Avalanche Forecast
Regions: Sea To Sky.
Confidence
Moderate - Forecast snowfall amounts are uncertain on Saturday
Weather Forecast
SATURDAY: Flurries, accumulation 5-10cm / Moderate southwest wind / Alpine temperature -5 / Freezing level 1400mSUNDAY: Mix of sun and cloud / Light to moderate south wind / Alpine temperature -6 / Freezing level 1300mMONDAY: Flurries / Light southwest wind / Alpine temperature -6 / Freezing level 1300m
Avalanche Summary
Reports from Wednesday and Thursday include explosives triggered storm slabs running size 1.5 - 2, 25-30cm deep. On Monday a few natural cornice releases to size 2.5 were observed running to the bottom of their run outs entraining loose snow only. On Saturday, expect newly formed wind slabs to be reactive to human triggering.
Snowpack Summary
30-50cm of new snow at upper elevations sits on widespread melt-freeze crusts that exist on all aspects and elevations except for high elevation north facing terrain. On all aspects below 2000 m and higher on sun exposed slopes, there may be multiple crust layers in the upper snowpack. Moderate to strong alpine wind from the south will have redistributed the new snow and formed additional wind slabs in the alpine and at tree line. Large overhanging cornices exist primarily on north aspects in the alpine.
Avalanche Problems
Storm Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood: Possible
Expected Size: 1 - 2
Cornices
Aspects: North, North East, East, South East, South.
Elevations: Alpine.
Likelihood: Possible
Expected Size: 2 - 3