Observation: Burn Bowl

Observation Date
01/1/2018
Observer Name
Pagnucco, A Ward

Region:

Location Name or Route
Burn Bowl
Weather
Sky
Scattered
Wind Direction
West
Wind Speed
Moderate
Weather Comments
Blustery on the ridgetops
Snow Characteristics
Snow Characteristics Comments

Snow surface was a mixed bag of NSF, wind crusts, sun crusts, etc. The most pleasant conditions were found on sheltered N facing low angle slopes. Everything else was either wind hammered or covered in a thin melt-freeze crust or just too shallow. 

Red Flags
Red Flags
Collapsing
Poor Snowpack Structure
Red Flags Comments
Major audible collapses at low and mid elevations on most aspects. No noticable collapsing above 8000'.
Avalanche Problem #1
Type
Persistent Slab
Trend
Same
Problem #1 Comments

Had failure upon isolation for CT and ECT at facets directly above Thanksgiving crust. Secondary weak layer is about 15cm above the crust at new old interface (also facets).

Comments

Most notable from today was:

 - continued collapsing at low and mid elevations. 

- failure of slab upon isolation 

- two distinct weak layers at 40 cm down and 55 cm down from top. Both facets. 

- the wind has done considerable damage to any exposed terrain. 

Pictures:

1. Sled catchers becoming more visible as snow continues to settle.

2. The wind has hammered exposed terrain as well as ridgetops. Wind slabs are so hard that skis make no indentations. 

3. Variable conditions.

4. Two obvious weak layers. The upper layer is small facets just underneath last week's storm snow. The lower layer is larger facets above the Thanksgiving crust. Both are weak though the slab failed upon isolation at the facets above the Thanksgiving crust. 

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