
26173 08 Jun 2023 @ 1933 --- K.Cooper One of the boards on the Lion bench has completely rusted off, will need nails and stuff to repair
26160 08 Jun 2023 @ 1332 --- SantaFe108 Carcass ~50 feet behind Inkwell Spring.
26130 07 Jun 2023 @ 1800 --- SantaFe108 Black bear ran across path next to Spa heading towards Daisy.
26112 07 Jun 2023 @ 0706 --- Brando The road outside the East Gate of Yellowstone is open
26100 06 Jun 2023 @ 2121 --- Brando YNP: Road east of Yellowstones east gate closed due to a mudslide.
26102 06 Jun 2023 @ 1835 --- Tara Bear jam just south of Fairy Falls trailhead, sow grizzly & 2 cubs on the west slope above the Firehole.
26093 06 Jun 2023 @ 1306 --- DaveM Streaming webcam is being updated. Streaming expected to return in a couple days.
26054 05 Jun 2023 @ 1305 --- SantaFe108 V-22 Osprey made a low pass over the UGB.
26064 05 Jun 2023 @ 0840 --- Colin_W Bear went from Castle to woods near Grand 8:40ish.
26008 04 Jun 2023 @ 1130 --- SantaFe108 Bison carcass behind Link.
25987 03 Jun 2023 @ 2054 --- Tara Grizzly sow and cub ran across road in front of my car just near the Daisy Trail south of Biscuit Basin.
25983 03 Jun 2023 @ 1800 --- ge Boardwalk closure on the hill expanded to Doublet Pool
25927 31 May 2023 @ 0940 --- Art The boardwalk is closed in the area near UNNG-GHG-17 (Between Sponge & Doublet)
25902 30 May 2023 @ 0849 --- JimS Firehole lake drive is closed
25841 28 May 2023 @ 1330 --- aferrara Observation Point/Solitary Geyser trail closed
25643 21 May 2023 @ 1354 --- bbev Three squirrels in a tree at Norris.
25638 21 May 2023 @ 0947 --- Brando 5 adult Buffalo and 2 red dogs by trail near Castle
25626 20 May 2023 @ 2055 20 May 2023 @ 2056 SantaFe108 Loud firework/gunshot heard in the UGB. Another at 2056.
25612 20 May 2023 @ 1951 --- Brando There is a Buffalo 10 feet off the trail by Castle
25579 20 May 2023 @ 1048 --- SantaFe108 Two tourists attempted to let their dog use the restroom in the northeast side of the Myriad Group. They quickly returned to the road after being spotted.
25568 20 May 2023 @ 0944 --- SantaFe108 Two bison laying down at the Terra-Cottas. One of them is laying down within a couple feet of the geysers!
25561 20 May 2023 @ 0854 --- SantaFe108 Bison jam east of 7 Mile Bridge. Eastbound side backed up for miles.
25553 19 May 2023 @ 1835 --- Tara pair of sandhill cranes flew across the meadow west of the Fountain Group, calls easily audible
25547 19 May 2023 @ 1039 --- BobInSLC boardwalk between lion and sawmill open
25511 18 May 2023 @ 0615 --- Graham Zero to one bar with Verizon at Fountain. GT currently syncing. Did not sync between 0620 and 0649. Occasional sync. 0705 to 0741 no sync. Signal seems best if I leave phone on a post pointing toward Kaleidescope group. 0900 sync stopped for the rest of the day through 1730 when I left.
25502 17 May 2023 @ 1850 --- Tara There will be planned power outage at Old Faithful tomorrow, May 18, from 1000 until 1400 for maintenance on the power lines. This includes the OF Inn so the webcam will be offline during that time.
25477 15 May 2023 @ 2040 --- ypcaribou There is soooo much bison poop in Norris Back Basin - especially on the walkways. More than I recall for any spring recently. Noting also that we had much more snow last winter - the most since at least 2014.
25447 14 May 2023 @ 2121 --- Brando The road over Craig Pass from West Thumb to Old Faithful is open to all travel. Still no news on the incident at this time.
25442 14 May 2023 @ 1915 --- SantaFe108 Lone bull bison in the center of the Biscuit Basin boardwalk loop.
25402 13 May 2023 @ 1927 --- Brando The road over Craig Pass from Old Faithful to West thumb is closed due to a law enforcement incident. Whatever that may mean.
25386 12 May 2023 @ 0000 --- JarnoO If someone could turn off the car with two flashing red lights (from webcam perspective) N of the lamp post at 44°27'38.8"N 110°49'54.9"W, that would be greatly appreciated. That disco light is very distracting, moreso than virtually no visibility into the basin, especially since it's continuously doing it.
25379 10 May 2023 @ 1130 --- SantaFe108 The Yellowstone National Park Research Coordinaton Network website is functional again following the cyberattack at Montana State University.
25347 06 May 2023 @ 1734 --- SantaFe108 Coyote came down behind Grand, then walked to Rift and crossed the boardwalk by Bulger. It then walked to Churn and left my view.
25334 06 May 2023 @ 1350 --- Tara There are what appear to be the remains of a coyote--only bones and fur left--in Fountain's runoff channel approx 15 feet above Spasm, situated on its back with snout pointing east
25329 05 May 2023 @ 2331 06 May 2023 @ 0006 Delta4Heavy85 Aurora Borealis visible on GOSA overnight capture.
25323 04 May 2023 @ 2145 05 May 2023 @ 0100 mwolf big peak on tantalus creek gauge. topping out at 17.2 Cfs. no accompanying seismic signal. it was raining in gardiner last night but doesnt look like rain. maybe ice dam breaking?
