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Avalanche Forecast

Dec 15th, 2016–Dec 16th, 2016
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
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: South Rockies.

Isolated wind slabs may exist below ridgetops. Use caution when transitioning into wind affected terrain.

Confidence

Moderate - Wind speed and direction is uncertain

Weather Forecast

Friday: Mix of sun and cloud / Light northeasterly winds / Average temperature at treeline -20 C.Saturday: Mostly sunny / Light to moderate northwesterly winds / Average temperature at treeline -20 C.Sunday: Mostly sunny / Light to moderate westerly winds / Average temperature at treeline -15 C.

Avalanche Summary

On Wednesday, no new avalanches were reported in this region.

Snowpack Summary

Wind slabs may exist in isolated lee features below ridgetops but are not expected to be widespread due to relatively light wind speeds thus far. The cold temperatures have promoted surface faceting, which probably means the top layer of snow is soft in sheltered areas. Treeline snow depths around Elkford are only around 60 cm. In shallow areas, the snowpack is most likely facetted (sugary) throughout, and any crusts have probably broken down already. In deeper areas, you can likely find the mid-November crust buried down around 50 cm. Below treeline, early season hazards such as stumps, rocks, and open creeks are still a major concern.

Avalanche Problems

Wind Slabs

Recently formed wind slabs may be reactive to triggering in immediately leeward terrain features. Ongoing outflow winds will continue to build these slabs. Watch for signs of recent wind transport and avoid areas where the surface snow feels stiff.
Be cautious as you transition into wind affected terrain.Use ridges or ribs to avoid pockets of wind loaded snow.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2