Observation: Hatcher Pass

Location: near the Hatcher Pass Road

Route & General Observations

Went for a quick tour to check out the remote triggered avalanche near the road. Still thin coverage with snowpack offering little support. Bring your rock skis/board.

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

Human triggered avalanche reported yesterday. Several Avalanches on the S/SE face of Sky Scraper peak. When approaching crown of yesterday's avalanche, one small collapse and shooting cracks up to 15 feet in length were observed.

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

Broken sky, Light winds form the N, 32ºF. Trace new snow-some graupel and precip particles

Snow surface

Snow surface was low density decomposing snow from yesterdays snow fall.


The snowpack near yesterday's remote triggered avalanche is thin, has poor structure, low strength, and high propagation potential. The weak layer that failed in yesterday's avalanche was 2mm faceted snow that failed near the ground. Besides the obvious red flags(recent avalanches, cracking and collapsing) the Propagation Saw Test and Compression Test provided the most useful information from today's crown profile. The crust that has formed near the ground was present in the pit dug today, it was brittle and was not always easily found on the crown of the avalanche.

NE 2800' 30º
HS 46cm

ECTN7 @ 13cm failing on 2mm facets- vertical block fracture
CT3 SC @ 13cm failing on 2mm facets
PST 12/100end @ 13cm failing on 2mm facets

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.