563
WWUS71 KLWX 150449
NPWLWX
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1249 AM EDT WED JUL 15 2026
DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ040-051-053>057-
501-502-505-506-526-527-151300-
/O.CON.KLWX.HT.Y.0009.260715T1500Z-260716T0000Z/
DISTRICT OF COLUMBIA-FREDERICK-CARROLL-NORTHERN BALTIMORE-CECIL-
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-RAPPAHANNOCK-CULPEPER-FAIRFAX-ARLINGTON/FALLS
CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA-KING GEORGE-NORTHERN
FAUQUIER-SOUTHERN FAUQUIER-WESTERN LOUDOUN-EASTERN LOUDOUN-
NORTHWEST PRINCE WILLIAM-CENTRAL AND SOUTHEAST PRINCE
WILLIAM/MANASSAS/MANASSAS PARK-
1249 AM EDT WED JUL 15 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM
EDT THIS EVENING...
* WHAT...HEAT INDEX VALUES UP TO 105 EXPECTED.
* WHERE...PORTIONS OF DC, CENTRAL, NORTH CENTRAL, NORTHEAST,
NORTHERN, AND SOUTHERN MARYLAND, AND CENTRAL, NORTHERN, AND
NORTHWEST VIRGINIA.
* WHEN...FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT
ILLNESSES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT OF
THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS.
MDZ003-502-VAZ026>031-WVZ050>053-055-502-504-151300-
/O.CON.KLWX.HT.Y.0009.260715T1500Z-260716T0000Z/
WASHINGTON-CENTRAL AND EASTERN ALLEGANY-ROCKINGHAM-SHENANDOAH-
FREDERICK-PAGE-WARREN-CLARKE-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-
HARDY-EASTERN GRANT-EASTERN MINERAL-
1249 AM EDT WED JUL 15 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM
EDT THIS EVENING...
* WHAT...HEAT INDEX VALUES UP TO 105 EXPECTED.
* WHERE...PORTIONS OF NORTH CENTRAL AND WESTERN MARYLAND, NORTHWEST
AND WESTERN VIRGINIA, AND EASTERN AND PANHANDLE WEST VIRGINIA.
* WHEN...FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT
ILLNESSES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT OF
THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS.
BELAK
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