Avalanche: Summit

Location: Lowe Raven Ridge

Route & General Observations

Parked in the public parking near the cabins on the North side of the lower summit lake, skinned up the drainage between Butch and Raven, and dug pit mid way up Raven Ridge at 1770ft. Skied down from pit location.

On the drive home we noticed many glide cracks on many faces all along Turnagain Pass.

Contact, Location & General Observations
Enter your contact information and a location for this observation. Note that you can submit anonymously, however if you would like to share your name with staff, but not the public, select No for "May we include your name in your observation"
Forecaster Comments

The glide release on Pete's South occurred sometime between Saturday Feb 7th and Sunday Feb 8th.

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 NaturalRemote Trigger0
Avalanche Type UnknownAspect South
ElevationunknownSlope Angleunknown
Crown DepthunknownWidthunknown
Vertical Rununknown  
Avalanche Details

Glide release seen from road on Pete's South south face.

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

Glide cracks seen from road in Turnagain area. No glide cracks seen in Summit region.

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

Overcast, very light snow, very light wind.

Snow surface

New snow on a crust at mid elevation.

Warm snowball snow at lower elevations.


At mid elevation snow pit showed many melt-freeze crusts and rain crusts. Current surface is new snow on top of a crust.

In lower to mid elevations ski pole penetration showed a soft sugary layer under the thicker wet snow on top.

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.