Observation: Hatcher Pass

Location: Sunnyside of Hatch Peak

Route & General Observations

We toured from the Fishhook Lot up Hatch Peak along the ridge and descended Sunnyside of Hatch. The skiing and riding quality was great and the snowpack was stable. We did not observe cracking or whumphing. We did see remnants of human triggered loose dry sluffs in steep and confining terrain from the past few days.

Avalanche Details
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Avalanche Details

Loose Dry avalanche that was skier triggered, small relative to slope and relatively harmless to people. L-AS-R1-D1

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

We observed small human triggered sluffs.
Increasing winds from the north was blowing snow from ridgelines and depositing it on leeward aspects starting around 2pm.

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

Mostly clear skies with 20F degrees. The winds were calm in the morning then began to increase out of the north around 2pm. Blowing snow was observed along peaks and ridgelines in the afternoon.

Snow surface

The ~10 inches of storm snow from 1/14 was settling nicely and seems well bonded to most soft surfaces. Loose dry avalanches had occurred in steep terrain and was the primary concern today. Near peaks and ridgelines scoured surfaces were firm and snow was actively being transported by 2pm.


Surface loose dry avalanches of small stature were evident on terrain steeper than 40 degrees. Much of the subsurface snowpack remains quite stable and is continuing to facet with the current cold and dry weather. Shallow snowpack areas harbor a weak snowpack with loose sugary snow that you can easily penetrate to the ground. As the winds were increasing, slabs 1-2" thick were developing on leeward aspects in the upper elevation.

Photos & Video
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