Wind Advisory 7, NWS Baltimore/Washington

Issued

Apr 21, 2021, 2:47 PM EDT (18:47 UTC)

In effect from

Apr 21, 2021, 3:00 PM EDT

Expired

Apr 21, 2021, 8:00 PM EDT

In force

5 hr

Issued by

NWS Baltimore/Washington

Counties Anne Arundel County, MD, Calvert County, MD, Charles County, MD, Montgomery County, MD, Prince George's County, MD, Saint Mary's County, MD, Arlington County, VA, City of Alexandria, VA, City of Fairfax, VA, City of Falls Church, VA, Fairfax County, VA, King George County, VA, Loudoun County, VA, Stafford County, VA

The Sterling radar (KLWX), 46 km from the middle of the area, began a volume at 18:48 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

471 
WWUS71 KLWX 211847
NPWLWX

URGENT - WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
247 PM EDT Wed Apr 21 2021

VAZ505-220500-
/O.NEW.KLWX.WI.Y.0007.210421T1900Z-210422T0000Z/
/O.CON.KLWX.FZ.W.0001.210422T0400Z-210422T1300Z/
Western Loudoun-
Including the city of Purcellville
247 PM EDT Wed Apr 21 2021

...WIND ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
EDT THURSDAY...

* WHAT...For the Freeze Warning, sub-freezing temperatures as 
  low as 32 expected. For the Wind Advisory, northwest winds 15 
  to 25 mph with gusts up to 50 mph expected.

* WHERE...Western Loudoun County.

* WHEN...For the Freeze Warning, from midnight tonight to 9 AM 
  EDT Thursday. For the Wind Advisory, until 8 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. Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

MDZ003>006-507-VAZ025>031-040-501-507-508-WVZ051>053-220500-
/O.CON.KLWX.FZ.W.0001.210422T0400Z-210422T1300Z/
Washington-Frederick MD-Carroll-Northern Baltimore-
Northwest Harford-Augusta-Rockingham-Shenandoah-Frederick VA-Page-
Warren-Clarke-Rappahannock-Northern Fauquier-
Northern Virginia Blue Ridge-Central Virginia Blue Ridge-Morgan-
Berkeley-Jefferson-
Including the cities of Hagerstown, Frederick, Ballenger Creek, 
Eldersburg, Westminster, Reisterstown, Cockeysville, 
Jarrettsville, Staunton, Waynesboro, Stuarts Draft, Harrisonburg,
Strasburg, Woodstock, Mount Jackson, New Market, Winchester, 
Luray, Shenandoah, Stanley, Front Royal, Berryville, Washington, 
Warrenton, Big Meadows, Wintergreen, Paw Paw, Martinsburg, 
Charles Town, and Shepherdstown
247 PM EDT Wed Apr 21 2021

...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
EDT THURSDAY...

* WHAT...Sub-freezing temperatures as low as 30 expected.

* WHERE...Portions of north central and northern Maryland, 
  central, northern, northwest and western Virginia and 
  panhandle West Virginia.

* WHEN...From midnight tonight to 9 AM EDT Thursday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

DCZ001-MDZ013-014-016>018-503-504-VAZ052>055-057-506-220000-
/O.NEW.KLWX.WI.Y.0007.210421T1900Z-210422T0000Z/
District of Columbia-Prince Georges-Anne Arundel-Charles-
St. Marys-Calvert-Northwest Montgomery-
Central and Southeast Montgomery-
Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-King George-
Eastern Loudoun-
Including the cities of Washington, 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, Germantown, Damascus, Bethesda, Rockville, 
Gaithersburg, Silver Spring, Dale City, Manassas, Woodbridge, 
Lake Ridge, Montclair, Reston, Herndon, Annandale, Centreville, 
Chantilly, McLean, Franconia, Arlington, Alexandria, 
Falls Church, Falmouth, Dahlgren, Leesburg, Ashburn, and Sterling
247 PM EDT Wed Apr 21 2021

...WIND ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

* WHAT...Northwest winds 15 to 20 mph with gusts up to 50 mph 
  expected.

* WHERE...Portions of The District of Columbia, central and 
  southern Maryland and northern Virginia. 

* WHEN...Until 8 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.

&&

$$

908 
WWUS71 KLWX 220001
NPWLWX

URGENT - WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
801 PM EDT Wed Apr 21 2021

VAZ505-220815-
/O.EXP.KLWX.WI.Y.0007.000000T0000Z-210422T0000Z/
/O.CON.KLWX.FZ.W.0001.210422T0400Z-210422T1300Z/
Western Loudoun-
Including the city of Purcellville
801 PM EDT Wed Apr 21 2021

...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
EDT THURSDAY...
...WIND ADVISORY HAS EXPIRED...

* WHAT...Sub-freezing temperatures as low as 32 expected.

* WHERE...Western Loudoun County.

* WHEN...From midnight tonight to 9 AM EDT Thursday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

DCZ001-MDZ013-014-016>018-503-504-VAZ052>055-057-506-220115-
/O.EXP.KLWX.WI.Y.0007.000000T0000Z-210422T0000Z/
District of Columbia-Prince Georges-Anne Arundel-Charles-
St. Marys-Calvert-Northwest Montgomery-
Central and Southeast Montgomery-
Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-King George-
Eastern Loudoun-
Including the cities of Washington, 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, Germantown, Damascus, Bethesda, Rockville, 
Gaithersburg, Silver Spring, Dale City, Manassas, Woodbridge, 
Lake Ridge, Montclair, Reston, Herndon, Annandale, Centreville, 
Chantilly, McLean, Franconia, Arlington, Alexandria, 
Falls Church, Falmouth, Dahlgren, Leesburg, Ashburn, and Sterling
801 PM EDT Wed Apr 21 2021

...WIND ADVISORY HAS EXPIRED...

Winds have dropped below advisory criteria.

$$

MDZ003>006-507-VAZ025>031-040-501-507-508-WVZ051>053-220815-
/O.CON.KLWX.FZ.W.0001.210422T0400Z-210422T1300Z/
Washington-Frederick MD-Carroll-Northern Baltimore-
Northwest Harford-Augusta-Rockingham-Shenandoah-Frederick VA-Page-
Warren-Clarke-Rappahannock-Northern Fauquier-
Northern Virginia Blue Ridge-Central Virginia Blue Ridge-Morgan-
Berkeley-Jefferson-
Including the cities of Hagerstown, Frederick, Ballenger Creek, 
Eldersburg, Westminster, Reisterstown, Cockeysville, 
Jarrettsville, Staunton, Waynesboro, Stuarts Draft, Harrisonburg,
Strasburg, Woodstock, Mount Jackson, New Market, Winchester, 
Luray, Shenandoah, Stanley, Front Royal, Berryville, Washington, 
Warrenton, Big Meadows, Wintergreen, Paw Paw, Martinsburg, 
Charles Town, and Shepherdstown
801 PM EDT Wed Apr 21 2021

...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
EDT THURSDAY...

* WHAT...Sub-freezing temperatures as low as 30 expected.

* WHERE...Portions of north central and northern Maryland, 
  central, northern, northwest and western Virginia and 
  panhandle West Virginia.

* WHEN...From midnight tonight to 9 AM EDT Thursday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

Wind Advisories in Virginia, 2021Wind Advisories in Maryland, 2021Wind Advisories in District of Columbia, 2021Every wind advisory in 2021

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.