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Flash Flood Watch

Flood Watch
National Weather Service Baltimore MD/Washington DC
1248 AM EDT Thu Sep 23 2021

District of Columbia-Carroll-Northern Baltimore-Cecil-Southern
Baltimore-Northwest Montgomery-Central and Southeast Montgomery-
Northwest Howard-Central and Southeast Howard-Northwest Harford-
Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria-Eastern
Including the cities of Elkton, Herndon, Arlington, Jarrettsville,
Westminster, Damascus, Silver Spring, Bethesda, Chantilly,
Centreville, Sterling, Reisterstown, Columbia, Ashburn, Germantown,
Leesburg, McLean, Rockville, Alexandria, Falls Church, Reston,
Baltimore, Eldersburg, Ellicott City, Franconia, Washington,
Annandale, Cockeysville, Lisbon, Gaithersburg, and Aberdeen
1248 AM EDT Thu Sep 23 2021


The Flash Flood Watch continues for

* Portions of DC, Maryland and northern Virginia, including the
  following areas: in DC, District of Columbia. In Maryland,
  Carroll, Cecil, Central and Southeast Howard, Central and
  Southeast Montgomery, Northern Baltimore, Northwest Harford,
  Northwest Howard, Northwest Montgomery, Southeast Harford and
  Southern Baltimore. In northern Virginia, Arlington/Falls
  Church/Alexandria, Eastern Loudoun and Fairfax.

* From 5 AM EDT early this morning through this afternoon.

* Multiple rounds of showers and scattered thunderstorms capable of
  producing heavy rain are expected through this afternoon. The most
  widespread heavy rain is most likely late tonight through early
  this afternoon. Average rainfall amounts of 1 to 2 inches are
  expected, with localized higher amounts of up to 4 inches
  possible. Heavy rain falling over increasingly saturated ground
  may result in flash flooding.


You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.




Coastal Flood Advisory

Coastal Hazard Message
National Weather Service Baltimore MD/Washington DC
1225 AM EDT Thu Sep 23 2021

District of Columbia-Arlington/Falls Church/Alexandria-
1225 AM EDT Thu Sep 23 2021


* WHAT...Up to one foot of inundation above ground level in low
  lying areas due to tidal flooding.

* WHERE...Shoreline in the District of Columbia, Arlington
  County, and the City of Alexandria.

* WHEN...Until noon EDT today, especially around the time of
  high tide.

* IMPACTS...Shoreline inundation is expected along portions of the
  seawall adjacent to Ohio Drive and the Hains Point Loop Road and
  near the Tidal Basin. Minor shoreline inundation up to one foot
  above ground level is possible elsewhere. Water is expected to
  approach the curb near the intersection of King Street and
  Strand Street in Alexandria. Minor shoreline inundation up to
  one half foot above ground level is possible elsewhere.

* ADDITIONAL DETAILS...Tides one and a half to two feet above
  normal. The next high tide at Washington Channel is at 10:25 AM.
  The next high tide at Alexandria is at 10:43 AM.


If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone



Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Baltimore MD/Washington DC
1044 PM EDT Wed Sep 22 2021

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-Cecil-Southern Baltimore-
Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-
Central and Southeast Montgomery-Central and Southeast Howard-
Southeast Harford-Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-
King George-
1044 PM EDT Wed Sep 22 2021

This Hazardous Weather Outlook is for the Maryland portion of the
Chesapeake Bay, Tidal Potomac River, and I-95 corridor through
central Maryland, northern Virginia, and District of Columbia.

.DAY ONE...Tonight

A Coastal Flood Warning is in effect for Anne Arundel County

A Gale Warning is in effect for the lower tidal Potomac River and
the Chesapeake Bay and adjoining estuaries north of Smith Point

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

A Flash Flood Watch is in effect for portions of the DC and
Baltimore metro areas through Thursday afternoon.

A Coastal Flood Warning remains in effect for Anne Arundel County
through Thursday morning.

Severe thunderstorms are possible Thursday. The main threats are
damaging wind gusts or an isolated tornado.


Spotter activation may be needed through Thursday.


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Silver Spring, MD 20910
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