State of the Snowpack for 12/14/2019 - 12/20/2019

Dates of the Week: 
12/14/2019 to 12/20/2019
Avalanche Problems: 
General Snowpack Structure: 
  • Snow surface has become a mix of hard wind slabs, wind buff, and rain crusts exposed by wind scouring in exposed near and above treeline areas. 
  • In more sheltered areas, softer, looser snow (facets) exist near the surface. Aside from one isolated avalanche in a near-treeline area where a perfect combination of conditions allowed a wind slab to form on top of this layer, observations and tests have not shown problems with this layer at this time.
  • Below the softer snow, lies the Dec. 12 rain crust with a well-consolidated snowpack under the crust. 
Weather Events: 
  • Winter storm from 12/13-12/15 with new snow and wind.
  • High pressure with shifting wind directions from 12/16-12/18
  • Unsettled weather with light snow on 12/18
  • High pressure with warming temps 12/18-12/20