Observer Name
Ted Scroggin
Observation Date
Tuesday, January 25, 2011
Avalanche Date
Saturday, January 22, 2011
Region
Uintas
Location Name or Route
Humpy Creek
Elevation
10,500'
Aspect
North
Slope Angle
32°
Trigger
Snowmobiler
Trigger: additional info
Unintentionally Triggered
Avalanche Type
Hard Slab
Weak Layer
Surface Hoar
Depth
18"
Width
100'
Vertical
400'
Comments
This human triggered avalanche likely occurred over the weekend (see photo page) and failed on the surface hoar layer. It released just above mid slope and was possibly triggered near some trees where the slab was thinner and the rider was able to break through the rain crust and into the surface hoar layer. Much of the slide has been blown back in and today's storm and poor visibility did not allow for a good observation.
Comments
I was getting repeatable CT19 Q1 results on surface hoar along the flank of the slide.
Comments
The extended column test was ECTP 24 Q1on surface hoar.
Coordinates