Avalanche Forecast

Issued: Jan 19th, 2012 9:54AM

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

Avalanche Canada triley, Avalanche Canada

Summary

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.

Problems

Wind Slabs

An icon showing 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

Valid until: Jan 20th, 2012 8:00AM