The Great Lakes experienced a surge of activity as arctic air passed over record-warm waters, generating prolific snowfall.

Here’s a day-by-day look at the winter weather forecast. The sudden freeze that has chilled many who had experienced a somewhat toasty autumn in the Eastern United States is set to continue this week as far south as Florida,

In late fall and winter, lake-effect snow is a common occurrence in the Great Lakes region. "Lake-effect snow occurs when cold air, often originating from Canada, moves across the open waters of the Great Lakes.