Archived

Avalanche Forecast

Dec 17th, 2017–Dec 18th, 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

1: Low

The avalanche danger rating below treeline will be low

Alpine

2: Moderate

The avalanche danger rating in the alpine will be moderate

Treeline

1: Low

The avalanche danger rating at treeline will be low

Below Treeline

1: Low

The avalanche danger rating below treeline will be low

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

1: Low

The avalanche danger rating below treeline will be low

Regions: Jasper.

With new snow forecast to fall on a variety of aged surfaces, watch for the hazard to increase as the skiing improves.

Weather Forecast

Sunday night through Monday morning a passing cold front will bring cooling temps, up to 10cm of snow, and moderate winds from the SW.On Tuesday winds will shift to NE and increase in intensity overnight. This northerly flow will bring colder temps and further accumulations of up to 10cm of snow.

Snowpack Summary

Incoming snow will fall on a variety of old surfaces: surface hoar up to 25mm in sheltered areas, a thin sun crust on steep solar aspects and wind hardened surfaces in exposed areas. There are 2 buried crusts in the snowpack, one is 30 cm below the surface around treeline, and the Halloween crust is near the base and extends from 2200 to 2900m.

Avalanche Summary

No highway patrol occurred on Sunday and nothing new was reported.

Confidence

Forecast snowfall amounts are uncertain

Avalanche Problems

Loose Dry

Incoming new snow and wind will initially cause small sluffs out of steep terrain.

Use caution above ledges and cliffs where small avalanches may have severe consequences.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1