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Dangerous Storms to Threaten Ohio Valley, I-95 Wednesday

The outbreak of severe weather will continue on Wednesday and will begin to affect part of the Northeast, while the threat of violent storms continues in the South and Midwest.

Travel along stretches of I-20, I-40, I-70, I-77, I-80, I-81 and I-95 could be hazardous at times.

A nearly stationary storm system over the Upper Midwest will continue to push warm, moist air across the Southeastern and Ohio Valley states on Wednesday and will begin to push warm, moist air across the mid-Atlantic.

The threat of violent thunderstorms on Wednesday will span from northern Florida to southeastern Alabama, much of Georgia, the Carolinas, Virginia, West Virginia, Maryland and Ohio. However, depending on how successful the push of warm air is, severe thunderstorms can also reach into Delaware, southeastern Michigan, southern New Jersey and portions of Pennsylvania Wednesday afternoon.

During Wednesday evening, advancing warm, humid air can bring the risk of severe weather into portions of New York state, the balance of Pennsylvania and New Jersey, as well as southwestern New England.

According to Northeast Weather Expert Dave Dombek, "The main threat of severe weather in the Northeast will be from flash flooding and locally damaging wind gusts."

Some areas have the potential to receive more than 4 inches of rain, factoring in rainfall from earlier in the week.

Enough rain and poor visibility can occur to disrupt flights at major airports from Detroit to Pittsburgh, New York City, Philadelphia, Baltimore and Washington, D.C., on Wednesday.

"A few of the storms will also bring the potential for large hail, while a handful of the smallest storms could produce a tornado," Dombek said.

For some storm-weary people in the South, this will be the second or third day in a row with the potential for damaging thunderstorms.

"Wednesday has the potential to be the worst day of the outbreak for people in Virginia, the Carolinas and Georgia," Kottlowski said. "Storms that erupt will bring damaging winds, large hail and isolated tornadoes."

The number of storms will be decidedly less numerous and less intense over much of Alabama, Tennessee and Mississippi. Part of this area may have no storms at all.

During Thursday into Saturday, the large storm stalled over the Midwest is forecast to weaken gradually and lift northward into Canada.

However, this slow process may allow another round of thunderstorms to fire along the Atlantic Seaboard on Thursday from New England to Florida. Should a disturbance rotate in during the afternoon and evening hours, the thunderstorms could become locally severe.

Chilly showers over the Midwest are forecast to become less extensive moving forward into the weekend as the old storm diminishes. There is just the chance of a brief shower for Derby day at Churchill Downs.