|Total Snowfall ending Friday Night|
National Weather Service Riverton WY 113 PM MST Wed Nov 15 2017 ...Heavy Snow in the Tetons and Gros Ventre Ranges late tonight through Friday... ...Moderate to heavy snow in much of the western mountains Thursday through Friday... ...Heavy snow possible in the Star Valley late Thursday night through Friday... .A storm system will impact the west from later tonight through Friday. Expect snow in the mountains and a mix of rain and snow in the valleys through Thursday. A cold front will move in Thursday night, dropping snow levels and bring the heaviest period of snow of the storm for Thursday night and Friday. The snow will be accompanied by gusty winds with areas of blowing snow. Teton and Gros Ventre Mountains- 113 PM MST Wed Nov 15 2017 ...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 5 PM MST FRIDAY... * WHAT...Heavy snow expected. Travel will be very difficult to impossible, including during the evening commute on Thursday. Total snow accumulations of 1 to 2 feet, with locally higher amounts on the west side of the Tetons, are expected. * WHERE...Teton and Gros Ventre Mountains. * WHEN...Midnight to 5 PM Friday. The heaviest snow from this storm will likely be Thursday night into at least Friday morning when snowfall rates over an inch per hour are quite possible. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Travel over Teton Pass will become increasing worse as this system develops.Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 113 PM MST Wed Nov 15 2017 ...WINTER STORM WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY AFTERNOON... * WHAT...Heavy snow possible. Plan on difficult travel conditions. Total snow accumulations of 3 to 6 inches are possible with higher amounts quite possible towards Alpine. * WHERE...Star Valley * WHEN...From late Thursday night through Friday afternoon. * ADDITIONAL DETAILS...Significant reductions in visibility are possible. Most of the area will see rain developing tonight and continuing through Thursday. A strong cold front will push through Thursday night changing the rain over to snow. The snow could be quite heavy at times late Thursday night into Friday. The northern part of the valley could see snowfall rates of an inch an hour. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts.