Tetons

Very dangerous avalanche conditions exist at mid and upper elevations. An avalanche warning remains in effect. The mountains have received over a foot of additional snow in the past 24 hours with strong northwest winds since 10 P.M. People could trigger dangerous slabs to two feet in depth in the new snow and/or pull out deeper slabs to six feet in depth from the several feet of snow that has fallen since Thursday. Large events could run full track and deposit huge volumes of debris in avalanche run-out zones. At the lower elevations avalanches could be triggered in very steep areas like ravines.TRAVEL IN AVALANCHE TERRAIN IS NOT RECOMMENDED.

A moist low to mid level westerly flow will keep clouds over the area with periods of light snowfall Sunday night. The snowfall will increase in coverage and intensity Monday afternoon. Daytime mountain high temperatures will reach the low 20s after overnight lows near ten. Ridgetop winds will be southwesterly at 20 miles per hour.As the snowpack settles and adjust to the new load and after very warm temperatures Saturday the deeper slabs will be slightly more difficult to trigger. Saturday's snow will continue to be sensitive to human triggers especially with any perios of direct sunshine on slopes. Triggered slides could be one to six feet in depth and run entire slidepaths. The Aalanche hazard is expected to be CONSIDERABLE in the Tetons and Salt/Greys areas. In the Continental Dived/Togwotee Pass area two feet of new snow rests on a very weak faceted base. Activities such as high marking are likely to initiate large, dangerous slides two to four feet in depth. The avalanche hazard there will be MODERATE.