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Archived

Avalanche Forecast

Dec 10th, 2024–Dec 11th, 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
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

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

Watch for changing conditions as you gain elevation. Fresh wind slabs may form in terrain exposed to stronger winds

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 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

Tuesday Night

Partly cloudy. 20 to 30 km/h west ridgetop wind. Treeline temperature -9 °C.

Wednesday

Mostly cloudy. 20 to 30 km/h west ridgetop wind. Treeline temperature -6 °C.

Thursday

Mostly clear skies with increasing afternoon cloud. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Friday

A mix of sun and cloud 20 to 30 km/h southwest ridgetop wind. Possible flurries. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Closely monitor how the new snow is bonding to the old surface.

Avalanche Problems

Wind Slabs

Watch for active wind transport - wind slabs are most reactive during their formation. Slabs may slide easily on the layers below.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2