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Recreational Observation

Chiwaukum Traverse

March 16, 2019, 4 p.m. PST

Weather: Warm with high clouds, no wind. Weak overnight freeze.

Snowpack: On north at 6800ft: Found a layer of buried surface hoar (5-8mm) and facets (1.5mm) down 15-25cm. CTE SP in two different spots on a slope. Found this same layer down 20cm on east at 6700ft. Bailed on Chiwaukum Traverse due to this and wet loose concerns. Cornices looking large and ready to go in this area as well. Below 4800ft on South and east the snowpack was full isothermal and “trap door” conditions easy to find, sinking through to the ground.

Area Description: Chatter Creek

Avalanches: Wet loose cycle on Friday observed on E-S-W aspects at all elevations to D2. Some of these gouged into old snow or even on the ground in places. Would suspect this continued today but we were outta there. One recent D1.5 likely on the surface hoar layer on East at 6800ft below Grindstone Mtn by small cornice fall. Appx 20cm x 10m wide. A couple of large (D2) slides likely from last wind event off east facing slopes of Cape Horn. Crowns blown in and hard to see well.

Observation by Matt Primomo

Did you see any avalanches? Yes

Did you trigger any avalanches? No

Was anyone caught in an Avalanche? No