Waterton Lakes National Park Avalanche Forecast

Mar 26th, 2020 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 Loose Wet.

Windslab will continue to develop in to the weekend. This is not the time to push the conditions as the healthcare system continues to deal with COVID19.

Summary

Weather Forecast

Friday: Cloudy with isolated flurries. West wind 50km/h gusting to 70.  Freezing level 1600m.

Saturday: Cloudy with wet flurries. Moderate SW wind with strong gusts.

Sunday: Cloudy with wet flurries. Moderate SW wind with strong gusts. 5 cm snow accumulation.

Snowpack Summary

5-10 cm of storm snow has been redistributed by Moderate - Strong SW winds. This has created fresh windslabs which sit over a melt freeze crust on all but North aspects. The mid pack is strong and well settled. Basal instabilities haven't been seen in some time, but are likely lurking in thin areas.

Avalanche Summary

Avalanche activity in the last week has mainly been limited to loose wet avalanches up to size 1 on solar aspects with daytime warming.

Confidence

Problems

Wind Slabs

An icon showing Wind Slabs

Likelihood

Possible

Expected Size

1 - 2

  • Use caution in lee areas. New snowfall mixed with wind loading is creating Wind Slabs.

Aspects:

North, North East, East, South East.

Elevations:

Alpine.

Loose Wet

An icon showing Loose Wet

Likelihood

Possible

Expected Size

1 - 1.5

  • Avoid slopes when the solar radiation is strong, especially if they have large cornices overhead.

Aspects:

East, South East, South, South West, West.

Elevations:

All elevations.

Valid until: Mar 29th, 2020 4:00PM