Tetons

At the upper elevations pockets of surface slab 6 to 18 inches in depth exist. Yesterday a snowboarder on Cody Peak was buried with only his fingers exposed after he triggered a slab avalanche between Four Shadows and No Shadows Couloirs. He was the forth person on this very steep slope. The shallow slab propagated above him and entrained old and new snow from a cornice in a rocky, cliff area above the slope and created a substantial volume of avalanche debris. He survived with only minor injuries. Similar events are possible today in steep couloirs, beneath cornices and in cliff areas. Avalanches are unlikely at the lower elevations. At the mid elevations isolated pockets of surface slab up to 18 inches deep could be human triggered in extreme terrain .

Snowfall will continue overnight and into Thursday morning before decreasing during the day. Accumulations of up to six inches are likely. Winds at 10,500 feet will be westerly at 30 to 35 miles per hour with higher gusts. Temperatures will be in the upper teens and low 20s.The strong winds and new snow will create new soft slabs up to a foot deep on the lee aspects of higher elevation ridge crests. At the higher elevations the general avalanche hazard is expected to be MODERATE. Humans who venture into steep avalanche paths could trigger soft surface slabs up to two feet deep. Those who venture into extreme terrain or high mark the steep walls of cirques and basins could trigger deeper hard slabs up to four feet deep. The general avalanche hazard is expected to be LOW below an elevation of 8,000 feet.