Observation: Turnagain

Location: Tincan Trees

Route & General Observations

We wallowed up to 2100′ in the Tincan trees to take a look at the aftermath of last night’s storm. There was about 18″ new snow on the ground out of the parking lot, and 2′ new snow in our stability pit. We didn’t get any alarming results in the pit, and we never really got on any slopes steep enough to test, but we did see widespread activity across the highway on Seattle Ridge.

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

At least 10 recent avalanches on the front side of Seattle Ridge (see photos for a few of them). It was really hard to make anything out until the sun popped out around 1:00.

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

Moderate winds with variable direction. Strong winds with lots of transport along ridgetops, and it was notable that the wind was blowing all the way down in the meadow just out of the parking lot. Mostly cloudy skies in the morning, breaking up to partly cloudy by around 1:00. Temperatures were getting noticeably colder while we were out.

Snow surface

Around 18" new snow out of the parking lot, closer to 2' by around 2100'. Surfaces were all soft where we were traveling, but some of the higher elevation slopes in the area had obviously gotten hit hard by the wind.


We did not get any propagating results around the Thanksgiving crust (ECTN16 x2) or at the new/old interface (ECTN12 x2). But based on the widespread activity across the highway, with active wind loading off the ridgelines, it seemed like avalanche conditions are still dangerous. It was hard to tell weather the avalanches across the road had failed at the new/old interface, or if they were breaking down around the Thanksgiving crust.

Photos & Video
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