Regional Conditions for Lionhead Range

as of 5:00 am
Oct 190″ | 5-10 NW
Oct 18 0″ | N/A
Oct 17 0″ | N/A
8775′     /00 at :
- mph
Gusts mph
7750′   10/20 at 4:00
31℉
0″ Depth
Bottom Line: Avalanches have caught and injured skiers, hunters, and climbers during the early-season. Travel and prepare for avalanches like you would in the middle of winter.

Past 5 Days

Fri Apr 27

None
Mon Apr 30

None
Wed May 2

None
Fri Oct 5

None
Fri Oct 12

None

Photos- Lionhead Range

Displaying 1 - 40 of 4.61168601843E+18
  • POWDER BLAST
    26 October 2018

    BUY TICKETS HERE

    Join us for the best fundraiser of the year! All proceeds benefit the Friends of the Avalanche Center which supports avalanche awareness, education and information throughout southwest Montana.

    Your $35 donation gets you an unforgettable evening at the Emerson Cultural Center.

    Grizzly Outfitters of Big Sky is title sponsor of this year's 20th Annual Powder Blast. Mystery Ranch, World Boards, Community Food Co-op, Highline Partners and Spark R&D are key sponsors along with Alpine Orthopedics, Stronghold Fabrication, Werner Wealth Management, Scott Lawson Dentistry, and Knoff Group Real Estate. Additional support comes from Javaman, Edward Jones, Massive Design, Bountiful Table and Katabatic Brewing. 

    Beer from Katabatic Brewery and Wine from Montana Ale Works

    Dinner by Bountiful Table

    Music by Laney Lou and the Bird Dogs and the best silent auction of outdoor gear in the valley!

  • Wet slab avalanche in the Centennial range. Multiple days without freezing created widespread wet slides last week (5/6-5/11). Photo: @waxeman

  • Wet slab avalanche in the Centennial range. Multiple days without freezing created widespread wet slides last week (5/6-5/11). Photo: @waxeman

  • Wet slab avalanche in the Centennial range. Multiple days without freezing created widespread wet slides last week (5/6-5/11). Photo: @waxeman

  • Wet slab avalanche in the Centennial range. Multiple days without freezing created widespread wet slides last week (5/6-5/11). Photo: @waxeman

  • Wet slide carnage observed off of Skyline Ridge near Cabin Creek May 11/12. Many days of above freezing temperatures created widespread wet slide activity over the previous week. Photo: B. Lukens

  • Wet slide carnage observed off of Skyline Ridge near Cabin Creek May 11/12. Many days of above freezing temperatures created widespread wet slide activity over the previous week. Photo: B. Lukens

  • Massive cornices create a few hazards as they warm and weaken under the spring heat. They become easier to trigger, can break naturally, and form dangerous, deep cracks along ridgelines. From e-mail: "The crack was up to 30' deep, and had pulled large pieces of vegetation from the ridgeline it used to be attached to." Photo: S. Reinsel

  • From e-mail: "Photo of a couple of recent wet slab avalanches, just north of Silver Gate (on Mineral Mtn.). On a south aspect, around 9100'. The one on looker's left ran on April 23rd I think, and the one on looker's right April 27 or 28th. That's all the slab avalanches I've observed with these warm temps. Not a ton of wet loose activity to be seen either. Snowpack is holding in there!" Photo: B. Fredlund

  • Natural wet loose avalanches that slid during multiple days of well above freezing temperatures. Wet loose slides like this can run long distances and carry a lot of force. Multiple days with high temperatures of 50-60 F and overnight lows in the mid-30s to 40 F created a wet snowpack and wet slab and wet loose avalanches slid naturally. Photo: GNFAC

  • This small wet slab avalanches slid during multiple days of well above freezing temperatures. Though small, it is large enough to bury a person and would carry a lot of force. Multiple days with high temperatures of 50-60 F and overnight lows in the mid-30s to 40 F created a wet snowpack, and wet slab and wet loose avalanches slid naturally. Photo: GNFAC

  • Natural wet slab avalanche that ran during multiple days of well above freezing temperatures (4/26-4/28). Multiple days with high temperatures of 50-60 F and overnight lows in the mid-30s to 40 F created a wet snowpack and wet slab and wet loose avalanches slid naturally. Photo: GNFAC

  • Wet avalanches ran naturally last week during above freezing temperatures and sunshine after the last storm. Slides like this will be possible when the snowpack softens in the afternoon and will become more likely if the snowpack doesn't freeze overnight. Wet slides can run long distance and carry a lot of force. Photo: B. VandenBos

  • Recent snowfall followed by spring sunshine and above freezing temperatures created natural wet slab and wet loose activity. More slides like this are possible if temperatures do not freeze overnight, during heavy rain, or after the next snowfall. Photo: B. VandenBos

     

  • Cornices are massive and will break naturally with above freezing temperatures and hot, spring sun. Photo: B. VandenBos

  • Cornices are massive through the advisory area and will break naturally with above freezing temperatures and hot, spring sun. Photo: B. VandenBos

  • Cornices are a significant hazard this time of year. As temps warm above freezing, these overhanging masses of snow will become increasingly unstable. They can break farther back than you might expect and trigger large avalanches on the slopes below. They can fail naturally or with human triggers. 

