Lake-effect snow forms when a cold air mass passes over a relatively warm lake. Lake-enhanced snow occurs when a weather system interacts with the lake's moisture. Skip Navigation.

Over the weekend, parts of upstate New York, Pennsylvania, Ohio and Michigan saw nearly 4 feet of lake-effect snow — but what's behind the weather phenomenon?

Lake effect snow has already pummeled some parts of Michigan this winter, and more is forecast to fall. The heavy snowfall in some places — the UP and the northwestern Lower Peninsula — has ...

Lake effect snow occurs when cold air moves across the open waters of the Great Lakes creating snowfall, said Lily Chapman, a meteorologist at the NWS Forecast office in Marquette.

Lake-effect snow, gusty winds, and cold air impact tonight's forecast. A widespread 1-3" is likely, but 3-6" is expected in the snowbelts.

Lake effect snow has already pummeled some parts of Michigan this winter, and more is forecast to fall. The heavy snowfall in some places — the UP and the northwestern Lower Peninsula — has ...

A multi-day lake effect snow event off Lake Erie is ongoing, making travel "very difficult" throughout the Great Lakes region as a total of 3-12 inches of new snow was produced near Cleveland ...

It’s still snowing in the Great Lakes after it snarled travel, stranded motorists and buried homes. A short-lived break is coming before more snow arrives.