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Archived

Avalanche Forecast

Dec 26th, 2016–Dec 27th, 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
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

Regions: Glacier.

Isolated storm slabs should keep you on your toes, be vigilant, exercising caution as you investigate each slope independently.

Weather Forecast

Snow will develop later today with light accumulations approaching 5 possibly 10 cm by late this evening. Temps remaining cool with Alpine high of -13 and light-mod SW winds. Another 5-10cm is forecasted for Tuesday with precip tapering off Wednesday with incremental loading.

Snowpack Summary

Last week's storm brought significant amounts of precipitation @ TL. This overlies a weak facetted layer and surface hoar in isolated locations, which we're calling the Dec 18th interface. This will be the layer to monitor as the next pulse of precipitation arrives tonight and tomorrow. The November 13th Cr has been unreactive to stability tests.

Avalanche Summary

Yesterday on Video Pk a skier remote size 2 slab avalanche was observed and several size1 loose dry when the sun came out above the valley fog. No new avalanches observed in the highway corridor.

Confidence

Forecast snowfall amounts are uncertain on Tuesday

Avalanche Problems

Storm Slabs

The recent storm snow has been slow to form a slab in part due to continued cool temperatures. Slab properties are starting to form and this is a concern given the Dec 18th facet/surface hoar weak layer down 50-60cm.
Avoid unsupported slopes.Carefully evaluate terrain features by digging and testing on adjacent, safe slopes.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 2 - 3