Regional Conditions for Lionhead Range

as of 5:00 am
Today1″ | 10-30 SW
Jan 26 0″ | 10-15 N
Jan 25 1″ | NA
8775′     1/25 at 4:00
4 ℉
N - 0 mph
Gusts 0 mph
7750′   01/27 at 8:00
17℉
Depth
Bottom Line: The snowpack from Lionhead through the Bridger Range is shallow with a distinct layer of weak, depth hoar near the ground and a stripe of feathery surface hoar buried under 6-18" of snow. It will take weeks or months to trust these layers fully, but they are adjusting to the current load and avalanches are less likely. Stability is currently similar in these ranges but today's snowfall will heavily favor the mountains around West Yellowstone. As the snow begins to add up, stability will decrease.
Primary Problem: Persistent Weak Layer

Past 5 Days

Sat Jan 23

Moderate
Sun Jan 24

Moderate
Mon Jan 25

Moderate
Tue Jan 26

Moderate
Today

Moderate

Avalanche Activity- Lionhead Range

Lionhead Range
LIONHEAD AREA
Natural avalanches near Lionhead Ridge
Incident details include images
LIONHEAD AREA
SS-N-R2-D2-O
Elevation: 9,000
Aspect: SE
Coordinates: 44.7292, -111.3230
Caught: 0 ; Buried: 0

On 1/23/21 we saw a couple recent natural avalanche crown on Bald Peak near Lionhead Ridge. Estimated 2-3 days old.


More Avalanche Details
Lionhead Range
Lionhead Ridge
Lionhead Ridge natural avalanche
Incident details include images
Lionhead Ridge
SS-N-R2-D1.5-O
Aspect: E
Coordinates: 44.7145, -111.3180
Caught: 0 ; Buried: 0

This natural avalanche likely releaed fron the new snow (about .5" SWE) and strong winds during the day.


More Avalanche Details
Lionhead Range
Lionhead Ridge
Many snowmobile triggered slides at Lionhead
Incident details include images
Incident details contain video
Lionhead Ridge
SS-AMu-R2-D2-O
Elevation: 9,000
Coordinates: 44.7145, -111.3180
Caught: 0 ; Buried: 0

Many snowmobile triggered avalanches were observed after new snow overloaded a very weak snowpack.


More Avalanche Details

Photos- Lionhead Range

Displaying 1 - 22
  • We saw this natural avalanche on 1/23/21. It likely occurred in the past week. SE aspect at 9,200', Photo: GNFAC

  • This avalanche is on the east side of Lionhead Ridge. Trigger is unknown; elevation is 9,000'. Photo: GNFAC

  • This avalanche was likely triggered by a snowmobiler on 1/9/21. It is on Ski Hill and the slope avalanched in between the two avalanches that Dave and Doug triggered earlier. It failed on depth hoar; east facing, 8,000'. Photo: GNFAC

  • This small avalanche was likely triggered by a passing snowmobiler on 1/9/21. This is located south of Airplane Bowl, NE aspect at 9000'. Photo: GNFAC

  • This avalanche likely released with the snowfall and wind on Wednesday (1/13). It is east facing and the lowest half of the snowpack is facets. Photo: D. Haluptzok

  • A snowmobiler triggered slide on the east side of Lionhead Ridge to the north of Airplane Bowl. Photo: Photo: D. Haluptzok

  • A snowmobiler triggered slide on the east side of Lionhead Ridge adjacent to a slope called Dead Tree Hill. Photo: D. Haluptzok

  • We remotely triggered (from 30' away) this avalanche at Ski Hill in the Lionhead area. These are red-flags! Stay off of and out from under steep slopes until the avalanche conditions improve. Photo: GNFAC

  • We triggered this avalanche from 50 feet away. We were walking on a low-angle slope, collapsed the slope, and where the pitch got steeper, we had an avalanche. This is an obvious sign of dangerous instability. If you are on steep slopes it is LIKELY that you will trigger an avalanche. Today, we triggered two avalanches. Photo: GNFAC

  • A skier kicked off a larger than expected cornice as they skinned up the ridge on the W side of Beehive basin on Sunday (12/20/20).

