Details

• Date: 2012/03/04

• Observer: John MacKinnon
• Organization: Crested Butte Avalanche Center

Location

• Operation: CB Avalanche Center
• Area Description: Mt. Emmons
• Route Description: Red-Coon Glades--S, SE BTL

Weather

• Weather Description: Strong solar radiation, mild temperatures and light to moderate northwest winds. Did observe some blowing snow off Coon summit and Emmons summit ridge. Airtemp of +1.5C at 1230 pm

Snowpack

• Snowpack Description: Snow became increasingly moist throughout the day and SE aspects began re-freezing by 2 pm. Got two small collapses on the Red Coon Ridge on the ascent and 1 large, pronounced rumbling collapse accompanied by small shooting cracks on ski the descent when all 3 skiers regrouped in a flat area. Both were on SE aspects below treeline. Heard a second hand account of skiers triggering a wet-loose slide on a south aspect below treeline at 1:15 pm.

Snowpack Obsvervation Cracking: Minor Collapsing: Rumbling

Avalanches

	Date	Location/Path	#	Elev	Asp	Type	Trig	SizeR	SizeD
	2012/03/04	Red Lady Glades	1	<TL	S	WL	AS	R1	D1
Date: 2012/03/04 Observer: John MacKinnon Organization: Crested Butte Avalanche Center Area Description: Skier described area as having shallow snpx Sliding Surface: I - New/Old Interface Average Width: 8 ft Average Vertical: 150 ft Comments: Skier did a ski cut and triggered a WL