Avalog
Register
Get forecast notifications
Create an account to receive email notifications when forecasts are published.
Register
Login
Archived

Avalanche Forecast

Jan 18th, 2017–Jan 19th, 2017
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
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
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.

Be cautious in the new snow.  Wind and storm slabs may be easily triggered.

Weather Forecast

Further 7-10 cm possible until Thursday.  Moderate SW winds continuing, easing on Friday.  Temperatures will gradually fall into the weekend to seasonal levels. 

Snowpack Summary

Recent storm snow (between 10-20 cm) with heavier amounts in the southern forecast area has formed windslab on lee aspects from previous strong to extreme SW alpine winds.  Storm slabs may be present on lower elevation slopes.  These slabs are sitting on buried wind slabs overlying weak facets from the mid-pack to ground.

Avalanche Summary

No avalanche patrol today.  No avalanche observations reported.

Confidence

Due to the number of field observations on Thursday

Avalanche Problems

Wind Slabs

The interface between the new and old slabs could be touchy.
Use caution in lee areas. Recent wind loading has created wind slabs.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3

Storm Slabs

Storm slabs may be present  especially at tree-line.  The weight of this may overload the weak facets below.
Use caution in alpine and open treeline lees. Recent snowfall has created storm slabs.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Deep Persistent Slabs

Concern for new snow overloading the season's weak faceted basal layers.
Use conservative route selection, choose moderate angled and supported terrain with low consequence.If triggered the storm slabs may step down to deeper layers resulting in large avalanches.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3