Avalanche Forecast

Issued: Jan 13th, 2012 9:15AM

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

Avalanche Canada jlammers, Avalanche Canada

Summary

Confidence

Good - -1

Weather Forecast

Saturday: Trace amounts of snow expected in the morning with a clearing pattern developing in the afternoon / Light westerly winds switching to Northerly in the afternoon / -12.0 @ 1500mSunday: Clear skies / Light to moderate northerly winds / -15.0 @ 1500mMonday: Clear skies / Moderate to strong northeast wind / -28 @ 1500m

Avalanche Summary

1 size 2, and 1 size 3 were reported from the Bear Pass area. No other avalanches were reported from the region. This may speak more to limited observations due to weather, rather than actual conditions.

Snowpack Summary

Some areas (Terrace, Kaziks) are reporting an alpine snowpack of 5 metres. In these areas the mid-december surface hoar-facet layer is buried down about 250 cm and has not been reactive for quite some time. At this time the biggest issue in the region seems to be new snow instabilities. Although they can be quicker to heal than other weaknesses, they may be highly destructive, especially with this season's pattern of heavy accumulations of snow combined with strong winds.The region received about 20cm of new snow on thursday night which added to the heavy accumulations from last weekend. Wind values during thursday's snowfall are uncertain in the Terrace area. In spots that experienced strong winds during the storm may have thick windslabs that may take another couple of days to settle. The mid and lower snowpack is generally well settled and strong.Be cautious of large, recently developed cornices. They may be destructive by themselves, or they can become a trigger for an avalanche on the slope below.

Problems

Wind Slabs

An icon showing Wind Slabs
Expect widespread windslabs on lee features at treeline and in the alpine.

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

Elevations: Alpine, Treeline.

Likelihood

Likely

Expected Size

2 - 5

Storm Slabs

An icon showing Storm Slabs
Thursday's snowfall will add to a layer of recent storm snow that may take a couple of days to bond to the old surface.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Likely

Expected Size

2 - 4

Valid until: Jan 14th, 2012 8:00AM