CNFAIC LogoCNFAIC Logo

Observations

Region: Turnagain
Location: Bertha Creek Campground
Observer:
Date:

Route & General Observations

Cornbiscuit parking lot to Bertha Creek Campground area to conduct rescue drills and snowpit tests.

Avalanche Details

Avalanche details

Trigger NaturalAvalanche Type Soft SlabAspect East Southeast
Elevation 2000ftSlope Angle 35degCrown Depthunknown
Width 100ftLength 500ft  

Observer Comments

SS-N-R1-D2-U

Observed a couple small wind slab pockets on motorized side above Bertha Cr. Campground.

Red Flags

Obvious signs of instability

Recent Avalanches?YesCollapsing (Whumphing)?NoCracking (Shooting cracks)?Yes

Observer Comments

2 small avalanches noted above.
Very localized cracking at the storm snow interface (about 55cm deep).

Weather

Weather

Snowing 1cm+/ hr til noon. Clearing skies after noon on the South side of Turnagain Pass. Winds were light at road elevation. Noticed some moderate flagging on Seattle ridge from East winds. 28*F in morning. 32*F at 5pm.

Snow Characteristics

Snow surface

New snow was ~55cm deep. Heavy, moisture-laden new snow made for deep trenching with snowmachines. SUper fun riding, DEEP!

Snowpack

HS= 120cm
HNS= 55cm
CT4,6,8
ECTP4, 8, 16

All column tests were failing about 75cm down on a layer of facets/ buried surface hoar over a thin crust.
Cory did a couple snowmachine slope cut tests with no results.

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