Archived

Avalanche Forecast

Apr 10th, 2012–Apr 11th, 2012

Alpine

3: Considerable

The avalanche danger rating in the alpine will be considerable

Treeline

3: Considerable

The avalanche danger rating at treeline will be considerable

Below Treeline

2: Moderate

The avalanche danger rating below treeline will be moderate

Alpine

3: Considerable

The avalanche danger rating in the alpine will be considerable

Treeline

3: Considerable

The avalanche danger rating at treeline will be considerable

Below Treeline

2: Moderate

The avalanche danger rating below treeline will be moderate

Alpine

3: Considerable

The avalanche danger rating in the alpine will be considerable

Treeline

2: Moderate

The avalanche danger rating at treeline will be moderate

Below Treeline

1: Low

The avalanche danger rating below treeline will be low

Regions: Banff Yoho Kootenay.

Freezing levels are forecast to rise to 3200m on wed PM. A weak overnight freeze, means that stability will deteriorate early. Back to winter on Thurs, with10-15cm of snow in the ALP/TL with cooling temps. Start and finish early on wed. IJ

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Freezing levels are uncertain

Avalanche Problems

Loose Wet

Loose wet slides can be expected on solar aspects, especially in the PM. These slides have the potential to trigger a large slab avalanche on one of the deeper weak layers, and there has been evidence of this occurring in the last few days.

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

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 3

Deep Persistent Slabs

Both the Valentines surface hoar and the basal facets are still causing isolated slides. Areas of most concern are terrain with weak, shallow and variable snow-packs, especially in the PM sun. Large triggers like cornices may also trigger this layer.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 4