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Observation: Logan

Observation Date
12/27/2017
Observer Name
Pagnucco
Region
Logan
Location Name or Route
Tony Grove Lake/ Mt Magog shoulder
Weather
Sky
Overcast
Wind Direction
West
Wind Speed
Moderate
Weather Comments
Flat light day. Moderate winds otherwise not much going on.
Snow Characteristics
New Snow Depth
2'
Snow Surface Conditions
Dense Loose
Snow Characteristics Comments

Winds have done some damage to the surface snow. About 1/2" of graupel on the surface made for fast traveling conditions on skis. Sledding conditions were good as well though not a good day to get stuck as once you jump off the snow is bottomless and loose. Supportable enough but still relatively thin with large rocks lurking underneath surface.

Red Flags
Red Flags
Recent Avalanches
Wind Loading
Collapsing
Poor Snowpack Structure
Red Flags Comments
Walked a while through large untouched meadows to try to trigger a collapse. No luck until I popped my ski on after digging a pit and slammed my heel down. BANG! Loud and clear on a N facing 8500' low angle slope.
Avalanche Problem #1
Problem
Persistent Weak Layer
Problem #1 Comments

The buried persistent weak layer is still reactive. Great indication that the snowpack is still unstable and steep slopes should be avoided.

Comments

Quick ECT showed propagation at 25 taps.

Video
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable