Regional Conditions for Centennial Range

as of 5:00 am
Apr 270″ | N/A
Apr 26 0″ | N/A
Apr 25 0″ | N/A
8775′     3/27 at 10:00
17 ℉
SE - 4 mph
Gusts 7 mph
7750′   07/09 at 6:00
52℉
-1″ Depth
Bottom Line: Spring weather can be highly variable and create a mix of avalanche problems to watch out for. Snow conditions and snow stability can change drastically from day to day or hour to hour. Anticipate rapid change and plan accordingly. Abundant snowfall over the winter with more spring snow to come makes avalanches possible into summer.

Snow Observations- Centennial Range & Lionhead

Avalanche Activity- Centennial Range & Lionhead

Photos- Centennial Range & Lionhead

Displaying 41 - 80
  • "Very large and destructive deep slab just north of emigrant peak on a east-facing aspect. The debris likely ran over 1000 vertical feet and stopped towards the bottom right of the image. We think the smaller slide on the far right was triggered as a secondary slide as a result." Photo: T. Papritz

  • From IG #gnfacobs post: "An avalanche from early Tuesday (02/18) morning caused by a natural cornice fall. Note the step down partway down the path. ENE @ 9700. Ran 1300’." Photo: A. Whitmore

  • From IG #gnfacobs post: "An avalanche from early Tuesday (02/18) morning caused by a natural cornice fall. Note the step down partway down the path. ENE @ 9700. Ran 1300’." Photo: A. Whitmore

  • We rode into Lionhead and found good stability. A sledder highmarked up the hill and then came down right next to us, confirming our results. Wind-loading from yesterday is still a concern, and so are the facets near the ground, although less so than a couple weeks ago. Photo: GNFAC

  • "Noted two SS-D1.5/2 naturals (presuming based on lack of any sort of tracks) on Wheeler, typical spots for these conditions, both SE aspect around 8000'." Photo: G. Antoniolli

  • "Noted several avalanches (NW aspect ~ 8800') off of Elephant that traveled quite far into the trees where the summer trail typically runs, all appear to be new snow, D1- D2 in size, average 2' crowns, running on old/new interface from  Feb 2. They appear to have run midstorm, sometime yesterday (photos 1,2,3).  Above 9000', W Winds were crafting fresh wind slabs that were most reactive on a midstorm crystal/density change that buried a layer of stellars ~ 1' deep in shallower spots,  topped with denser snow." Photo: G. Antoniolli

  • "Natural avalanche. North facing slope. Around half mile wide. Photos don't show half of the slide. Broke on the ground facets. Crown was between 3 and 15 feet deep. We didn't get a photo of the deepest crown. Ripped trees out around 5" diameter." Photo: Reed Malmstrom

  • "Natural avalanche. North facing slope. Around half mile wide. Photos don't show half of the slide. Broke on the ground facets. Crown was between 3 and 15 feet deep. We didn't get a photo of the deepest crown. Ripped trees out around 5" diameter." Photo: Reed Malmstrom

  • On private property, this small child triggered a slide and climbed out of the debris, not buried. A very close call! On the heels of this large snowstorm there are possibilities of children getting caught on road cuts or any open hill!  Photo: Anonymous

  • We triggered this avalanche in the second Yellow Mule off Buck Ridge on 2/6/2020 It is on a small roll/cornice "in the flats". It broke within the current 2-3' storm snow. Photo: GNFAC

  • A snowmobiler triggered this avalanche in the second Yellow Mule off Buck Ridge on 2/6/2020 It is on a small roll/cornice "in the flats". It broke within the current 2-3' storm snow. Photo: GNFAC

  • We saw this natural crown that broke within the current 2-3' storm on a small terrain feature. It is in the second Yellow Mule off Buck Ridge on 2/6/2020. Photo: GNFAC

