Northern San Juan
AvalancheAnn Mellick · Mar 6, 2020 · Northern San Juan
Weather
Sunny and warm with some high thin clouds. SW breeze.
Snowpack
Due west aspect below treeline was surprisingly cold and dry. T-20 was -9c. Snowpack had a thin, but supportive surface crust and was largely 1F slab below, sitting on F facets at the bottom. ECTP 23 and CT 17 on this interface. Southwest aspect was much thinner (HS 87) with a 20 cm surface melt/freeze crust with 4F to F moist facets with perc tubes below ECTP 21. Rotten below crust...
Avalanche
Lots of WL in the Brooklyns that ran yesterday eve. None triggered anything deeper. Larges ran about 2/3 track