Tahoe National Forest Sierra Avalanche Center

Pit dug in below treeline avalanche path. We also did 2 Loaded PST tests. 10cm of an artificial slab that was 4f-4f+ hard after 1 hr of sitting. Both tests resulted in a slab fracture failure 30cm into the cut. 2x +10cm PST 30/100 SF @ current surface.

Pit dug in near treeline terrain with a minor amount of old wind loading.

0-19cm layer interrupted by rocks

Pit dug near treeline in an area with decent E wind protection.

Pit dug in near treeline terrain with minor previous wind affect.

Snowpit dug in open but wind protected below treeline area.

Pit dug in previously wind affected, near treeline terrain.