Tetons

An AVALANCHE WARNING REMAINS IN EFFECT UNTIL 11 PM TONIGHT. In the past 30 hours nearly three feet of new snow with about 1.5 inches of moisture has fallen on Rendezvous Mountain. This snowfall was accompanied by strong southerly winds that veered to the northwest early this morning. Large natural avalanches have impacted the highways on Teton Pass and South of Jackson. Deep slab instability associated with slick November rain crusts exists. Large destructive hard slabs up to six feet in deep are certain to be sensitive to human triggers and are likely to release naturally. TRAVEL IN AVALANCHE TERRAIN IS NOT RECOMMENDED.

Periods of light snow are likely tonight with accumulations of one or two inches possible at the highest elevations. Snowfall intensity will increase on Saturday and continue into Sunday. Temperatures will rise into the teens. Strong west-southwest winds will accompany this snowfall.The general avalanche hazard is expected to be CONSIDERABLE in the Teton and Greys River/Southwest Trails area on Saturday. Deep slabs up to six feet in depth lie upon good sliding surfaces and weak layers of faceted snow. These very dangerous slabs exist on a variety of aspects and could be triggered by the weight of a single human. The general avalanche hazard in the Continental Divide/Togwotee Pass area is expected to be MODERATE. Surface slabs up to three feet in depth could be human triggered on some steep slopes with fresh deposits of wind drifted snow.