Perley Rock

Glacier National Park

mcramb , Friday 17th December, 2021 8:10PM

We skinned up towards Perley Rock from the Asulkan Valley Parking. It was cold! At 2100m HS 205cm, Dec1 crust down 60cm, approx 10cm thick, -17degC at 12:05pm. At TL large Surface Hoar crystals, up to 2cm, lying flat on top of PPsd. We observed: Multiple Na Sz 1 Loose Dry on steep unsupported slopes on all aspects. One Na Sz1 Wind Slab on West aspect on crossloaded steep unskiable terrain around 2700m. We set off one and observed multiple Sa Sz1 Loose Dry on steep convex West & WNW facing (see photos).

Snow conditions were: Crusty, Powder, Wind affected. Weather conditions were: Cloudy, Cold, Sunny. We rode: Alpine slopes, Convex slopes, Mellow slopes, Open trees, Steep slopes, Sunny slopes. Riding quality was good.

Avalache Conditions: Whumpfing or drum-like sounds or shooting cracks.

Weather

Broken skies in AM clearing in PM. At 2100m -17degC at 12:05pm. Winds Light SW at Ridgetop at 13:15

Avalanche

Sa Loose Dry Sz 1 on steep convex unsupported WNW facing feature at 2100m (see photo)