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Avalanche Forecast

Dec 6th, 2019–Dec 7th, 2019
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
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: Purcells.

Flurries accompanied by moderate southwest wind will continue to develop fresh wind slabs at upper elevations.

Confidence

Moderate - Uncertainty is due to the timing, track, & intensity of the incoming weather system.

Weather Forecast

Friday Night: Cloudy with flurries, accumulation 5 cm. Alpine temperature -4 C, moderate southwest wind.

Saturday: Scattered flurries, 5-10 cm. Alpine temperature -5, moderate southwest wind .

Sunday: Mix of sun and cloud. Alpine temperature -6, light north wind.

Monday: Cloudy with sunny breaks. Alpine temperature -7, light to moderate northwest wind.

Avalanche Summary

Recent reports indicate explosives triggered a size 2 storm slab avalanches and several size 1-2 wind slab avalanche, mostly on northerly alpine features.

Snowpack Summary

15-30 cm of new snow accumulated in the north through this week with smaller amounts around Panorama and south. The new snow has covered surface hoar in sheltered areas and various wind-affected surfaces elsewhere.

This old, wind-affected snow sits over a crust on solar aspects in the alpine or a surface hoar/crust combination around treeline. The surface hoar is down 25-45 cm and seems to be isolated to the north of the region or areas with a relatively deeper snowpack.

There are a variety of crusts buried 10-110 cm below the surface. These crusts have begun to break down. The base of the snowpack generally consists of facets and depth hoar.Â