Active AlertsRochester, NY

What: Lake effect snow. Additional snow accumulations 3 to 6 inches in the most persistent lake snows.
Where: Niagara, Orleans, and Monroe Counties.
When: Until 1 AM EST Thursday.
Impacts: Roads, and especially bridges and overpasses, will likely become slick and hazardous.

During lake effect snow, the weather can vary from bands of locally heavy snow with greatly reduced visibilities to dry conditions just a few miles away. Be prepared for rapid changes in weather, visibility, and road conditions.