Storms hit the U.S. Northeast Thursday, leaving at least one person dead and knocking out power to hundreds of thousands of residents.
About 900 flights have been canceled due to bad weather. New York's LaGuardia Airport reported the maximum number of cancellations, with 162 flights grounded while many flights were delayed at airports in Chicago, Philadelphia, Washington, DC, Baltimore and Boston, the Federal Aviation Administration said.
Severe thunderstorms accompanied by heavy downpour are expected to hit the Midwest, New York City and the Northeast Friday, forecasters have said.
The National Weather Service issued thunderstorm warnings in Delaware, Maryland, New Jersey, Kentucky, Virginia, Arkansas and several other points that lie in between.
In Pennsylvania, a woman died in her car, which was crushed under a tree, according to CNN.
"The risk for widespread damaging winds will increase from midday to mid-afternoon from Indiana and Ohio across Pennsylvania, southeast New York, into western Massachusetts and Connecticut," the U.S. Storm Prediction Center in Norman, Okla., said.
The weather service has warned of possible tornadoes ripping through Elmira, N.Y., and Brookville, Pa.