Avalanche: Girdwood

Location: Alyeska

Route & General Observations

A gun mission at Alyeska produced several D3 avalanches on Max’s NE face, Shadows, and Headwall, all Northerly aspects. Debris from Max’s Chute ran to International Corner the debris from the Headwall reached Silvertip. A large soft slab trigged by artillery on Headstone initiated a large wet slab at 1800′. See photos below.

Avalanche Details
If this is an avalanche observation, click yes below and fill in the form as best as you can. If people were involved, please provide details.
Trigger ExplosiveRemote Trigger0
Avalanche Type0Aspect North
Elevation 1800ftSlope Angleunknown
Crown DepthunknownWidthunknown
Vertical Rununknown  
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?Yes
Collapsing (Whumphing)?No
Cracking (Shooting cracks)?No
Weather & Snow Characteristics
Please provide details to help us determine the weather and snowpack during the time this observation took place.

Rain and heavy wet snow reached this elevation several times over the last week.
Over 2.5" of water fell within the 24 hours prior to gun mission
Ridgetop winds 20's mph gusting to 50's mph.
Briefly clear skies during gun mission, but snow and winds obscured visibility during day light hours

Photos & Video
Please upload photos below. Maximum of 5 megabytes per image. Click here for help on resizing images. If you are having trouble uploading please email images separately to staff.