Michigan is experiencing frigid temperatures and heavy snow due to a dip in the jet stream, not the polar vortex. The polar vortex is a large-scale cyclone of cold air that typically stays far north ...

A weakened polar vortex is pushing frigid Arctic air into the central and eastern United States. Michigan will experience its coldest temperatures over the weekend, with some areas dipping below zero.

Florida is preparing for a sharp temperature drop this week as Arctic air pushes deep into the Southeast, bringing the threat of freezing temperatures to much of the state — nearly a year after a ...

A blast of Arctic air is expected to bring a sharp temperature drop to Florida this week. Freeze watches have been issued for 53 of Florida's 67 counties ahead of the cold front. The cold snap is ...