Severe weather is expected to bring subzero temperatures the northern Plains as soon as Thursday, then reach the Mississippi Valley, the Northeast and the Ohio Valley by Sunday.

Around 12,000 flights across the U.S. set to take off over the weekend were cancelled as a monster storm started to wreak havoc Saturday across much of the country and threatened to knock out power fo...

More than 100,000 customers were without power in Tennessee and Texas Sunday morning, with another 100,000 in Mississippi and more than 84,000 in Louisiana also without electricity, according to the o...