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Observation: Turnagain

Location: Eddies

Date:
Observer:
Route & General Observations

Eddies west bowl, then up to just below the headwall and out via northern bowl

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)?No
Cracking (Shooting cracks)?Yes
Observer Comments

2" wind slabs cracked up to 10' and broke into blocks on steep, wind loaded rollovers, but did not slide

Glide cracks - four clusters of seven total - were seen on Sunnyside, directly across the valley and to the north

Low elevation small crown (~1500') on Southwest aspect of Sharksfin; see photo below, likely from Friday

Debris piles from slides at the end of the week were observed at the bottom of N aspect gullies below Tincan Common, the headwall of Eddies, and on Sunnyside. See photos below; low to moderate debris for the size of each path. Additionally, start zones appeared to have been refilled with snow, particularly on the small Eddies slide. Light was tough looking into Todds bowl, but some potential debris observed.

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

Clear, turning to broken skies and overcast by the end of the day. Temps in the single digits to teens, occasional light variable wind.

Snow surface

At the road (400'): Light dusting of snow over a stout 2" crust over at least 2' of moist melt forms
At 1000': 2" of soft dry snow on a generally supportable melt freeze crust, over moist snow
At 1500': 6-8" of soft snow over a barely detectable crust. At this elevation, the snowpack was dry.
Above 1500' in open areas, surface conditions varied from 4-8" of soft snow, hard exposed windslab, or shallow 2" wind slabs over soft storm snow. The winds had most affected the standard uptrack ridge, and the far southern portion of the western bowl.

Snowpack

Snowpit results from 2000', NW aspect, 25 degree slope. HS=160, in a fairly wind sheltered location. TD=120cm.
See photo below; snowpack is generally right side up from the surface to 105cm down, going from fist -> 1 finger.
CT 25, 29 SC down 105cm on the 12/15 buried surface hoar.
ECTX

Photos & Video
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