Valanga

Avalanche: Diving Board

Kelly PSalt Lake
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Avalanche

Slab Width
30 m
Weak Layer
Ground Interface
Trigger Type
Natural
Vertical Fall
305 m
Avalanche Type
Glide
Slab Thickness
152 cm
Start Zone Aspect
Northeast
Avalanche Problem
Gliding Snow

On Big West in the cover of the trees and I heard what sounded like thunder, it took a moment as the sound continued to realize it was a large slide. A tree was blocking my view of the diving board so I stood up and walked a few yards to see if I could see it. The wind was whipping in Broads above about 8500 ft and visibility was poor at times. light snow with some snow grains. A glide avalanche released about 1/3 of the way up the diving board slab. It ran to about 50 yards from the stream below and produced a substantial cloud that filled the drainage

I dug a snowpit at the top of Moe's in Mill B just below the loading zone. Unfortunately my phone died so no photo. Profile showed a well adheared snow pack with a layer of old near surface facets about 3 ft down. However they had bonded very well and no signs of ball bearing left behind. EC test showed no results.