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Archived

Avalanche Forecast

Mar 11th, 2019–Mar 12th, 2019
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
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 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.

Avalanche Problems

Storm Slabs

Where more than 15 cm of snow accumulates these slabs will likely become reactive, in part because the deeper sugary (faceted) snow below may prove to be the critical weak layer.
Watch for whumpfing, hollow sounds, shooting cracks or recent avalanches.Seek out sheltered areas where the snow is unaffected by wind.Avoid terrain traps where small avalanches can have increased consequences.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2.5