Waterton Lakes National Park Avalanche Forecast

Mar 16th, 2020 4:00PM

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

The weekends storm snow is settling fast but unfortunately, the snow quality is deteriorating just a quickly. Good skiing can still be found in sheltered areas but that will change as the temperature drops.

Summary

Weather Forecast

Tuesday: Mostly Sunny with increasing clouds in the afternoon. Light west wind. Freezing level 2000m

Wednesday: Cloudy with isolated flurries. Moderate NE wind. Freezing level valley bottom.

Thursday: Mainly cloudy with scattered flurries. Moderate NE wind. Freezing level valley bottom.

Snowpack Summary

A sun crust is developing on the surface. Waterton received 40cm of snow in the townsite & 20cm at Cameron Lake over the weekend. This storm was accompanied by easterly winds so expect reverse loading. The new snow is settling fast thanks to high daytime temperatures. The midpack is strong, though weaker basal facets still lurk in thin areas.

Avalanche Summary

Multiple natural size 1- 1.5 dry loose avalanches observed in steep alpine lee slopes on Sunday.

Confidence

Problems

Wind Slabs

An icon showing Wind Slabs

Likelihood

Likely - Possible

Expected Size

1 - 2

  • Keep an eye out for reverse loading created by an upslope storm.

Aspects:

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

Elevations:

All elevations.

Loose Wet

An icon showing Loose Wet

Likelihood

Likely - Possible

Expected Size

1 - 2

This problem is specific to Tuesday.

  • 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 19th, 2020 4:00PM