Tetons

Very dangerous avalanche conditions exist at all elevations. An avalanche warning remains in effect. Many slopes that are typically skied or rode are unstable and dangerous. Warm temperatures, heavy snowfall, strong winds and the possibility of rain presents the potential for widespread natural avalanche activity. Human triggered avalanches are very likely. Small avalanches are certain and many medium and some large avalanches are likely. Slab depths to six feet are possible at the mid and upper elevations. Large events could run full track and deposit huge volumes of debris in avalanche run-out zones. At the lower elevations wet slab and wet loose slides to the ground are likely. Travel in avalanche terrain is not recommended.

The snowfall will diminish from the northwest to the southeast this evening. Periods of heavy snowfall will likely persist over the Salt River Range, the Wyoming Range and the Wind River Range for a longer time tonight. Lighter snowfall is expected in other areas and in these ranges by morning. New snow accumulations of four to eight inches are possible overnight. Temperatures will be much cooler with overnight lows dropping to near 10 degrees in the mountains and into the mid teens in the valleys. On Sunday skies will be overcast with light snowfall. Daytime accumulations of several inches are possible in the mountains. Temperatures will rise into the mid teens in the mountains and into the mid 20s at the lower elevations. Winds will be west at 20 miles per hour. The general avalanche hazard is expected to be CONSIDERABLE. Avalanche conditions have been very dangerous. The colder temperatures, significant decrease in the snowfall intensity and diminishing winds will result in a down grade to dangerous avalanche conditions. These conditions will lessen the potential for natural avalanche activity to occur, however natural avalanche activity will still be possible, especially in the ranges that continue to receive heavy snowfall overnight. The potential for humans to trigger large dangerous avalanches with fatal consequences will remain high. Larger triggers such as snow machines are especially vulnerable. Expert terrain analysis skills and restraint are essential for safe travel in avalanche terrain.