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Avalanche Forecast

Archived

Mar 11th, 2019–Mar 12th, 2019

Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
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 snowpack needs to adjust to it's new snowload. The best, and safest riding will be in wind protected areas.

Confidence

Moderate -

Weather Forecast

MONDAY NIGHT: Snow ending overnight means storm snow accumulations as high as 30 cm. Winds moderate to strong, from the west.TUESDAY: Mix of sun and cloud. Dry. Treeline temperatures -5 to -10 C. Light to moderate winds from the southwest.WEDNESDAY: Mostly sunny. Dry. Treeline temperatures -5 to -10 C. Light westerly winds.THURSDAY: Cloudy. Trace to 5 cm new snow. Treeline temperatures -7 to -3 C. Light to moderate south wind.

Avalanche Summary

No recent avalanche have been reported from this region. However, I expect recent natural storm and wind slab up to size 2.

Snowpack Summary

15 to 30 cm of storm snow accumulations in past 24 hours. Incoming snow will cover previously scoured surfaces and old hard windslabs, as well as sun crusts on solar aspects, and sugary facets pretty much everywhere.February's cold weather weakened the upper- and mid-snowpack. In some sheltered areas, 20-50 cm of previous snow is either faceting or sits on facets (sugary snow), and even possibly surface hoar (feathery crystals).In the south of the region, the lower snowpack is generally strong.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.