Full Profile Snow Pit. 150cm snow down to tops of krumholtz.
Unintentional skier triggered avalanche, time approximate (Saturday afternoon), no one caught or carried. Third skier on slope, a party of 3 traveling one at a time, triggered this relatively small pocket of recently formed wind slab.
Failure . . .
Crowns observed across the right side of the Headwall, with fresh debris at the bottom of the bowl. Clear skies, no precipitation, air temp was in the negatives with wind chill. No precipitation. Strong NW wind actively transporting snow. Loading was . . .
Bushwhacked up Slide #2 for our first run, as we were hiking up we noticed a couple chunks of windslab break away. If you were standing on anything other than ice, the snow was very reactive. We decided to call it about a third of the way up, since . . .
Shooting cracks in the areas of rapidly developing wind slab.
Hand shears failing on isolation with Q1 shear quality (clean shear).
Newest/top layer of wind deposited snow, likely formed early this morning (12/7), was the reactive layer, appearing to . . .
What follows is a description of the snowpack found in Gully #1, starting in the snowpack at the Melt/Freeze crust that was supportable everywhere except in the bushes.
+The MF crust has a layer of decomposing graupel on top of it. This was found at . . .
D1 pile after wind loading event that followed 16” new snow over four days.
CT11 Q1 35 cm down x2
ECTN12 35 cm down x2
Consistent weak layer ~5 cm above late November crust, identified via hand shears on aspects S-W-N at elevations 3000-5500’.
4F-F surface snow, with isolated firmer pockets of 1F-4F above 4500’
R3D3 Avalanche in The Lip of Tuckerman Ravine, also took out Chicken Rock Gully. Maximum depth of crown appears to be 1 meter.