Observation: Turnagain

Location: Seattle Ridge - Uptrack

Route & General Observations

Snowmachined to the lower reaches of the motorized up-track to take stock of the new snow instability.

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

Despite the very low visibility, we think we saw some fresh debris in a few gullies along the Southeast face of Seattle Ridge. The debris was shallow and only running to where the slope angle begins to lessen. These are most likely wet/damp loose snow avalanches.

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

Rain up to 1,000' and snow above 1,200' - 'snain' in between. Temperatures were ~32 at 1,800, our high point. Wind was light to moderate from the North.

Snow surface

At 1,800' there was ~6" of dense snow over 2" of lighter snow. This sat on a stout crust.


Storm slab and wind slab issues in the new snow:
An upside-down storm has created soft storm slabs. See video. Yesterday's 6-10" of low density snow is now covered with a layer of 6-10" of dense snow. The low density snow has compressed under the dense snow and settled to be only 2-3" thick - but it still is acting like a weak layer.

Up higher where the wind is blowing, slabs are likely forming on this low density snow and may be releasing as this set up can be touchy.

Photos & Video
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