Avalanche Forecast

Issued: Apr 15th, 2021 4:00PM

The alpine rating is considerable, the treeline rating is considerable, and the below treeline rating is considerable. Known problems include Loose Wet and Cornices.

jesse milner,

Waterton Lakes.

The potential is there to have a widespread avalanche cycle with the given forecast for this weekend.

Summary

Weather Forecast

The weekend is forecasted for high freeze levels and strong solar input. The last forecasted good freeze is Friday night.

Avalanche Canada's Mountain Weather Forecast is a great regional-scale resource for up-to-date weather information. SPOTWX is a good resource for local scale weather forecasts.

Snowpack Summary

Up to 30cm of recent snow in the alpine with minimal wind effect. This sits on a supportive crust that exists to ridgetop except on high north faces. Overall a well consolidated snowpack. With warming temps we expect the snowpack to become isothermal over the weekend.

Avalanche Summary

We suspect a widespread avalanche cycle on all aspects to mountain top with forecasted freezing levels and solar input over the weekend.

Please consider submitting a MIN report if you see an avalanches.

Confidence

Freezing levels are uncertain on Saturday

Problems

Loose Wet

Forecasted freezing levels coming into the weekend have the potential to produce a widespread loose wet cycle and historically this is when some of the deeper instabilities have been know to make a resurgence.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Possible

Expected Size

1 - 3.5

Cornices

The cornices that have built throughout the season may hit the critical state with the forcasted warming trend.

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood

Possible

Expected Size

1 - 2.5

Valid until: Apr 18th, 2021 4:00PM