A winter storm brought record-breaking snowfall to the Cincinnati area, with some locations receiving over a foot of snow. An extreme cold warning is set to take effect, with dangerously low wind chills which can cause frostbite on exposed skin.

As millions of Americans hunker down for the winter storm, 19 states and Washington, D.C., have declared states of emergency.

Record warmth in Florida was the only thing keeping that average from going even colder, said former National Oceanic and Atmospheric Administration chief scientist Ryan Maue

Reporters from across the NPR Network are covering the storm in each state — the impact and how officials are responding.

Winter storm warning ends at 10 a.m., but hundreds of schools remain closed and government buildings are shut.

A winter storm that promised to bring the heaviest snowfall for Connecticut in years arrived Sunday morning, prompting Gov. Ned Lamont to declare a state of emergency that banned commercial vehicles from the state's highways during the height of the storm.

A winter storm warning is in effect for Massachusetts, and communities across the state have cancelled school.

DETROIT - The National Weather Service has now issued a Winter Storm Warning for one county and Winter Weather Advisories for other areas ahead of a massive winter storm that is expected to nick the southern tier of Michigan.