Observation: Garden City Bowls

Observation Date
12/30/2017
Observer Name
David Rosenberg

Region:

Location Name or Route
Swan Flat/Garden City - North Bowl
Weather
Sky
Overcast
Wind Direction
West
Wind Speed
Moderate
Weather Comments
A few flecks of snow/ice in late afternoon. Maybe this was just wind-blown stuff.
Snow Characteristics
New Snow Depth
3"
New Snow Density
Low
Snow Surface Conditions
Powder
Dense Loose
Faceted Loose
Wind Crust
Melt-Freeze Crust
Snow Characteristics Comments
Extremely variable, from chowder to crust, breakable crust, sugar, sugar that hardened into a mass like brown sugar left out. Ice, bare ground ...
Red Flags
Red Flags
Wind Loading
Poor Snowpack Structure
Snow Profile
Aspect
East
Elevation
8700
Slope Angle
25
Comments
Lots of wind movement and loading on most aspects. Variable snow conditions and depth , e.g. extremes of bare ground (ridge in trees) to 80 cm just below the ridge. ECT failed on 4 taps across the entire 1-meter length on the 4-fist layer at 55 cm (above ground). Mild energy, slumped a little, moved a few inches, but not off the column. Shovel compression test punched through and eventually failed 5-15 taps on the 4F layer at 40 cm. Only had one audible collapse the entire day on the first climb up from the parking lot. Nothing else. Wind slabs where they exist, held a single skier.
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Moderate
Snow Profile Coordinates