The National Weather Service has issued a Winter Storm Warning in effect until 5 PM on Sunday. Westerly flow aloft will back to the southwest and the jet stream will move overhead as a potent winter storm system moves into the area. This system is expected to favor the Tetons and Togwotee Pass, and 1.0 to 1.5 inches of water weight could be added to these areas by Sunday evening. During this time period, the Southwest Trails area could receive 0.5 to 1.0 inches of snow water equivalent. Overnight lows in the mountains will be in the mid-teens, and temperatures are not expected to significantly rise during the day. Southwesterly ridgetop winds at 20 to 35 miles per hour overnight will decrease to 15 to 25 during the day.
Travel will be very difficult to
impossible. Damage to trees and power lines is likely. Winds
gusting as high as 55 mph will cause widespread blowing and
drifting snow. A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. If you must travel, keep an extra flashlight, food
and water in your vehicle in case of an emergency. The latest
road conditions for the state you are calling from can be
obtained by calling 5 1 1.