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Archived

Avalanche Forecast

Nov 14th, 2013–Nov 15th, 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
Below Threshold
The avalanche danger rating below treeline will be below threshold
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
Below Threshold
The avalanche danger rating below treeline will be below threshold
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
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Glacier.

The season is young and the snowpack is still shallow. Plenty of rocks, stumps, and alder are visible to abruptly bring your run to a halt. Keep your tips up and the throttle down.

Weather Forecast

Unsettled weather continues to move through the central Columbia Mountains, bringing light snow today and another 5-10cm tomorrow. Winds should be moderate, gusting strong, from the W/SW. Freezing levels will slowly drop to valley bottom by Saturday.

Snowpack Summary

A combination of wind slab and storm slab overlay a surface hoar layer, buried roughly 25-35cm down. Limited field observations did see results on this layer in tests yesterday. Suspect it will be touchy with the addition of 20-25cm of storm snow overnight. Below tree-line, the snowpack is still well below threshold for avalanches.

Avalanche Summary

Sz 2.5 out of Macdonald 10 gully yesterday. Suspect more activity with new storm snow overnight.

Confidence

Due to the number of field observations

Avalanche Problems

Storm Slabs

Moderate to strong SW winds overnight will have created soft slabs in alpine and tree-line lee features.
Dig down to find and test weak layers before committing to a line.Use caution in lee areas in the alpine. Recent wind loading have created wind slabs.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3

Wind Slabs

Be cautious as you transition into wind affected terrain.Early season hazards such as rocks, trees and stumps are still visible.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3