Avalanche Forecast

Issued: Apr 6th, 2013 9:45AM

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 - Forecast snowfall amounts are uncertain on Sunday

Weather Forecast

Overnight and Sunday: Moderate precipitation is expected to continue this evening, becoming light convective showers by morning. Temperatures should cool down a few degrees as the precipitation ends.Monday: A ridge of High pressure is expected to start to dry up the region on Monday. There is a chance that a low pressure system that is tracking South of the U.S. border may alter its course and cause enhanced precipitation for the Southeast regions.Tuesday: High pressure is expected to bring mostly clear skies and light winds during the day.

Avalanche Summary

New moist snow point releases are gathering mass and resulting in avalanches up to size 2.0

Snowpack Summary

15-20 cms of moist snow has fallen at higher elevations. New snow is expected to bond well to the old moist or wet surfaces. Some new wind slabs may develop at higher elevations. Surface crusts may have developed before new snow started to fall, providing a sliding layer for the new snow.

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.>Extra caution needed around cornices with current conditions.>

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 4

Valid until: Apr 7th, 2013 2:00PM