The National Weather Service has issued a winter weather advisory that begins tonight in Wyoming County.

The advisory, the result of expected lake effect snow, will be in effect from 6 tonight to 10 p.m. Saturday. The advisory also includes Chautauqua, Cattaraugus and southern Erie counties.

Total snow accumulations of 4 to 7 inches are forecast in the most persistent lake snows.

Travel will be difficult at times with snow covered roads and poor visibility, the Weather Service said.

A separate winter weather advisory will be in effect from 6 tonight to 6 p.m. Saturday for Monroe County.

Total snow accumulations of 3 to 6 inches are expected in the most persistent lake snows, with the greatest accumulations along and north of Route 104, the Weather Service said.

Plan on snow covered and slippery road conditions with reduced visibility at times, the Weather Service said.

Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and

visibilities, the Weather Service said.

Lake effect snow will develop southeast of Lakes Erie and Ontario tonight and continue through Saturday, with localized moderate accumulations, the Weather Service said in a forecast discussion.

Outside of the lake effect areas a few periods of snow showers will bring minor accumulations.

There are no advisories for Genesee, Livingston, or Orleans counties.

Genesee County could see 2 to 4 inches of snow from tonight through Saturday night. Snow showers are forecast with 1 to 2 inches possible tonight, and 1 to 2 inches on Saturday and less than a half-inch on Saturday night, according to the Weather Service forecast.

Similar accumulations are possible in Orleans County, where the forecast indicates an inch of snow tonight, 1 to 3 inches Saturday, and up to a half-inch on Saturday night.

In Livingston County, snow showers are forecast with an inch or less of snow expected through Saturday night.

High pressure will bring a return to dry weather Sunday. An area of low pressure will then cross the Great Lakes late Sunday night and Monday, producing periods of wet snow that may mix with some rain as temperatures warm above freezing, the discussion said.

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