A monster winter storm is slamming the entire tri-state area — along with half the U.S. — dumping up to 18 inches of snow on parts of the region and unleashing absolute havoc across the country. The timing,

Much of the U.S. is bracing for more extreme winter weather over the next week. Jay Bonafede, communications director for the American Red Cross, spoke to Yahoo about how people should prepare for extreme winter weather.

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

Hamilton County remains under a level 2 snow emergency, meaning only those who consider it necessary should be out on the roads. Butler, Clermont and Warren counties have all reduced to a level 1 snow emergency, meaning no roads are closed but unnecessary travel is discouraged.

What to Know A foot or more of snow could blanket the NYC area this weekend, as much of the U.S. is bracing for a massive winter storm. Parts of the region, like Poughkeepsie, could see 18+ inches. It appears the storm will arrive Sunday morning and will lead to hours of snowfall.

WARMING CENTER LOCATIONS: With our extreme cold snap AND winter storm on the way, many have asked us if Geauga County has warming centers. These emergency shelters open for emergencies like prolonged power failures, destructive storms, and extreme cold/heat situations. See list pic.twitter.com/9Q7h9YQIq2

ABC News' Reena Roy reports on the winter storm that is affecting air travel across the country. Alzheimer's Scientists Reveal New Early Warning Sign Starmer denounces Trump's 'appalling' remarks on NATO troops What to do when car doors are frozen Videos and witnesses of fatal Minneapolis shooting at odds with Trump administration's statements 'Sinners' will rule on Oscar night.