Heavy snow is expected to hit the region over the next few days in the season's first major snowstorm.
The National Weather Service in Buffalo has issued a Winter Weather Advisory for all of Western New York until 5 p.m. Monday.
A Lake Effect Snow Warning takes effect at 5 p.m. Monday and lasts until 1 p.m. Wednesday for Erie, Genesee, and Wyoming counties. That same warning goes until 10 a.m. Wednesday for Chautauqua and Cattaraugus counties.
Snow will blanket the region Monday, though accumulation won't be high throughout the day. Less than an inch is expected.
The situation changes Monday night, where lake effect snow could be heavy at times. Five to nine inches are possible in Erie County, three to six inches in Genesee and Wyoming counties, and two to four inches in Chautauqua and Cattaraugus.
The greatest accumulation will likely come Tuesday, with 10 to 20 inches possible in Erie County, seven to 15 inches in Genesee and Wyoming, and two to four inches in Orleans and Genesee.
"The band of snow coming off of Lake Erie will be very narrow and it will be bringing one to two feet of snow to areas just south of the Buffalo airport, across central Erie County and towards the Southtowns and Boston Hills. Those are the areas that will likely see greater amounts of snowfall," said National Weather Service meteorologist Dave Thomas.
Lake effect snow will continue Tuesday night and Wednesday, and could be heavy at times, though the weather service is not yet projecting snow totals.