Tetons

Below 10,500 feet the snowpack is mostly stable. Above 9,000 feet, backcountry travelers could trigger slab avalanches up to 18 inches in-depth on leeward slopes. The potential to trigger these slabs will increase during the warmest periods of the day. If the winds remain light and skies clear, daily warming could result in small, wet loose avalanches on solar aspects at all elevations, and cornices could fail. Skiers and riders should monitor slopes and seek shaded terrain as sunlit aspects become wet.

The National Weather Service has issued a Winter Storm Warning for the Teton and Togwotee Pass forecast zones beginning at 6:00 AM on Saturday and continuing through 6:00 PM on Sunday. Cloud cover will increase overnight, and light snowfall will develop in the morning. As the day progresses, snowfall intensity will ramp up with the highest precipitation rates in the afternoon. By tomorrow evening, four to eight inches of new snow could accumulate up high. A mix of rain and snow will be possible in the valleys after midday. Overnight lows in the mountains will be in the upper teens before rising into the mid-20s in the afternoon. Southerly ridgetop winds will veer to the southwest and increase to 20 to 30 miles per hour.The general avalanche hazard is expected to be Low on Saturday. After mostly stable avalanche conditions in the morning, new snow and wind will slowly form isolated pockets of wind slab in the mountains. In steep, wind loaded terrain, skiers and riders could trigger these slabs with depths reaching 6 to 12 inches by tomorrow evening. Valley rain could also result in small wet slides at the lower elevations in the afternoon.