Avalanche Forecast
Issued: Nov 26th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
Avalanche Canada,
Avalanche Canada
Fresh and reactive wind slabs may form at treeline and above as westerly winds increase on Wednesday.
Start conservative and watch for signs of instability like cracking or whumpfing.
Summary
Confidence
Low
Avalanche Summary
Touchy storm slabs up to size 2 were reported on Tuesday. The slabs were 20-30 cm deep and ran on east through south aspects at treeline and above.
Last weekend a natural avalanche cycle occurred, and numerous storm slab avalanches were reported up to size 2.5 in the alpine and treeline.
Forecast light to moderate winds may form reactive wind slabs in exposed terrain features, especially near ridgeline.
If you head out please consider submitting a MIN.
Snowpack Summary
10 to 15 cm of new snow fell on Sunday and Monday. This brings storm snow accumulations around 50 to 60 cm over the past week. Reports specifically from the Lizard Range show a buried layer of graupel down 60 (ish) cm.
In wind-exposed terrain, the new snow has likely have stiffened into a slab and could be reactive to riders.
The bottom of the snowpack has a crust that sits just above the ground. Snowpack depth is 100-180 cm at treeline.
Weather Summary
Tuesday Night
Cloudy with clear periods. 10 to 20 km/h west ridgetop wind. Treeline temperature -7 °C. Freezing level valley bottom.
Wednesday
Mostly cloudy with some sunny periods. Trace of new snow. 10 to 40 km/h west ridgetop wind. Treeline temperature -7 °C.
Thursday
Cloudy with isolated flurries 1 to 3 cm. 10 to 25 km/h west ridgetop wind. Treeline temperature -8 °C. Freezing level 800 m.
Friday
Cloudy with isolated flurries 1 to 3 cm. 10 to 35 km/h west ridgetop wind. Treeline temperature -10 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
- If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.
- Continue to make conservative terrain choices while the storm snow settles and stabilizes.
Problems
Wind Slabs
Fresh and reactive wind slabs could form on Wednesday. Especially at ridgeline and in exposed terrain features.Expect sluffing or isolated storm slabs in wind protected areas, like the trees.
Aspects: North, North East, East, South East, South, South West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 27th, 2024 4:00PM
