Notice: Undefined index: HTTP_REFERER in /home/cnfaic/www/dev/site/wp-content/plugins/wp-cors/wp-cors.php on line 28

Notice: Undefined index: HTTP_ORIGIN in /home/cnfaic/www/dev/site/wp-content/plugins/wp-cors/wp-cors.php on line 29
CNFAIC
CNFAIC LogoCNFAIC Logo

Observations

Region: Turnagain, scottfennell
Location: Eddies
Observer:
Date:

Route & General Observations

Two laps on the WNW bowl of Eddies

Avalanche Details

Avalanche details

Trigger SnowmachinerAvalanche Type Aspect Southeast
Elevation 2200ftSlope AngleunknownCrown Depthunknown
WidthunknownLengthunknown  

Observer Comments

See photos below - machine triggered slab avalanche occurred around noon directly across the valley from Eddies on sunnyside; looked to be ~100' across.

Red Flags

Obvious signs of instability

Recent Avalanches?YesCollapsing (Whumphing)?NoCracking (Shooting cracks)?No

Observer Comments

No collapsing observed, even by the party which set the new skin track to the top today.

Weather

Weather

Mostly sunny, occasional valley fog. Temps in the 20s, light variable wind.

Snow Characteristics

Snow surface

Snow surface was soft along the entire route, even above treeline. 1mm surface hoar formation observed at the top of the route, never on a hard bed surface.

@1100' just out of the trees, 55cm of new snow from the Friday night/Saturday storm, with 100cm now covering the Thanksgiving raincrust. Ski penetration of 25-40cm on the lower mountain, decreasing to a low of 5-10cm above treeline in the wind affected areas at the top of the lower west bowl.

Snowpack

Right side up snowpack along the entire route. Hand tests showed no results at the interface of last week's snow and the Friday/Saturday storm snow below treeline.

Above treeline, some shallow 4-8" wind slabs were covered by several inches of soft snow; these broke cleanly in hand shear tests under moderate pressure, revealing a thick, softer 4 finger layer of facets.

Photos & Video

Photos



USFS SNOW AND AVALANCHE HOTLINE (907) 754-2369
If you have comments or questions regarding CNFAIC operations or winter recreation management, please email staff@chugachavalanche.org
© 2018 Chugach National Forest Avalanche Information Center. All rights reserved.
FCNFAIC
Donate
If you think a public avalanche
center is important then we urge
you to become a member & donate.


PickClickGive