Source AP ©

Snowstorm grounds flights at Chicago airports

Hundreds of airline flights were grounded, a major league baseball game was called and six people were killed in accidents on icy roads as yet another spring snowstorm hit the upper Midwest.

North Dakota and South Dakota both measured about 7 inches (18 centimeters), and 5 inches (13 centimeters) fell in Madison, Wisconsin on Wednesday.

More than 500 flights were canceled at Chicago's O'Hare International Airport because of poor visibility, said city aviation spokesman Gregg Cunningham.

Milwaukee's General Mitchell International Airport also had delays and cancellations.

Six people were killed in two separate accidents in Iowa, including a woman and her two children when their minivan collided with another minivan in the state's south-central region.

Wednesday's Houston Astros at Chicago Cubs game was postponed because of the storm. During the weekend, heavy snow wiped out scheduled Angels-Indians games for four straight days at Cleveland, and their contest was finally moved to Milwaukee's enclosed field.