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Archived

Avalanche Forecast

Dec 11th, 2024–Dec 12th, 2024
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Flathead, Lizard, Lizard-Flathead, Moyie, St. Mary.

Watch for changing conditions as you gain elevation.

The best riding conditions will be found in wind sheltered terrain.

Confidence

Moderate

Avalanche Summary

Avalanche activity has tapered off quickly since the storm. Explosive control on Monday and Tuesday produced size 1.5 wind slab avalanches. These slabs may still be triggerable by riders.

Snowpack Summary

Around 30 cm of wind affected snow sits over a mix of crusts, surface hoar in wind-sheltered terrain, and hard wind-affected surfaces. Reports suggest the recent snow is bonding well with the layers below. Low elevations received mostly rain while higher elevations received wet snow or mixed precipitation.

There have been a lot of great MIN reports in the last week from throughout the Lizard Flathead area.

The middle of the snowpack is generally expected to be well-settled and stable. Total snow depths vary from 100 to 150 cm at treeline.

Weather Summary

Wednesday Night

Sky clearing overnight with no snow expected. 5 to 10 km/h southwest ridgetop wind. Treeline temperature -8°C.       

Thursday

Mostly sunny with no snow expected. 5 to 15 km/h southwest ridgetop wind. Treeline temperature -11°C.

Friday

Mostly cloudy with trace amounts of snow possible. 15 to 30 km/h southwest ridgetop wind. Treeline temperature -8°C.

Saturday

Cloudy with up to 15 cm of snow expected. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -3°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Closely monitor how the new snow is bonding to the old surface.
  • Be careful as you transition into wind-affected terrain.

Avalanche Problems

Wind Slabs

Small wind slabs near ridge crests may still be sensitive to rider traffic.

Aspects: North, North East, East, South East, South.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 1.5