(Reuters) - A winter storm dumping snow across the U.S. Midwest on Friday forced the cancellation of more than 600 flights at Chicago's O'Hare International Airport, while slick roads and poor visibility snarled traffic across the region.
The storm was expected to drop 1 to 8 inches of snow from the Dakotas to the lower Great Lakes, according to weather.com, with Chicago among the hardest hit among the big cities.
Up to 7 inches of snow was expected in Chicago, where Southwest Airlines also canceled all of its flights from 2 p. m. to 5 p. m. at Midway Airport and delayed flights scheduled for 5 p. m. to 7 p. m., according to the Chicago aviation department.
Milwaukee and Cleveland both were expected to be hit with up to 5 inches of snow. Several smaller school districts outside of Milwaukee have canceled after-school programs.
The storm dropped about an inch of snow Friday morning in the Twin Cities area, where there were reports of hundreds of minor accidents on slick roads and long morning rush hour delays. Snow fall totals were heavier south of the Twin Cities.
Reports of 4 to 6 inches were common from far southern Minnesota, across northeast Iowa and southwest Wisconsin, the National Weather Service said.
The snow is expected to push into the Northeast, with up to six inches of the white stuff expected from Pennsylvania through central Maine Saturday, and up to four inches in New York City, weather.com said.
In Washington state, which has seen unusually heavy snow Tuesday through Thursday, two climbers and two campers are missing in Mount Rainier National Park. Searches were suspended Friday afternoon because of the weather, which includes 40 mph winds, poor visibility, and thick fog.
The Purge Sound region continued to see scattered power outages Friday, affecting about 275,000 customers. Seattle is preparing for possible flooding, with crews clearing storm drains of snow and debris.