Tens of millions of people were bracing Sunday for a massive winter storm forecast to bring the heaviest snowfall and coldest temperatures in over a decade to parts of the country.

The developing storm system is forecast to bring heavy snow, crippling ice and severe weather across the country through the next three days.

Seven states declare emergencies as 63 million hit by arctic blast and travel chaos - Hundreds of flights have been canceled throughout the US amid the dangerous winter storm

Air travel is taking a hit today, with 1,493 flights canceled within, into or out of the United States, according to FlightAware. Kansas City and St. Louis Lambert international airports report ...

Here's the latest information on how the system's snow and ice are affecting tens of millions in the central and eastern U.S.