Avalanche Forecast
Issued: Feb 21st, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
cgarritty,
Avalanche Canada
Reactive surface instabilities are likely forming in the highest elevations of the region. Rain continues to erode the snowpack everywhere else.
Summary
Confidence
Moderate
Avalanche Summary
No recent avalanches have been observed in this region, but conditions are changing in high alpine locations without many observations as yet.
Looking forward, anywhere snowfall or especially wind transport allows for accumulations greater than about 15 cm will make human triggerable slabs an increasing concern.
Snowpack Summary
Up to 20 mm of precipitation Tuesday brought a suspected 5-15 cm of new snow to the region's highest elevations as rain fell below about 1400 m.
Similar forecast weather on Thursday should make for wet surface conditions in most areas with windblown, likely reactive new snow accumulations in higher alpine locations.
Where new snow is falling, it has buried a mix of crust and wind-affected surfaces.
Below any new snow the remainder of the snowpack is well settled. Conditions remain rugged at lower elevations.
Â
Weather Summary
Wednesday night
Cloudy with continuing wet flurries bringing 5-10 cm of new snow to the alpine, diminishing at lower elevations to rain below about 1300 m. 15 to 20 km/h southeast alpine wind. Freezing level steady around 1400 m.
Thursday
Cloudy with continuing wet flurries bringing 5-15 cm of new snow to the alpine, diminishing at lower elevations to rain below about 1300 m. 10 to 25 km/h southeast alpine wind, easing. Treeline temperature 0 °C with freezing level steady around 1400 m.
Friday
Mainly cloudy. 20 to 40 km/h southwest alpine wind, increasing. Treeline temperature 0 °C with freezing level around 1400 m.
Saturday
Cloudy with scattered flurries bringing up to 5 cm of new snow, including overnight amounts. 30-40 km/h west alpine wind. Treeline temperature -2 °C with freezing level falling to 1000 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Wind slabs are most reactive during their formation.
- Snow is accumulating at higher elevations despite lower elevations being almost snow free
- Be alert to conditions that change with aspect and elevation.
Problems
Wind Slabs
New snow and wind are expected to form reactive new wind slabs above the rain/snow line.
Aspects: North, North East, East, West, North West.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Feb 22nd, 2024 4:00PM