  • This slide was triggered by the first skier of day off Saddle Peak. The skier was caught and carried 1,500 vertical feet. He was buried with his hand sticking out of snow. Unfortunately, he did not have a partner and was buried for over an hour. He did not survive. Photo: R. Gregoire   

  • This slide on Saddle Peak resulted in a fatality. It was triggered by a solo skier who was caught and buried. The slope was heavily wind loaded and the slide failed on a thin ice crust. Photo: R. Gregoire

  • Wet loose avalanches will be a growing concern as spring progresses. Sunshine, above freezing temps and rain can all produce dangerous wet snow avalanches. Watch for signs of instability such as roller balls, small point releases and wet snow above your boot top. Avoid being on or underneath steep slopes if signs on instability are observed. Photo: BBSP 

  • The crown ranged from 1-3' deep and was 75-100' wide. The avalanche was new, windblown snow on top of a thin ice crust. Aspect is east, slope angle is 37 degrees, and elevation is 9019'. Photo: GNFAC

  • Looking down the path with the burial location marked. Photo GNFAC

  • Looking down the path from the crown. The "X" marks the burial location. Photo: GNFAC

  • Looking uphill about half-way down the path. The crown can be seen at the skyline. Photo: GNFAC

  • The distance from the burial location to the crown line (seen at the top of path at the skyline) was 1500' vertical. The skier was buried with his hand sticking out of the snow. His head was about 1.5' from the surface.  Three rescuers got to him 75 minutes after he was caught. Photo: GNFAC

  • Large cornices loom over the slope where a skier triggered a fatal slide on Saturday (4/14) on Saddle Peak in the Bridger Range. Photo: P. Maleski

  • Both the crown and the victim's location are marked on the photo. The skier was carried 1500 vertical feet downslope and buried near the toe of the debris. Rescuers reached him 75 minutes after the slide occurred, but the avalanche was fatal. Photo: GNFAC

  • The avalanche was triggered by a solo skier, the first tracks of the day. The crown is marked, and the slide carried him down the path where he was fatally buried. Photo: GNFAC

  • A skier triggered the slide a few hundred feet from the top on a 37 degree rollover that was wind-loaded with the previous days 30" of new snow. The crown was 1-3 feet deep and 75-100 feet wide. Photo: GNFAC

  • The Bridger Bowl weather station is buried by the new snow. Photo: BBSP

  • May 3-4th, Give Big online fundraising campaign! This is our one-and-only financial appeal to our users. Check out our site at: https://www.givebiggv.org/organizations/friends-of-the-gallatin-national-forest-avalanche-center

     

  • Snow water equivalent of the snowpack at primary SNOTEL sites within the GNFAC advisroy area from October 1, 2017 through April 8, 2018.

  • These cornices at the head of Sunlight Basin in Taylor Fork are bigger than big. The snow lip is a solid 30 feet away from the true ridge crest and could easily fool a rider or skier into getting too close to the edge. We are finding similar cornices in all our ranges. As the temperatures warm these overhangs will start to lose strength. Photo: GNFAC

  • A skier observed this wet avalanche on a NE aspect near Hebgen Lake. It was estimated to have run about 1000'.  Warmer temperatures will be on the horizon, straining already massive cornices, and spring snowfall will continue to build these cornices and sculpt wind slabs near ridge tops. Photo: R. Teat

  • Debris from a cornice fall that pulled out a small wind slab on Mt. Bole in Hyalite (3/27). Photo: GNFAC

  • South of Cooke City, a recent slab avalanche up Republic Creek from Monday (3/26).  A wind loaded, north facing slope around 9,700'. Photo: B. Fredlund

  • A cornice fall triggered this avalanche on Lionhead Ridge that broke sometime late Saturday (3/24). Photo: B. Rasmussen

  • Reactive snow on steep edge of tree well. Sluffing or cracking on small rolls and micro-terrain features is a sign that loose slides or soft slabs are possible and may run far on larger, steep terrain. Photo: H. Coppolillo

Videos- Lionhead Range

Weather Forecast Lionhead Range

Extended Forecast for

10 Miles WNW West Yellowstone MT

  • Today

    Today: Sunny, with a high near 52. Light and variable wind becoming south southwest 5 to 7 mph in the afternoon.

    Sunny

    High: 52 °F

  • Tonight

    Tonight: Clear, with a low around 31. South wind 6 to 11 mph.

    Clear

    Low: 31 °F

  • Sunday

    Sunday: Sunny, with a high near 51. Southwest wind 7 to 9 mph, with gusts as high as 18 mph.

    Sunny

    High: 51 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 30. South southwest wind 6 to 13 mph becoming east northeast after midnight.

    Mostly Clear

    Low: 30 °F

  • Monday

    Monday: Sunny, with a high near 49. Northeast wind 6 to 8 mph becoming southeast in the afternoon.

    Sunny

    High: 49 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 32.

    Partly Cloudy

    Low: 32 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 47.

    Mostly Sunny

    High: 47 °F

  • Tuesday
    Night

    Tuesday Night: Mostly cloudy, with a low around 33.

    Mostly Cloudy

    Low: 33 °F

  • Wednesday

    Wednesday: A slight chance of snow before noon, then a slight chance of rain and snow between noon and 1pm, then a slight chance of rain after 1pm.  Partly sunny, with a high near 44.

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

    High: 44 °F

The Last Word

To prepare yourself for a safe winter in the backcountry you can read this accident report from October 2012 in the northern Bridger Range, and plan to attend one of our avalanche education courses listed HERE.


  <<  This is the most recent advisory.