Trip Planning for Lionhead Range

as of 5:00 am
Today0″ | 11-18 W
Apr 1 6″ | 15-40 W
Mar 31 0″ | 15-27 SW
9420′     04/02 at 19:00
17.6℉
W - 3mph
Gusts 14 mph
7750′     04/02 at 19:00
27℉
73″ Depth
Primary Problem: Wind Slab
Bottom Line: There are three avalanche problems to consider today: wind slabs, storm slabs, and dry loose avalanches. Avoid places at the tops or sides of slopes where winds have drifted some snow making the powder more cohesive and more likely to avalanche. Watch for any signs like shooting cracks that the new snow is unstable and consider doing some quick tests like Dave shows in this video. Jump on small test slopes or walk/ride above other tracks to get a feel for how the new is bonded. If getting into steeper terrain where getting pushed downhill could be a problem, consider how to manage sluffing.

Past 5 Days

Sat Mar 29

Low
Sun Mar 30

Low
Mon Mar 31

Low
Tue Apr 1

Moderate
Today

Moderate

Relevant Avalanche Activity

Lionhead Range
LIONHEAD AREA
Many Wind Slab Avalanches at Lionhead
Incident details include images
Incident details contain video
LIONHEAD AREA
N-R2-D2-I
Elevation: 9,400
Aspect: E
Coordinates: 44.7292, -111.3230
Caught: 0 ; Buried: 0

We saw many R1-R2 wind slab avalanches below the Lionhead Ridge cornice line. Visibility was limited so I won't estimate the exact number, but nearly every time we had good views of the steep faces, we saw cornice collapses, debris, or small crown lines. There were two slides on east aspects that ran closer to full path and piled debris more deeply. I expect that most of these had run within the last 24 hours, but continuing snowfall and hurricane force winds made precisely dating these a challenge (many trees were blown down during the wind event, these too were already somewhat buried). None of the avalanches broke on persistent weak layers as far as I could tell. 


More Avalanche Details

Relevant Photos

Displaying 1 - 40

Videos- Lionhead Range

WebCams


Rendezvous Ski Trail, W. Yellowstone

Snowpit Profiles- Lionhead Range

 

Select a snowpit on the map to view the profile image

Weather Forecast Lionhead Range

Extended Forecast for

10 Miles WNW West Yellowstone MT

  • Tonight

    Tonight: A 50 percent chance of snow, mainly before midnight.  Patchy fog after 3am.  Otherwise, mostly cloudy, with a low around 14. West southwest wind 6 to 8 mph.  Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 14 °F

    Chance Snow
    then Slight
    Chance Snow
    and Patchy
    Fog

  • Thursday

    Thursday: A slight chance of snow before 10am, then snow likely after 11am.  Patchy fog before 9am.  Otherwise, mostly cloudy, with a high near 28. West wind 6 to 11 mph becoming south southeast in the morning.  Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    High: 28 °F

    Slight Chance
    Snow and
    Patchy Fog
    then Snow
    Likely

  • Thursday Night

    Thursday Night: Snow likely, mainly before midnight.  Mostly cloudy, with a low around 16. West wind 11 to 14 mph becoming north after midnight. Winds could gust as high as 18 mph.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 16 °F

    Snow Likely
    then Chance
    Snow

  • Friday

    Friday: A 20 percent chance of snow before noon.  Mostly sunny, with a high near 26. North wind 13 to 15 mph, with gusts as high as 22 mph.

    High: 26 °F

    Slight Chance
    Snow then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 8. North wind 10 to 17 mph, with gusts as high as 24 mph.

    Low: 8 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 35. North wind 7 to 9 mph becoming west in the afternoon.

    High: 35 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 19. West wind 7 to 11 mph.

    Low: 19 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 40. South wind 6 to 9 mph.

    High: 40 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

The Last Word

Hyalite Road Closure 

The Hyalite Canyon Road is closed to ALL MOTORIZED VEHICLES until the morning of May 16. This is a regular annual road closure to reduce road damage during the spring thaw. Bicycle and foot traffic are allowed. Contact the Bozeman FS Ranger District for more info.

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