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Observations

Region: Girdwood
Location: Portage Road Obs and Girdwood obs
Observer:
Date:

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

Avalanche details

Trigger NaturalAvalanche Type UnknownAspect North
Elevation 2000ftSlope Angle 45degCrown Depth5ft
Width 200ftLengthunknown  

Observer Comments

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

Obvious signs of instability

Recent Avalanches?YesCollapsing (Whumphing)?NoCracking (Shooting cracks)?No

Observer Comments

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

Weather

Weather

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

Snow Characteristics

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

Photos



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