Snowpack Summary for 3/17/2017

Recent Activity: 

The last few days have been typified by warmer stormy weather. We've had our most avalanche activity during the days when temperatures have been well above freezing and often rainy. This has resulted in Loose Wet Avalanches and Cornice Failures. Thursday was the exception with a few inches of snow and winds resulting in shallow Wind slabs like Aaron saw on Tumalo as well as cornice growth.

Issue Date/Time: 
Current Conditions: 

The upper snow pack has been effected by the warm temperatures and rain which means it's a mix of melt forms and melt-freeze crusts. Below that the snow is rounding. Observers haven't been finding any significant buried weak layers in the snow pack, which means that all avalanche activity is directly related to the immediate weather at hand. If it's warm or raining and the surface snow is melting more than a few inches deep, there is probably a chance for Loose wet avalanches. If we pick up a few inches of new snow look for signs of shallow Wind Slabs like blown-in snow, variations in new snow depth, and cracking on lee aspects. I expect any Wind Slab problem to be shallow.