Avalanche Forecast
Issued: Nov 10th, 2017 8:06AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Loose Dry.
mark herbison,
Parks Canada
Early season hazards are lurking below the fresh dusting of snow, ski defensively and cautiously once below treeline.Watch for sluff accumulation in steep terrain.
Summary
Weather Forecast
Snow amounts will tapper off today as the active low moves southward into Washington. Light flurries today with 1cm of accumulation, temps ranging from -1 to -8 and light winds from the southwest. Freezing levels up to 1400m. Small amounts of snow over the weekend (5cm) with Monday bringing the next delivering of snow (up to 30cm in the forecast).
Snowpack Summary
Up to 10cm of new snow in past 24hrs, with 25-40cm of snow overlying the Halloween crust at TreeLine. This crust sits on 50-70cm of rounds/mixed forms which cover the earlier October crusts. Snowpack is 80-110cm above 1900m. Variable windslab in the Alpine from strong northerly winds last week now covered by recent snowfall.
Avalanche Summary
Several days ago two natural wind slab avalanches were observed in the HWY corridor off Mt Macdonald on steep terrain to size 1.5. No other natural or rider triggered avalanches have been reported recently.
Confidence
Due to the number of field observations
Problems
Loose Dry
Up to 10cm of new snow on Nov 9 fell onto surface hoar, reported up to 20mm at TL. Not expecting this to be an issue until it sees more load but felt it is worth noting, manage your sluff in steep terrain.
Be cautious of sluffing in steep terrain.Sluffs will be easy to trigger in steep terrain that is sheltered from the wind
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 11th, 2017 8:00AM