  • I took out my binoculars from our cabin on the west shore of Island Park Reservoir and noticed this huge slide in the bowl south of Reas peak. Started at the little tree band below the ridge, takes out 1/3 of the bowl, and runs into the Blue Creek terrain trap. I assume this is a natural avalanche as I don’t see tracks (hard to see in this light). Photo: M Elstad
  • I took out my binoculars from our cabin on the west shore of Island Park Reservoir and noticed this huge slide in the bowl south of Reas peak. Started at the little tree band below the ridge, takes out 1/3 of the bowl, and runs into the Blue Creek terrain trap. I assume this is a natural as I don’t see tracks (hard to see in this light). Photo: M Elstad
  • From riders involved: "Yesterday we were the ones in the big sky avalanche. There was no markings on the spot we were climbing. Further down the mountains there were climbs at the same angles of this slope. Thankfully the rider was above the slide when it started and managed to stay on top. Rider walked down the debris and we found the sled lower down in the trees. No injuries." Photo: Anonymous

  • From riders involved: "Yesterday we were the ones in the big sky avalanche. There was no markings on the spot we were climbing. Further down the mountains there were climbs at the same angles of this slope. Thankfully the rider was above the slide when it started and managed to stay on top. Rider walked down the debris and we found the sled lower down in the trees. No injuries." Photo: Anonymous

  • From obs. form: "[slope] Was marked up previously. We parked out near the bottom and a few guys not in our group start climbing. So we watch them climb. It breaks out. Guy ditches the sled and manages to stay up top. Sled goes down with the slide. Then the snow breaks in 2 other spots creating more slides." Photo: C. Carlson

  • The 10' deep avalanche in 2nd Yellowmule is almost completely filled in now. In its place are massive cornices overhanging the slope. Give these beasts a lot of extra room as they can break back far from the edge. Photo: GNFAC

  • Ian Hoyer stands in a snowpit in Beehive Basin. Avalanches are getting harder to trigger, but in more shallow areas we are still finding a poor snowpack structure. The stability test scores are climbing higher, but still propagating and we did not ski the adjacent slope. Photo: GNFAC

  • February 1, King and Queen of the Ridge at Bridger Bowl (fundraiser). This is the Friends of the Avalanche Center’s second biggest fundraiser of the year. Come on out and help us raise money by hiking and skiing laps on the ridge. Prizes, camaraderie and a good time is guaranteed. Register with Bridger to hike in the event, and create a pledge page to raise funds with your Ridge laps.

  • From email:

    "I wanted to make you aware of a snowmobile triggered slide in Lionhead today. Fortunately, I was not injured, was able to stay completely on top, climbed through the majority of the snow wash after seeing it begin to break, and relatively slowly slid down with the last of the moving snow while still on the machine. When I came to a stop, I stood up and was completely free of the snow. Our group is trained in avalanche safety, practiced beacon use prior to leaving town in the morning, were wearing avy gear, and were very fortunate that this ended up the way it did. 

    A clear reminder that this can happen to any of us and to be careful out there."

    Photo: Anonymous 

  • Snowmobiler triggered avalanche near Reas Peak on Sunday, 1/19/20. He was able to ride through it uphill. Photo: R. Gravatt

  • Snowmobiler triggered avalanche near Reas Peak on Sunday, 1/19/20. He was able to ride through it uphill. Photo: R. Gravatt

  • From obs: "I was on the west side of Pioneer Mtn digging a pit for YC Ski Patrol. I heard a few groups of snowmobiles cruising around the foothills of cedar. I turned and saw two snowmobilers cresting the ridge above the slide pictured as the debris was settling down. The sledders enjoyed the view for a few minutes before turning back the way they came and stumbled upon the slide they had unknowingly triggered. They skirted around the side of the crown and stopped for a few minutes. Based on the height of the rider off his sled, I would estimate the crown to be roughly 10’ at its max height. NE aspect below Cedar" Photo: J. Marcinko

  • With only 3" of new snow overnight, a cornice triggered a large avalanche at Lionhead early this morning. It broke 3 to 4 feet deep and propagated on a buried weak layer. This is the only stability test we need today, human triggered avalanches possible and the management strategy is to avoid steep slopes or be clear about your risk tolerance if you are poking into avalanche terrain. Photo: GNFAC

  • The snowpack in Lionhead is a respectable 6' deep. The facets near the ground are gaining strength and we were unable to get them to break in our tests. Stability is improving! Photo: GNFAC

  • We visited the avalanche that was triggered by a snowmobiler and partially buried 2 people on January 4th. The crown was 10 feet at the deepest part. Photo: GNFAC

  • We visited the avalanche that was triggered by a snowmobiler and partially buried 2 people on January 4th. The crown was 10 feet at the deepest part. Photo: GNFAC

  •  @carter.olson

  • From one of the riders that was caught, "The 3 persons involved were traveling across the slope about 20-30 yards up from the tree line parallel to the ridge line in the slide area when it broke, not high marking and not traveling uphill. One rider did increase his elevation while traveling across the slope but was never more than 1/4 of the way up when the slide was triggered."

