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Avalanche Forecast

Dec 16th, 2019–Dec 17th, 2019
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: South Rockies.

Triggering an avalanche is most likely in wind affected terrain and steep rocky slopes.

Confidence

Moderate - Uncertainty is due to extremely variable snowpack conditions reported through the region.

Weather Forecast

Monday Night: Cloudy with clear periods and isolated flurries. Alpine temperature -10 C. West wind 25-55 km/hr.

Tuesday: Partly cloudy, partly sunny. Alpine temperature -7 C. West wind 25-40 km/hr.

Wednesday: Mix of sun and cloud. Alpine temperature -8 C. West wind 15-30 km/hr.

Thursday: Cloudy with isolated flurries, trace to 10 cm. Alpine temperature -8. West wind 25-45 km/hr.

Avalanche Summary

Most recent avalanche activity (mid to late last week) was limited to a few wind slab avalanches (size 1-2) triggered with explosives.

Snowpack Summary

Strong winds redistributed 15-20 cm of recent fresh snow and have formed wind slabs on lee features in the alpine around treeline. Weak snow can be found 30-80 cm deep around crust layers that formed in November and October. These persistent weak layers produced large avalanches last weekend but have gained strength since then. Snowpack depths range between 50-150 cm at higher elevations and taper rapidly below treeline.