

000 

WGUS71 KLWX 120245

FFSLWX

DCZ001-MDZ003-004-009-010-013-014-016>018-VAZ026>031-038>042-050>055-

WVZ048>055-120600-



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE BALTIMORE-WASHINGTON

1045 PM EDT SAT AUG 11 2001



A FLASH FLOOD WARNING HAS BEEN ISSUED FOR GRANT COUNTY IN EASTERN 

WEST VIRGINIA VALID UNTIL MIDNIGHT. A THUNDERSTORM WITH VERY HEAVY 

RAINS WAS STATIONARY OVER THE SOUTHWEST PART OF THE COUNTY SINCE 

JUST BEFORE 9 PM. RADAR PRECIPITATION ESTIMATES INDICATE RAINFALL 

RATES OF 2 TO 3 INCHES PER HOUR. THAT AMOUNT WILL PRODUCE LOCAL 

FLOODING OF SMALL STREAMS CREEKS AND ROADS. RESIDENTS IN THE AREA 

SHOULD AVOID FLOOD PRONE AREAS AND SEEK HIGHER GROUND. FLOODING IS 

ESPECIALLY DIFFICULT TO DETECT AT NIGHT.



ELSEWHERE FLASH FLOOD WARNINGS HAVE EXPIRED OVER NORTHERN VIRGINIA 

AND CENTRAL MARYLAND INCLUDING THE WASHINGTON METRO AREA. SHOWERS 

AND EVEN A THUNDERSTORM ARE STILL A POSSIBILITY OVERNIGHT BUT THERE 

HAS BEEN AN OVERALL DIMINISHING TREND WHICH HAS LESSENED THE THREAT 

OF ADDITIONAL FLOODING. 



EARLIER TORRENTIAL RAINS RESULTED IN EXTENSIVE FLOODING WITH ROAD 

CLOSURES IN PORTIONS OF THE DISTRICT OF COLUMBIA...HOWARD... 

MONTGOMERY...FAIRFAX...PRINCE WILLIAM...FAUQUIER...LOUDOUN...

CULPEPER...CLARKE...FREDERICK VA...AND HAMPSHIRE COUNTIES. IN THESE  

AREAS RAINFALL AMOUNTS OF 2 TO 4 INCHES WAS COMMON AND MOST OF IT 

FALLING IN A 2 TO 3 HOUR PERIOD. 4.01 INCHES WAS MEASURED IN RESTON 

IN JUST 2 HOURS. THIS WAS THE MOST REPORTED THUS FAR BUT EVEN LARGER 

AMOUNTS MAY HAVE OCCURED AND MIGHT BE REPORTED EARLY SUNDAY AS MORE 

PRECIPITATION REPORTS ARE RECEIVED.



THE STORMS DEVELOPED ALONG A STATIONARY FRONT IN A VERY MOIST AND 

UNSTABLE AIR MASS. THIS SITUATION WILL STILL EXIST TOMORROW AND MORE 

SHOWERS AND THUNDERSTORMS ARE A LIKELIHOOD BY SUNDAY AFTERNOON. 

HEAVY RAINS ARE AGAIN A POSSIBILITY.



STAY TUNED TO THE LATEST FORECASTS AND STATEMENTS FROM THE NATIONAL 

WEATHER SERVICE.FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB 

SITE AT HTTP://WWW.NWS.NOAA.GOV/ER/LWX



$$



JLW

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