Avalanche: Turnagain

Location: Seattle Ridge

Route & General Observations

Pro 1 moto test day! Manual wx obs in Center Ridge p lot this morning and Full snowpits on Seattle Ridge in the afternoon sun.

Avalanche Details
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Trigger UnknownRemote Trigger Unknown
Avalanche Type UnknownAspect Unknown
ElevationunknownSlope Angleunknown
Crown DepthunknownWidthunknown
Vertical Rununknown  
Avalanche Details

Lots of avalanche eye candy today in the wake of this natural avalanche cycle. Crowns observed on Sunburst (N), Seattle Ridge gully, Lynx Creek (several), Wolverine, Eddies wall, Zero bowl and probably others as well. All appeared to be relatively shallow and within the storm snow. We did not see anything that looked to step down. All aspects. Elevations were all above ~2,000'.
Cornice failure in Juniors (below the Seattle R. wx station) observed later in the afternoon. Trigger unknown.

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

Natural avalanche cycle.

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

Sweet, sweet sunshine! Low 20's F at 1,000' this morning. Winds were calm. No precip but some fog moving in and out of the Pass before 1000. 32 F on the ridge this afternoon with calm winds.

Snow surface

Dry snow from 1,000' up to 3,000'. Repeat offender was cross loaded and 'wavy' this morning. Surface hoar growth overnight. 2-3mm at 1,000'. .5-1mm at 3,000'.


Four student 'full pits' at 2900' on Seattle ridge. East aspect, 23 degree slope. HS ~270cm

ECTP14, 24

All results were 25-40cm down on a layer of buried surface hoar/ facets (.5-1mm). Note: This appears to be the same layer from my pit yesterday (2022.02.18) as these pits were in the same relative location.

Photos & Video
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