Avalanche

Benzene Alley

Gareth BrownMaritime
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Observation photo 1

Quick report

Cracking
widespread

Just shy of two feet of new snow was observed in the last 24 hours.  Instability within the storm snow was very apparent down 4-6 inches.  Shooting cracks were widespread with shallow remote triggers happening on slopes steeper than 35°.  Natural D1 dry loose avalanches were actively occurring on slopes steeper than 35°.  New snow was extremely low density and still  uncohesive wich made it difficult to judge how well new snow was bonding with wind damaged surfaces below.  

Small shooting cracks were observed on slopes less than 30°. Long shooting cracks with remote failures observed on terrain features steeper than 30° all of these occurring within the storm snow, not at the interface.

Weather

Air Temp
15
Cloud Cover
overcast
Wind Loading
none
Recent Snowfall
55
Snow Avail For Transport
large amounts

Heavy snowfall ~2"/ hour

Snowpack

Found 22 inches of new snow atop pencil to  knife hard wind board.  Very sensitive instability was observed within the storm snow 4-6 inches below the surface.  

Avalanche

Natural D1 dry loose avalanches were actively failing on slopes steeper than 35°.