An additional 6-12 inches of snow is possible in more persistent lake effect snow bands across the Southern Tier especially on the Chautauqua Escarpment by Tuesday evening. Little or no additional accumulation is expected across the Buffalo-Niagara Falls metro.

Lake-effect snow typically happens in the late fall and early winter when the lakes are ice-free and the water is still relatively warm.

Post-Thanksgiving travel will be treacherous in parts of the Great Lakes region on Sunday due to heavy lake-effect snow, while biting cold temperatures sweep across a large swath of the United States.

BUFFALO, N.Y. (WIVB) — Lake-effect snow hit Western New York on Friday and has continued throughout the weekend and into Monday, prompting multiple counties to be placed under and lake-effect snow warnings and states of emergency.

Post-Thanksgiving travel will be treacherous in parts of the Great Lakes region on Monday with more lake-effect snow falling after the region was already buried under feet of it, while cold temperatures remain across a large swath of the United States.

Lake-effect snow blowing in from the Great Lakes has blanketed parts of Michigan, Ohio, Pennsylvania and New York, stranding hundreds of vehicles on roads and snarling post-Thanksgiving travel. Well over two feet of snow had fallen in many parts of the region by early Monday,