Northern San Juan

Avalanche

Robert Suminsby · Dec 7, 2022 · Northern San Juan

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Weather

OVC sky, Winds light & variable, Snowfall S1

Snowpack

Loc: Bottom of "Oh Boy", east side of RMP Aspect: NNE El: 11320" Slope Angle: 30 degrees Time: 20221206, 1205L HS: 78cm ~10 cm of new PP on surface, F hardness Upper snowpack (48-68cm above ground) varied from 4F to 1F hardness. Lower snowpack F hardness (ie, pure San Juan sugar) PST failed at 10/100cm, on a weak layer approx 45cm above ground. Q1 shear (see photo).

Avalanche

SS-N-R2-D1-O, on a N-facing slope of ~35 deg, in one of the gullies off the "Putney" line, ~11,500'