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Archived

Avalanche Forecast

Mar 24th, 2012–Mar 25th, 2012
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
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
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
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

Regions: Glacier.

Strong solar is forecast through the weekend. Avalanche danger will rise through the day on slopes exposed to the sun.

Avalanche Problems

Cornices

In deciding where to go today and while traveling carefully consider your exposure to cornices. Huge cornices exist along ridges. Fluctuating temperatures and strong solar will weaken them. Cornice failures have triggered very large avalanches.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 2 - 3

Deep Persistent Slabs

These layers are down 1.5-2 m, are widespread and have produced climax avalanches. The probability of triggering is low, and it will likely take a large trigger such as a cornice fall, but if triggered the resulting avalanche would be massive.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Unlikely - Possible

Expected Size: 3 - 4

Loose Dry

Periods of strong sun yesterday formed suncrusts on steep solar aspects. Intense solar is forecast today and is expected to trigger loose avalanches, they could turn to wet in the afternoon. Watch for signs such as snowballing and moist snow.

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

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 3