Avalanche

West Willow

Izzy DavisSilver Valley & Bitterroot Mountains
View on map
Observation photo 1Observation photo 2Observation photo 3Observation photo 4

Quick report

I did not test many steep slopes or step onto wind loaded terrain. Only observed signs of instabilities were small pinwheels starting on solar aspects.

Weather

Air Temp
29
Cloud Cover
few
Wind Loading
light
Rain Elevation
Not observed
Snow Avail For Transport
small smounts

A bluebird day with calm winds and mild temperatures.

Snowpack

I dug a pit on a SE aspect near 6300' and a NE aspect very close by on the same ridge at a similar elevation. The SE aspect had a HS of 148 and received direct sunlight. There was mostly moist snow below the January crusts, and the two separate crusts we have been seeing elsewhere had been smashed together during a warming event. The slab of new snow that started on February 7 amounted to 27cm and fell on a 1F crust. ECTX. CT11RP down 27cm @crust.

My pit looked entirely different on the NE aspect. This slope was sheltered by direct sun and had cold, dry snow. The new snow since 2/7 measured 32cm and was sitting on a layer of preserved surface hoar. The surface hoar was as large as 15mm and failed with 12 taps in my ECT. 

I skied a SE slope down in the evening, and by the time I made my descent, the surface was starting to form a melt freeze crust that made for pretty poor ski quality. Ample sunshine made surface snow on solar aspects moist, but slopes that didn't receive sunlight still had dry snow at the end of the day, even below tree line. 

Avalanche

None observed.