Avalanche Forecast

Issued: Apr 7th, 2013 3:00PM

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

triley, Avalanche Canada

Kootenay Boundary.

Summary

Confidence

Fair - Freezing levels are uncertain for the entire period

Weather Forecast

Overnight and Monday: The Low pressure system will continue to spread light precipitation to the Interior Ranges. An upper ridge of High pressure should build into the interior by late morning, bringing gradually drier and clearing conditions.Tuesday: The upper ridge is expected to cause dry conditions with broken skies or scattered cloud.Wednesday: A cold front is forecast to move across the Southern Interior bringing cooler temperatures and moderate precipitation.

Avalanche Summary

Loose moist point releases were reported from Saturday. Expect loose wet snow releases from steep terrain at treeline and below.

Snowpack Summary

20-30 cms of moist new snow is sitting on a moist or rain soaked surface. Some stiff wind slabs may be found at higher elevations.

Problems

Loose Wet

Loose wet snow slides may release naturally from steep terrain at treeline and below. Wet slides in motion may gain a lot of mass as they scour isothermal snowpacks down to the ground.

Watch for wet loose or slab activity with forecast rain and/or warm temperatures.>Avoid travelling on slopes which are becoming wet due to rain, warm temperatures, or sun.>

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 4

Wind Slabs

New wind slabs may develop as cooling temperatures turn rain into snow at higher elevations. Wind transported snow may over load cornices which have become weak from rain and high freezing levels.

Avoid freshly wind loaded features.>Be cautious as you transition into wind affected terrain.>

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 4

Valid until: Apr 8th, 2013 2:00PM