Snowpack

Border Ruffian

Travis FeistCentral Sierra Nevada
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Observation photo 1Observation photo 2Observation photo 3Observation photo 4Observation photo 5

Quick report

Warm and cloudy afternoon, with better riding conditions than expected. Before the clouds increased, I could see reflective surfaces up to the summits of nearby peaks, indicating a high rain line.  I saw a large, natural avalanche on an east aspect of The Nipple likely from Jan 13th. So I went to a similar aspect and elevation (pin drop) for a snow profile. The snowpack was deep and strong, except at the bottom where it was weak and produced unstable test results. The Jan 2nd layer was hardly faceted anymore - instead the unstable results were on the facets below Dec 19th. This depth was consistent with the nearby avalanche.

Unstable snowpack tests on the Dec 19th facets

Weather

Air Temp
Warm
Cloud Cover
broken
Wind Loading
previous
Snow Avail For Transport
none

Warm day with increasing cloud cover and light west wind

Snowpack

The recent rain crust was soft instead of frozen, which made for better riding conditions than expected. I dug a profile and found the Jan 2nd layer unreactive, but the Dec 19th facets still produced unstable results.