Flash flooding hit parts of the US Northeast and Mid-Atlantic on Thursday after repeated storms dumped heavy rain across the region, triggering water rescues in New Jersey and flooding near Newark Liberty International Airport. More storms were expected into early Friday morning, some potentially severe with damaging wind gusts and perhaps a tornado, while additional rainfall could raise the flood risk in areas already saturated by Thursday’s rain.

More than 38 million people from New York City to Washington, D.C., are bracing for severe weather on Thursday.

Rounds of storms are raising the risk of flash flooding in already-soaked parts of the Northeast and Mid-Atlantic on Thursday.