Avalanche Forecast

Issued: Feb 16th, 2013 9:01AM

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

ghelgeson, Avalanche Canada

Sea To Sky.

Summary

Confidence

Good

Weather Forecast

Sunday: Freezing Level: 750m, Wind: Mod SW, No significant precip.Monday: Freezing Level: 600m, Wind: Lht. SW, No significant precip.Tuesday: Freezing Level: 500m, Wind: Light N/NW, No significant precip.

Avalanche Summary

There was loose wet avalanche activity to size 1 on steep solar aspects on Friday. The activity occurred in response to high freezing levels and direct sunshine.

Snowpack Summary

Relatively small pockets of stiff wind slab which exist at higher elevations are expected to be mostly unreactive. In shaded areas at treeline and below the new snow may overlie surface hoar which is reported to be reactive in the Meager Group (upper Lillooet). Several crusts can be found in the snowpack, especially on solar aspects; however, reports indicate these interfaces have settled out fairly rapidly in most areas. The mid and lower snowpack layers are generally strong and well settled.Total snow depths vary from around 400 cm in the south to around 180 cm in the north.

Problems

Wind Slabs

You may find the odd small wind slab in isolated terrain in the Alpine. Watch for triggering in gullies and in the lee of ridge crests too.

Plan escape routes and identify safe zones before committing to your line.>Be cautious as you transition into wind affected terrain.>

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Feb 17th, 2013 2:00PM