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Archived

Avalanche Forecast

Nov 19th, 2015–Nov 22nd, 2015
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
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
1: Low
The avalanche danger rating at treeline will be low
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
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Waterton Lakes.

Weather Forecast

Cooler temperatures are forecast through the weekend, with freezing levels remaining at valley bottom and alpine lows down to -20.  Little in the way of precipitation is forecast until the middle of next week.  Winds are expected to be light to moderate from the SW, swinging briefly N Friday morning.

Snowpack Summary

An early season shallow snowpack has accumulated over the course of several brief but intense storms. Wind speeds of over 100km/h had been observed prior to and at the onset of the most recent snowfall, as a result snowpack distribution is highly variable.

Avalanche Summary

Several size 1-1.5 slab avalanches have been observed in the past 48hrs from wind loaded alpine start zones near ridge top.

Confidence

Due to the number of field observations

Avalanche Problems

Wind Slabs

Use caution in lee areas. Recent wind loading have created wind slabs.Early season hazards such as rocks, trees and stumps are still visible.

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood: Possible - Likely

Expected Size: 1 - 2