Planned Website Outage: The UAC website will be down for maintenance on June 17 from 2:00 - 7:00 PM MT.
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: Alta Periphery

Observation Date
2/14/2018
Observer Name
Hardesty, Wilson
Region
Salt Lake » Little Cottonwood Canyon » Alta Periphery
Location Name or Route
Alta periphery: Snake Creek and Patsy Marley
Weather
Sky
Overcast
Precipitation
Light Snowfall
Wind Direction
Southwest
Wind Speed
Moderate
Weather Comments
Occasionally strong. A bit of graupel starting at 2pm.
Snow Characteristics
Snow Surface Conditions
Powder
Wind Crust
Melt-Freeze Crust
Snow Characteristics Comments

Yeah Evelyn said it, today wasn't yesterday.

Fairly dense and cakey in wind affected terrain; off aspects crusted.

Red Flags
Red Flags
Wind Loading
Poor Snowpack Structure
Red Flags Comments
ECTP and CTH 10,200' NE Corner Pocket of upper Snake Creek at standard PSlab interface. See below. Chose not to ski intended line.
Comments

HS ran from 90cm to 150cm in starting zone of Corner Pocket. Large, loose, dry depth hoar crystals noted.

Videos of wind loading and of simple ski pole probe test for superficial strong over weak of wind drifting.

Video
Video
Today's Observed Danger Rating
Moderate
Tomorrows Estimated Danger Rating
Moderate