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Archived

Avalanche Forecast

Jan 31st, 2019–Feb 1st, 2019
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
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
2: Moderate
The avalanche danger rating below treeline will be moderate
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

Regions: Little Yoho.

Friday marks a change in conditions with an incoming storm. Pay attention to new snowfall amounts and what the wind is doing.

Weather Forecast

Snow beginning on Friday with various models forecasting between 10 and 20 cm along the divide by the end of the day. More snow on Saturday (up to 30 cm) and then very cold arctic air settles in for Sunday. Winds forecast to be mod to strong from the SW on Friday.

Snowpack Summary

Some wind effect in alpine and small windslabs exist in immediate lees. The mid and lower pack is generally well settled.

Avalanche Summary

No new avalanche activity

Confidence

Intensity of incoming weather systems is uncertain on Friday

Avalanche Problems

Wind Slabs

Fresh wind slabs can be expected from forecasted new snow and winds on Friday.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5

Deep Persistent Slabs

In Little Yoho the mid and lower pack is generally well settled with no significant shears. In some areas where the snowpack is shallower the Dec 10 persistent facet layer is producing shears in the hard range.
Avoid thin, rocky or unsupported slopes.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Unlikely

Expected Size: 1 - 3