The U.S. National Weather Service warned of an unusually expansive and long-duration winter storm that will bring widespread, heavy ice accumulation in the southeast U.S. and cited "crippling to locally catastrophic impacts.

More than 8,000 flights have been canceled across the U.S. as a major storm expected to wreak havoc across much of the country bears down

Airlines have canceled more than 13,000 U.S. flights for Saturday and Sunday as a massive winter storm is forecast to bring a mix of ice, snow and frigid conditions to many parts of the country this weekend.

By Rajesh Kumar Singh and Doyinsola Oladipo NEW YORK, Jan 22 (Reuters) - U.S. airlines ‌have ​rolled out sweeping travel waivers as a ‌winter storm, forecast to spread heavy snow, sleet and dangerous ice across two dozen states,

Flight cancellations are continuing to mount as the U.S. is being hit with dangerous winter weather​ from a storm moving across the country.

Massive winter storm triggers over 15,000 flight disruptions as U.S. braces for historic winter weather with more than 190 million Americans in the storm's path.

Two advisories from the NWS warn people to avoid travel while because of storms and ice storms in multiple states.

The snowfall from a winter storm is expected to impact much of the nation Friday and has triggered thousands of flight cancellations.