Avalanche Forecast

Issued: Nov 15th, 2018 4:00PM

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

snow safety, Parks Canada

Banff Yoho Kootenay.

Watch for fresh windslabs and signs of deeper instabilities. There are great variations in local snow depth by aspect. Take the time to make your own judgement of early season stability.

Summary

Weather Forecast

While more snow is still expected, forecast amounts should remain below threshold.

Snowpack Summary

20 cm of new snow overlies various raincrusts and facets. Windslabs are expected in the alpine.

Avalanche Summary

No new avalanches reported today.

Confidence

Problems

Wind Slabs

Strong winds have created windslabs in leeward areas that are becoming stiff enough for a human trigger.

Use caution in lee areas. Recent wind loading has created wind slabs.

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

1 - 2

Deep Persistent Slabs

This problem is found in most north facing (shaded) terrain up to 2800m, and will become more reactive as the storm deposits more load.

Whumpfing is direct evidence of a buried instability.If you are increasing your exposure to avalanche terrain, do it gradually as you gather information.

Aspects: All aspects.

Elevations: Alpine.

Likelihood

Unlikely - Possible

Expected Size

1 - 2

Valid until: Nov 16th, 2018 4:00PM