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Archived

Avalanche Forecast

Feb 22nd, 2018–Feb 23rd, 2018
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
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
2: Moderate
The avalanche danger rating in the alpine will be moderate
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
2: Moderate
The avalanche danger rating in the alpine will be moderate
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

Regions: Little Yoho.

Extensive wind effect can be found in open areas. We are slowly gaining confidence with the snowpack, but a cautious approach to terrain is important at higher elevations as large avalanches are still possible.

Weather Forecast

The arctic ridge starts to break down Friday over the area with increasing cloud but still cold conditions for Friday. Winds will increase to moderate/strong above 3000m but will stay light at valley bottom. Some light snow over the weekend with 10-15 cm at treeline by Sunday evening and slightly warmer (but not warm!) temperatures.

Snowpack Summary

The upper pack consists of storm snow from earlier in the month that is starting to settle and bond. This overlies a well settled mid-pack. The previously reported weak layers within the mid-pack (Dec 15, Jan 6, and Jan 16 layers) are becoming stronger and only producing hard to no results with pit tests.

Avalanche Summary

No new avalanches reported or observed in Little Yoho in the last 48 hours.

Confidence

Avalanche Problems

Persistent Slabs

In the deeper snowpack areas west of the divide the previously reported persistent weak layers within the mid-pack (Dec 15, Jan 6, and Jan 16 layers) are becoming stronger and only producing hard to no results with pit tests.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Unlikely

Expected Size: 2 - 3.5