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Archived

Avalanche Forecast

Jan 8th, 2016–Jan 11th, 2016
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
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Waterton Lakes.

The new snow is unlikely to bond well to previous surfaces, watch for touchy windslab development as the winds increase into the weekend.

Weather Forecast

A ridge of high pressure building over our area will give mainly stable conditions through the weekend. Traces of new snow are forecast for Saturday night. Temperatures are remaining seasonably cool (as low as -18 overnight and daytime highs around -5). Winds are forecast to be moderate to strong from the West on both Saturday and Sunday.

Snowpack Summary

Up to 5cm of new snow is not likely to bond well to previous surfaces; a thin weak suncrust on solar aspects, old unreactive windslab in exposed areas, surface hoar up to 5mm in size in sheltered locations and surfaces facets in shaded areas below treeline. A surface hoar layer down 40-60cm is most prevalent at treeline and continues to strengthen.

Avalanche Summary

There has been no recent avalanche activity observed or reported.

Confidence

Avalanche Problems

Wind Slabs

Be careful with wind loaded pockets, especially near ridge crests and roll-overs.Avoid freshly wind loaded features.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2

Persistent Slabs

This layer has become difficult to trigger but has the potential to propagate widely.
If triggered the wind slabs may step down to deeper layers resulting in large avalanches.Carefully evaluate big terrain features by digging and testing on adjacent, safe slopes.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely

Expected Size: 1 - 3