A flash flood watch has been issued for much of the Tri-State Area on Monday. It takes effect at 2 p.m. and lasts until at least midnight. It's a First Alert Weather Day, as we track downpours, thunderstorms and the enhanced risk of flash flooding across portions of New Jersey.

There is a slight chance, about 15%, that rainfall will exceed flash flood guidance with some isolated areas possibly getting up to 7 inches of rain.

Excessive rainfall could lead to flash flooding as showers and thunderstorms move across the Lehigh Valley and eastern Pennsylvania on Monday afternoon and night.