Arlington and the surrounding D.C. region is under a Flood Watch through midnight tonight.
Forecasters say 3-6 inches of rain has fallen since Wednesday and another 1-3 inches is expected tonight, raising the possibility of flooding. From the National Weather Service:
…FLOOD WATCH IN EFFECT UNTIL MIDNIGHT EDT TONIGHT…
THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS EXPANDED
THE* FLOOD WATCH TO INCLUDE PORTIONS OF MARYLAND…THE DISTRICT OF
COLUMBIA AND VIRGINIA…INCLUDING THE FOLLOWING AREAS…IN
MARYLAND…ANNE ARUNDEL…CALVERT…CHARLES…HOWARD…
MONTGOMERY…PRINCE GEORGES AND ST. MARYS. THE DISTRICT OF
COLUMBIA. IN VIRGINIA…ARLINGTON/FALLS CHURCH/ALEXANDRIA…
CULPEPER…FAIRFAX…GREENE…KING GEORGE…LOUDOUN…
MADISON…NORTHERN FAUQUIER…ORANGE…PRINCE
WILLIAM/MANASSAS/MANASSAS PARK…RAPPAHANNOCK…SOUTHERN
FAUQUIER…SPOTSYLVANIA AND STAFFORD.* UNTIL MIDNIGHT EDT TONIGHT
* THREE TO SIX INCHES OF RAIN HAS ALREADY FALLEN SINCE WEDNESDAY
ACROSS THE GREATER WASHINGTON DC METRO AREA…CENTRAL MARYLAND
AND THE NORTHERN PIEDMONT REGION OF VIRGINIA. STEADY MODERATE TO
HEAVY RAIN CURRENTLY OVER NORTHERN VIRGINIA WILL SLOWLY SHIFT
SOUTHWARD THROUGH MIDNIGHT.* ADDITIONAL AMOUNTS OF ONE TO LOCALLY THREE INCHES ARE POSSIBLE
THROUGH THIS EVENING. THIS AMOUNT OF RAINFALL WOULD CAUSE
FLOODING OF SMALL STREAMS AND URBAN AREAS.PRECAUTIONARY/PREPAREDNESS ACTIONS…
A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE
FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE
PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.