Lone Tree

Location Name: 
South Side Lone Tree
Region: 
Tamarack Out of Bounds
Date and time of observation: 
Mon, 02/03/2020 - 13:00
Location Map: 
United States
44° 39' 14.8428" N, 116° 10' 21.9684" W
US


Red Flags: 
Whumphing noises, shooting cracks, or collapsing
Recent loading by new snow, wind, or rain

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

I didn't do much digging in the snow, but a few things to note. 

HS 170cm, PenSki 10 cm, PenBoot 34 cm. 3 mm easily breakable (possibly wind) crust on surface of south facing slopes, 10 cm down there was a 1 cm crust (probably melt-freeze) that was supportive to the weight of a skier. Below that snow appeared 4F density down to about 45 cm below snow surface, where another crust was felt with my probe.

I experienced an isolated incident of collapsing on the ridgetop, I presume was the melt-freeze crust about 10 cm below snow surface.

Any other comments about the observation or links to outside pages that have more info on the observation: 

Really good skiing on south-facing slopes. Strong solar + cold air temps + NW winds = creamy southside powder. Slopes on the East through West aspects of compass were wind-affected and/or held a surface crust that glared in the sun (recrystallization ?).  We skied slopes that were low 30 degrees. 

Weather Observations
Blowing Snow: 
Yes
Cloud Cover: 
Clear
Air temperature: 
Below Freezing
Wind Speed: 
Moderate
Precipitation: 
None
Air temperature trend: 
Cooling
Wind Direction: 
Northwest
Accumulation rate: 
None
More detailed information about the weather: 

Nice, sunny, bluebird day. Cold, with a biting NW wind. Snow deposited on south facing slopes, strong solar, but cold temps.

Tair -14C, Tsurf -12C, Light-Moderate NW winds with Moderate gusts