The new date is Dec 22, 2022, 09:32amEST.

More than 1,400 flights in the U.S. have been canceled Thursday morning due to the winter storm.

US-LIFESTYLE-holiday-travel

Millions of Americans were warned that a winter storm could ruin holiday travel plans.

AFP via Getty Images

At 9:30 a.m., The number of flights that have been delayed or canceled more than doubled on Thursday.

As the National Weather Service issued a hazardous travel warning for the Great Plains due to the heavy snowfall and winds, airlines began giving waivers for passengers to change their flights for free.

More than 200 flights were canceled and 41 were delayed at Chicago O'Hare International, which is the hardest hit airport so far.

As of 9 a.m., Denver International Airport had 156 and 38 delayed departures and 186 canceled and 26 delayed arrivals.

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In anticipation of the storm, several state governors have issued states of emergency, with Kentucky Gov. Andy Beshear warning that the storm was going to be dangerous and urging residents to stay indoors. There are winter storm warnings and advisories for cities in the Great Plains, Midwest and Northeast.

What To Watch For

The storm is expected to bring winds up to 55 mph in places like Chicago on Thursday and Friday. There is a chance that places from Kansas City to Michigan will be hit by a bomb cyclone. Accuweather warned of poor driving conditions in the Great Plains from Oklahoma to Minnesota. A storm on Friday is expected to bring heavy rain and wind to New England and New York, followed by freezing temperatures, which could cause a sheet of ice on the roads. According to the Weather Channel, the Great Lakes states could get as much as a foot of snow, while Buffalo could get up to three feet of snow.

What to know about travel warnings and how to change an airplane ticket are topics covered in this winter storm.

The winter storm is morphing into a bomb cyclone.

Forecasters warn of a powerful winter storm that will bring heavy snow.