Avalanche: Turnagain

Location: Sunburst

Route & General Observations

The APU Snow Science II class traveled to the Glide Avalanche on Sunburst to take observations of the slide and continued searching for a reactive layer. The students toured up to around 1900ft where a snow profile was completed. Students also took measurements of the avalanche crown, runout and debris starting around 2100ft. The ski conditions were very good and the snow was not too wind affected.

Avalanche Details
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Trigger NaturalRemote Trigger Unknown
Avalanche Type GlideAspect West
Elevation 2100ftSlope Angle 34deg
Crown Depth5ftWidthunknown
Vertical Rununknown  
Avalanche Details

Obs Time: 11:15am-1:00pm
Avalanche Age: 2 days old
Location: Sunburst W Aspect below Ridge Line
Debris Info: 150cm-260cm depth; F-P density; fridge to book size chunks
Terminus: TR/MR

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

Several glide cracks in Turnagain noted on the drive.

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

Temperatures in the upper teens and low twenties with a light NE wind. S1 precipitation for the majority of the day with brief moments of gusting wind. Snow was seen to be blowing up on the ridgeline in strong gusts.

Snow surface

Great skiing and riding conditions. There was .5mm of stellar snow that landed while completing the pit observations. Just around treeline is where the group started to notice some wind effect.


Sunburst Ridge: @2077ft, 12:45pm, W aspect, 20° slope angle, HS 245cm
Layer of Interest: Thanksgiving Crust found @40cm from ground
Layer of Interest: 32cm from surface; *ECTN40 (unofficial test); only observed rounds no facets

Photos & Video
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