Avalanche Forecast
Issued: Feb 20th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Loose Dry and Wind Slabs.
CB,
Avalanche Canada
Stick to polar aspects and sheltered terrain to find the best skiing.
Expect sluffing in steep terrain and watch for exposure to cliffs and terrain traps.
Summary
Confidence
Moderate
Avalanche Summary
No new natural avalanches observed along the highway corridor Tuesday.
On Monday, a few point-release dry sluffs were noted from steep terrain on Tupper and Macdonald.
In the past week, riders have been triggering unexpected avalanches, near ridgetop in wind effected terrain. These avalanches failed on a prominent crust down ~30-50cm. Terminal Pk & Connaught drainage
Snowpack Summary
5-10 cm of new snow freshly covers a spring like conditions. These include: soft snow in protected terrain on polar aspects, breakable crust on steep solar aspects, and variable wind slab in exposed terrain at ridge top.
A strong, supportive crust (widespread below 2500m) is down 30-50cm, makes for challenging travel and a layer for avalanches to slide on.
The mid-lower snowpack has strengthened. Isolated pockets of shallow, weak snow can be found in the high alpine.
Weather Summary
A weak disturbance this week will bring clouds, light snow, and freezing levels hovering around 1300 m.
Tonight: Cloudy/flurries, 5 cm, Alp low -5°C, ridgetop winds SW light gusting to Mod.
Wed: Cloudy/isolated flurries, Alp high -5°C, light SW winds.
Thurs: Cloudy/isolated flurries, Alp high -6°C, mod W winds.
Fri: Flurries, 5-10cm, Alp high -6°C, light/gusting mod SW wind.
Terrain and Travel Advice
- Loose avalanches may start small but they can grow and push you into dangerous terrain.
- Be cautious of buried obstacles especially below treeline.
Problems
Loose Dry
Incoming storm snow will be landing on a very firm sun crust on solar aspects and a variety of surfaces on polar aspects. Steep slopes will try to shed this new snow, which could gather significant mass below and be very problematic in terrain traps.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Wind Slabs
Recent strong NE winds have created firm wind slabs in the Alpine. Though stubborn to trigger, there may be pockets of slab sitting on weak facets, waiting for the right load to set them free to flow downhill.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Feb 21st, 2024 4:00PM
