Avalanche: Turnagain

Location: Five Sisters avalanche path in Portage valley / Seattle Ridge near Turnagain pass

Date:
Observer:
Ryan Van Luit Forecaster
Route & General Observations

Observations from the road – both Portage valley and Turnagain pass

Avalanche Details
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Trigger UnknownRemote Trigger Unknown
Avalanche Type UnknownAspect North
ElevationunknownSlope Angleunknown
Crown DepthunknownWidthunknown
Vertical Rununknown  
Avalanche Details

Five Sisters avalanche path had fresh debris which came within ~250 vertical feet of the valley bottom.

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

Above freezing temperatures (~40°F) plus fairly rapid loading from rain event.

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

Portage valley at 12p:
Cloud cover was around 1000' at noon.
40°F and raining
Strong east winds

Turnagain Pass at 1p:
Cloud cover ~4000'
38°F
light north winds

Snow surface

Heavy in both locations

Photos & Video
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Near Turnagain pass looking toward Seattle ridge.  

Five Sisters avalanche path in the Portage valley, north aspect. The summit is at ~3000', photo taken from 150'  

Location


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