McKay Creek @ Sonora

Location Name: 
McKay Creek @ Sonora
Region: 
BWRA
Date and time of observation: 
Sun, 04/09/2017 - 13:13
Location Map: 


Red Flags: 
Recent avalanche activity
Recent loading by new snow, wind, or rain
Rapid warming

Observation made by: Public
Snowpit Observations
More detailed information about the snowpack: 

Over the course of this 2 day storm we recieved 50cm (20 inches) of new snow. The flakes fell as Graupel & an irregular mix of snow forms at temperatures around freezing. The new snow lays upon a melt-freeze crust layer which has been the point of failure in stability tests. A hard-moderate force exerted on the snow has shown propigation through the snowpack at this layer buried around 50cm deep, which releases the entire storm/wind slab. Strong winds have somewhat stiffened this slab, giving it that potential energy of an avalanche. Time for the snowpack to settle is still necessary, be patient.

Snowpit or crown profile photo or graph: 
Any other comments about the observation or links to outside pages that have more info on the observation: 

Snowmobilers were seeing good riding conditions & people were out Sunday "pushing their luck" on steep slopes. The afternoon sun became intense & loose wet sluffs, roller balls & point releases were noticed.

Weather Observations
Blowing Snow: 
No
Cloud Cover: 
Clear
Air temperature: 
Above Freezing
Wind Speed: 
Calm
Precipitation: 
None
Air temperature trend: 
Warming
Wind Direction: 
Northwest
Accumulation rate: 
None
More detailed information about the weather: 

Clear & sunny with temperatures rising above freezing.