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

Avalanche Forecast

Mar 1st, 2012–Mar 2nd, 2012
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
4: High
The avalanche danger rating at treeline will be high
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable

Regions: Banff Yoho Kootenay.

Not much has changed in the last 24 hours; light winds, a skiff of snow. This will change come the weekend. We may get up to 20cm of snow accompanied by west winds. This should wake up the nasty Valentine layer and we expect a natural cycle Saturday.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Avalanche Problems

Persistent Slabs

Snow depths over the Valentines surface hoar and suncrust on steep solar aspects range from 20cm E of the Divide, to 45+cm at Sunshine and Yoho. Yesterday a large slide off the top of Fairview failed across the entire bowl on this layer. Impressive!

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 2 - 3

Wind Slabs

Moderate winds this week have also created thin, but stiffer wind slab conditions 25-35 cm deep on ridgetop lee terrain. These have been seen to step down to the Valentine layer.

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

Elevations: Alpine.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Deep Persistent Slabs

Recent trips east of the Divide have found a shallow, weak snowpack. Tests done showed sudden collapse results on the basal facets. It is still possible to trigger the entire slope from shallow, thinly covered areas.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2