Major Winter Storm to Slam the Midwest Then Move East

A developing winter storm will bring heavy snow to parts of the Midwest.

— -- With a major winter storm set to hit parts of the Midwest and Northeast, delivering a significant amount of snow that could affect travel across the country to start the week, airlines are already starting to cancel flights.

As of 11 p.m. ET Saturday, airlines had canceled 1,048 flights scheduled for Sunday. Of those, 445 were flights out of Chicago's O'Hare International Airport.

The developing winter storm was moving through the southern and central Plains today, bringing a mixture of snow, sleet, freezing rain, and rain to the region.

Winter storm warnings, watches, and advisories were currently in effect around midday Saturday from the central Plains to New England in anticipation of the winter storm on the way.

The upcoming storm was expected to strengthen Saturday evening with a large area of heavy snow developing across the central Plains, and eventually through the Midwest Saturday night and early Sunday morning.

The heaviest snow is expected to fall generally along and north of Interstate 80, with a wintry mix and rain expected for areas south of there.

From Washington, D.C. to Philadelphia, mixing with rain and sleet will lead to lower snow totals. However from New York City up to Boston, significant amounts of snow with an icy and dangerous Monday morning commute expected.