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Excessive Heat Watch


New Event Expired

Start Time

Sat 07/20/2019 11:00 AM EDT

End Time

Sat 07/20/2019 09:00 PM EDT




Moderate impact

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1109 AM EDT Thu Jul 18 2019 DCZ001-MDZ004>006-011-013-014-016>018-503>508-VAZ052>057-501-502- 505-506-182315- /O.NEW.KLWX.EH.A.0003.190720T1500Z-190721T0100Z/ /O.NEW.KLWX.EH.A.0004.190721T1500Z-190722T0100Z/ /O.EXT.KLWX.EH.A.0002.190719T1500Z-190720T0100Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys- Calvert-Northwest Montgomery-Central and Southeast Montgomery- Northwest Howard-Central and Southeast Howard-Northwest Harford- Southeast Harford-Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Stafford-Spotsylvania- King George-Northern Fauquier-Southern Fauquier-Western Loudoun- Eastern Loudoun- Including the cities of Washington, 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, St. Charles, Waldorf, Lexington Park, California, Chesapeake Beach, Huntingtown, Dunkirk, North Beach, Lusby, Prince Frederick, Germantown, Damascus, Bethesda, Rockville, Gaithersburg, Silver Spring, Lisbon, Columbia, Ellicott City, Jarrettsville, Aberdeen, Dale City, Manassas, Woodbridge, Lake Ridge, Montclair, Reston, Herndon, Annandale, Centreville, Chantilly, McLean, Franconia, Arlington, Alexandria, Falls Church, Falmouth, Fredericksburg, Dahlgren, Warrenton, Turnbull, Purcellville, Leesburg, Ashburn, and Sterling 1109 AM EDT Thu Jul 18 2019 ...EXCESSIVE HEAT WATCH NOW IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY EVENING... ...EXCESSIVE HEAT WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING... ...EXCESSIVE HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... The National Weather Service in Baltimore MD/Washington has issued an Excessive Heat Watch, which is in effect from Friday morning through Friday evening. An Excessive Heat Watch has also been issued from Saturday morning through Saturday evening. An Excessive Heat Watch has also been issued from Sunday morning through Sunday evening. * HEAT INDEX VALUES...Potentially around 110 to 115 degrees each day with temperatures in the middle 90s to around 100 degrees and dewpoints in the lower to middle 70s. * IMPACTS...Dangerously high temperatures and humidity could quickly cause heat stress or heat stroke if precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive Heat Watch means that a prolonged period of dangerously high temperatures is possible. Prepare for extreme temperatures and high humidity which would create a situation in which heat illnesses are expected. 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. &&