Summary
Confidence
Moderate - no alpine snow pack observations and most obersvations limited to Eastern Central Vancouver Island.
Travel/Terrain Advice
Very high temperatures and freezing levels and no overnight freezing of upper snow pack will result in very moist to wet snow that provides little support to travelers. Be aware that even small loose wet avalanches can push one into or over terrain traps such as depressions, cliffs, and trees. There is potential for large to very large avalanches starting in treeline and alpine terrain to impact below treeline elevations. Use caution when crossing large avalanche paths in all elevations. Watch for early season hazards such as exposed creeks, stumps, and tree wells especially below treeline.
Past Weather
Vancouver Island has seen little to no precipitation, light to moderate SW through SE winds and temperatures ranging from -7oC to +6oC. Freezing levels across the forecast region have ranged from sea level to 2300 m.
Avalanche Summary
Loose wet avalanches at treeline and below treeline on exposed solar aspects with pinwheeling and tree bombs.
Snowpack Description
Surface - Thin unsupportive melt freeze crust on solar aspects at all elevation, in some shaded areas snow remains cold Upper - Wind loaded pockets bonding moderately to an upper crust on NW-NE aspects at treeline and alpine. Scoured and pressed surface on windward slopes exposing the crust Mid - Well settled crust complex Lower - Well settled
Weather Forecast
Temperatures and freezing levels will remain high with potential freezing levels of up to 3600 m with the persistent high pressure system. Expect a temperature inversion for the duration of the forecast period with low level clouds and morning fog near the ocean. Wed - No new snow. Winds light SE Freezing level to 2800-3600 m Thur - No new snow. Winds light to moderate SE Freezing level to 2500-3600 m Fri - No new snow. Winds light to moderate SE Freezing level to 1200-3600 m
Problems
Loose Wet
Aspects: North, North East, East.
Elevations: All elevations.
Likelihood
Expected Size
Wet Slabs
Aspects: North, North East, East, South East, South, South West, West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 8th, 2017 6:00PM