Avalanche Forecast
Issued: Feb 12th, 2020 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
ahanna,
Avalanche Canada
New snow and wind will build storm slabs through the day Thursday. Where new snow depths exceed 20 cm, avalanche danger will rise to CONSIDERABLE in the alpine.
Summary
Confidence
Moderate - Uncertainty is due to the track & intensity of the incoming weather system.
Weather Forecast
Wednesday night: Cloudy. Winds moderate southwest. Freezing level 900 m.
Thursday: 10-25 cm new snow. Winds moderate southwest. Freezing level 1000 m.
Friday: Flurries. Winds moderate southwest. Freezing level 800 m.
Saturday: 10-20 cm new snow. Winds strong southwest. Freezing level around 1000 m.
Avalanche Summary
A small skier triggered slab avalanche on the rain crust was reported on Saturday (see this MIN report). The bond at this interface appears to be strengthening over time.
Snowpack Summary
Storm slabs will build through the day Thursday. The new snow is falling on wind affected snow in the alpine and dense, well settled snow at lower elevations. A thick rain crust sits 40-50 cm below the surface. The snowpack below consists of moist to wet snow and is well settled. Snowpack depths are in the range of 200-250 cm around the peaks of the North Shore mountains (1400 m), tapering quickly with elevation to almost nothing below 1000 m.
Terrain and Travel
- Watch for fresh storm slabs building throughout the day.
- Dial back your terrain choices if you are seeing more than 20 cm of new snow.
Problems
Storm Slabs
10-25 cm of new snow, moderate wind and mild temperatures are forming new storm slabs. Watch for deep wind loaded pockets in lee features in the alpine.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Feb 13th, 2020 5:00PM
