Southern San Juan
AvalancheMark Mueller · Jan 18, 2020 · Southern San Juan
Weather
Mostly clear skies and single digit temps this morning. Clouds moved in early in the afternoon and temperatures rose into the 20s at Pass level. 8" of new snow with 0.85" of water content measured this morning at the CAIC Snow Study Plot. Storm total of 13" with 1.6" of water content.
Snowpack
Ski testing produced one significant avalanche on an east aspect near treeline (see separate field report). Widespread collapsing (minor to rumbling) was observed on E-S aspects, mostly on low angle terrrain. No signs of instability on north aspects below treeline.
Avalanche
No obvious significant natural avalanche activity was observed along the highway corridor, in the Weminuche Wilderness and the South San Juan Wilderness. Visibility was unlimited.