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Archived

Avalanche Forecast

Feb 3rd, 2022–Feb 4th, 2022
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
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
3: Considerable
The avalanche danger rating in the alpine will be considerable
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.

The soft snow from a few days ago has been blown into windslabs from Thursday's strong winds. These slabs overlie a newly buried weak layer (Jan 30) of surface hoard and facets that should be monitored closely.

Weather Forecast

The NW flow continues over the region with a pacific system embedded moving over the region starting Thursday night and through Friday. Snowfall ranges are expected between 10-20 cm with the most in westerly areas. Continued strong winds through the storm and temperatures below freezing.

Snowpack Summary

Strong winds have created windslabs in alpine and treeline areas that are reactive to skier triggers. These windslabs sit on the Jan 30 layer of surface hoar and facets and may bond poorly. This problem will build for Friday with additional snowfall and continued strong winds. Shallow snowpack areas remain weak and facetted.

Avalanche Summary

Road patrol of Hwy 93N today showed no new avalanches, but both Sunshine Village and Lake Louise ski areas reported size 1.5 windslabs triggered by skiers within their boundaries.

Confidence

Avalanche Problems

Wind Slabs

Elevated winds from the west and northwest over the next few days have blown the new light snow around. This has created new windslabs that overlie a weak layer of surface hoard and suncrust buried Jan 30.

  • Be careful with wind loaded pockets, especially near ridge crests and roll-overs.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2