Avalanche Forecast
Issued: Feb 6th, 2021 8:00AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Persistent Slabs.
Andrew Jones,
Summary
Weather Forecast
Today will be cloudy with scattered flurries amounting to 5cm of accumulation. The alpine high will reach -8c with winds from the NW, 10-20km/h and the freezing level rising to 1000m. Trace accumulation is expected overnight as temperatures begin to plummet. An arctic outflow pattern will take over leaving us with dry and very cold conditions.
Snowpack Summary
Strong winds combined with recent storm snow created isolated wind slabs and deep loading in alpine and exposed treeline areas. The January 26th persistent week layer is buried 60-80cm and consists of decomposing surface hoar in sheltered areas and a thin crust on solar aspects. The mid and lower snowpack is quite strong, with no current concerns.
Avalanche Summary
One new size 2.5 avalanche was observed in the highway corridor yesterday.
Confidence
Problems
Wind Slabs
Moderate snowfall and strong winds have continued unabated since the February 2nd storm, creating an isolated wind slab problem in the alpine and exposed areas at treeline.
- Use caution in alpine lee areas. Recent snow is available for transport given the current winds.
- Be cautious as you transition into wind affected terrain.
Aspects: North, North East, East, South East, South, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
The Jan 26th layer down 60-80cm is consist of decomposing surface hoar in sheltered areas and a crust on solar aspects. Activity appears to be slowing down on this layer, though it remains reactive to human triggers in isolated areas at Treeline.
- Use caution on open slopes and convex rolls at treeline where buried surface hoar may be preserved.
Aspects: All aspects.
Elevations: Treeline, Below Treeline.
Likelihood
Expected Size
Valid until: Feb 7th, 2021 8:00AM
