Tetons

The hazard will be on the increase as west winds form new soft surface slabs up to two feet deep that will gain volume as the day progresses. These slabs are likely to be easily triggered by backcountry travelers and may release spontaneously from steep upper elevation starting zones later in the day. Deep slab instabilities persist. Some potential remains for humans to trigger dangerous hard slabs two to eight feet in depth.

A winter storm will increase in intensity Saturday Night and spread east on Sunday. A winter storm warning has been issued by the National Weather Service. Another foot of new snow is likely by Sunday evening. Strong west-southwest winds will cause areas of blowing snow with poor visibility. Mountain temperatures will be in the single digits above zero to teens.The general avalanche hazard in the mountains of Western Wyoming is expected to increase to HIGH. Intense snowfall and strong winds will combine to create unstable conditions on a variety of aspects. Dangerous human triggered and naturally released slab avalanches are likely and could run full path. Travel in avalanche terrain is not recommended.