Archived

Avalanche Forecast

Nov 11th, 2017–Nov 12th, 2017

Alpine

1: Low

The avalanche danger rating in the alpine will be low

Treeline

1: Low

The avalanche danger rating at treeline will be low

Below Treeline

Below Threshold

The avalanche danger rating below treeline will be below threshold

Alpine

1: Low

The avalanche danger rating in the alpine will be low

Treeline

1: Low

The avalanche danger rating at treeline will be low

Below Treeline

Below Threshold

The avalanche danger rating below treeline will be below threshold

Alpine

1: Low

The avalanche danger rating in the alpine will be low

Treeline

1: Low

The avalanche danger rating at treeline will be low

Below Treeline

Below Threshold

The avalanche danger rating below treeline will be below threshold

Regions: Banff Yoho Kootenay.

Winter is on, people are skiing, and many ice climbs are now in. Isolated wind slabs are the only problem currently, but remember a small slide can have big consequences, especially in climbing terrain. SH

Weather Forecast

Continued mild temperatures and light snow for Monday. Some models are showing heavier snowfall next week, west of the Divide. Keep your fingers crossed.

Snowpack Summary

An average of 30-50 cm of snow at treeline with up to 100 cm in alpine locations. A crust formed prior to Halloween is down 10-15 cm helping provide support for skiers. This crust disappears on N aspects around 2500m. Previous alpine winds have created pockets of wind slab. On glaciers be wary of the ice-snow interface and check it for instability.

Avalanche Summary

3 small sluffs and one piece of cornice were noted on 93N today (Saturday).

Confidence

Due to the number of field observations

Avalanche Problems

Wind Slabs

This is a typical early winter avalanche problem that exists in isolated pockets where the snow has drifted into small wind slabs and the slope is steep enough to slide. Mainly a concern for ice climbers in steep gullies or walking above cliffs.

Be careful with wind loaded pockets while approaching and climbing ice routes.

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

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2