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Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
514 AM EDT WED SEP 28 2016

ANZ530>543-DCZ001-MDZ011-013-014-016>018-508-VAZ052>057-290915-
CHESAPEAKE BAY NORTH OF POOLES ISLAND MD-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD-
CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD-
TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
CHESTER RIVER TO QUEENSTOWN MD-EASTERN BAY-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
PATUXENT RIVER TO BROOMES ISLAND MD-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH
ISLAND-DISTRICT OF COLUMBIA-SOUTHERN BALTIMORE-PRINCE GEORGES-
ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT-SOUTHEAST HARFORD-
PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX-
ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA-
KING GEORGE-
514 AM EDT WED SEP 28 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MARYLAND PORTION OF THE
CHESAPEAKE BAY...TIDAL POTOMAC RIVER...AND ADJACENT COUNTIES IN
CENTRAL MARYLAND AND NORTHERN VIRGINIA AS WELL AS THE DISTRICT OF
COLUMBIA.

.DAY ONE...TODAY AND TONIGHT

A FLASH FLOOD WATCH IS IN EFFECT LATE TONIGHT FOR THE ENTIRE
OUTLOOK AREA. PLEASE REFER TO FLASH FLOOD MESSAGE FOR MORE
DETAILS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THE FLASH FLOOD WATCH CONTINUES THURSDAY THROUGH FRIDAY MORNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

$$



Flash Flood Watch

FLOOD WATCH
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1244 AM EDT WED SEP 28 2016


DCZ001-MDZ003>006-011-013-014-016>018-502>508-VAZ027>031-038>040-
050>057-501-502-505>507-WVZ050>053-055-504-281245-
/O.CON.KLWX.FF.A.0011.160929T0600Z-160930T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DISTRICT OF COLUMBIA-WASHINGTON-FREDERICK MD-CARROLL-
NORTHERN BALTIMORE-SOUTHERN BALTIMORE-PRINCE GEORGES-ANNE ARUNDEL-
CHARLES-ST. MARYS-CALVERT-CENTRAL AND EASTERN ALLEGANY-
NORTHWEST MONTGOMERY-CENTRAL AND SOUTHEAST MONTGOMERY-
NORTHWEST HOWARD-CENTRAL AND SOUTHEAST HOWARD-NORTHWEST HARFORD-
SOUTHEAST HARFORD-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-
GREENE-MADISON-RAPPAHANNOCK-ORANGE-CULPEPER-
PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX-
ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA-
KING GEORGE-NORTHERN FAUQUIER-SOUTHERN FAUQUIER-WESTERN LOUDOUN-
EASTERN LOUDOUN-NORTHERN VIRGINIA BLUE RIDGE-HAMPSHIRE-MORGAN-
BERKELEY-JEFFERSON-HARDY-EASTERN MINERAL-
INCLUDING THE CITIES OF...WASHINGTON...HAGERSTOWN...FREDERICK...
BALLENGER CREEK...ELDERSBURG...WESTMINSTER...REISTERSTOWN...
COCKEYSVILLE...BALTIMORE...BOWIE...SUITLAND-SILVER HILL...
CLINTON...COLLEGE PARK...GREENBELT...LAUREL...CAMP SPRINGS...
GLEN BURNIE...ANNAPOLIS...SEVERN...SOUTH GATE...SEVERNA PARK...
ARNOLD...ODENTON...ST. CHARLES...WALDORF...LEXINGTON PARK...
CALIFORNIA...CHESAPEAKE BEACH...HUNTINGTOWN...DUNKIRK...
NORTH BEACH...LUSBY...PRINCE FREDERICK...CUMBERLAND...
GERMANTOWN...DAMASCUS...BETHESDA...ROCKVILLE...GAITHERSBURG...
SILVER SPRING...LISBON...COLUMBIA...ELLICOTT CITY...
JARRETTSVILLE...ABERDEEN...STRASBURG...WOODSTOCK...
MOUNT JACKSON...NEW MARKET...WINCHESTER...LURAY...SHENANDOAH...
STANLEY...FRONT ROYAL...BERRYVILLE...STANARDSVILLE...MADISON...
ORANGE...GORDONSVILLE...CULPEPER...DALE CITY...MANASSAS...
WOODBRIDGE...LAKE RIDGE...MONTCLAIR...RESTON...HERNDON...
ANNANDALE...CENTREVILLE...CHANTILLY...MCLEAN...FRANCONIA...
ARLINGTON...ALEXANDRIA...FALMOUTH...FREDERICKSBURG...DAHLGREN...
WARRENTON...TURNBULL...PURCELLVILLE...LEESBURG...ASHBURN...
STERLING...BIG MEADOWS...ROMNEY...PAW PAW...MARTINSBURG...
CHARLES TOWN...SHEPHERDSTOWN...MOOREFIELD...ANTIOCH...KEYSER...
NEW CREEK...RIDGEVILLE...RUSSELLDALE...HEADSVILLE...FORT ASHBY
1244 AM EDT WED SEP 28 2016

