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Avalanche Forecast

Jan 19th, 2012–Jan 20th, 2012
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
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Cariboos.

Confidence

Fair - Forecast snowfall amounts are uncertain on Saturday

Weather Forecast

Cold arctic air should be replaced by warmer air and precipitation that is moving into the area from the Pacific coastal areas. Alpine temperatures are expected to rise to about -14.0 in the alpine on Friday. Precipitation should start by early afternoon and accumulate up to about 15 cm by Saturday morning. Winds will also increase overnight Friday to moderate westerly by Saturday morning. The freezing level is forecast to remain near valley bottoms during the forecast period. Snow should continue during the day on Saturday bringing another 10-20 cm by Sunday. The western upslope areas of the Monashees and the Cariboos may get close to double these amounts.

Avalanche Summary

No significant avalanche activity has been reported from the region recently.

Snowpack Summary

Some surface facetting during the recent cold spell. Strong temperature gradient in the top 30 cm. Stiff windslabs have developed in the alpine and at treeline. Some areas reporting a crust that is now buried by about 30 cm of cold dry light snow. Strong well settled mid-pack.

Avalanche Problems

Wind Slabs

Some stiff windslabs have developed on south through west aspects. Expect new windslabs to develop on northerly aspects due to the approaching storm.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 2 - 4