The National Weather Service has issued a flash flood watch that will be in effect until late Monday night. The heaviest rains will occur between 5 and 9 p.m.
From the NWS:
SHOWERS AND THUNDERSTORMS WILL INCREASE IN COVERAGE THIS
AFTERNOON AND CONTINUE THROUGH THROUGH MOST OF TONIGHT.
SOME OF THE STORMS WILL CONTAIN TORRENTIAL DOWNPOURS, WHICH MAY LEAD TO FLASH FLOODING.
AVERAGE RAINFALL AMOUNTS BETWEEN ONE TO TWO INCHES ARE EXPECTED…BUT LOCALIZED AMOUNTS IN EXCESS OF THREE
INCHES ARE POSSIBLE IN HEAVIER THUNDERSTORMS.
RAINFALL RATES AROUND ONE TO TWO INCHES PER HOUR ARE EXPECTED IN HEAVIER THUNDERSTORMS. RECENT RAINFALL HAS SATURATED SOILS WHICH WILL ALSO INCREASE THE THREAT FOR FLASH FLOODING DURING THIS TIME.
HEAVY RAINFALL IN SHORT PERIODS OF TIME MAY CAUSE RAPID RISES ON
CREEKS AND STREAMS AS WELL AS FLASH FLOODING IN URBAN AREAS.
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.
It’s going to be a cold and rainy weekend in Fairfax County, thanks to Tropical Storm Ophelia. Tracking to make landfall in North Carolina today (Friday), the storm is expected to reach Northern Virginia tonight.
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