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Avalanche Forecast

Archived

Dec 1st, 2019–Dec 2nd, 2019

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

South Rockies.

The big story in the South Rockies is the wind! Wind speeds could reach over 80km/h in the alpine. Be alert to the possibility of new wind slabs forming in spite of a lack of fresh snow. 

Confidence

Moderate - Confidence is due to a stable weather pattern with little change expected.

Weather Forecast

The notable feature in the weather forecast for the next few days is very high winds at upper elevations. Mountain top winds could reach 80-100 km/h on Monday before tapering on Thursday.

SUNDAY NIGHT - Mainly cloudy with isolated flurries / southwest winds, 40-60 km/h / alpine low temperature near -7

MONDAY - Cloudy with scattered flurries / westerly winds 40-80 km/h / alpine high temperature near -7

TUESDAY - Mainly cloudy with scattered flurries / southwest winds, 40-80 km/h / alpine high temperature near -6

WEDNESDAY - Mainly cloudy with scattered flurries / southwest winds, 40-80 km/h / alpine high temperature near -4

Avalanche Summary

There have been no recent avalanches reported in the region. If you are getting out into the mountains, let us know what you see by posting to the Mountain Information Network!

Snowpack Summary

Snowpack depths are highly variable this early in the season with amounts ranging between 50-100 cm at higher elevations, and tapering rapidly below treeline. A crust has been reported in the middle of the snowpack. Forecast strong winds may create new wind slabs in spite of the lack of recent fresh snow.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.