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Archived

Avalanche Forecast

Mar 14th, 2021–Mar 15th, 2021
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
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Glacier.

Temperatures stayed warm overnight, giving minimal surface crust recovery. Solar slopes will destabilize quickly with input from the sun.

Weather Forecast

The high pressure breaks down today as a weak cold front moves in from the West.

Sunday: Sunny, increasing cloud in the afternoon. Alpine High -1 C.  Light S wind. Freezing level (Fzl) 1900m.

Sunday night: Flurries (3-5cm). Low -6 C.

Monday: Mostly cloudy. High -3 C. Light W wind. Fzl 1500m.

Tuesday: Mix of sun and cloud. Low -9 C, High -5 C. Fzl 1400m

Snowpack Summary

The surface snow has been moistened (and is now refrozen) on all aspects below 2000m and has been through several melt freeze cycles on solar aspects. Settled dry snow can still be found on high north aspects. The mid and lower snowpack is generally settled and strong.

Avalanche Summary

On Saturday, several loose wet avalanches, up to size 2.5, were observed by field teams and in the highway corridor. A large, size 2.0, cornice fall was also observed on the North side of Mt. Bonney.

Fresh cornice activity was reported off of the North side of Cheops Friday afternoon.

Confidence

Avalanche Problems

Loose Wet

Watch for signs of instability like snowballing and water running on rock faces, these are indications it is time to avoid solar slopes.

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

Elevations: All elevations.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2

Cornices

Cornices are large and have been failing during the heat of the day recently.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2.5