Heavy thunderstorms sweeping across the eastern U.S. have prompted flood alerts for tens of millions of residents, with forecasters warning of potential flash flooding from the nation’s capital region through New England. The system is expected to bring intense rainfall, raising concerns about localized flooding and travel disruptions. Authorities urge residents in affected areas to stay informed and prepare for possible water-related hazards. The alert covers a broad stretch of the Northeast, including major metropolitan areas.


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.