Avalanche Forecast

Issued: Nov 18th, 2011 9:08AM

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

mpeter, Avalanche Canada

Kootenay Boundary.

This bulletin is based on limited data. Local variation in conditions and danger levels are likely to exist. To produce more accurate forecasts, we need information. Please send an email to forecaster@avalanche.ca.

Summary

Confidence

Poor - Due to limited field observations

Weather Forecast

Saturday & Sunday: Cool and dry, with temperatures reaching -10 and Easterly winds easing to calm. No precipitation. Monday: Clouds developing with a chance of flurries later in the day. Winds turn Westerly but remain light.

Avalanche Summary

Observations are extremely limited at this time. No new avalanches have been reported.

Snowpack Summary

Up to 15cm of new snow has fallen in the last 24hrs. Snowpack depths are likely in the 60-80cm range at about 1600m and about 125cms at 2000m. In the upper snowpack, windslab and storm snow instabilities exist within previous accumulations of up to 80cms+. Watch for the possibility of reverse loading with the recent Easterly winds. There's bound to be variability throughout the region and one slope/mountain/drainage may differ significantly from the next. A conservative approach combined with careful investigation of local conditions is advised until we get a better understanding of conditions.

Problems

Wind Slabs

Variable winds have created the potential for windslabs on all aspects.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 3

Valid until: Nov 19th, 2011 8:00AM