Stay dry out there. Has it ever rained like this in DC before?

Here’s the latest from the National Weather Service:

DISTRICT OF COLUMBIA DC-CITY OF ALEXANDRIA VA- CITY OF FAIRFAX VA- CITY OF FALLS CHURCH VA-ARLINGTON VA-FAIRFAX VA- 938 PM EDT SUN MAY 11 2008
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…THE FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT FOR DISTRICT OF COLUMBIA…AND FAIRFAX…ARLINGTON… NORTHERN CITY OF FALLS CHURCH…CITY OF FAIRFAX AND CITY OF ALEXANDRIA COUNTIES…
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AT 938 PM EDT…RADAR INDICATED VERY HEAVY RAIN NEARLY STATIONARY. OVER TWO INCHES OF RAIN HAVE FALLEN AND ADDITIONAL TWO TO THREE INCHES WILL BE POSSIBLE THROUGH 1145 PM.
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FAIRFAX EMERGENCY OPERATIONS CENTER HAVE REPORTED NUMEROUS RESCUES AND ROAD CLOSURES ACROSS THE COUNTY. WATER RESCUES ARE ONGOING IN HERNDON AND IN CHANTILLY.
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A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED. STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED. HOWEVER…ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS IMMEDIATELY.
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BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
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DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. MOVE TO HIGHER GROUND.