Avalanche Forecast

Issued: Jan 19th, 2018 4:00PM

The alpine rating is moderate, the treeline rating is low, and the below treeline rating is low. Known problems include Wind Slabs and Persistent Slabs.

timothy johnson, Parks Canada

Waterton Lakes.

Stay vigilant if stepping out into large avalanche terrain

Summary

Weather Forecast

Above freezing daytime temperatures with freezing temperatures overnight. Continued moderate to strong westerly winds. No new precipitation expected

Snowpack Summary

Rain and warm temperatures over the last 72hr has quickly settled the snowpack. Snow has fallen up high and has been moved around with moderate to strong winds.

Avalanche Summary

No new observations

Confidence

Due to the number and quality of field observations

Problems

Wind Slabs

Anticipate and be aware of wind-loaded pockets at tree-line and above.

Minimize overhead exposure during periods of heavy loading from new snow, wind.Be cautious as you transition into wind affected terrain.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Persistent Slabs

No large avalanches have been observed on the Dec. 15 facet layer but it continues to be a layer of worry for the forecasters.

Minimize overhead exposure during periods of heavy loading from new snow, wind.Use conservative route selection, choose moderate angled and supported terrain with low consequence.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

1 - 3

Valid until: Jan 22nd, 2018 4:00PM