Avalanche: Mirror Lake Highway 12/19/2010

Observer Name:

Ted Scroggin

Observation Date:

12/19/2010

Occurrence Date:

12/19/2010

Occurrence Time:

Morning

Region:

Uintas
Mirror Lake Highway

Location Name:

Highway 150, north slope, mile marker 36

Location

40° 46' 3.1512" N, 110° 52' 58.62" W

Avalanche Characteristics

Elevation:

9800'

and above

Aspect:

Northeast

East

and steeper

Slope Angle:

Trigger:

Natural

Avalanche Type:

Soft Slab

Weak Layer:

Density Change

Depth (avg):

14"

Width:

80'

Vertical:

40'

General Comments

I combined a few of these natural slides since they all had similar characteristics. Heavy wet snow continued to fall today which is overloading buried weak snow. Natural sluffing within the new snow was evident all the way up the highway today.

General Comments 2

As I gained elevation and got into steeper rocky and shallow weak snow these 12-14" natural soft slab avalanches were observed. These slides appeared to be failing on a density change within the storm snow.

General Comments 3

General Comments 4

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