planes
As winter weather begins to descend upon Chicago with rain, sleet and snow, more than 1,000 flights have been canceled in and out of Chicago, according to the flight tracking service FlightAware.

As of 12:50 p.m. CT, 1,039 flights to and from Chicago O'Hare International Airport, big hubs for American and United airlines, had been canceled. At crosstown airport Chicago Midway International Airport, a big hub for Southwest Airlines, nearly 90 flights were canceled.

The National Weather Service tweeted about the severe conditions in Chicago on Saturday.




"The trends for a few hour period of heavy snowfall this evening with strong winds continue to increase," The National Weather Service Chicago wrote. "This highlights expectations of timing for the Chicago metro area. Plan for impacted travel during the evening due to the period of heavy snow and reduced visibility."

In Dallas, where a cold front has rolled in with a winter advisory that was in effect until noon local time Saturday, 63 flights arriving at Dallas Fort Worth and 13 departing were also canceled as of 12:50 p.m. CT.