There is a Slight Risk of excessive rainfall over parts of the SouthernPlains/Lower Mississippi Valley on Saturday.Light to moderate snow over parts of the Central Rockies and CentralHigh Plains overnight Friday into Saturday and a second area of light snowover the Cascades and Northern Intermountain Region on Sunday.Strong to severe thunderstorms from the southern Mid-Atlantic,Southeast to the Southern Plains on Friday and Saturday.A front extending from Upstate New York southward to the Mid...