Tetons

At upper elevations in shaded areas humans could trigger slabs to four feet in depth in steep, avalanche-prone terrain. As the 90 inches of new snow since early February settles and adjusts to the warming, all steep slopes will become less stable and large, natural avalanches from the higher peaks will be possible in avalanche paths and the chance for natural and human triggered, dangerous slides to four feet in depth will increase. Wet slides will be possible on steep, sunlit areas at all elevations by early afternoon. Adjust your travel plans to avoid steep, sunlit slopes.

A Pacific low pressure trough and cold front will move into western Wyoming late Monday night with snow becoming widespread across the mountains through Tuesday. The snowfall will favor the Tetons which are expected to have a few inches of accumulation by Tuesday morning then up to six more during the day. The Southwest Trails/Greys River mountains should expect two to four inches of snow and the Togwotee Pass area three to five inches by evening. Temperatures will fall to the upper teens overnight then climb to the upper 20s during the day. Winds will be southwesterly at 25 to 30 miles per hour.Cool temperatures should reduce or eliminate the chance of wet-loose or wet slab avalanches for Tuesday. New snow and strong winds will create an increasing chance for humans to trigger soft slabs on lee slopes and sloughs on slick sun crusts on many aspects. North facing slopes at upper elevations still hold some potential for people to trigger deeper slabs to three feet in depth in steep areas. The general avalanche hazard is expected to be Moderate.