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Observation: Argenta

Observation Date
2/12/2019
Observer Name
B
Region
Salt Lake » Big Cottonwood Canyon » Mill D South » Kessler » Argenta
Location Name or Route
Argenta Area
Weather
Sky
Overcast
Wind Direction
West
Wind Speed
Calm
Weather Comments
Very little wind in mid canyon, yet at 2100 hours in Silverfork Moderate SW winds in a usually quiet location. Overcast skies in the afternoon after Few in the am until clouding up around noon. Temperatures rose rapidly and hit at least 40 degrees at 8000. Lower in the canyon the temperatures appeared to remain around the freezing mark.
Snow Characteristics
Snow Surface Conditions
Powder
Melt-Freeze Crust
Damp
Snow Characteristics Comments
Shady aspects continue to hold cold snow and excellent settled powder riding. Ski Penetration 24 cm. No wind affect observed in the areas traveled and very consistent bottomless riding. Aspects on the lower half of the compass are developing variable thicknesses of m/f crusts. Snow was damp by 1130.
Red Flags
Red Flags
Poor Snowpack Structure
Red Flags Comments
No Red Flags observed besides significant weakening in the surface snow. In areas that do not get disturbed by the pre-frontal winds these NSF's may present a problem once buried.
Avalanche Problem #1
Problem
Normal Caution
Trend
Same
Problem #1 Comments
Only issue of concern in areas traveled was the ability to get Loose Dry avalanches initiating on extremely steep slopes in the weakening surface snow.
Avalanche Problem #2
Problem
Normal Caution
Trend
Increasing Danger
Problem #2 Comments
The beginning of a very serious Roof Avalanche issue commenced after sundown as the temperatures began to cool. Extremely large/dangerous layers of ice are combined with over a meter of snow on many roofs and these are very deadly. There continues to be significant Hang Fire on many roofs and with the rising temperatures in the am this may help exacerbate this hazard.
Wind Slab issues are most likely increasing over night with the aforementioned winds, and the forecast for continued moderate to strong winds most likely will elevate the danger and this hazard significantly; and any additional snowfall will combine to contribute to more Cornice issue as well as growing sensitive Wind Slabs.
Danger observed in areas traveled today was Low, and Wednesday should at the very least be Moderate in the morning for isolated Wind Slabs. This Problem and subsequent Danger most likely will rise to Considerable if the forecast for incoming snow validates.
Today's Observed Danger Rating
Low
Tomorrows Estimated Danger Rating
Moderate