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Observation: Snowbird periphery

Observation Date
3/31/2017
Observer Name
B
Region
Salt Lake » Little Cottonwood Canyon » Snowbird periphery
Location Name or Route
Snowbird Periphery/Cardiff
Weather
Sky
Obscured
Precipitation
Light Snowfall
Wind Direction
Northeast
Wind Speed
Light
Weather Comments
Forecast for NE winds verified, but the extent and damage was not as severe as anticipated. Minimal damage in the upper elevations. Cloud cover was thick with Obscurred skies for the majority of the day with very few patches of sun from mid elevationto the upper elevations. Temperatures hit 40 degrees at 8000 feet and stayed cooler than over the past few days at higher elevations.
Snow Characteristics
New Snow Depth
5"
New Snow Density
Medium
Snow Surface Conditions
Powder
Wind Crust
Melt-Freeze Crust
Damp
Snow Characteristics Comments

Early morning to noon offered good cold snow powder riding above 9500. As the day progressed the cold snow line continued to rise and by mid afternoon these kind of good riding conditions only existed above 10200. Intermittent periods of patchy sunshine allowed for rapid greenhousing at the mid elevations around 1200 hours. The 5 inches of new snow that fell overnight was much lighter than the snow that fell on Thursday and in areas where the old snow surface was smooth the riding was the best. From noon on the snow got very wet and sticky. Isolated patches of wind scour was observed on E and NE facing terrain features in the upper elevation bowl areas.

Red Flags
Red Flags
Rapid Warming
Red Flags Comments
The only real pronounced Red Flag today was the mid day warming that drastically changed the riding quality.
Avalanche Problem #1
Problem
New Snow
Trend
Increasing Danger
Problem #1 Comments

In the early morning hours Loose Dry Avalanches and sluffing was occurring, but not a big issue. Wet Loose became a factor as the day progressed and the temperatures rose. Both of these were manageable. Wet Loose on Saturday may be a more widespread issue when the sunshine comes out in full force.

Avalanche Problem #2
Problem
Cornice
Problem #2 Comments

The large cornices continue to be something to avoid with the continual loading and sustained warm temperatures. Of note, control work on Friday was able to dislodge significant amounts of these cornice formations.

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