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Archived

Avalanche Forecast

Apr 9th, 2017–Apr 12th, 2017
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
1: Low
The avalanche danger rating below treeline will be low
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
1: Low
The avalanche danger rating below treeline will be low
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
1: Low
The avalanche danger rating below treeline will be low

Regions: Waterton Lakes.

Fast travel and a well settled snowpack make this a good time to go exploring.

Weather Forecast

Monday: Cloudy with sunny periods. Flurries (up to 5cm). Ridge wind mod SW. Alpine Low -7, High -3. Freezing level 1800m.Tuesday: Mixed sun and cloud. Ridge wind light (gusting strong) SW. Alpine Low -8, High -3. Freezing level 1700m.Wednesday: Cloudy. Flurries (up to 6cm), Ridge wind light E. Alpine Low -3, High -0. Freezing level 2100m.

Snowpack Summary

Up to 25mm of precipitation fell over the past weekend (snow above 2200m, rain below). This has formed isolated pockets of stubborn storm slabs in the alpine. The snowpack is shrinking fast at road level, but there is a 2-2.5m snowpack at ridgetop near the divide. Basal facets persist in some locations but have been unreactive since mid-March.

Avalanche Summary

Nearby operations reported a natural cycle of small loose wet avalanches over the weekend.

Confidence

Due to the quality of field observations

Avalanche Problems

Storm Slabs

Watch for isolated pockets of slab in alpine lee and crossloaded areas.
Use caution in lee areas. Wind loading could create slabs.Use safe ski cutting techniques before entering ski run.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Loose Wet

New snow over old crusty surfaces may produce small natural avalanches with daytime warming.
Avoid exposure to terrain traps where the consequences of a small avalanche could be serious.Watch for clues, like sluffing off of cliffs, that the snowpack is warming up.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 1