Register
Get forecast notifications
Create an account to receive email notifications when forecasts are published.
Login
Archived

Avalanche Forecast

Feb 8th, 2014–Feb 9th, 2014
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
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
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Northwest Coastal.

Confidence

Fair - Intensity of incoming weather systems is uncertain on Monday

Weather Forecast

Sunday: Mainly clear / Light northerly winds / Alpine temperatures at -15Monday: Heavy snowfall / Moderate to strong southwest winds / Freezing level at surfaceTuesday: Moderate to heavy snowfall / Moderate to strong southwest winds / Freezing level at surface

Avalanche Summary

On Friday a skier accidentally triggered a size 1 wind slab on a north facing roll at 1700m. The faceted surface snow is also sluffing readily in steep terrain with skier traffic.

Snowpack Summary

A highly variable snow surface includes surface facets, surface hoar, thin wind slabs, and scoured crust, or any combination thereof. Remember to take stock of current surface conditions if you're out in the mountains. Once buried by a cohesive slab, surface hoar or a thin layer of facets sitting on a crust almost always becomes a weak layer, and will often persist.In sheltered areas, large surface hoar is growing on approximately 10cm of faceted old storm snow sitting on the late January crust, which is likely faceted and laminated and could have surface hoar on top. The entire snowpack is likely faceting to some degree, especially where it is shallow. Basal facets and depth hoar are likely, but triggering is only a concern in thin and variable snowpack areas with large triggers.

Avalanche Problems

Wind Slabs

Variable winds have created pockets of wind slab in exposed terrain. Although relatively small, they continue to be reactive to the weight of a skier/rider in some areas.
Avoid exposure to terrain traps where the consequences of a small avalanche could be serious.>Be cautious as you transition into wind affected terrain.>

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2