25319 04 May 2023 @ 0900 --- Tara Just an FYI since I have not seen this reported yet: there is road construction taking place between Old Faithful and just north of Biscuit Basin. It appears to be a continuation of the work on Craig Pass last year. At the spot where there was that prominent bump north of Biscuit, there is work underway with one lane closed and a pilot car. My wait there was about 15 minutes.
25295 30 Apr 2023 @ 1432 --- SantaFe108 Heart Spring's sign is still missing since September, Lion's sign is missing, and North Goggle's sign has snapped off its mount and is laying against the boardwalk.
25293 30 Apr 2023 @ 1420 --- SantaFe108 Two bison up the slope east of Geyser Hill.
25278 30 Apr 2023 @ 1052 --- SantaFe108 Group of bison next to UNNG-MGB-1 "Perfect Plume Geyser".
25234 23 Apr 2023 @ 2323 --- DaveM Bright aurora tonight
25150 11 Apr 2023 @ 1526 --- Betty Streaming webcam is back up
25142 07 Apr 2023 @ 2010 --- DanS Both UGB webcams were non-operational all day
25141 06 Apr 2023 @ 1749 --- DanS Both UGB webcams were non-operational all day
25140 05 Apr 2023 @ 1859 --- DanS Both UGB webcams were non-operational all day
25139 04 Apr 2023 @ 1816 --- DanS Both UGB webcams were non-operational all day
25138 03 Apr 2023 @ 1644 --- DanS Both UGB webcams were non-operational all day
25137 02 Apr 2023 @ 1743 --- DanS Both UGB webcams were non-operational all day
25136 01 Apr 2023 @ 2035 --- DanS Both UGB webcams were non-operational all day
25135 31 Mar 2023 @ 1936 --- DanS Both webcams were non-operational all day
25132 30 Mar 2023 @ 1645 --- DanS Both webcams were non-operational all day
EntrySourceLinkComment
01 Jan 2024 @ 0741 JSJ https://www.flickr.com/photos/jsjgeology/53436505760 Old Faithful seismogram showing a magnitude 3.1 earthquake that hit south of Nez Perce Creek & east-northeast of Morning Mist Geyser at 7:41 AM on 1 January 2024.
04 Apr 2023 @ 1532 Art http://google.com Test attachment is a little more test
28 May 2021 @ 1105 TheHikingDude https://www.idahostatejournal.com/freeaccess/bear-attacks-injures-hiker-in-yellowstone-national-park/article_cc865f52-44e9-5984-a5db-67b716ae3330.html News story about the attack
13 Aug 2020 @ 1638 JarnoO https://www.youtube.com/watch?v=cvTpiqnDUrw As seen from the webcam, by JoeN.
24 Jul 2020 @ 2109 JSJ https://www.flickr.com/photos/jsjgeology/50150440172 Maple Creek & Parker Peak seismograms (both are in the Yellowstone seismic network) showing a magnitude 4.7 quake that hit Canada's Mackenzie Mountains at 9:05 PM on 24 July 2020.
22 Jul 2020 @ 0019 JSJ https://www.flickr.com/photos/jsjgeology/50139308603 Six Yellowstone area seismograms showing the 7.8 magnitude earthquake that hit Alaska in July 2020.
19 Jul 2020 @ 1803 JSJ https://earthquake.usgs.gov/earthquakes/eventpage/us7000arda/executive Info. on the 4.5 Indonesia quake.
16 Jul 2020 @ 2352 JSJ https://www.flickr.com/photos/jsjgeology/50121418628 Seismogram (& caption with info.) showing the Iquique, Chile earthquake.
16 Jul 2020 @ 2104 JSJ https://www.flickr.com/photos/jsjgeology/50121067198 Maple Creek Station seismogram (& caption with info.) showing shock waves from the Papua New Guinea 7.0 earthquake.
15 Jul 2020 @ 0246 JSJ https://www.flickr.com/photos/jsjgeology/50116768308 Seismogram & caption with info. on a cluster of three small quakes that hit the West Thumb area on 15 July 2020.
10 Jul 2020 @ 0215 JSJ https://www.flickr.com/photos/jsjgeology/50096176923 Maple Creek seismogram showing three Sawtooth Range, Idaho earthquakes (magnitudes 4.0, 4.0, and 3.0) in the early morning of 10 July 2020.
09 Jul 2020 @ 2005 JSJ https://www.flickr.com/photos/jsjgeology/50095690968 Maple Creek seismogram showing a Sawtooth Range, Idaho earthquake of magnitude 3.0.
08 Jul 2020 @ 0413 JSJ https://www.flickr.com/photos/jsjgeology/50091106726 Maple Creek seismogram showing a 2.9 earthquake in Idaho's Sawtooth Range at 4:13 AM on 8 July 2020.
23 Jun 2020 @ 0935 JSJ https://www.flickr.com/photos/jsjgeology/50038010981 Little Thumb Creek seismogram showing the Oaxaca, Mexico 7.4 magnitude earthquake on 23 June 2020.
06 Mar 2020 @ 0756 JoeN https://youtu.be/IaWtdjw2_O0 wolves video
25 Jan 2020 @ 0711 JoeN https://youtu.be/e2CLw5oRcY8 Wolves!!
10 May 2019 @ 0926 EricZ https://youtu.be/oyJwcVrNQfs Joe's Video capture of the Bear crossing from Bridge, up past Tardy and off into the trees past spasmodic.
17 May 2017 @ 2051 Art https://youtu.be/phEF5zQVnyY?t=4h5m12s Camera Capture 4:05
26 Mar 2017 @ 1000 DaveM https://www.youtube.com/watch?v=Td65Xa2Rucc video from webcam
09 Feb 2015 @ 0851 Betty https://www.youtube.com/watch?v=g3r6DCrNU90 nice video of DaveM
Baseline does not exist.