An early-week storm threat is expected to affect millions of Americans across the Midwest, as the FOX Forecast Center monitors a flash flood threat.

A Flood Watch has been issued for Arlington and the immediate D.C. area through early Monday. Forecasters say there are concerns about thunderstorms developing later today and producing torrential rainfall,

Showers and thunderstorms have developed this afternoon as a weak disturbance moves through the region. Some thunderstorms could produce brief, heavy rain, with