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Archived

Avalanche Forecast

Mar 5th, 2022–Mar 6th, 2022
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Little Yoho.

Strong solar radiation Sunday, could produce increased avalanche activity on southerly aspects.

Weather Forecast

Clear weather Sunday will continue to produce strong solar outputs on southerly aspects. Freezing levels will remain near valley bottom. Increase cloud cover Monday will bring a trace a precipe and moderate to strong ridge top winds.

Snowpack Summary

5-15cm of new snow overlies a melt freeze crust from Thursdays warming, this crust can be found up to 1900m. Above 1900m, 40 cm of previous storm snow has solidified into a slab overlying the February 16 sun crust on steep southerly aspects. This combination should now be watched closely, as it produces whumphs and tests indicate propagation.

Avalanche Summary

Increased solar outputs Saturday initiated isolated loose dry activity out of extreme terrain. Evidence of recent avalanche activity on the Feb 16 persistent weak layer was observed on steep southerly aspects at treeline, producing avalanches to size 1.5.

Confidence

Avalanche Problems

Persistent Slabs

This crust facet layer 30 to 40cm down has gradually developed a slab above it. Be very careful on steep treeline and alpine slopes that face south and west. When traveling in avalanche terrain It's easy to dig down and look for the layer.

  • Be aware of the potential for wide propagations due to the presence of hard windslabs.

Aspects: South East, South, South West, West.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2.5