Ad
The National Forest Service Logo
icon-add Observation
Forecasts
Logan Ogden Salt Lake Provo Uintas Skyline Moab Abajos Weather Archives How to read the forecast
Observations & Avalanches
Submit Observation Observations Explorer All Observations Avalanches Fatalities Weather Place Names Map Archives
Education
Avalanche Class List UAC Class List Online Classes Resources and Tutorials Avalanche Awareness Develop Skills
Events
Store
About
Contact Who we are Core Values Staff Board of Directors Past Forecasters Sponsors Annual Reports Sign In
Blog
icon-add Observation
Donate / Join

Observation: Garden City Bowls

Observation Date
12/12/2016
Observer Name
Greg Davis
Region
Logan » Bear Lake » Garden City Canyon » Garden City Bowls
Location Name or Route
Bear River Range: Garden City
Weather
Sky
Clear
Wind Direction
West
Wind Speed
Light
Snow Characteristics
Snow Surface Conditions
Powder
Faceted Loose
Red Flags
Red Flags
Cracking
Collapsing
Red Flags Comments
Widespread collapsing and the loudest "whumpf" I have ever heard. Put the fear of God in me even though I was only on a 27º slope. Small shooting cracks while breaking trail on the ridgeline heading North.
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Same
Problem #1 Comments

Extended column test failed and propagated on basal facets below cohesive(1F) slab.

Snow Profile
Aspect
Northeast
Elevation
8,700'
Slope Angle
27°

Hardness profile and basal facets(≤10cm) where failure occurred and propagated with extended column test(ECTP 13).

Cracking along Garden City ridgeline.

Surface facets are in full effect.

Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable
Coordinates