  • Doug intentionally triggered this wind-loaded sidehill. Weak, faceted snow broke under a 1' deep soft slab of windblown snow. Small avalanches like this are indicators of instability on bigger slopes. These conditions can be found throughout the southern Gallatin, southern Madison, Lionhead and Centennial Ranges. Photo: GNFAC

  • We put up the Taylor Fork Weather station today. It measures wind direction and speed, RH, and temperature. Coupled with the Carrot Basin SNOTEL, this gives us a good idea on what is occurring in this range. Photo GNFAC

  • Light wind created soft drifts of new, low density snow near the ridgeline in the Bridger Range. This wind slab easily cracked when touched with skis, 20 feet along the ridge and 5-10 feet down, but didn't slide. This is a sign drifts will be unstable as they grow with more snow and wind. Photo: GNFAC

  • From IG post: "Weak and thin snowpack. A little sluff was all it took to entrain the whole season’s snowpack. S. Madison ~9000’ east facing" Photo: @vt.to.mt

  • From IG post: "Weak and thin snowpack. A little sluff was all it took to entrain the whole season’s snowpack. S. Madison ~9000’ east facing" Photo: @vt.to.mt

  • We found a thick layer of surface hoar (1-2cm) on top of the snowpack at Lionhead Ridge on 11/24/20. Below that layer the snowpack was faceted and weak. This will be an unstable foundation for future storms. Photo: GNFAC

  • Watch the video HERE!

  • The BBWC (Bridger Bowl Wind Cloud) on Tuesday 10/27 accompanied 50-60 mph gusts. This strong wind drifted recent snow into slabs that could avalanche on steep slopes. Early season snow means we need to be thinking about and managing avalanche hazard when we travel in the mountains. Photo: GNFAC

  • Backcountry.com did a social media survey and found that many of us could use an avalanche class. Don't hesitate to sign up for one. Even a one-hour avalanche awareness class is a great place to start. Check out our Education Calendar for an expanding list of classes being offered in southwest Montana. Many are free.

  • Wind was blowing and drifting recent snow in the Bridger Range the morning of October 15th. Photo: B. VandenBos

  • Snow on Lone Mtn. on the morning of October 14th. Photo: B. VandenBos

  • By morning of October 11 most mountain ranges were white at the higher elevations. This picture of Saddle Peak was taken from Stone Creek up Bridger Canyon. About .6-.8" of precipitation fell throughout southwest Montana. The Fisher Creek Snotel outside of Cooke City shows 6" of snow fell at 9,100 feet. Only time will tell what melts and what sticks around, but it sure is a good sign! Photo: GNFAC

WebCams

Weather Forecast Lionhead Range

Extended Forecast for

10 Miles WNW West Yellowstone MT

Winter Weather Advisory until January 28, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until January 28, 05:00pm

    NOW until
    5:00pm Thu

    Winter Weather Advisory

  • Today

    Today: Snow.  Areas of blowing snow. High near 16. Wind chill values as low as -15. Breezy, with a south southwest wind 22 to 25 mph, with gusts as high as 34 mph.  Chance of precipitation is 90%. Total daytime snow accumulation of 1 to 3 inches possible.

    Snow and
    Areas Blowing
    Snow

    High: 16 °F

  • Tonight

    Tonight: Snow.  Patchy blowing snow. Low around 16. Wind chill values as low as zero. South wind 17 to 20 mph, with gusts as high as 24 mph.  Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

    Snow and
    Patchy
    Blowing Snow

    Low: 16 °F

  • Thursday

    Thursday: Snow.  Patchy blowing snow. High near 24. South wind 18 to 20 mph, with gusts as high as 31 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Snow and
    Patchy
    Blowing Snow

    High: 24 °F

  • Thursday
    Night

    Thursday Night: Snow likely.  Patchy blowing snow before 8pm, then patchy blowing snow after 2am. Mostly cloudy, with a low around 23. South southwest wind 16 to 20 mph, with gusts as high as 29 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    Snow Likely
    and Patchy
    Blowing Snow

    Low: 23 °F

  • Friday

    Friday: Snow.  Patchy blowing snow before 8am. High near 25. South wind 14 to 17 mph, with gusts as high as 24 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Snow and
    Patchy
    Blowing Snow

    High: 25 °F

  • Friday
    Night

    Friday Night: Snow likely, mainly before 11pm.  Mostly cloudy, with a low around 18. Southwest wind 11 to 14 mph, with gusts as high as 21 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Snow Likely

    Low: 18 °F

  • Saturday

    Saturday: A 50 percent chance of snow.  Mostly cloudy, with a high near 19. South southwest wind 13 to 15 mph, with gusts as high as 24 mph.  New snow accumulation of less than a half inch possible.

    Chance Snow

    High: 19 °F

  • Saturday
    Night

    Saturday Night: A slight chance of snow before 11pm.  Mostly cloudy, with a low around 15. South southwest wind around 14 mph, with gusts as high as 22 mph.

    Slight Chance
    Snow then
    Mostly Cloudy

    Low: 15 °F

The Last Word


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