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Archived

Avalanche Forecast

Dec 24th, 2018–Dec 25th, 2018
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
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.

Recent fresh snow has likely been redistributed by strong winds, especially at upper elevations. Wind slabs may be reactive to human triggering, especially in lee terrain.

Confidence

Low - Due to the number of field observations

Weather Forecast

MONDAY NIGHT: Cloudy with isolated flurries, up to 5 cm accumulation. Light west west wind. Freezing level 400 m.TUESDAY: Cloudy with isolated flurries, trace accumulation. Moderate south east wind. Freezing level 500 m.WEDNESDAY: Cloudy with scattered flurries, up to 5 cm accumulation. Moderate south wind. Freezing level 600 m.THURSDAY: Cloudy with isolated flurries, trace accumulation. Light to moderate west-south west wind. Freezing level 500 m.

Avalanche Summary

There have been no recent reports of avalanches, however information from this region is limited.Tell us what you see by posting to the Mountain Information Network! (MIN)

Snowpack Summary

60-90 cm of snow has fallen over the past week. Moderate to strong winds have redistributed recent snow and likely formed wind slabs throughout the region. Deeper and more sensitive wind deposits are likely to be found at higher elevations. The storm snow sits on a weak layer of surface hoar (feathery crystals) and facets (sugary snow) that formed during the dry spell in early December. Information is limited in this region about how well the new snow is bonding to this layer. Deeper in the snowpack, there are several crusts including an early season crust with facets near the bottom of the snowpack.

Avalanche Problems

Wind Slabs

60-90 cm of recent new snow has likely been redistributed by strong winds in the region. Wind loaded slopes at higher elevations are the most suspect for human triggering.
Approach steep lee and cross-loaded slopes with caution.Be alert to conditions that change with elevation, aspect, and exposure to wind.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2