Avalanche Forecast

Issued: Mar 10th, 2018 3:09PM

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

jsmith, Avalanche Canada

Northwest Coastal.

Wind slabs are becoming less likely to human trigger. Steep, convex, and rocky areas are the most likely spots to trigger these lingering wind slabs.

Summary

Confidence

High -

Weather Forecast

SUNDAY: Mostly cloudy with sunny periods / Light to moderate southeasterly ridgetop winds / Freezing level rising to around 1500 m.MONDAY: Mix of sun and cloud / Light southeasterly ridgetop winds / Freezing level rising to around 1800 m.TUESDAY: Mix of sun and cloud / Light southeasterly ridgetop winds / Freezing level rising to around 2000 m.

Avalanche Summary

No new avalanches were reported in this region on Friday.

Snowpack Summary

Up to 20 cm of new snow covers sun crust on solar aspects and surface hoar averaging 5 mm, but found up to 20 mm, on sheltered, shady aspects extending into the alpine in some areas. A layer of small surface hoar (5 mm) buried in late February has been reported in isolated locations at treeline and below.In the upper/mid-pack you will likely find layers of crusts, facets, and isolated surface hoar buried 50-100 cm below the surface. Deeper in the snowpack, around 150-200 cm down there is a crust/surface hoar layer from January. Sugary facets near the bottom of the snowpack would likely be found in colder and dryer parts of the region, such as the far north.

Problems

Wind Slabs

Wind slabs are becoming less likely to human trigger. Steep, convex, and rocky areas are the most likely spots to trigger these lingering wind slabs.

Use ridges or ribs to avoid pockets of wind loaded snow.Avoid steep, rocky, wind effected areas where triggering is more likely.Use caution when transitioning into wind affected terrain.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 1.5

Valid until: Mar 11th, 2018 3:00PM