The National Weather Service confirmed two tornadoes touched down in Bucks County, Pennsylvania on Thursday afternoon, just northeast of Philadelphia.
They sent trees falling, debris flying and a thunderous downpour flooded streets and roadways.
One of the tornadoes damaged an auto dealership and a mobile home park.
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Officials said four people were injured at the dealership in Bensalem, and a fifth person was hurt at a nearby business but all injures were considered non-life-threatening.
Thousands of homes lost power and about 1-3 inches of rain fell in a small period of time, prompting flash flood warnings.
Severe weather was a concern along other parts of the east coast, with the weather service issuing warnings in New Jersey, as well.
Additional reporting by the Associated Press.
