Avalanche

Paradise to Camp Muir

Avalanche.org observerWest Slopes South
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Quick report

Cracking
isolated

Other than wind loading we also observed facets at the surface. Most sections of the skin track and downhill tracks were filling in within 5-10 min throughout most of the day. Our skin tracks in upper mountain were gone by the time we descended, despite only taking a 20 min break at the camp.

Weather

Air Temp
10-20
Wind Loading
intense

The morning started off sunny but clouds rolled and sky was completely cloudy by about 1 pm. Very windy all day with gusts up to 25-30, but surprisingly gusts stopped above 8000 or so. Unfortunately there was still plenty of wind loaded slopes above 8000 from previous days.

Snowpack

As expected, the entire route showed evidence of the winds. There was some wind loaded terrain, scoured surfaces, rime ice/chicken heads, wind lips, cornices, however no signs of instability except for on panorama face. We tested the slope on the skin track up pan face and nofed cracking but it did not propagate. No collapsing/whumpfs on the route.

Avalanche

Size
D1 R1
Type
U
Aspect
SE
Elevation
6800 ft

Small D1 avalanche off skiers right of pan face. Likely failed due to wind loaded slope as it appeared pillowy on our way up. We saw the debris on our ski down so unsure of the trigger.