Archived

Avalanche Forecast

Jan 27th, 2013–Jan 28th, 2013

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

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

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

Regions: Glacier.

Weather Forecast

Light amounts of precipitation are forecast today as a northwest flow sets up. On Monday a low pressure system will bring light to moderate amounts into Tuesday.

Snowpack Summary

30cm of settling low density snow in the upper snowpack. Jan 23 layer is down 50 to 60cm over a well settled mid pack.Â Below 1800m surface hoar is buried at the Jan 23 interface. The Nov 6 crust is down around 200cm.

Avalanche Summary

4 natural loose size 2.0 to 2.5 avalanches and 1 naturalÂ slab size 2.5 avalanche were observed within the highway corridor.

Confidence

Intensity of incoming weather systems is uncertain on Monday

Avalanche Problems

Storm Slabs

Recent storm snow is settling into a more cohesive slab. Watch for wind effect on north/northeast aspects. Surface hoar below 1800m was observed in some drainages now buried down 40cm, this may become more reactive with settlement.

Caution in lee and cross-loaded terrain near ridge crests.Be cautious of sluffing in steep terrain.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 2