Avalanche: Salt Lake

Observation Date
Saturday, March 16, 2013
Avalanche Date
Saturday, March 16, 2013
Region
Salt Lake
Location Name or Route
Avalanche Cycle, BCC: Power Plant Chutes, Argenta Chutes, Argenta Trees, Lower Reed and Bensen Ridge Glades, Mid Big Cottonwood Canyon Resort
Elevation
9,000'
Aspect
North
Slope Angle
Unknown
Trigger
Natural
Avalanche Type
Wet Slab
Avalanche Problem
Wet Snow
Weak Layer
Wet grains
Depth
3'
Width
Unknown
Vertical
Unknown
Comments

This is a general observation listing the numerous slides that were visible from the highway, and active on March 16, 2013. The common elements to all these slides were:

1. All were heat related, and all occurred in the early pm. 2. All areas except the West facing lower Reed and Bensen Glades had north in them. 3. Elevations in the Argenta area and the three Power Plant Chutes ranged from 8600 to 7000. 4. The elevation in the Mid Big Cottonwood Area that had two slides was approximately 9300. 5 All areas were harboring buried facets. 5. All slides appeared to have initiated as Loose Snow Wet Avalanches and immediately stepped down to the buried faceted layers, gouging and entraining significant amounts of snow. 6. All slides deposited possibly unsurvivable debris piles. 7. All slides initiated on slope angles > 35 degrees.

Due to flat light conditions and the far distances from which many of these avalanches could be observed, photos are limited. Direct observation from the highway will continue to provide excellent detailed examinations.