The National Weather Service has issued a Flash Flood Watch for Reston, Northern Virginia and most of the DC area for Wednesday.
The watch goes into effect at 4 p.m. and will remain in effect through the evening
The NWS says thunderstorms will increase in late afternoon and early evening and their is the potential for rainfall rates of 1-2 inches per hour in some areas.
From the NWS:
LOCALLY EXCESSIVE RAINFALL COULD CAUSE RAPID FLOODING OF SMALL STREAMS AS WELL AS LOW-LYING AND URBANÂ AREAS.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS AÂ VERY DANGEROUS SITUATION.
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED.