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Avalanche Forecast

Dec 8th, 2018–Dec 9th, 2018
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
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
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
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

Regions: Northwest Inland.

Finally some snow in the forecast! Watch for wind slabs forming near ridge crests, roll-overs, and in steep terrain.

Confidence

Low - Due to the number of field observations

Weather Forecast

SATURDAY NIGHT: Cloudy, moderate wind out of the south, alpine temperatures drop to -8 C.SUNDAY: Light snowfall with 5-10 cm accumulations, strong wind out of the south, freezing level climbing to 700 m with alpine high temperatures around -4 C.MONDAY: Light flurries with trace accumulations, strong wind out of the southwest, alpine high temperatures around -5 C.TUESDAY: 10-20 cm of snow, strong to extreme wind out of the southwest, freezing level climbing to 1000 m.

Avalanche Summary

No recent avalanches have been reported. However, we currently have very limited observations. If you have been out, please submit any observations to the Mountain Information Network (MIN).

Snowpack Summary

New snow will gradually accumulate as a series of storms bring snow to the region this week. The combination of new snow and strong winds out of the south will form thicker wind deposits at higher elevations. The new snow will likely bond poorly to the feathery surface hoar crystals and soft sugary snow that have been sitting on the surface for the past week (see this MIN report).A hard crust has been reported 10-20 cm below the surface, and in some locations there is an early season crust with facets near the bottom of the snowpack.Expect an average snow depth of 60-120 cm in the alpine. This decreases dramatically with elevation where the primary hazards are rocks, stumps, and open creeks.

Avalanche Problems

Wind Slabs

Expect new wind slabs to develop with the incoming snow and wind.
Be alert to conditions that change with elevation, aspect and exposure to wind.Back off if you encounter whumpfing, hollow sounds, or shooting cracks.

Aspects: North, North East, East, West, North West.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5