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Flash Flood Watch

Flood Watch
National Weather Service Baltimore MD/Washington DC
345 AM EDT Mon Jul 22 2019


DCZ001-MDZ003>006-011-013-014-503>508-VAZ028-031-052>054-505-506-
WVZ051>053-221545-
/O.CON.KLWX.FF.A.0010.190722T1900Z-190723T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
District of Columbia-Washington-Frederick MD-Carroll-
Northern Baltimore-Southern Baltimore-Prince Georges-Anne Arundel-
Northwest Montgomery-Central and Southeast Montgomery-
Northwest Howard-Central and Southeast Howard-Northwest Harford-
Southeast Harford-Frederick VA-Clarke-
Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Western Loudoun-Eastern Loudoun-
Morgan-Berkeley-Jefferson-
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,
Germantown, Damascus, Bethesda, Rockville, Gaithersburg,
Silver Spring, Lisbon, Columbia, Ellicott City, Jarrettsville,
Aberdeen, Winchester, Berryville, Dale City, Manassas,
Woodbridge, Lake Ridge, Montclair, Reston, Herndon, Annandale,
Centreville, Chantilly, McLean, Franconia, Arlington, Alexandria,
Falls Church, Purcellville, Leesburg, Ashburn, Sterling, Paw Paw,
Martinsburg, Charles Town, and Shepherdstown
345 AM EDT Mon Jul 22 2019

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 3 PM EDT THIS
AFTERNOON THROUGH LATE TONIGHT...

The Flash Flood Watch continues for

* Portions of Maryland, The District of Columbia, Virginia, and
  panhandle West Virginia, including the following areas, in
  Maryland, Anne Arundel, Carroll, Central and Southeast Howard,
  Central and Southeast Montgomery, Frederick MD, Northern
  Baltimore, Northwest Harford, Northwest Howard, Northwest
  Montgomery, Prince Georges, Southeast Harford, Southern
  Baltimore, and Washington. The District of Columbia. In
  Virginia, Arlington/Falls Church/Alexandria, Clarke, Eastern
  Loudoun, Fairfax, Frederick VA, Prince
  William/Manassas/Manassas Park, and Western Loudoun. In
  panhandle West Virginia, Berkeley, Jefferson, and Morgan.

* From 3 PM EDT this afternoon through late tonight

* Multiple rounds of showers and thunderstorms capable of
  producing heavy rainfall are likely. Areal average rainfall of 1
  to 2 inches is expected, with isolated totals of 4 inches
  possible. Much of this rain may fall in short periods of time in
  any one given location, resulting in the risk for flash flooding
  this afternoon and tonight.


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.

&&

$$




Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Baltimore MD/Washington DC
500 AM EDT Mon Jul 22 2019

ANZ530>543-DCZ001-MDZ011-013-014-016>018-508-VAZ052>057-231000-
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-
500 AM EDT Mon Jul 22 2019

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 Heat Advisory is in effect for Calvert and St Marys Counties
from 11 AM until 6 PM today.

A Flash Flood Watch is in effect this afternoon through tonight
for the Washington DC and Baltimore MD metro areas. Multiple
rounds of thunderstorms are possible at any given location and
this will cause the potential for flash flooding.

Severe thunderstorms are possible this afternoon and evening.
Damaging wind gusts are the primary threat.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed this afternoon and
evening.

$$



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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