Observation Date
2/21/2020
Observer Name
Staples
Location Name or Route
Above Bountiful
Comments
The main issue is the upper layers of new snow which is weakening. The same generally structure exists on all shady slopes.
(1) Very low density layer of stellar snowflakes on top.
(2) Dense layer of snow that was likely wet dense snow when it fell
(3) Very low density layer of decomposing stellars
(4) Mixed bag of snow crystals directly on top of the hard ice crust - this layer of snow was the several inches of snow that fell on top of the ice crust prior to last weekends storm.
(5) Very very hard ice crust from freezing rain.
The rest of the snowpack under the Feb 7th crust is now concern.
I examined all these layers of snow with a hand lens in many different locations, mostly on NE aspects between 8000 and 8500 feet. I couldn't find obvious facets. I could find some straight edges and a few sharp corners but mostly found the fragile arms of stellar snowflakes. There were a few faceted edges on some graupel crystals.
What's happening now - Clear cold nights and warm sunny days are keeping the powder loose and unbonded. It isn't necessarily turning into obvious faceted crystals, its' just remaining loose. With a crude dial stem thermometer, I measured a temp gradient of 86 deg C/meter in one location and 250 deg C/meter in another location. (For reference the threshold gradient for faceting is about 10 deg C/meter)
The video at the bottom shows some denser layer of snow and the looser snow crystals that spill onto the shovel.



Video
Today's Observed Danger Rating
Low
Tomorrows Estimated Danger Rating
Low
Coordinates