Avalanche Forecast

Issued: Dec 3rd, 2014 8:04AM

The alpine rating is moderate, the treeline rating is low, and the below treeline rating is low. Known problems include Wind Slabs.

Avalanche Canada Peter, Avalanche Canada

The weather pattern starts to change to a mild and moist southwest flow on Thursday. Expect temperatures to rise Thursday with precipitation likely later in the day.

Summary

Confidence

Fair - Freezing levels are uncertain

Weather Forecast

The weather pattern will shift to a milder and wetter southwest flow starting on Thursday. Clouds increase and light to moderate precipitation should begin by Thursday afternoon. Another pulse of precipitation is expected Friday afternoon into Saturday morning. Temperatures and freezing levels vary significantly from south to north. They could rise to 2000 m south of Whistler by Friday afternoon, and should hover near 1000 m north of Whistler. Ridge top winds are moderate to strong from the Southwest.

Avalanche Summary

No new avalanches reported in the past few days.

Snowpack Summary

Surface hoar and near surface facets are reported to be growing during the cold and clear weather. Strong Northeast outflow winds have created 10-40 cm deep wind slabs since Friday, and recent strong and variable winds have since loaded and reverse loaded the light dry snow that came at the end of the storm. Below this new snow is a solid weight bearing crust in all but the highest alpine slopes. There is a chance that a consolidated slab exists in some areas in the alpine above a deeply buried crust from earlier in November.

Problems

Wind Slabs

An icon showing Wind Slabs
Changing winds and light snowfalls have combined to develop wind slabs that may be found on any aspect. The winds have scoured some areas back to the crust that developed from the rain at the end of the last storm.
Be alert to conditions that change with elevation.>Avoid travelling in areas that have been reverse loaded by winds.>

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

1 - 3

Valid until: Dec 4th, 2014 2:00PM

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