The National Weather Service has issued a Flash Flood Watch for Fairfax County and most of the Metropolitan Washington, D.C. area through late Tuesday night.
Heavy rain is expected to continue off and on through this evening, which could result in flooding, says the NWS/
A Flash Flood Watch means conditions could develop leading to flooding.
From the NWS:
* AT 1139 AM EDT…EMERGENCY MANAGEMENT REPORTED FLASH FLOODING FROM VERY HEAVY RAIN. RADAR ESTIMATES THAT UP TO 2 INCHES OF RAIN HAVE ALREADY FALLEN ACROSS PORTIONS OF THE WARNED AREA. ADDITIONAL RAINFALL AMOUNTS OF UP TO 1 INCH CAN BE EXPECTED.EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS…URBAN AREAS…HIGHWAYS…STREETS…UNDERPASSES AND OTHER DRAINAGE AREAS AND LOW LYING SPOTS.