Archived

Avalanche Forecast

Mar 2nd, 2012–Mar 5th, 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

4: High

The avalanche danger rating in the alpine will be high

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

4: High

The avalanche danger rating in the alpine will be high

Treeline

4: High

The avalanche danger rating at treeline will be high

Below Treeline

3: Considerable

The avalanche danger rating below treeline will be considerable

Regions: Waterton Lakes.

Strong Westerly Winds! Precip on Sat and potentially Heavy on Mon. Sunday will bring rising freezing levels to near 1800m Monday. Likelihood of Natural Activity will increase. Consider fragile cornices, watch the warming and rapid loading.

Avalanche Problems

Wind Slabs

Soft slabs are present on the lee sides of wind exposed features. With 60cm of recent storm snow available for transport and more snow to come, these slabs will continue to develop with Strong Westerly winds. Watch precip and warming trends.

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

Elevations: Alpine, Treeline.

Likelihood: Likely - Very Likely

Expected Size: 1 - 2

Persistent Slabs

Suncrusts and isolated pockets of surface hoar now down 50 to 80cm. With continued loading and forecast rise in freezing levels these slabs may become more active.

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

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 3