Observation: Salt Lake

Observation Date
3/23/2013
Observer Name
Greg Gagne
Region
Salt Lake
Location Name or Route
Mineral Fork
Weather
Sky
Broken
Precipitation
Light Snowfall
Wind Direction
Northwest
Wind Speed
Light
Weather Comments
Little bit of everything - sun, snow, overcast, some greenhousing at lower elevations. Light winds out of the NW seemed to accompany short bursts of snowfall.
Snow Characteristics
New Snow Depth
6"
New Snow Density
Low
Snow Surface Conditions
Powder
Damp
Snow Characteristics Comments

Snow quality varies with elevation. Upper elevations still hold dry powder on N aspects, but was finding damp snow at lower elevations on all aspects. Probably varies by drainage as well depending upon how much sun was received. 40 cms (16") storm snow since Wednesday.

Snow Profile
Aspect
North
Elevation
9,000'
Slope Angle
36°
Comments

Late afternoon tour into Mineral Fork from BCC. New snow was not sensitive today to stability tests. I was getting moderate to hard shears at the interface with the denser snow from Thursday am. This is about 20 cms (8") down from the snow surface. Expect this to continue to heal. Somewhat larger cornices along rideline that were easy to kick, but they would only produce minor sluffing in the snow surface.

I think we all have a pretty good handle on the storm snow from this past week and unless winds ramp up, issues will largely be related to warming. Unless we see more sun, hazard remains in the "Manageable Moderate" category.

I spent some time looking at the snow on N aspects at mid/upper elevations where I and others (Brett, Kikkert) have noted dry, faceted snow underneath the storm snow. It appears solar aspects underwent their wet snow cycle last weekend, but north aspects are still a late winter snowpack with facets. I was finding .5 mm facets down 45 cms from the snow surface sitting underneath a 1-2 cm melt freeze crust from last weekend. Unimpressive stability test results (CT 22/Q2) but just more evidence North aspects may be reactive once the unfortunate/inevitable warming occurs. (Video clip describing snowpack on upper elevation north aspects.)

Forecaster Comments: Yet another 5 star observation by Greg Gagne

Video

Photo of typical Spring storm day.

Coordinates