Details

• Date: 2017/02/28

• Observer: crested butte avalanche center
• Organization: Public

Location

• BC Zone: Gunnison
• Area Description: ACTIVITY: AMGA SGC LOCATION: Gothic Valley ELEVATION: 9,300-11,100 ASPECT: North/East/South/Southwest

Weather

• Weather Description: S-1 most of the day with periods of S3. Increasing winds through the day as snow decreases with strong gusts in the afternoon. Winds from the West and high temp of -7.

Snowpack

• Snowpack Description: GUIDE(S): Steve Banks/Mike Soucy DATE: 20170228

Avalanches

• Avalanche Description: About 10" of new snow since yesterday morning. Lots of small, localized collapses underfoot throughout the day on all aspects travelled on. 1 test profile showed HS 230 cm with 35 cms of newer snow over crust facet sandwich. ECTX but prying with the shovel popped the slab off on 1cm thick .5 mm facets between 2 crusts. Remote triggered a D2 and a small D1 on the NE slopes of Snodgrass skiers left of the low point of the saddle. Triggered from a small bench about 200' away from the slope. 200' wide running about 600 vertical with a crown of up to 53 cms. Weak layer was buried near surface facets. 35 degree slope at 10,400' Crown investigation showed CT 21 SP failing on the same NSF. Also noted a large D2.5 off of the East face of Gothic initiating just below the very large cornice on the summit ridge and running to about 10,200 just above the valley floor. Watched a release out of very steep terrain, East facing above Copper Creek likely windslab and maybe D2. Noticed 2 other pockets, mid elevation roughly 10,600 with minimal propagation and D 1.5. Peak of instability seemed to come around 3 pm today. Surface snow became noticeably stiffer in the afternoon.

	Date	Location/Path	#	Elev	Asp	Type	Trig	SizeR	SizeD
	2017/02/28  †	Snodgrass Mountain	2	<TL	NE	SS	AS / r		D2
Date: 2017/02/28 (Estimated) Observer: crested butte avalanche center Organization: Public Landmark: Snodgrass Mountain Average Slope Angle: 35 ° Elevation: 10400 ft Average Crown: 24 in Average Width: 200 ft Average Vertical: 600 ft Comments: Fro m 200 ft away
	2017/02/28  †	Gothic	1	>TL	E	R	N		D2.5
Date: 2017/02/28 (Estimated) Observer: crested butte avalanche center Organization: Public Landmark: Gothic
	2017/02/28  †		2	U	N	U	N		D2
Date: 2017/02/28 (Estimated) Observer: crested butte avalanche center Organization: Public Area Description: Copper Creek

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