Commonwealth: Summer trail to SW Ridge to West Face Red Mountain
Jan. 7, 2019, 3 p.m. PST
Weather: Overcast skies, good visibility across the valley, increasing precip in the afternoon, moderate to strong winds. Active wind loading on Red Mountains South Face.
Snowpack: BTL: 15cm HST on 4F + moist crust (1/3). NTL: 25cm on 1/3 crust ATL: 25cm on crust with wind scoured areas of frozen crust K to Ice.
Area Description: Commonwealth: Summer trail to SW Ridge to West Face Red Mountain
Avalanches: West facing 40 degree slope at 5,600’. SS-AS-D2 4F hard Wind Slab. Bed Surface: 1/3 crust 1/6 snow interface. 35cm x 30m x 200m. Start zone was a subtle roll where the slope tipped over the 35 degree mark. This slide ran nearly full path to the treed run out on a bench at 4,900’. Each of the 3 parties on Red all triggered wind slabs of varying sizes with the one described being the largest. Of note one avalanche carried through a steep gulley over tree covered cliffs from 4,900’ to 4,300’ directly onto an established skin track that other parties have been using for several days prior.
Observation by Jere Burrell
Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an Avalanche? No