Archived

Avalanche Forecast

Apr 26th, 2012–Apr 27th, 2012

Alpine

2: Moderate

The avalanche danger rating in the alpine will be moderate

Treeline

2: Moderate

The avalanche danger rating at treeline will be moderate

Below Treeline

3: Considerable

The avalanche danger rating below treeline will be considerable

Alpine

2: Moderate

The avalanche danger rating in the alpine will be moderate

Treeline

2: Moderate

The avalanche danger rating at treeline will be moderate

Below Treeline

2: Moderate

The avalanche danger rating below treeline will be moderate

Alpine

2: Moderate

The avalanche danger rating in the alpine will be moderate

Treeline

2: Moderate

The avalanche danger rating at treeline will be moderate

Below Treeline

2: Moderate

The avalanche danger rating below treeline will be moderate

Regions: Jasper.

Cooler overnight temperatures will create a melt freeze crust from the alpine to treeline. The hazard is reduced while this crust is intact. Warm temperatures, sun exposure and precipitation in the form of rain will increase the hazard rapidly.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Freezing levels are uncertain on Friday

Avalanche Problems

Loose Wet

The freezing level will drop below treeline Thursday with rain turning to snow overnight. Expect continued unstable isothermal conditions below treeline, possibly extending to treeline as temperatures increase during the day.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Deep Persistent Slabs

Large triggers such as cornice failure could release large slab avalanches on several deep failure planes including ground, especially on steep slopes with a smooth rock slab bed surface.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3