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Avalanche Forecast

Archived

Mar 8th, 2018–Mar 9th, 2018

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

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.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.