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Archived

Avalanche Forecast

Jan 12th, 2016–Jan 15th, 2016
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
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
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

Regions: Waterton Lakes.

A weak interface of surface hoar, facets and suncrust formed during the early January drought is likely to become increasingly reactive as new snow  adds to the load that it is currently carrying.

Weather Forecast

A weak warm front making its way inland will bring cloudy skies and warming temperatures through Wednesday.  This warm front will be met by an arctic front sliding down from the north on  Wednesday evening/Thursday morning, uncertainty surrounds the intensity and timing of the resulting snowfall, amounts may vary from 10-20cm.

Snowpack Summary

Moderate-Strong SW winds scouring areas of previous melt-freeze crust, and redistributing up to 7cm of recent new snow into thin windslabs.  These are covering surface hoar, up to 6mm in size, in locations sheltered from NW winds and old surface facets. The middle and lower snowpack are well settled and currently giving no notable shears.

Avalanche Summary

There has been no recent avalanche activity observed or reported.

Confidence

Timing, track, or intensity of incoming weather system is uncertain

Avalanche Problems

Wind Slabs

Be careful with wind loaded pockets.

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

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 2

Storm Slabs

The new snow will require several days to settle and stabilize.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2