Avalanche Forecast
Issued: Dec 27th, 2019 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Loose Dry.
Jasper Snow Safety,
Parks Canada
Constant SW moderate winds have created windslabs that are ripe for human triggering.
Summary
Weather Forecast
The weekend will bring cloudy and sunny periods and a slight warming trend. Day time highs of -5 on sunday. No precipitation expected over the weekend, The winds will continue into Saturday in the moderate westerly range tapering off for Sunday.
CAA's Mountain Weather Forecast for more specific details
Snowpack Summary
6-20mm Surface Hoar growing up to 2200m. Consistent Moderate SW winds for the past 36 hours have created wind slabs in lee features. This overlies a mosaic of buried wind slabs and facetted weak layers. Basal layers continue to develop into larger facets and depth hoar.
Avalanche Summary
Several wind slabs to Size 2 noted in immediate Lee features Treeline and above.
Confidence
Problems
Wind Slabs
The first bit of wind after the storm on Dec 21, fresh wind slabs were noted building today
- Be careful with wind loaded pockets while approaching and climbing ice routes.
- Use caution in lee areas. Recent wind loading have created wind slabs.
Aspects: North, North East, East, South East, South.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Dry
Caution Ice climbers in confined features with steep walls holding dry loose snow
- Use caution above ledges and cliffs where small avalanches may have severe consequences.
- If triggered dry loose point releases can form deeper deposits in terrain traps.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 28th, 2019 4:00PM
