Archived

Avalanche Forecast

Mar 9th, 2013–Mar 10th, 2013

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

1: Low

The avalanche danger rating below treeline will be low

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

1: Low

The avalanche danger rating below treeline will be low

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

Regions: Banff Yoho Kootenay.

Touchy slabs still overlie a mainly weak, faceted base east of the Divide.

Weather Forecast

The clouds move in tomorrow with very light flurries developing over southern areas of the region (south of Hwy 1). Winds will pick up in the moderate range from the west and temp's remain cool.

Snowpack Summary

The storm snow from last weekend seems to be bonding reasonably well to the underlying snow surfaces. However, in areas of thinner snowpack (east of the Divide) and on steeper, southern aspects, the storm slab remains touchy. Human triggering to size 3 is possible, if you hit the weak spot.

Avalanche Summary

Small loose, wet slides were observed from steep solar aspects this afternoon. Whumphing / settling was also observed along ridge features in shallow snowpack areas east of the Divide.

Confidence

Timing, track, or intensity of incoming weather system is uncertain

Avalanche Problems

Storm Slabs

The storm slab seems to be bonding to older surfaces. West of the Divide, the storm slab is stubborn and harder to move, however slabs are still touchy east of the Divide where they overlie a weak, shallow, faceted snowpack.

Avoid shallow snowpack areas where triggering is more likely.Make observations and assess conditions continually as you travel.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3