Heavy thunderstorms sweeping from the Mid-Atlantic to New England have prompted federal flood warnings for tens of millions of residents, with authorities urging caution as rainfall intensifies overnight. The National Weather Service has flagged widespread flash flooding risks along the storm’s path, affecting major metropolitan areas from the capital region to the Northeast coast. Residents in the warned zones are advised to monitor local updates as conditions may rapidly deteriorate. Emergency preparations, including evacuation plans in vulnerable areas, are being emphasized as the system moves through.
Federal forecasters issued flood alerts for 39 million people late Saturday into Sunday as a line of thunderstorms developed from Washington, D.C., to New Haven, Connecticut.
