Details

• Date: 2013/11/17

• Observer: BoLars Matson

Location

• BC Zone: Front Range
• Area Description: Convex slope on the skiers right side of The Roll.

Weather

• Weather Description: Snowing early, clearing throughou tthe day. Windy.

Snowpack

• Snowpack Description: 12-16" of new snow on top of facets.

Snowpack Obsvervation Cracking: Shooting Collapsing: Minor

Avalanches

	Date	Location/Path	#	Elev	Asp	Type	Trig	SizeR	SizeD
	2013/11/17	Berthoud Pass west side	1	TL	NE	SS	AS	R2	D2
Date: 2013/11/17 Time: 12:00 PM Observer: BoLars Matson Area Description: The Roll Landmark: Berthoud Pass west side Average Slope Angle: 38 ° Maximum Slope Angle: 43 ° Elevation: 11000 ft Sliding Surface: O - Within Old Snow Weak Layer: Layer Weak Layer Grain Type: Faceted Crystals Average Crown: 55 cm Maximum Crown: 85 cm Average Width: 150 m Maximum Width: 150 m Average Vertical: 300 ft Maximum Vertical: 350 ft Comments: We had skied the center and skiers left side of The Roll a few times, with limited cracking or other signs of instability. We decided to check out the skiers right side, when I approached the convex roll at the top of the slope cracks shot out to my right about 50 meters. At the crown, there were numerous bed surfaces, all within the old snow. Once flowing, the slide scoured to the ground.

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