Observation: Hatcher Pass

Location: Summer Road to Hatcher Pass Proper

Route & General Observations

Standard summer road uptrack, back down the same route.

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)?Yes
Observer Comments

Test slope collapsed and cracked. See photo.

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

Obscured, classic Hatcher Pass flat light. Light Snowfall becoming very light. Calm winds throughout the tour, moderate west winds at the pass. 0 degC at the car, -4 degC at the pass.

Snow surface

Smooth, not loaded surface becoming wind deposited at the Pass. At the pass, wind scoured to the ground in some areas and knee deep drifts in others. Surface crystals appeared to be decomposing needles.


HS 40cm
~20cm decomposing new precip crystals, much lighter density
~20cm moist melt forms at the bottom
Ski pen 15-20cm.

Hand pits did not show instability.
Loading a test slope resulted in collapse and cracks, see photo. Test slope in photo ~42deg, SW facing, ~3500'. Similar results just below the pass. No formal stability tests.

Photos & Video
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