Avalanche Forecast
Issued: Feb 20th, 2023 4:00PM
The alpine rating is Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeUpdated on Tuesday at 6:30 AM. Watch for heightened avalanche conditions at upper elevations where unstable slabs may be found on wind-loaded slopes.
Summary
Confidence
Moderate
Avalanche Summary
On Saturday, a few size1 windslabs avalanches were triggered during travel on skis. These windslabs were located on north aspect terrain near 1600 m elevation.
Snowpack Summary
New snow from the past several days has accumulated over a variety of old surfaces including wind slabs in the alpine and a breakable freezing rain crust between 1100 m and 1600 m.
The mid and lower snowpack is well-settled, strong, and consolidated.
Snowpack depths are reaching 250 cm at treeline.
Weather Summary
Monday Night
Cloudy with light snowfall, accumulation 5-20cm. Higher amounts possible on the eastern end of the region. Wind moderate to strong northwest. Treeline temperature 0 °C. Freezing level 1400 m.
Tuesday
Clearing with isolated flurries, accumulation 1-3cm. Wind light to moderate north. Treeline temperature -5 °C. Freezing level 400 m.
Wednesday
Mainly cloudy. Wind moderate northeast. Treeline temperature -12 °C.
Thursday
Mix of sun and cloud. Wind moderate northeast wind. Treeline temperature -11 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Carefully evaluate steep lines for wind slabs.
- Wind slabs are most reactive during their formation.
Problems
Wind Slabs
Recent snowfall combined with wind switching direction is promoting the formation of new wind slabs on a variety of aspects.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Feb 21st, 2023 4:00PM