Avalanche Forecast

Issued: Mar 17th, 2018 4:14PM

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

Ruari Macfarlane, Parks Canada

Waterton Lakes.

Snow followed by the spring sun is the right recipe for loose wet avalanches late Monday through Tuesday. If Monday brings sun expect moderate hazards at all elevations.

Summary

Weather Forecast

Light NE winds through late Sunday. Turning to a light to moderate westerly flow through the rest of the week with clear skies. Expected snow fall amounts ranging from 5 to 15 cm anticipated to begin late Sunday through Monday.

Snowpack Summary

The forecast region received only a few centimeters on new snow since last Tuesday. Snow has been disappearing fast at lower elevations and south facing aspects, but wind loaded gulleys and north facing slope in the alpine are still holding snow. Colder temperatures have improved snowpack stability.

Avalanche Summary

No recent avalanche activity observed in the forecast region. Uncertain snowfall amounts followed by light to moderate west winds may create isolated wind slabs. Once the sun returns, loose wet avalanches are expected on steep solar aspects.

Confidence

Forecast snowfall amounts are uncertain on Monday

Problems

Loose Wet

Hazard will increase with clearing skies after new snow.

Minimize exposure to steep, sun exposed slopes when the solar radiation is strong.Use extra caution on solar slopes or if the snow is moist or wet.

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

Elevations: All elevations.

Likelihood

Possible - Likely

Expected Size

1 - 1.5

Wind Slabs

Watch for these developing Monday afternoon through Tuesday.

Be careful with wind loaded pockets, especially near ridge crests and roll-overs.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 1.5

Valid until: Mar 20th, 2018 4:00PM