Avalanche: Girdwood

Location: Notch Treeline

Route & General Observations

Toured up the cat track path from nordic parking lot. Ascended looker’s right ridge past CPG powder hut and onto tree line. Picked our way down through benched terrain how readily the storm snow wanted to move. Cat track not in yet, many rocks and sticks on the descent.

Avalanche Details
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Trigger SkierRemote Trigger Yes
Avalanche Type Soft SlabAspect North Northwest
Elevation 2100ftSlope Angle 38deg
Crown Depth 9inWidth 15ft
Vertical Run 10ft  
Avalanche Details

Numerous soft slab avalanches triggered in new storm snow throughout the day. This particular one popped from about 100 feet away and seemed to fail within the storm snow layer. Small slide showed possibility of stepping down into the remainder of storm snow.

Red Flags
Red flags are simple visual clues that are a sign of potential avalanche danger. Please record any sign of red flags below.
Obvious signs of instability
Recent Avalanches?No
Collapsing (Whumphing)?No
Cracking (Shooting cracks)?Yes
Observer Comments

Localized shooting cracking throughout the day on all aspects. Leeward aspects had propagating cracks that began to fail within storm snow as day continued.

Weather & Snow Characteristics
Please provide details to help us determine the weather and snowpack during the time this observation took place.

No wind, fairly warm at vehicles. Roughly 30 degrees. Wind picked up around 11 am. Sustained moderate wind out of the east. Plenty strong to transport and carry already deposited snow.

Snow surface

~15 inches low density powder


No formal snow assessments done.

Photos & Video
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