Avalanche Forecast
Issued: Nov 12th, 2017 8:00AM
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 snow surface, ski / ride cautiously and defensively.Manage your sluff in steep terrain.
Summary
Weather Forecast
Light flurries today with sunny periods, an alpine high of -5 and a freezing level that could reach up to 1800m. 20km/hr south winds today and increasing to 35km/hr this evening. We're expecting snow to start falling tonight and continue into Monday evening with accumulation up to 25cm. Another 10cm forecasted on Tuesday and 20cm on Wednesday.
Snowpack Summary
5cm of snow overnight, with 25-40cm overlying the Halloween crust at treeline. The crust sits on 50-70cm of rounds/mixed forms and, for the time being, is well bonded. The lower snowpack is a 20cm layer of melt frozen crust. Snowpack is 80-130cm above 1900m.
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 quality of field observations on Saturday
Problems
Loose Dry
10-15cm of snow on the Nov 9 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 13th, 2017 8:00AM
