Avalanche

Avalanche: Salt Lake

Bill NalliSalt Lake
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Observation photo 1

Quick report

Slope Angle
39°

Avalanche

Slab Width
6 m
Weak Layer
Density Change
Trigger Type
Skier
Vertical Fall
30 m
Avalanche Type
Hard Slab
Slab Thickness
13 cm
Trigger Detail
Intentionally Triggered
Start Zone Aspect
East
Avalanche Problem
Wind Slab
Start Zone Elevation
3170 m

Travel was up Toledo Bowl to Flagstaff Peak and along Reed and Benson Ridge into Upper Days Fork. Wind damage from recent East wind was apparent the entire way. The snow surface is a mixed bag with everything from a hard supportable 12cm wind slab to a 6cm breakable wind slab to 1cm wind skin to low density settled powder. The areas of greatest concern are where the unusual east wind has loaded normally benign areas with a stubborn but breakable hard slab. With the new snow now covering this booby trap I suspect this combination to cause trouble.

The photo below is of one of these pockets of hard slab near a ridge that didnt fail until I jumped on it from the middle of the slab. It was very small and unconsequential but with more load, or if I wasn't expecting it, could easily have taken me for a ride.

Another small hardslab collapsed near rocky outcrop

Once considered safe south aspects now also have this booby trap hard slab from the east wind. Now covered from this latest 10" storm, all terrain should be approached with caution.