  • A party of three skiers remote triggered avalanche with at least 6' crown off N face of Mt Porphry along rockband near summit on 12/29/19. They triggered it after tyhey had found "Three pits dug on NE face ascending Mt Porphry indicating increasing stability and no clean propagation. Approx 150-210 cm deep snowpack." Photo: G. Alsentzer

  • A natural avalanche observed on 12/26 from Lionhead Ridge. This slide likely broke during the storm on Christmas Eve. The avalanche is approximately 100 ft wide and on an east facing slope. It appears to have broken on a weak layer mid-pack.

    Photo: GNFAC

  • We dug this snowpit in Denny Creek at the base of Lionhead Ridge near West Yellowstone on 12/22. An poor snowpack structure makes large avalanches possible to trigger. Photo: GNFAC

  • We toured up to about 7700 feet on a NE facing aspect in the N Madison, upon entering the bottom of the meadow we had several large collapses and then one very large collapse that propagated 100+ feet uphill while on lower angle terrain below the steeper terrain Of the meadow above. We dug a pit, we got an ECTP 10. The pit was 75 cm deep, we found basal facets with an ice crust on top and About 40cm of denser 3-4 finger snow above the ice crust. Photo: A. Palombo

  • Riders saw these recent slides on 12/15 near Carrot Basin. Photo: A. Wheeler

  • Riders saw these recent slides on 12/15 near Carrot Basin. Photo: A. Wheeler

  • Riders saw these recent slides on 12/15 near Carrot Basin. Photo: A. Wheeler

  • An old avalanche crown on Lionhead Ridge, taken 12/14. Photo: G. Antonioli

  • Skiers at Targhee Pass near West Yellowstone reported: "We got a few good collapses while skinning up through east-facing low angle meadows, and got some serious cracking and collapsing while stomping on fresh wind pillows just below ridgeline on a northeast-facing slope at about 8200'. We dug down at one of the cracks and found a 35cm thick F+ slab that had failed on a layer of 4-6mm depth hoar. Cracks propagated close to 100'..." Photo: A. Schauer

Videos- Centennial Range & Lionhead

Weather Forecast- Centennial Range

Extended Forecast for

10 Miles ESE Lakeview MT

  • Today

    Today: Sunny, with a high near 68. South southwest wind 8 to 14 mph, with gusts as high as 24 mph.

    Sunny

    High: 68 °F

  • Tonight

    Tonight: Clear, with a low around 47. South southwest wind 6 to 11 mph, with gusts as high as 22 mph.

    Clear

    Low: 47 °F

  • Friday

    Friday: Sunny, with a high near 70. West southwest wind 7 to 14 mph becoming north northwest in the morning. Winds could gust as high as 24 mph.

    Sunny

    High: 70 °F

  • Friday
    Night

    Friday Night: Clear, with a low around 45. Southwest wind 7 to 9 mph becoming east northeast after midnight. Winds could gust as high as 20 mph.

    Clear

    Low: 45 °F

  • Saturday

    Saturday: Sunny, with a high near 73. Northeast wind 7 to 9 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.

    Sunny

    High: 73 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 49. South wind around 9 mph becoming east after midnight. Winds could gust as high as 20 mph.

    Mostly Clear

    Low: 49 °F

  • Sunday

    Sunday: Sunny, with a high near 73. East southeast wind 8 to 16 mph becoming southwest in the afternoon. Winds could gust as high as 30 mph.

    Sunny

    High: 73 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 47. West southwest wind 9 to 14 mph becoming north northwest after midnight. Winds could gust as high as 28 mph.

    Partly Cloudy

    Low: 47 °F

  • Monday

    Monday: Mostly sunny, with a high near 66.

    Mostly Sunny

    High: 66 °F

The Last Word

Thank you to everyone that sent in observations, read the advisories, took an avalanche class or donated money, time or gear. Our success is directly related to community support and the Forest Service. Have a safe and enjoyable spring and summer. See you next Fall!