* WHAT...Lake effect snow expected. Total snow accumulations 7 to 14 inches in the most persistent lake snows. This will be a long-duration event with two main rounds of snow. First round will be Sunday afternoon through late Sunday evening. The expect a break in the heavier snows Sunday night into the start of Monday morning before redeveloping by midday Monday and persisting into Monday night. Winds gusting as high as 35 mph will cause blowing and drifting snow. * WHERE...The Eastern Lake Ontario Region. * WHEN...From 1 PM Sunday to 7 AM EST Tuesday. * IMPACTS...Travel will be very difficult. The hazardous conditions will impact the Monday morning and evening commutes.