Avalanche Forecast
Issued: Dec 5th, 2017 4:00PM
The alpine rating is Persistent Slabs and Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Weather Forecast
A strong high pressure system is building in the region. Winds will ease to light from the NW on Wednesday. Temperatures are rising, and freezing levels are forecast to hit ~1500m on Wed, and 2000 - 2500m on Thursday and Friday. We may see an inversion set up towards the end of this period.
Snowpack Summary
Above 2500m, the surface snow has been blown into windslabs in exposed areas. Below 2500m, 30 -50 cm of snow lies over the Nov 27th and Nov 23rd crusts. Both of these now overly the Halloween crust/ facet layer that sits 30-50cm above the ground. This lower layer is a facet layer above 2500m and a crust below. Some surface hoar is forming below TL
Avalanche Summary
Some small loose dry avalanches were observed in steep terrain triggered by wind on Mt Fairview. Additionally, a couple size two slabs were observed near the Pulpit area on the Icefields Parkway. These were on steep NE facing terrain and likely triggered by windloading and sluffing. .
Confidence
Freezing levels are uncertain on Thursday
Problems
Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Wind Slabs
Aspects: North, North East, East, South East.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Dec 6th, 2017 4:00PM