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Observation: 10420

Observation Date
2/20/2016
Observer Name
John Mletschnig
Region
Salt Lake » Big Cottonwood Canyon » 10420
Location Name or Route
10420
Weather
Sky
Few
Wind Direction
Northwest
Wind Speed
Light
Red Flags
Red Flags
Wind Loading
Cracking
Poor Snowpack Structure
Red Flags Comments
Tilt Tests, Compression Tests and ECTs showed resistant planar shears within near surface facets buried below wind loaded, dense new snow layering most of the way up the leeward side of peak 10420 west ridge. ECTP21, CT12 R.P. down 15-25cm. Mixed results on graupel layer down 10-20 cm with one test showing full propagation on that layer, ECTP22 RP. In sheltered areas no signs of instability were observed.
Avalanche Problem #1
Problem
Wind Drifted Snow
Trend
Decreasing Danger
Problem #1 Comments
Dense wind slab sits on top of semi persistent (graupel) and persistent (rounding) near surface facet layer in some locals.
Today's Observed Danger Rating
Moderate
Tomorrows Estimated Danger Rating
Moderate
Coordinates