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
FRIDAY MORNING...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF MARYLAND...THE DISTRICT OF COLUMBIA...VIRGINIA AND
  WEST VIRGINIA...INCLUDING THE FOLLOWING AREAS...IN MARYLAND...
  ANNE ARUNDEL...CALVERT...CARROLL...CENTRAL AND EASTERN
  ALLEGANY...CENTRAL AND SOUTHEAST HOWARD...CENTRAL AND
  SOUTHEAST MONTGOMERY...CHARLES...FREDERICK MD...NORTHERN
  BALTIMORE...NORTHWEST HARFORD...NORTHWEST HOWARD...NORTHWEST
  MONTGOMERY...PRINCE GEORGES...SOUTHEAST HARFORD...SOUTHERN
  BALTIMORE...ST. MARYS AND WASHINGTON. THE DISTRICT OF
  COLUMBIA. IN VIRGINIA...ARLINGTON/FALLS CHURCH/ALEXANDRIA...
  CLARKE...CULPEPER...EASTERN LOUDOUN...FAIRFAX...FREDERICK VA...
   GREENE...KING GEORGE...MADISON...NORTHERN FAUQUIER...NORTHERN
  VIRGINIA BLUE RIDGE...ORANGE...PAGE...PRINCE
  WILLIAM/MANASSAS/MANASSAS PARK...RAPPAHANNOCK...SHENANDOAH...
  SOUTHERN FAUQUIER...SPOTSYLVANIA...STAFFORD...WARREN AND
  WESTERN LOUDOUN. IN WEST VIRGINIA...BERKELEY...EASTERN
  MINERAL...HAMPSHIRE...HARDY...JEFFERSON AND MORGAN.

* FROM LATE TONIGHT THROUGH FRIDAY MORNING

* AN UPPER LEVEL LOW PRESSURE OVER THE WESTERN GREAT LAKES WILL
  DROP SOUTHWARD INTO THE OHIO VALLEY WEDNESDAY INTO THURSDAY. AS
  THE UPPER LOW DROPS SOUTHWARD...LOW LEVEL FLOW IS FORECAST TO
  RAPIDLY INCREASE OVER THE AREA WEDNESDAY NIGHT RESULTING IN
  SIGNIFICANT MOISTURE TRANSPORT INTO THE AREA. PERIODS OF HEAVY
  RAINFALL ARE ANTICIPATED LATE WEDNESDAY NIGHT THROUGH THURSDAY
  NIGHT ACROSS THE CENTRAL MID-ATLANTIC. THE PERIOD OF GREATEST
  RAIN RATES IS EXPECTED LATE WEDNESDAY NIGHT THROUGH THURSDAY
  AFTERNOON. WIDESPREAD RAINFALL AMOUNTS OF 3 TO 5 INCHES ARE
  EXPECTED WITH LOCALIZED HIGHER TOTALS IN AREAS OF REPEATED
  ACTIVITY. ADDITIONALLY...EASTERN SLOPES OF MOUNTAINS SUCH AS
  THE NORTHERN BLUE RIDGE AND CATOCTIN MOUNTAIN ALSO HAVE AN
  INCREASED RISK FOR HIGHER RAIN TOTALS.

* POTENTIAL EXISTS FOR FLASH FLOODING OF SMALL STREAMS...CREEKS
  AND URBAN AREAS ESPECIALLY IN AREAS OF REPEATED ACTIVITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$



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Silver Spring, MD 20910
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Page last modified: May 16, 2007
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