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Archived

Avalanche Forecast

Apr 4th, 2018–Apr 5th, 2018
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
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: South Coast.

Winter continues. Snow forecast for Thursday is expected to create storm slabs at upper elevations.

Confidence

Moderate - Intensity of incoming weather systems is uncertain

Weather Forecast

THURSDAY: Rain to about 1300 m, with up to 25 cm wet snow falling at higher elevations. Moderate to strong southerly winds. Freezing level near 1500 m.FRIDAY: Light snow. Light southerly winds. Freezing level near 1500 m.SATURDAY: Light to moderate snow, falling as rain below treeline. Light winds. Freezing level rising to 1750 m.Weather models disagree on the amount of precipitation expected this week.

Avalanche Summary

No new avalanches have been reported.

Snowpack Summary

Alpine areas around Squamish are expected to develop new storm slabs on Thursday. New snow will add to recent snow which overlies variable surfaces including crusts and facets. Little is known about these buried weak layers, but they are more likely to be problematic on shady aspects. The mid and lower snowpack are generally strong.At treeline and below, a strong spring snowpack exists. Rain may break down surface crusts on Thursday, but the snowpack is expected to regain strength once the temperature drops again.

Avalanche Problems

Storm Slabs

Snow and wind are expected to build slabs which could be triggered with the weight of a person.
Minimize exposure during periods of heavy loading from new snow, wind or rain.Use conservative route selection: choose moderate angled and supported terrain with low consequence.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2