Avalanche Forecast
Issued: Feb 13th, 2020 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
ahanna,
Avalanche Canada
Watch for wind loaded pockets below ridge crests and steep roll-overs. Fresh wind slabs may be sensitive to human triggering.
Summary
Confidence
Weather Forecast
Thursday night: Up to 10 cm new snow. Winds moderate west to northwest. Freezing level 900 m.
Friday: Mix of sun and cloud. Winds moderate northwest. Freezing level 1000 m.
Saturday: Up to 10 cm new snow. Winds strong southwest. Freezing level around 1000 m.
Sunday: Flurries. Winds strong southwest. Freezing level around 800 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
Around 20 cm of recent storm snow sits over wind affected surfaces 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
- Be carefull around freshly wind loaded features.
- Recent wind has varied in direction so watch for wind slabs on all aspects.
- Be alert to conditions that change with elevation and sun exposure.
Problems
Wind Slabs
Winds have switched from southwest during the snowfall to northwest so wind slabs can be found on a variety of aspects. Watch for deep wind loaded pockets in lee features in the alpine.
Aspects: North, North East, East, South East, South.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Feb 14th, 2020 5:00PM
