Archived

Avalanche Forecast

Apr 13th, 2012–Apr 16th, 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

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

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: Waterton Lakes.

Avalanche danger is changing quickly with springtime weather unpredictability. More precip forecast for Sat afternoon so keep a close eye on freezing level and the actual amount and type of precipitation.

Avalanche Problems

Loose Wet

Although the storm on Thur gave less precip than forecast, freezing level has not been below ridgetop since Wed. With these unpredictable weather forecasts, watch conditions carefully. Avalanche danger will increase with precip, wind or solar heating

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

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Persistent Slabs

Above about 2000m, numerous crust created from daytime heating are lingering in the upper snowpack. Avalanches that start in surface layers could step down to these interfaces, especially at higher elevations.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3