With heavy rain expected Tuesday, the National Weather Service has issued a flash flood watch for Fairfax County and most of the Washington, D.C. area.
The watch, which means conditions may develop that could lead to flash flooding, is in effect from 2 p.m. Tuesday to 2 a.m. Wednesday.
From the NWS:
THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A FLASH FLOOD WATCH FOR PORTIONS OF MARYLAND… THE DISTRICT OF COLUMBIA AND NORTHERN VIRGINIA… INCLUDING THE FOLLOWING AREAS… IN MARYLAND… ANNE ARUNDEL… CARROLL… FREDERICK MD… HARFORD… HOWARD… MONTGOMERY… NORTHERN BALTIMORE… PRINCE GEORGES AND SOUTHERN BALTIMORE. THE DISTRICT OF COLUMBIA. IN NORTHERN VIRGINIA… ARLINGTON/FALLS CHURCH/ALEXANDRIA… FAIRFAX… LOUDOUN AND PRINCE WILLIAM/MANASSAS/MANASSAS PARK.
* THROUGH LATE TONIGHT
* HEAVY RAIN HAS ALREADY FALLEN OVER PORTIONS OF NORTHERN VIRGINIA… CENTRAL MARYLAND… AND WASHINGTON DC TODAY. THERE IS THE POSSIBILITY THAT MORE HEAVY RAIN WILL FALL WITH THUNDERSTORMS THIS AFTERNOON. ANY STORMS THAT FORM WILL HAVE THE POTENTIAL TO PRODUCE FLASH FLOODING.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED.