The Northeast will be the target of another round of drenching thunderstorms into Wednesday night, raising urban flooding concerns across the region.
Unlike Tuesday when much of the I-95 corridor stayed dry, thunderstorms with torrential rain erupted over the Appalachian Mountains Wednesday afternoon, and are forecast to reach New York City, Philadelphia, Baltimore and Washington, D.C., during Wednesday night and will continue into Thursday morning in some locations.
According to AccuWeather.com Senior Meteorologist Kristina Pydynowski, "The storms and their downpours could translate to a slow commute with possible flight delays."
Meanwhile, some areas from Ohio to upstate New York were being hit by heavy storms for a second day in a row, adding to the rain that fell on Tuesday.
More than 4 inches of rain fell on part of the Cleveland metro area from Tuesday afternoon into Wednesday morning. Flooding forced some busy roads to close.
One inch of rain fell in 15 minutes in State College, Pennsylvania, during Wednesday afternoon, which resulted in street flooding.
An abundance of moisture will be readily available for these storms to tap into, giving them the potential to drop over an inch of rain in under an hour.
Rain falling at such a fast rate can quickly overwhelm storm drains and catch basins, especially where multiple thunderstorms track over the same area in a short amount of time. The rain can linger long enough to also cause flash flooding of small streams.
Thunderstorms of this nature that follow in quick succession of each other are also refereed to as training thunderstorms.
Keep in mind that moving water can be dangerous to drive through. If you come across a flooded roadway you should not attempt to drive through it.
Not only will thunderstorms bring the threat of flooding downpours, but a few of the stronger storms may also produce damaging winds.
While not expected to be widespread, very isolated wind gusts up to 60 mph can occur in parts of the region, which are strong enough to bring down tree limbs and power lines.
It does not appear at this time like the ingredients will come together for any storms in the Northeast to produce a tornado on Wednesday.
Looking ahead to Thursday, a cold front moving through the region will push many of these thunderstorms off the East Coast.
However, a few heavy storms may still linger around southern New England in the morning, including Boston and Providence, Rhode Island.
Complete dry weather is not expected to make a full return to the Northeast until Saturday when high pressure builds over the region.
Senior Meteorologist Alex Sosnowski contributed content to this story.
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Greensboro, NC (1992)
Rainfall of 3.87".
Afton, VA (1992)
Dense fog caused a 50 vehicle pile up; two people were killed, and dozens were injured.
Gulf Coast (1927)
Disastrous Mississippi Delta floods left hundreds dead and half a million homeless.