weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

4 products issued by NWS for: Tysons Corner VA
Share |


Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Baltimore MD/Washington DC
208 PM EDT Thu Apr 9 2020

ANZ530>543-DCZ001-MDZ011-013-014-016>018-508-VAZ052>057-101815-
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-
208 PM EDT Thu Apr 9 2020

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 Wind Advisory is in effect for the Baltimore and Washington
Metropolitan areas from 10 AM until 7 PM today. Westerly winds
will gust around 50 mph.

A Gale Warning is in effect for all waters through this afternoon.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

West to northwest wind gusts around around 50 mph are possible
Friday. A Wind Advisory may be needed.

A Gale Warning may be needed for the waters Friday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today.

$$



Wind Advisory

URGENT - WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
152 PM EDT Thu Apr 9 2020

DCZ001-MDZ003>006-011-013-014-501>508-VAZ027-028-030-031-052>054-
501-505>508-WVZ050>053-055-501>504-092300-
/O.EXT.KLWX.WI.Y.0008.000000T0000Z-200409T2300Z/
District of Columbia-Washington-Frederick MD-Carroll-
Northern Baltimore-Southern Baltimore-Prince Georges-Anne Arundel-
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-Warren-Clarke-
Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Northern Fauquier-
Western Loudoun-Eastern Loudoun-Northern Virginia Blue Ridge-
Central 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,
Frostburg, Cumberland, Germantown, Damascus, Bethesda, Rockville,
Gaithersburg, Silver Spring, Lisbon, Columbia, Ellicott City,
Jarrettsville, Aberdeen, Strasburg, Woodstock, Mount Jackson,
New Market, Winchester, Front Royal, Berryville, Dale City,
Manassas, Woodbridge, Lake Ridge, Montclair, Reston, Herndon,
Annandale, Centreville, Chantilly, McLean, Franconia, Arlington,
Alexandria, Falls Church, Warrenton, Purcellville, Leesburg,
Ashburn, Sterling, Big Meadows, Wintergreen, Romney, Paw Paw,
Martinsburg, Charles Town, Shepherdstown, Moorefield, Bayard,
Mount Storm, Petersburg, Elk Garden, Antioch, Keyser, New Creek,
Ridgeville, Russelldale, Headsville, and Fort Ashby
152 PM EDT Thu Apr 9 2020

...WIND ADVISORY NOW IN EFFECT UNTIL 7 PM EDT THIS EVENING...

* WHAT...West winds 20 to 30 mph with gusts up to 50 mph
  expected.

* WHERE...The District of Columbia, much of central and western
  Maryland, the eastern panhandle of West Virginia, and portions
  of northern Virginia.

* WHEN...Until 7 PM EDT this evening.

* IMPACTS...Gusty winds could blow around unsecured objects.
  Tree limbs could be blown down and a few power outages may
  result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$



Short Term Forecast

Short Term Forecast
National Weather Service Baltimore MD/Washington DC
135 PM EDT Thu Apr 9 2020

DCZ001-MDZ004>006-011-013-014-016-018-503>506-VAZ052>054-501-505-506-
091930-
District of Columbia-Calvert-Prince Georges-Central and Southeast
Howard-Southern Baltimore-Carroll-Northwest
Montgomery-Charles-Frederick-Northern Baltimore-Anne Arundel-Central
and Southeast Montgomery-Northwest Howard-Fairfax-Arlington/Falls
Church/Alexandria-Prince William/Manassas/Manassas Park-Western
Loudoun-Eastern Loudoun-Northern Fauquier-
135 PM EDT Thu Apr 9 2020

Wind gusts will continue to increase over the next 1-2 hours.
Numerous wind gusts from 45-55 mph are likely.

LAT...LON 3929 7638 3920 7644 3927 7663 3913 7643
      3901 7638 3901 7639 3898 7647 3887 7651
      3868 7653 3846 7647 3853 7668 3851 7668
      3888 7704 3885 7704 3885 7703 3872 7704
      3869 7719 3864 7713 3886 7795 3954 7748
TIME...MOT...LOC 1733Z 275DEG 32KT 3948 7690 3876 7750

$$

KJP




Special Weather Statement

Special Weather Statement
National Weather Service Baltimore MD/Washington DC
1119 AM EDT Thu Apr 9 2020

DCZ001-MDZ004-005-503>505-VAZ025-026-029>031-038>040-051>054-501-
502-505>508-092130-
District of Columbia-Frederick MD-Carroll-Northwest Montgomery-
Central and Southeast Montgomery-Northwest Howard-Augusta-
Rockingham-Page-Warren-Clarke-Greene-Madison-Rappahannock-
Culpeper-Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Northern Fauquier-
Southern Fauquier-Western Loudoun-Eastern Loudoun-
Northern Virginia Blue Ridge-Central Virginia Blue Ridge-
Including the cities of Washington, Frederick, Ballenger Creek,
Eldersburg, Westminster, Germantown, Damascus, Bethesda,
Rockville, Gaithersburg, Silver Spring, Lisbon, Staunton,
Waynesboro, Stuarts Draft, Harrisonburg, Luray, Shenandoah,
Stanley, Front Royal, Berryville, Stanardsville, Madison,
Culpeper, Dale City, Manassas, Woodbridge, Lake Ridge, Montclair,
Reston, Herndon, Annandale, Centreville, Chantilly, McLean,
Franconia, Arlington, Alexandria, Falls Church, Warrenton,
Turnbull, Purcellville, Leesburg, Ashburn, Sterling, Big Meadows,
and Wintergreen
1119 AM EDT Thu Apr 9 2020

...SUDDEN ONSET OF GUSTY WINDS...

As of 11:15 AM...a strong cold front accompanied by showers and
developing thunderstorms was located from just west of Hagerstown
Maryland to just west of Martinsburg West Virginia to near
Shenandoah Mountain. This front is moving east at about 50 MPH.

A sudden onset of westerly wind gusts in excess of 50 MPH is
expected. This includes north-central Maryland, northern Virginia,
the northern and central Virginia Blue Ridge and the central
Shenandoah Valley.

Winds of this magnitude are capable of damaging tents, blowing
around unsecured outdoor objects, and knocking down branches,
trees and power lines resulting in power outages.

The onset of strong winds should reach a line from Frederick Maryland
to Harrisonburg Virginia by noon, and then approach the Interstate
95 corridor between noon and 1:00 PM. Should showers or
thunderstorms along this front intensify and wind gusts in excess
of 58 MPH become imminent, Severe Thunderstorm Warnings would be
issued.

$$

DHOF



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
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE