Non-Precipitation Warnings / Watches / Advisories
Issued by NWS Sterling, VA

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000
WWUS71 KLWX 201639
NPWLWX

URGENT - WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
1239 PM EDT Thu Jul 20 2017


DCZ001-MDZ011-013-014-016>018-508-VAZ052>055-057-202300-
/O.CON.KLWX.HT.Y.0004.000000T0000Z-170720T2300Z/
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-King George-
Including the cities of Washington, Baltimore, 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, Aberdeen,
Dale City, Manassas, Woodbridge, Lake Ridge, Montclair, Reston,
Herndon, Annandale, Centreville, Chantilly, McLean, Franconia,
Arlington, Alexandria, Falmouth, and Dahlgren
1239 PM EDT Thu Jul 20 2017

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING...

* HEAT INDEX VALUES...Up to 107 due to temperatures in the mid
  90s to near 100, and dewpoints around 70.

* IMPACTS...The heat and humidity may cause heat stress during
  outdoor exertion or extended exposure.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Heat Advisory means that a period of high temperatures is
expected. The combination of high temperatures and high humidity
will create a situation in which heat illnesses are possible.

Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency - call 911.

&&

$$

MDZ003-502-VAZ027>031-WVZ051>053-202300-
/O.CON.KLWX.HT.Y.0004.000000T0000Z-170720T2300Z/
Washington-Central and Eastern Allegany-Shenandoah-Frederick VA-
Page-Warren-Clarke-Morgan-Berkeley-Jefferson-
Including the cities of Hagerstown, Cumberland, Strasburg,
Woodstock, Mount Jackson, New Market, Winchester, Luray,
Shenandoah, Stanley, Front Royal, Berryville, Paw Paw,
Martinsburg, Charles Town, and Shepherdstown
1239 PM EDT Thu Jul 20 2017

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING...

* HEAT INDEX VALUES...Up to 104 due to temperatures in the mid
  90s, and dewpoints in the upper 60s.

* IMPACTS...The heat and humidity may cause heat stress during
  outdoor exertion or extended exposure.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Heat Advisory means that a period of high temperatures is
expected. The combination of high temperatures and high humidity
will create a situation in which heat illnesses are possible.

Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency - call 911.

&&

$$

MDZ004>006-503>507-VAZ036>040-050-051-056-501-502-505-506-202300-
/O.CON.KLWX.HT.Y.0004.000000T0000Z-170720T2300Z/
Frederick MD-Carroll-Northern Baltimore-Northwest Montgomery-
Central and Southeast Montgomery-Northwest Howard-
Central and Southeast Howard-Northwest Harford-Nelson-Albemarle-
Greene-Madison-Rappahannock-Orange-Culpeper-Spotsylvania-
Northern Fauquier-Southern Fauquier-Western Loudoun-
Eastern Loudoun-
Including the cities of Frederick, Ballenger Creek, Eldersburg,
Westminster, Reisterstown, Cockeysville, Germantown, Damascus,
Bethesda, Rockville, Gaithersburg, Silver Spring, Lisbon,
Columbia, Ellicott City, Jarrettsville, Lovingston,
Charlottesville, Stanardsville, Madison, Washington, Orange,
Gordonsville, Culpeper, Fredericksburg, Warrenton, Turnbull,
Purcellville, Leesburg, Ashburn, and Sterling
1239 PM EDT Thu Jul 20 2017

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING...

* HEAT INDEX VALUES...Up to 104 due to temperatures in the mid
  90s, and dewpoints in the upper 60s.

* IMPACTS...The heat and humidity may cause heat stress during
  outdoor exertion or extended exposure.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Heat Advisory means that a period of high temperatures is
expected. The combination of high temperatures and high humidity
will create a situation in which heat illnesses are possible.

Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency - call 911.

&&

$$


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