Observation: Upper Weber Canyon

Observation Date
03/6/2017
Observer Name
C Brown

Region:

Location Name or Route
Upper Weber Canyon
Weather
Sky
Obscured
Precipitation
Light Snowfall
Wind Direction
Southwest
Wind Speed
Moderate
Weather Comments
Snowing and blowing in the morning to slightly backing winds and blue skies by the afternoon. Observed moderate winds on 10,000' ridge lines.
Snow Characteristics
New Snow Depth
8"
New Snow Density
Low
Snow Surface Conditions
Powder
Snow Characteristics Comments

8" or more of new snow that was wind effected and upside down where effected by the wind.  Would stop me dead in my tracks on the ridge lines.  Cold light powder on the protected slopes.  Lots of available snow for transport.

Red Flags
Red Flags
Recent Avalanches
Wind Loading
Cracking
Red Flags Comments
Lots of shooting cracks, sensitive SS wind slabs and natural wind slabs (probably cornice triggered). Slabs were only about 8~10" deep where I observed. Would imanagine that there were some pockets slightly deeper. Would see propogating cracks shooting out 40~80' in front of my tips. Easily managable today, and soft shallow and preictible. Observed quite a bit of snow transport going on throughout the day.
Avalanche Problem #1
Type
Wind Slab
Trend
Decreasing Danger
Problem #1 Comments

Saw widespread sensitive shallow soft slab wind slabs through the day.  Easily triggered and natural triggered from loading and new cornice fall.  Very predictable and right off the ridge lines.  Would think these are slightly thicker at higher elevations and possibly stiffer.  Would expect them to become stiffer, more stubborn and more connected with the continued winds.  The problem should settle out quickly.

Avalanche Problem #2
Type
Cornice
Problem #2 Comments

The corni continue to grow and are getting larger and more sensitive with the new low density snow added to them.

Comments

Picture of the wind transport going on at 10,000' ridge lines, two pictures of soft sensitive wind slabs easily provoked, and a picture of a mid sized cornice, there are some monsters out there way bigger than this one.

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