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Archived

Avalanche Forecast

Jan 24th, 2017–Jan 25th, 2017
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
1: Low
The avalanche danger rating below treeline will be low
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: Little Yoho.

Weather Forecast

Mixed sun and cloud with no snow forecast through Thursday. Winds will be light from the north on Wednesday. Freezing levels will be near the surface.

Snowpack Summary

Below 1900 metres the midpack is weak and facetted. Above this elevation the snowpack is more settled. In the alpine some isolated windslabs persist from last weeks SW winds. Snowpack tests in Emerald Lake area found isolated areas of surface hoar below last weeks storm snow. Where found, this surface hoar was producing easy shears.

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Avalanche Summary

Avalanche control in Yoho Park on Monday produced numerous size 2 and 2.5 avalanches (Mt Dennis). One size 3 was triggered on Mt Bosworth. No fresh natural avalanches in this area have been observed in past 48 hours

Confidence

Avalanche Problems

Storm Slabs

Last weeks storm snow has settled into a 20-40 cm slab. This slab is starting to settle out, but snowpit tests show this layer to be reactive in some locations, particularly around treeline where surface hoar has been found.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2

Persistent Slabs

Various moderate to hard shears have been identified in the mid-pack. Although hard to trigger, if you find the sweet spot there is potential for larger avalanches.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3