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Archived

Avalanche Forecast

Mar 21st, 2018–Mar 22nd, 2018
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Glacier.

A storm slab may be found above tree line and into the alpine.

Weather Forecast

Mainly cloudy with isolated flurries throughout the day. Temperature will rise to +5 in valley bottoms and to -3 in the alpine with a freezing level of 1700m. Winds will remain light from the southeast. Thursday will see the arrival of more snow / rain, strong winds and a high freezing level as a warm low pressure system moves into our region.

Snowpack Summary

15cm of storm snow in the past two days. Above treeline the new snow remains dry and unconsolidated burying a previous melt freeze crust that extends up to 2300m on all aspects and to mountaintop on solar aspects. Below treeline the upper snowpack contains a series of crusts at or near the surface and is becoming isothermal at valley bottom.

Avalanche Summary

Limited natural avalanche activity over the last couple days, except out of steep unsupported terrain.

Confidence

Avalanche Problems

Storm Slabs

15cm of recent snow and moderate winds have built a storm slab and may be most problematic where it's sitting on a crust, or on surface hoar over a crust where exposed to the wind.
Convex features and steep unsupported slopes will be most prone to triggering.Be careful with wind loaded pockets, especially near ridge crests and roll-overs.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2