Regional Conditions for Lionhead Range

as of 5:00 am
Today2″ | NA
Jan 15 0″ | 5-15 S
Jan 14 4″ | 10-25 NW
8775′     1/15 at 3:00
10 ℉
S - 4 mph
Gusts 11 mph
7750′   01/16 at 10:00
20℉
Depth
Bottom Line: Our main concern is a layer of sugary facets buried 2-3’ deep. Now in addition, the recent snowfall buried a weak layer of surface hoar 6-12” deep that may avalanche. It is worth digging to see if these layers exist prior to traveling on steep slopes, and to track their location as they could avalanche with the next round of snow. Careful snowpack evaluation and cautious route finding are essential.
Primary Problem: Persistent Weak Layer

Past 5 Days

Tue Jan 12

Moderate
Wed Jan 13

Considerable
Thu Jan 14

Considerable
Fri Jan 15

Moderate
Today

Moderate

Avalanche Activity- Lionhead Range

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
Lionhead Range
Hebgen Lake
Cracking and Collapsing at Hebgen Lake
Hebgen Lake
Coordinates: 44.8381, -111.3430
Caught: 0 ; Buried: 0

From obs: "Skied Lionhead above Hebgen Lake today. Had cracking and collapsing almost constantly on the ascent and along the ridge line. Stuck to low angle terrain and did not trigger anything that moved. No natural avalanche activity."


More Avalanche Details

Photos- Lionhead Range

Displaying 1 - 21
  • 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

  • Today

    Today: Mostly sunny, with a high near 19. Wind chill values as low as zero. West southwest wind around 14 mph, with gusts as high as 21 mph.

    Mostly Sunny

    High: 19 °F

  • Tonight

    Tonight: A 50 percent chance of snow after 3am.  Mostly cloudy, with a low around 10. Wind chill values as low as -5. West southwest wind 11 to 13 mph.  New snow accumulation of less than a half inch possible.

    Mostly Cloudy
    then Chance
    Snow

    Low: 10 °F

  • Sunday

    Sunday: Snow.  High near 21. Wind chill values as low as zero. Southwest wind 13 to 16 mph, with gusts as high as 23 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Snow

    High: 21 °F

  • Sunday
    Night

    Sunday Night: Snow, mainly before 11pm.  Patchy blowing snow before 11pm. Low around 12. Wind chill values as low as zero. West wind 14 to 18 mph, with gusts as high as 25 mph.  Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Snow and
    Patchy
    Blowing Snow
    then Chance
    Snow

    Low: 12 °F

  • M.L.King
    Day

    M.L.King Day: A 50 percent chance of snow.  Partly sunny, with a high near 18. North northwest wind 13 to 15 mph, with gusts as high as 21 mph.  New snow accumulation of less than a half inch possible.

    Chance Snow

    High: 18 °F

  • Monday
    Night

    Monday Night: A 20 percent chance of snow before 11pm.  Partly cloudy, with a low around 4. North wind 13 to 15 mph, with gusts as high as 21 mph.

    Slight Chance
    Snow then
    Mostly Clear

    Low: 4 °F

  • Tuesday

    Tuesday: Sunny, with a high near 17. North wind 10 to 13 mph becoming west southwest in the afternoon.

    Sunny

    High: 17 °F

  • Tuesday
    Night

    Tuesday Night: A chance of snow after 11pm.  Partly cloudy, with a low around 7. Southwest wind around 14 mph, with gusts as high as 20 mph.

    Chance Snow

    Low: 7 °F

  • Wednesday

    Wednesday: A chance of snow.  Partly sunny, with a high near 15.

    Chance Snow

    High: 15 °F

The Last Word

Ski-Doo is offering free avalanche education classes online that you can take here: https://www.ski-doo.com/avalanche.html