Observation Date
4/8/2015
Observer Name
mark white
Region
Salt Lake » Big Cottonwood Canyon » Cardiff Fork
Location Name or Route
Cardiff Fork
Weather
Sky
Overcast
Precipitation
Moderate Snowfall
Wind Direction
Southwest
Wind Speed
Light
Weather Comments
Typical spring storm, dumping giant flakes one minute, sun busting through the clouds and greenhousing the next minute. Wind moving snow on the high ridge line but not much down in the drainage.
Snow Characteristics
New Snow Depth
5"
New Snow Density
Low
Snow Surface Conditions
Powder
Melt-Freeze Crust
Snow Characteristics Comments

About five inches of new light density snow on the north end of the compass. less on the south end because of mid-day sun breaking through and shrinking the snow on the south side in a matter of minutes. Unlike the last little storm that I was around for the old surface was frozen pretty solid before any snow started falling.

Comments

Headed up from the Alta Guard station at about 11:30am there was around 3 inches of new on top of a frozen bed surface, while walking up to Cardiff Pass the sun poked through the clouds and the greenhousing was fairly intense for a short period of time dampening the light density snow on the South facing. Once I reached the peak and headed into Cardiff via the Keyhole the skies had socked back in and it was snowing moderately. Seemed pretty apparent right off the bat that the new light density snow was not bonding very well to the old frozen surface on the steeper slopes, a few ski cuts in the top of the keyhole cleaned the whole run out to the old hard bed surface. The sluffs were starting in the new snow and gouging down to the old frozen surface once they got moving, they were also packing a bit of a punch and spreading out quite wide. Did not note any wind affect or slabbyness just a poor bond between the old and the new snow, my thinking is that since the old surface was already frozen before the storm and the new snow came in cold and dry it was basically not sticking to the old surface. Skiing was a bit sub-par in my book, steep slopes would sluff and you would be ridding on the frozen old surface, the snow was not dense enough to keep you off the bottom on even the lowest angle slopes, and the visibility was not very good for avoiding frozen nuggets, and yes rocks! that we don"t usually have to deal with this time of year. Last storm I was out in was a couple weeks ago, it came in when the old surface was not frozen and was also basically graupel and denser wet snow, which lead to much better bonding. Photos sluffing in the Keyhole produced with a ski cut, pa period of heavier snow, more showers pumping up the canyon

Hazard depends on new snow amounts and wind transport

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