Avalanche Forecast
Issued: Nov 24th, 2011 8:55AM
The alpine rating is Wind Slabs and Storm Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Poor - Due to limited field observationsfor the entire period
Weather Forecast
Friday: Light to moderate precipitation increasing intensity throughout the day with 10-20cm expected by the evening. Strong westerly winds becoming extreme southerlies, and freezing levels around 600m. Saturday: Heavy precipitation, extreme southwesterly winds and freezing levels as high as 1000m. Total accumulation expected to be in the 50-75cm range by Sunday morning. Sunday: Freezing levels drop, winds calm down and shift to westerly, and precipitation eases off throughout the day as the storm blows over.
Avalanche Summary
Recent observations are limited, but I suspect natural avalanche activity occurred and will continue in response to heavy loading from snow and especially wind.
Snowpack Summary
Most areas received over a metre of new snow since the weekend, and it's still snowing. Fluctuating freezing levels and varying precipitation intensity and wind throughout the recent storms has probably resulted in various weaknesses within upper snowpack. Widespread large surface hoar was also observed on the previous snow surface at all elevations. The mid and lower snowpack is generally well settled and strong with an old rain crust near the ground.
Problems
Wind Slabs
Aspects: North, North East, East, South East, South.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Storm Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Nov 25th, 2011 8:00AM