Wednesday's forecast: Rainy Great Lakes, Mid-Atlantic

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A wet Wednesday is forecast for the Great Lakes and Ohio Valley. By the evening and into Thursday, drenching rain could lead to flooding in the Mid-Atlantic and Central Appalachians.

Midwest, East: A soggy day is on tap for the Great Lakes and Ohio Valley. By the evening and into Thursday, heavy rain will pelt the Mid-Atlantic and central Appalachians, where flooding is a concern.

West: The northern Rockies will be warm and dry Wednesday while temperatures stay cool over the Pacific Northwest. A few afternoon showers and thunderstorms are possible over portions of the Southwest and southern Rockies.

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Weather history for Sept. 28: In 1917, a hurricane hit Pensacola, Fla., dropping the city's barometric pressure to an all-time low of 28.51 inches. In 1984, Washington, D.C., had its coolest September day on record, with a high of only 52 degrees.