Avalanche Forecast
Issued: Mar 28th, 2021 3:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
JMackenzie,
Avalanche Canada
A significant storm could bring 15 to 25cm of fresh snow with strong NW winds. Snowfall amounts are uncertain. Keep an eye on localized conditions. Some parts of the region could tip into the HIGH avalanche danger rating.
Summary
Confidence
Moderate -
Weather Forecast
Between 15 and 25cm of new snow is expected by Monday evening. Temperatures will dip to near -20 in the morning before warming to -12. Winds will shift to the NW and be in the strong range.
Avalanche Summary
Nothing new observed today, but visibility was very limited.
Snowpack Summary
Only a few cm's had fallen by the time forecasters left the field Sunday at midday, but it was snowing hard. The bond at this new interface so far appears good, but wind slab formation was observed in open areas at Treeline. These slabs were already up to 20cm thick and some cracking was observed. Monday could see 15 to 25cm more snow with strong NW winds. If this comes true, expect to find widespread wind slabs through the terrain.
Terrain and Travel
- Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
- Closely monitor how the new snow is bonding to the crust.
- Avoid lee and cross-loaded terrain.
Problems
Wind Slabs
New snow and strong winds are forming widespread wind slabs in Alpine and Treeline terrain. These will be primed for skier triggering on Monday.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Mar 29th, 2021 3:00PM
