In isolated areas, a chance continues for large triggers such as snow machines or cornice failures to trigger large persistent slab avalanches involving buried weak layers. Isolated pockets of wind slab could also be triggered in very steep terrain above 9000 feet. As the day warms the likelihood for loose wet avalanches on steep sunlit slopes will increase. In the valleys, beware of exposure to roof slides.
Deep persistent slab avalanches could be human triggered in isolated areas with depths of three to six feet. Initiation of one of these dangerous slabs my take a larger trigger, such as a snow machine, impacting a weak, thin spot on a slope. Previous tracks on a suspect slope should not be considered to be an indication of stability.
( Discussion is generated from the previous day's afternoon forecast. )Sunday looks to be mostly clear and slightly warmer. Clouds are to increase in the afternoon as weak system approaches from the northwest. This system has limited moisture but may deliver brief light snow showers to a few mountain locations. Winds on Sunday are to be light. The general avalanche danger is expected to remain Low in the Tetons and Moderate in the Southwest Trails and Togwotee Pass areas where the deep persistent slab problem lingers. Wet slides will become possible in very steep terrain during the afternoon after the snow surface is weakened by sunlight and warm temperatures.
