Manto nevoso

Mt Hood: Green Apple Creek/ Vista Ridge

Joe DellaportaMt Hood
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Quick report

Cracking
specific

Increasing wind speeds drifted new snow accumulations into reactive slabs, ranging from soft to stiffer, in exposed terrain. These instabilities were shallow in the area I traveled. A couple of layers, approximately 12-15 inches below the surface, consistently failed in snowpack tests but did not fully propagate with longer columns. Low-density accumulations have significantly improved riding conditions. 

Instability was confined to wind loaded terrain.

Weather

Air Temp
20s
Cloud Cover
broken
Wind Loading
moderate
Rain Elevation
1600 ft
Recent Snowfall
15 cm
Snow Avail For Transport
large amounts

Snowpack

I couldn't find buried surface hoar, but I did locate a layer of preserved stellars just above the 2/13 interface that consistently failed in snowpack tests (roughly 25 cm below surface), but didn't quite propagate through the full length of longer columns. The stout 2/7 crust is easily identifiable and sits about 2 ft below the surface. The snow directly above this crust was slightly weaker, but really not that concerning on the slopes I traveled below 6000 ft. Above this interface is the 2/13, which is in the form of a thin crust around this elevation. There is a new heat crust from yesterdays warming that was buried today (2/16).