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Archived

Avalanche Forecast

Dec 3rd, 2015–Dec 4th, 2015
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: South Coast.

There is a great deal of variability across the region. These danger ratings are for areas like Duffey Lake that have received higher precipitation amounts.

Confidence

Poor - Due to the number and quality of field observations

Weather Forecast

The freezing level is forecast to drop down to about 1000 metres by Friday morning. Friday is forecast to be unsettled with flurries and periods of convective snow showers. The next big system moves onto the south coast on Saturday morning, however it is not expected to push very far inland. Expect 10-15 cms of snow combined with strong southwest winds and rising freezing levels. Snow continuing on Sunday with freezing levels rising up to about 1800 metres.

Avalanche Summary

No new avalanches reported.

Snowpack Summary

There is a great deal of variability in the region. The Duffey Lake area has received the most snow and rain during the recent storm, and it has also had the highest freezing levels. The Coquihalla has a shallower snowpack with slightly cooler temperatures. Storm slabs of varying depths are developing above a mixture of old surfaces left behind after the recent high pressure.

Avalanche Problems

Storm Slabs

Storm slabs continue to develop in the alpine, and may develop at treeline as the freezing level drops overnight.
Avoid all avalanche terrain during periods of heavy loading from new snow, wind, or rain.>Be alert to conditions that change with elevation.>

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 4