Avalanche Forecast

Issued: Mar 28th, 2018 4:19PM

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

mbender, Avalanche Canada

South Coast.

Precipitation on Wednesday is forecast to be rain or wet snow at upper elevations. In the short term this will weaken the surface snow.

Summary

Confidence

High -

Weather Forecast

THURSDAY: Periods of snow or rain, accumulation 10-15cm / Light to moderate southwest wind / Alpine temperature 2 / Freezing level 1400 m. FRIDAY: Cloudy with sunny periods and isolated wet flurries or rain showers / Light to moderate west wind / Alpine temperature 1 / Freezing level 1300m SATURDAY: Cloudy with sunny periods / Light to moderate west wind / Alpine temperature 2 / Freezing level 1300m

Avalanche Summary

Ski cutting on the North Shore mountains on Monday morning produced widespread size 1 storm slab releases on all aspects within the recent storm snow.

Snowpack Summary

Last week's snow is settled and is bonding to the old surface up to treeline elevations. Alpine areas around Squamish likely received about 60-100 cm of storm snow and more wind last week. In these areas the storm snow is possibly sitting on a mixture of weak grains including a crust on solar aspects and potentially facets/surface hoar on polar aspects. Below the storm snow the snowpack is generally well settled and strong.

Problems

Storm Slabs

Possible rain and or wet snow on Wednesday falling on recent storm snow from the weekend will weaken the surface snow.

Be cautious as you transition into wind affected terrain.Extra caution needed around cornices with current conditions.Be cautious of sluffing in steep terrain, particularly where the debris flows into terrain traps.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

1 - 2

Valid until: Mar 29th, 2018 2:00PM