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VALLEY: Flood Watch – MOUNTAINS: Winter Weather Tues Night / Wed AM : 12.8.09 :

Nelson County, Virginia

-A FLOOD WATCH is in Effect for Nelson County late tonight into Wednesday morning. [1]

-A WINTER WEATHER ADVISORY is in effect for the mountainous portions of Western Nelson County Tuesday night until 7 AM Wednesday morning. [2]

Scroll for specific details on each weather event.

FLOOD WATCH
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
106 PM EST TUE DEC 8 2009

FLOOD WATCH NOW IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY
MORNING…

THE FLOOD WATCH IS NOW IN EFFECT FOR

PORTIONS OF MARYLAND…THE DISTRICT OF COLUMBIA AND VIRGINIA…
INCLUDING THE FOLLOWING AREAS…IN MARYLAND…ANNE ARUNDEL…
CALVERT…CARROLL…CHARLES…FREDERICK MD…HARFORD…
HOWARD…MONTGOMERY…NORTHERN BALTIMORE…PRINCE GEORGES…
SOUTHERN BALTIMORE AND ST. MARYS. THE DISTRICT OF COLUMBIA. IN
VIRGINIA…ALBEMARLE…ARLINGTON/FALLS CHURCH/ALEXANDRIA…
CULPEPER…FAIRFAX…FAUQUIER…GREENE…KING GEORGE…
LOUDOUN…MADISON…NELSON…ORANGE…PRINCE
WILLIAM/MANASSAS/MANASSAS PARK…RAPPAHANNOCK…SPOTSYLVANIA AND
STAFFORD.

* A STRONG LOW PRESSURE WILL AFFECT THE AREA TONIGHT. ALTHOUGH
PRECIPITATION MAY BEGIN AS A WINTRY MIX THIS EVENING…WARMER
TEMPERATURES ALOFT WILL CHANGE THE PRECIPITATION TO RAIN
TONIGHT…WITH AN EXTENDED PERIOD OF MODERATE TO HEAVY RAIN
EXPECTED. WIDESPREAD RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE
ANTICIPATED…WITH SOME TOTALS OF UP TO 3 INCHES POSSIBLE…
PARTICULARLY EAST OF INTERSTATE 95 THE RAIN WILL FURTHER MELT
THE EXISTING SNOW ON THE GROUND IN SOME AREAS… ADDING TO THE
RUNOFF. RAINFALL OF THIS AMOUNT WILL BE CAPABLE OF CAUSING
FLOODING OF URBAN AREAS…SMALL STREAMS…AND OTHER POOR
DRAINAGE AND LYING 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.

* * * * * * * * *
WINTER WEATHER ADVISORY

URGENT – WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
933 PM EST TUE DEC 8 2009

MDZ003-VAZ028-036-WVZ051-052-091045-
/O.CON.KLWX.WW.Y.0027.000000T0000Z-091209T1200Z/
WASHINGTON-FREDERICK VA-NELSON-MORGAN-BERKELEY-
INCLUDING THE CITIES OF…HAGERSTOWN…WINCHESTER…MARTINSBURG
933 PM EST TUE DEC 8 2009

…WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
WEDNESDAY…

SNOW AND SLEET WILL MOVE FROM SOUTH TO NORTH ACROSS PORTIONS OF
WESTERN MARYLAND…THE EASTERN WEST VIRGINIA PANHANDLE AND FREDERICK
COUNTY VIRGINIA THROUGH MIDNIGHT. SNOW AND SLEET ACCUMULATIONS OF
1 TO 2 INCHES CAN BE EXPECTED.

PRECIPITATION WILL CHANGEOVER TO SLEET AND FREEZING RAIN AFTER
MIDNIGHT…THEN SWITCH TO PLAIN RAIN BY SUNRISE. UP TO A TENTH OF
AN INCH OF ICE ACCUMULATION FROM FREEZING RAIN MAY RESULT.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW…SLEET AND
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES…AND USE CAUTION WHILE
DRIVING.