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Observation Date: 
02/28/2017
Observer Name: 
Toddeo
Region: 
Southwest
Location Name or Route: 
Pahvants - Maple Hollow
Weather
Sky: 
Broken
Precipitation: 
Light Snowfall
Wind Speed: 
Calm
Weather Comments: 
Broken sky with some insatbility showers, trace of snow.
Snow Characteristics
New Snow Depth: 
8"
New Snow Density: 
Low
Snow Surface Conditions: 
Powder
Melt-Freeze Crust
Damp
Snow Characteristics Comments: 

HST=6" at the 6,400' trailhead and 8" at 8,400'.  This is more than the 4" reported at the Pine Creek and Bobs Hollow Snotel sites.

Some damp snow on the road at my exit, crust forming in shady spots.  

Red Flags
Red Flags: 
Wind Loading
Red Flags Comments: 
Wind slabs were present on the NW facing ridge I skied and skinned. Generally buried below 4-8" of storm snow. I would guess these formed as the wind picked up Sunday night into Monday. Hard to isolate the wind slabs in many locations on slopes exceeding 30 degrees, they broke without a clean shear and seemed to lack energy.
Avalanche Problem #1
Type: 
Wind Slab
Trend: 
Same
Problem #1 Comments: 

Moderate Hazard in this area.  I walked on top of a lot of supportable wind slabs without any cracking or collapsing.

Avalanche Problem #2
Type: 
Wet Slab
Trend: 
Increasing Danger
Problem #2 Comments: 

Wet slabs will be an issue if the sun comes out.  Southerly aspects.

Snow Profile
Aspect: 
Northwest
Elevation: 
8000
Slope Angle: 
30
Comments: 

Upper snow profile showing results of ECT.  ECTP 8, Q2/3 , 8" below surface, at the base of a 2" thick 1 finger wind slab.  Failed on a slightly damp low density layer.  Storm snow from the last 2 storms above the crust is 16" at this location.  Glove is sitting on layer that failed.  Trail breaking a bit of an effort.

Photo below, instability showers.

Photo below:  Terrain.

Overall I would say a moderate danger, consistent with what I saw on Sunday, the new snow does not appear to have increased the hazard in this area.

Today's Observed Danger Rating: 
Moderate
Tomorrows Estimated Danger Rating: 
Moderate
Snow Profile Coordinates: 
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