11th Annual Utah Snow & Avalanche Workshop Open and Motorized Sessions Oct. 27th.
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Observation Date: 
2/19/2017
Observer Name: 
Dave Garcia
Region: 
Moab
Location Name or Route: 
Corkscrew
Weather
Sky: 
Overcast
Precipitation: 
Moderate Snowfall
Wind Direction: 
South
Wind Speed: 
Moderate
Weather Comments: 
Light snowfall at the Trans La Sal TH around 9:30 AM. Quickly changed to moderate snowfall that lasted all morning, snow tapered off around 1:00. Another round of moderate snow started again around 2:45. We were mostly out of the wind zone today, moderate southerly winds on the top of Corkscrew.
Snow Characteristics
New Snow Depth: 
12"
New Snow Density: 
Medium
Snow Surface Conditions: 
Powder
Snow Characteristics Comments: 
Measured a legit 12 inches of snow in upper Corkscrew. 2 inches of new snow at the Trans La Sal TH. The new snow was medium density and made for great skiing!
Red Flags
Red Flags: 
Heavy Snowfall
Avalanche Problem #1
Type: 
Wind Drifted Snow
Trend: 
Same
Problem #1 Comments: 
I had been watching the Pre Laurel weather station yesterday, and after checking it again today, I'm sure wind loading is a concern up above tree line. We did not encounter any wind loading in corkscrew today. This terrain is low and mid elevation. Winds were out of the SE overnight and this morning, and I expected to see fresh wind drifts in upper corkscrew. We even skied the open shot on the far skiers left that faces WNW and to our surprise it was not wind loaded.
Avalanche Problem #2
Type: 
New Snow
Trend: 
Decreasing Danger
Problem #2 Comments: 
The new snow is medium density, and up to a foot deep in some places. On the more northerly aspects the new snow was well bonded to the old snow surface. I conducted some quick hand shears on SW faces on the way out to corkscrew and got relatively easy shears between the new and old snow interface. There is a firm base layer on this aspect. I wouldn't be surprised to see sluffs running in steeper terrain on this aspect. On northerly aspects the old snow is soft and well bonded to the new snow. I skied across some steep North facing test slopes with no results. I think any potential storm slabs problems could linger for one more day before stabilizing. Today I did not find any of the recrystallized old snow beneath the new snow surface. Based on my travels before this storm, I still think in the upper elevations you could find weaker, recrystallized old snow underneath the new snow on North and East aspects.
Today's Observed Danger Rating: 
Moderate
Tomorrows Estimated Danger Rating: 
Moderate
Snow Profile Coordinates: 
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