* WHAT...A combination of widespread snow and localized lake effect snow. Additional snow accumulations 2 to 5 inches expected, with locally higher amounts possible across the hilltops south of Buffalo and across Orleans County. Lower-end amounts expected from the city of Buffalo to Niagara Falls. Winds gusting as high as 40 mph will create areas of blowing and drifting snow with poor visibilities at times. * WHERE...Erie, Niagara, Orleans, Genesee, Wyoming, Chautauqua, and Cattaraugus Counties. * WHEN...Until 7 PM EST Saturday. * IMPACTS...Plan on slippery road conditions and reduced visibilities. * ADDITIONAL DETAILS...A warm front will bring widespread light snow showers through the afternoon, which will intensify tonight as an Arctic front moves through. Snow showers then taper off to more localized lake effect snow late tonight through Saturday.