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

Avalanche Forecast

Dec 13th, 2015–Dec 14th, 2015
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
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
2: Moderate
The avalanche danger rating below treeline will be moderate
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Little Yoho.

Forecasters are still trying to determine exactly where the surface hoar is located. Typically it can be found between 1700m and 2150m in sheltered locations.

Weather Forecast

We expect to see a few cm's of snow and increasing SW winds into Sunday. Temperatures will be slightly warmer ranging from -2 to -10'C.

Snowpack Summary

In sheltered terrain between 1700m 2150m, a 30-40cm soft slab sits over the December 3rd surface hoar. This layer continues to produce whumphs and easy shears in many locations. No other significant shears have been observed. In the alpine isolated wind slabs exist in immediate lee areas.

Avalanche Summary

No new avalanches observed today in our forecast area.

Confidence

Avalanche Problems

Persistent Slabs

A 30-40cm soft slab sits over the Dec 3 surface hoar in many sheltered location between 1700m and 2150m. Continue to treat all steep open slopes below tree line with suspicion until you can rule out this weak layer.

  • Avoid open slopes and convex rolls at and below treeline where buried surface hoar may be preserved.

Aspects: North, North East, East, South East, South, South West.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2

Wind Slabs

With increasing winds Saturday night, continue to watch for wind slabs in typically suspicious areas: leeward and cross loaded slopes or slopes near ridge crests.

  • Use caution in lee areas. Recent wind loading have created wind slabs.

Aspects: North, North East, East, South East, South.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2