Avalanche Forecast
Issued: Dec 5th, 2017 4:31PM
The alpine rating is Storm Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Moderate - Freezing levels are uncertain on Wednesday
Weather Forecast
WEDNESDAY: Sunny with valley cloud in the morning, light northwest wind, inversion forming with alpine temperatures reaching -2 C.THURSDAY: Sunny with valley cloud, light wind, inversion with freezing level up to 3000 m.FRIDAY: Sunny with valley cloud, light wind, inversion with freezing level up to 2700 m.
Avalanche Summary
On Tuesday, explosive avalanche control in the Monashees produced a few size 1.5 slabs running on the November crust on northwest-facing slopes at treeline. A large size 3 natural avalanche was reported on a steep north-facing alpine face in the Selkirks. The failure layer is unknown, but it was likely an early season crust. Some sluffing from steep sun-exposed slopes was also reported.
Snowpack Summary
The snowpack is about to experience a big change with a week of warm sunny weather ahead. Intense warming is expected on steep south-facing slopes, while dry snow may persist on north-facing slopes. Snow from last week's storms has been redistributed into fresh wind slabs by northwest winds. Roughly 40-80 cm of recent snow sits above crusts from the warm weather in late November. Most reports suggest the snow is bonding to the crusts so far, but there's potential for this layer to become reactive with the intense warming. Snow depths decrease rapidly below treeline, where the primary hazards are rocks, stumps, and open creeks.
Problems
Storm Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 6th, 2017 2:00PM