Avalanche Forecast

Issued: Mar 7th, 2015 7:29AM

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

jlammers, Avalanche Canada

Sea To Sky.

Watch out for daytime warming. Increased temperatures and solar radiation may increase the likelihood of avalanche activity.

Summary

Confidence

Good

Weather Forecast

Expect mainly sunny skies for the forecast period. Freezing levels will peak at about 2700m on Sunday, and then drop to about 2000m for Monday and Tuesday. Winds should remain light to moderate from the west.

Avalanche Summary

Isolated size 1 wind slabs have been triggered by skiers as recently as Friday. No other avalanches have been observed. Forecast warming may increase the likelihood of loose wet avalanches and cornice failures.

Snowpack Summary

North and west winds have created isolated wind slabs 5 to 10 cm thick on high elevation lee slopes. On other slopes you may find stubborn old wind slabs and surface facets. Melt-freeze conditions can be found on all solar aspects and at lower elevations. The snowpack is generally strong and well settled. However, large cornices may become weak with daytime warming.

Problems

Wind Slabs

Small wind slabs may remain sensitive to light loads in high elevation lee terrain. Due to the irregular wind pattern, wind slabs may be found in unsuspecting locations.

Use ridges or ribs to avoid pockets of wind loaded snow.>Be cautious as you transition into wind affected terrain.>Give cornices a wide berth when travelling on or below ridges.>

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

1 - 1

Valid until: Mar 8th, 2015 3:00PM