Avalanche Forecast
Issued: Mar 4th, 2020 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
mark herbison,
Parks Canada
Continued snow and wind will keep the avalanche danger in the region elevated. Avoid travel in avalanche terrain.
Large avalanches from upper elevations can reach terrain below tree line.
Summary
Weather Forecast
Mainly cloudy on Thursday with another 5-10cm of snow, temp range of -16 to -4 and consistently strong SW winds. Thursday night into Friday will see another 10cm and gradually decreasing winds. Another 10cm forecasted for Saturday with cooling temps and light winds.
Snowpack Summary
30-40 cm of storm snow in the past few days brings the weekly total to ~60cm. Strong to extreme Westerly winds continue to form storm/wind slab at all elevations. Watch for buried sun crust on steep solar aspects. Generally this area has a strong snowpack, with snow depths over 300 cm in the alpine.
Avalanche Summary
Several natural storm slab avalanches up to sz 2.5 observed along highway 93S today where intense wind loading was occurring.
With continued strong to extreme winds and incoming snow in the forecast over the next few days, expect natural avalanche activity to increase.
Confidence
Problems
Storm Slabs
Expect to find slab formation on lee aspects and open areas from the alpine to below tree line. Loose dry sluffing from steep terrain is also a concern, especially in gulleys, terrain traps and above cliffs.
- Watch for fresh storm slabs on exposed lee slopes and open areas at all elevations.
- Be careful with wind loaded pockets while approaching and climbing ice routes.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Mar 5th, 2020 4:00PM
