Observation: Chugach State Park

Location: Arctic Valley

Route & General Observations

Returning to parking lot at AV, near tube park when I felt a whumph and saw a crack open above me. Stopped to do an extended column test.

Snow was variable and wind affected, not great skiing.

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?No
Collapsing (Whumphing)?Yes
Cracking (Shooting cracks)?No
Weather & Snow Characteristics
Please provide details to help us determine the weather and snowpack during the time this observation took place.

New snow, signs of wind transport. Winds calm during tour. 28F.

Snow surface

Variable. Settled powder, wind crust, exposed melt-freeze crust.


ECTP-0 @4cm on boundary between wind slab and new snow from this week’s storms
ECTP-5 @20cm on boundary between 1” crust layer and unconsolidated facets.

SE facing 20-degree slope, ~2700’.

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.