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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Baltimore MD/Washington DC
324 AM EST Mon Mar 1 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-
324 AM EST Mon Mar 1 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...Today and Tonight

A Dense Fog Advisory is in effect until 8 AM.

A Gale Warning is in effect. Gale force winds may begin abruptly
around midday.

Please consult the latest Flood Warnings for ongoing flooding.

Isolated wind damage due to wind gusts to near 50 mph is possible
late today into tonight.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.


Spotter activation is not expected at this time.


Flood Watch

Flood Watch
National Weather Service Baltimore MD/Washington DC
322 AM EST Mon Mar 1 2021

...The National Weather Service in Baltimore MD/Washington DC has
issued a Flood Watch for the following rivers in Maryland...

  Potomac River at Little Falls affecting Central and Southeast
  Montgomery and Fairfax Counties.

...The Flood Watch is replaced with a River Flood Warning for the
following rivers in Maryland...Virginia...

  Potomac River at Point of Rocks affecting Frederick MD and
  Western Loudoun Counties.

...The Flood Watch is extended for the following rivers in

  Potomac River at Edwards Ferry affecting Eastern Loudoun, Western
  Loudoun and Northwest Montgomery Counties.

...The Flood Watch continues for the following rivers in Maryland...
West Virginia...Virginia...

  Potomac River at Dam Number Five affecting Washington and
  Berkeley Counties.

  Shenandoah River at Millville affecting Clarke, Jefferson and
  Warren Counties.


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.

Additional information is available at or

322 AM EST Mon Mar 1 2021

The National Weather Service in Sterling Virginia has issued a

* Flood Watch for
  the Potomac River at Little Falls.
* From early this morning until further notice.
* At 2:45 AM EST Monday the stage was 6.5 feet, or 3.5 feet below
  flood stage.
* Flood stage is 10.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached based on the latest forecast
* Impact...At 10.0 feet, Water begins to overflow the banks into low
  lying areas on the Maryland side of the river near Little Falls.
  Water begins to enter the canoe shed at Sycamore Island.


River Name    Fld      Observed    Mon   Mon   Mon     Crest
Location      Stg   Stg  Day/Time  7AM   1PM   7PM   Stg Time Date

Potomac River
Little Falls  10.0  6.5  Mon 2 am  6.7   7.0   7.5   9.7 7pm Tue


LAT...LON 3908 7730 3904 7723 3902 7721 3895 7706
      3891 7712 3896 7724 3903 7736


U.S. Dept. of Commerce
NOAA National Weather Service
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Silver Spring, MD 20910
Page last modified: May 16, 2007
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