Winter Storm Warning in effect from 5 PM this afternoon to 5 PM MST Monday... The National Weather Service in Riverton has issued a Winter Storm Warning for snow and blowing snow... which is in effect from 5 PM this afternoon to 5 PM MST Monday. The Winter Storm Watch is no longer in effect. * Timing... light snow will move into and increase in extent across western Wyoming late this afternoon... becoming moderate to heavy at times tonight through Monday morning before tapering off later Monday afternoon. * Snow totals... 5 to 10 inches in the valleys. 10 to 18 inches in the mountains. * Main impact... roads and highways will become slick and snow packed and travel will be difficult at times. Precautionary/preparedness actions... A Winter Storm Warning means significant amounts of snow, and or blowing snow are expected or occurring. This could make travel very hazardous or impossible. If you must travel keep some food, water, and an extra flashlight in your vehicle in case of an emergency. Check the latest Road conditions at wyoroad.Info or by dialing 5 1 1.