Avalanche Forecast
Issued: Jan 1st, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Loose Dry.
Kate Ryan,
Keep a close eye on wind values. There is a lot of snow available for transport!
Expect the avalanche danger to increase as the storm progresses.
Summary
Weather Forecast
A brief reprieve from the arctic air with the arrival of a frontal system tonight.
Tonight: 6cm snow. Wind SW-50km/h. Alpine Low -17C.
Sunday: 9cm snow. Wind S-35km/h. Alpine high -11C.
Monday: 13cm snow. Wind SW-45 km/h. Alpine high -8C.
Snowpack Summary
The upper snowpack continues to weaken with the cold temps. Small pockets of windslab (5-30cm thick) exist at the surface of all elevations along ridge-crests, and in open features exposed to down-flowing winds. The Dec 1 crust is buried 70-120cm, with weak, sugary snow above and below it (especially in shallow areas).
Avalanche Summary
No new avalanches were observed in the highway corridor today.
On Friday, tree bombs triggered a few small loose dry avalanches, and one size 2.0 windslab on solar aspects.
Thursday, a cornice fall triggered a small (size 1.5) windslab in the Connaught slidepath.
Confidence
Timing, track, or intensity of incoming weather system is uncertain
Problems
Wind Slabs
Expect the development of fresh windslabs with the gusty arrival of this next storm.
If triggered, these slabs could possibly step down to the Dec 1 crust, approx 70-120cm deep.
- Watch for signs of instability such as whumpfing, or cracking.
- Use caution in lee areas. Wind loading could create slabs.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Loose Dry
The upper snowpack continues to loose cohesion due to the cold temps. Expect sluffing in steep terrain, particularly where sheltered from the wind.
- Be cautious of sluffing in steep terrain, particularly where the debris flows into terrain traps.
- Be aware of party members below you that may be exposed to your sluffs.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Jan 2nd, 2022 4:00PM
