Avalanche Forecast
Issued: Dec 17th, 2012 9:25AM
The alpine rating is Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Timing, track, or intensity of incoming weather is uncertain on Wednesday
Weather Forecast
Overnight and Tuesday: Strong Westerly winds are expected Monday night as the Low pressure near the U.S. border moves to the East of the Rockies. Flurries are forecast to continue overnight with little accumulation ( 2-3 mm). During the day on Tuesday the wind should lower to about 30 km/hr from the Northwest under overcast skies with sporadic flurries. Temperatures will remain cold, minus 15.0 in the alpine.Wednesday: The weak ridge is expected to break down in the afternoon when the Southwest winds increase to strong and the next Pacific system starts to move in from the coast.Thursday: Strong Southwest winds and moderate to heavy precipitation are forecast during the next storm. Timing is uncertain.
Avalanche Summary
Ski cutting produced soft slab avalanches up to size 1.0 in the North of the Region.
Snowpack Summary
The recent storm deposited 10-15 cms in the North of the region near Golden, and 20-25 cms further South near the Purcell Wilderness Conservancy. Some areas reported a new layer of surface hoar that developed just before the storm in the North of the region, and are now buried down 5-15 cms. Thin new windslabs continue to grow as strong Southeast winds transport snow at alpine elevations in the North. Strong Southwest winds are transporting snow into wind slabs in the South of the region.
Problems
Wind Slabs
Aspects: North, North East, East, South East, South, South West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 18th, 2012 2:00PM