Overview
- More than 105 million people are under National Weather Service alerts for freezing conditions, winter weather and lake-effect snow across the eastern two-thirds of the U.S.
- Great Lakes snowbelts face heavy lake-effect bands with localized storm totals reaching 12 to 18 inches in parts of Michigan, Indiana and Wisconsin, with hazardous commutes in affected corridors.
- Freeze watches and warnings stretch from the Lower Mississippi Valley to the Virginia Tidewater and into parts of Florida, with record or near-record lows possible Tuesday in cities including Birmingham, Tupelo, Knoxville, Memphis and Nashville.
- Gusty northwest winds frequently in the 25–35 mph range are driving wind chills into the teens and 20s and creating localized travel and visibility problems.
- The coldest period arrives Monday night into Tuesday before temperatures moderate midweek, as officials in New York prepare plow fleets and signal that cold-weather shelter protocols may be triggered.