Avalanche Forecast

Issued: Jan 26th, 2019 4:00PM

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

Marcus Waring, Parks Canada

Waterton Lakes.

Expect sun exposed Wind Slabs to become more reactive with Sundays warm temperatures.

Summary

Weather Forecast

Sunday: 0-2 cm of snow with West wind 50km/h gusting to 80. Freezing level 1300m.Monday: Mostly Sunny. Light to Moderate West Wind. Freezing level valley bottomTuesday: Mostly Sunny. Light to Moderate West Wind. .

Snowpack Summary

30cm of recently wind affected snow sits atop a crust layer below 2000m . The midpack is strong in deep snowpack areas, but the facets lingering at the bottom remain a concern in thinner areas.

Avalanche Summary

No new Avalanche activity observed.

Confidence

Problems

Deep Persistent Slabs

This layer likely requires a large trigger. Be cautious when transitioning from thick to thin snowpack areas

Avoid steep convexities or areas with a thin or variable snowpack.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Unlikely - Possible

Expected Size

2 - 3

Wind Slabs

Westerly winds have formed thin wind slabs over a crust layer.

Use caution in lee areas. Wind loading could create slabs.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Jan 29th, 2019 4:00PM