The flash flooding risk is significant for urban areas in the Northeast and Mid-Atlantic, including Philadelphia and New York City. Heavy rainfall could overwhelm drainage systems, leading to localized flooding. In the Southeast, repeated rounds of rain may cause flash flooding in coastal areas such as Cape Hatteras and Charleston. Damaging wind gusts and torrential downpours are also possible, particularly in Florida's Big Bend region and Miami. While the severe weather threat is limited, the potential for strong storms and frequent lightning remains a concern.