Avalanche: Girdwood

Location: Portage Road Obs and Girdwood obs

Route & General Observations

We drove Portage Road between 2pm and 3pm and witnessed a natural avalanche near Williwaw Campground. Photos below. Visibility was pretty good and could see around some of the valley. There were numerous crowns, blowing snow along ridge tops, and the sun was triggering wet/loose avalanches on Southern aspects.

Avalanche Details
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Trigger NaturalRemote Trigger0
Avalanche Type UnknownAspect North
Elevation 2000ftSlope Angle 45deg
Crown Depth5ftWidth 200ft
Vertical Rununknown  
Avalanche Details

Witnessed a natural avalanche near Williwaw Camp ground on a Northern aspect. Active and rapid wind loading were observed just prior to this event on a similar aspect.

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
Observer Comments

Recent avalanches, wind loading, and sun triggered wet/loose point releases

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

Obscured becoming mostly cloudy with patches of blue sky and sun.
36F in Portage
Winds were blowing snow along ridgetops

Snow surface

1+ feet of standing water along road with slick ice below. Poor driving conditions. 10-12 inches of wet snow in pullouts that were clear of snow yesterday.

Photos & Video
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