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Avalanche: Toledo Bowl

Observer Name
Hardesty and Wagner
Observation Date
Saturday, February 20, 2010
Avalanche Date
Friday, February 19, 2010
Region
Salt Lake » Little Cottonwood Canyon » Toledo Bowl
Elevation
9,700'
Aspect
South
Slope Angle
41°
Trigger
Skier
Trigger: additional info
Unintentionally Triggered
Avalanche Type
Soft Slab
Depth
12"
Width
70'
Vertical
Unknown
Comments

Weaknesses found across the range from the Feb 8-10th period of high pressure, high RHs, and little wind. The late Wed/early Thurs light snowfall well preserved both surface hoar and surface facets. This has been the culprit in the bazillions of human triggered slides since the 11th or so.

It is debatable whether the number of slides triggered have been related to surface hoar. Many are confirmed, many are not - and failed at the diurnal or radiation recrystallized snow. Many have been triggered remotely. Regardless, the weaknesses formed at the same time period and will be somewhat slow to stabilize.

Comments

Here's another shot looking across the bed surface to see weaknesses above the newer crust and then of course the older one.

Comments

Route continued into Cardiff with no cracking or collapsing.

Coordinates