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Flash Flood Warning

Flash Flood Warning
DCC001-MDC033-VAC013-059-510-610-282215-
/O.NEW.KLWX.FF.W.0025.170728T1918Z-170728T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Baltimore MD/Washington DC
318 PM EDT FRI JUL 28 2017

The National Weather Service in Sterling Virginia has issued a

* Flash Flood Warning for...
  The southeastern District of Columbia...
  West central Prince Georges County in central Maryland...
  Southern Arlington County in northern Virginia...
  The City of Falls Church in northern Virginia...
  East central Fairfax County in northern Virginia...
  The City of Alexandria in northern Virginia...

* Until 615 PM EDT

* At 318 PM EDT, Doppler radar and automated rain gauges indicated
  thunderstorms producing heavy rain across the area. One to two
  inches of rain has already fallen. Additional rainfall amounts of
  one to two inches are possible. Flash flooding is expected to
  begin shortly.

* Some locations that may experience flooding include...
  Arlington, Alexandria, Annandale, Springfield, Vienna, Falls
  Church, Huntington, Coral Hills, Mantua, National Harbor, Reagan
  National Airport, Crystal City, RFK Stadium, Nationals Park, Burke,
  Landover, Lincolnia, Franconia, Oxon Hill and Merrifield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 3879 7695 3879 7726 3890 7725 3886 7704
      3893 7696 3893 7687

$$

HSK



Short Term Forecast

Short Term Forecast
National Weather Service Baltimore MD/Washington DC
302 PM EDT FRI JUL 28 2017

DCZ001-MDZ013-VAZ053-054-281930-
District of Columbia-Prince Georges-Fairfax-Arlington/Falls
Church/Alexandria-
302 PM EDT FRI JUL 28 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE SOUTHEASTERN
DISTRICT OF COLUMBIA...WEST CENTRAL PRINCE GEORGES...SOUTHERN
ARLINGTON...AND CENTRAL FAIRFAX COUNTIES...THE CITY OF FAIRFAX...THE
CITY OF FALLS CHURCH AND THE CITY OF ALEXANDRIA...

At 301 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Fairfax to Reagan National Airport.
Movement was northeast at 15 mph.

Heavy rainfall of one to two inches can be expected.

Locations impacted include...
Arlington, Alexandria, Annandale, Springfield, Fairfax, Vienna, Falls
Church, Huntington, Coral Hills, Mantua, National Harbor, Reagan
National Airport, Crystal City, Nationals Park, Burke, Oakton,
Lincolnia, Franconia, Oxon Hill and Merrifield.

Heavy rainfall is occurring with these storms, and may cause ponding
of water on roadways and cause small streams to go out of their
banks. Be alert for standing water and hydroplaning.

LAT...LON 3879 7701 3879 7703 3881 7702 3882 7703
      3885 7702 3884 7705 3881 7704 3881 7703
      3879 7704 3881 7737 3890 7732 3888 7705
      3886 7703 3886 7702 3888 7704 3887 7689
TIME...MOT...LOC 1901Z 221DEG 14KT 3886 7732 3884 7703

$$

BAJ




Flash Flood Watch

Flood Watch
National Weather Service Baltimore MD/Washington DC
159 PM EDT Fri Jul 28 2017


DCZ001-MDZ003>006-011-013-014-016>018-501>508-VAZ027>031-038>040-
050>057-501-502-505>507-WVZ050>053-055-501>504-290200-
/O.CON.KLWX.FF.A.0006.000000T0000Z-170729T1800Z/
/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-Extreme Western Allegany-
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-Western Grant-Eastern Grant-
Western Mineral-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, Frostburg, 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,
Bayard, Mount Storm, Petersburg, Elk Garden, Antioch, Keyser,
New Creek, Ridgeville, Russelldale, Headsville, and Fort Ashby
159 PM EDT Fri Jul 28 2017

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY
AFTERNOON...

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, Extreme Western Allegany, 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 Grant, Eastern
  Mineral, Hampshire, Hardy, Jefferson, Morgan, Western Grant,
  and Western Mineral.

* Through Saturday afternoon

* Low pressure will develop over the Mid Atlantic today and move
  slowly off the coast through Saturday. Radar estimates over 3
  inches fell Friday morning in Montgomery County. This system
  will have the potential to bring 3 to 5 more inches of rain to
  the region through Saturday afternoon. Thunderstorms could cause
  locally higher rainfall amounts.

* Heavy rainfall may result in rapid rises in streams and
  creeks. This could quickly result in flooding...especially in
  low lying and poor drainage areas.

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.

&&

$$



Flash Flood Warning

Flash Flood Statement
National Weather Service Baltimore MD/Washington DC
140 PM EDT FRI JUL 28 2017

DCC001-MDC033-281945-
/O.CON.KLWX.FF.W.0024.000000T0000Z-170728T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
District of Columbia DC-Prince Georges MD-
140 PM EDT FRI JUL 28 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 PM EDT FOR THE
NORTHERN DISTRICT OF COLUMBIA AND NORTHERN PRINCE GEORGES COUNTIES...

At 139 PM EDT, Doppler radar and automated rain gauges indicated
that heavy rain had fallen over the area. Over two inches has fallen
in portions of DC and Prince Georges County. Flooding has already
been reported along Rock Creek, and the flood wave will continue
moving downstream. Heavy rain still continues in northern Prince
Georges County.

Some locations that will experience flooding include...
Arlington, Bowie, College Park, Greenbelt, Langley Park, Beltsville,
Bladensburg, Byrd Stadium, Howard University, Gallaudet University,
Fort Totten, Laurel, Landover, Hyattsville, Takoma Park, East
Riverdale, Adelphi, New Carrollton, Mitchellville and Chevy Chase.

This includes flood prone locations
Rhode Island Ave NE between 2nd and Capitol...
Beach Dr from Broad Branch Rd to Piney Branch Pkwy...
Route 1 at Ritz Way...
Right lanes of US 50 just west of exit 13...
and Contee Road at Bear Branch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 3894 7669 3893 7696 3886 7704 3890 7707
      3890 7709 3893 7712 3900 7704 3897 7701
      3898 7699 3899 7699 3913 7689 3909 7683
      3907 7684 3903 7675 3898 7670

$$

JE



Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Baltimore MD/Washington DC
130 PM EDT Fri Jul 28 2017

ANZ530>543-DCZ001-MDZ011-013-014-016>018-508-VAZ052>057-291730-
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-
130 PM EDT Fri Jul 28 2017

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...This Afternoon and Tonight

A Flash Flood Watch is in effect through Saturday afternoon.
Showers and thunderstorm with heavy rain are expected. Flash
flooding is likely. Gusty winds or an isolated tornado are
possible as well, including over the tidal Potomac and Maryland
portion of the Chesapeake Bay.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

A Flash Flood Watch continues through Saturday afternoon.

A Gale Warning may be needed for portions of the waters Saturday
afternoon through Saturday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed through Saturday.

$$



U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
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