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Archived

Avalanche Forecast

Mar 8th, 2018–Mar 9th, 2018
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Northwest Inland.

The best riding is likely to be found on sheltered north and east facing slopes.

Confidence

High -

Weather Forecast

FRIDAY: Mix of sun and cloud / Moderate to strong southwesterly ridgetop winds / Freezing level around 500 m.SATURDAY: Cloudy with isolated flurries / Strong southwesterly ridgetop winds / Freezing level rising to around 1000 m.SUNDAY: Mix of sun and cloud / Light to moderate southerly ridgetop winds / Freezing level rising to around 1300 m.

Avalanche Summary

No new avalanches were reported in this region on Wednesday. However, east of  Ningunsaw Provincial Park, evidence of an old cornice triggered size 3 persistent slab avalanche was reported on an easterly aspect that failed on facets around 100 cm down at 2100 m.

Snowpack Summary

Expect to find sun crusts on steep solar aspects. The old wind slabs created over the weekend are faceting and becoming less reactive to human triggers.A crust/surface hoar layer buried mid-January is now roughly 80-140 cm below the surface, and still has the potential to be triggered from a thin snowpack spot, or with a large trigger like a cornice fall.It is unlikely, but may still be possible to trigger very large avalanches on facets at the bottom of the snowpack in steep, rocky, and shallow snowpack areas or with large triggers.

Avalanche Problems

Wind Slabs

The old wind slabs formed last weekend are becoming less likely to human trigger. Steep, convex, and rocky areas are the most likely spots to trigger these lingering wind slabs.
Avoid steep, rocky, wind effected areas where triggering is more likely.Use ridges or ribs to avoid pockets of wind loaded snow.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely

Expected Size: 1 - 1.5