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Archived

Avalanche Forecast

Jan 29th, 2012–Jan 31st, 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
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: South Coast.

Confidence

Poor - Due to limited field observations

Weather Forecast

Sunday should see cooling temperatures and an end to significant precipitation, although snow could linger into Monday morning. Tuesday & Wednesday the region should be under a westerly zonal flow with short lived disturbances - only a few cm expected. The next system hits the coast Wednesday, but likely not till evening.

Avalanche Summary

There are no new reports from the region. Please send us your observations: [email protected]

Snowpack Summary

I suspect pockets of wind slab behind ridges & ribs at alpine and treeline elevations. I also suspect storm slabs on steeper terrain, unsupported slopes, or convex rolls. Deeper in the snowpack is a layer of facets (sugary snow) which formed during the cold mid-January drought. The combination of newer, warmer, cohesive snow above a thin, weak, rotten snowpack is a bad combination.

Avalanche Problems

Wind Slabs

Wind slabs are likely behind ridges, ribs, and similar and terrain breaks. They could be very large and may require another day or two to stabilize.

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

Elevations: All elevations.

Likelihood: Likely

Expected Size: 2 - 5

Storm Slabs

A weak layer in the snowpack was covered by the recent storm snow. This may take some time before it gains strength. Watch steep slopes, convex rolls, and unsupported slopes.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 2 - 5