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Archived

Avalanche Forecast

Mar 12th, 2019–Mar 13th, 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
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 snowpack needs to adjust to it's new load. The best, and safest riding will be in wind protected areas.

Confidence

Moderate -

Weather Forecast

TUESDAY NIGHT: Light west wind.. Treeline temperatures around -10 C. Dry.WEDNESDAY: Light to moderate south wind. Mostly cloudy. Dry. Treeline temperatures -5 to -10 C. THURSDAY: Moderate to strong southwest wind. 5 to maybe 10 cm new snow. Treeline temperatures around -10 C. Mix of sun and cloud.FRIDAY:  Light to moderate south wind. Trace to 10 cm new snow. Warming temperatures with treeline approaching zero. Cloudy.

Avalanche Summary

Few observers in the field Monday but reports are consistent with a natural avalanche cycle of storm slabs and wind slab up to size 2.

Snowpack Summary

The region received 15 to 30 cm of storm snow accumulations on Monday. It covered previously scoured surfaces and old hard wind hammered snow, 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 the snowpack was faceting, or sits on facets (sugary snow),In the south of the region, the lower snowpack is generally strong.

Avalanche Problems

Storm Slabs

Where more than 20cm of snow fell, storm slabs are a concern, in part because the deeper sugary (faceted) snow below may prove to be the critical weak layer. Wind is starting to focus concerns toward wind slabs on lee slopes and crossloaded slopes.
Avoid terrain traps where small avalanches can have increased consequences.Seek out sheltered areas where the snow is unaffected by wind.Watch for whumpfing, hollow sounds, shooting cracks or recent avalanches.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2