585
WWUS71 KLWX 040027
NPWLWX
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
827 PM EDT FRI JUL 3 2026
MDZ003-502-VAZ027>031-WVZ050>053-055-502-504-040830-
/O.EXP.KLWX.XH.W.0003.000000T0000Z-260704T0000Z/
/O.CON.KLWX.HT.Y.0007.260704T1400Z-260705T0000Z/
WASHINGTON-CENTRAL AND EASTERN ALLEGANY-SHENANDOAH-FREDERICK-PAGE-
WARREN-CLARKE-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-HARDY-EASTERN
GRANT-EASTERN MINERAL-
827 PM EDT FRI JUL 3 2026
..HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM TO 8 PM EDT SATURDAY
..EXTREME HEAT WARNING HAS EXPIRED
* WHAT...HEAT INDEX VALUES OF 100 TO 104 EXPECTED.
* WHERE...PORTIONS OF NORTH CENTRAL AND WESTERN MARYLAND, NORTHWEST
VIRGINIA, AND EASTERN AND PANHANDLE WEST VIRGINIA.
* WHEN...FROM 10 AM TO 8 PM EDT SATURDAY.
* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT AND HIGH HUMIDITY EVENTS. HOT TEMPERATURES AND HIGH
HUMIDITY MAY CAUSE HEAT ILLNESSES.
* ADDITIONAL DETAILS...EARLY MORNING LOW TEMPERATURES IN THE AROUND
70 COMBINED WITH OPPRESSIVE HUMIDITY WILL RESULT IN LITTLE TO NO
OVERNIGHT RELIEF. PROLONGED EXCESSIVE HEAT MAY IMPACT POWER,
WATER, AND TRANSPORTATION SYSTEMS.
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.
TAKE EXTRA PRECAUTIONS WHEN OUTSIDE. WEAR LIGHTWEIGHT AND LOOSE
FITTING CLOTHING. TRY TO LIMIT STRENUOUS ACTIVITIES TO EARLY MORNING
OR EVENING. TAKE ACTION WHEN YOU SEE SYMPTOMS OF HEAT EXHAUSTION AND
HEAT STROKE.
VAZ025-026-504-WVZ506-040830-
/O.EXP.KLWX.HT.Y.0006.000000T0000Z-260704T0000Z/
/O.CON.KLWX.HT.Y.0007.260704T1400Z-260705T0000Z/
AUGUSTA-ROCKINGHAM-EASTERN HIGHLAND-EASTERN PENDLETON-
827 PM EDT FRI JUL 3 2026
..HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM TO 8 PM EDT SATURDAY
* WHAT...HEAT INDEX VALUES OF 100 TO 104 EXPECTED.
* WHERE...IN VIRGINIA, AUGUSTA, EASTERN HIGHLAND, AND ROCKINGHAM
COUNTIES. IN WEST VIRGINIA, EASTERN PENDLETON COUNTY.
* WHEN...FROM 10 AM TO 8 PM EDT SATURDAY.
* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT AND HIGH HUMIDITY EVENTS. HOT TEMPERATURES AND HIGH
HUMIDITY MAY CAUSE HEAT ILLNESSES.
* ADDITIONAL DETAILS...EARLY MORNING LOW TEMPERATURES IN THE 70S
COMBINED WITH OPPRESSIVE HUMIDITY WILL RESULT IN LITTLE TO NO
OVERNIGHT RELIEF. PROLONGED EXCESSIVE HEAT MAY IMPACT POWER,
WATER, AND TRANSPORTATION SYSTEMS.
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.
TAKE EXTRA PRECAUTIONS WHEN OUTSIDE. WEAR LIGHTWEIGHT AND LOOSE
FITTING CLOTHING. TRY TO LIMIT STRENUOUS ACTIVITIES TO EARLY MORNING
OR EVENING. TAKE ACTION WHEN YOU SEE SYMPTOMS OF HEAT EXHAUSTION AND
HEAT STROKE.
MDZ501-509-510-VAZ503-507-508-WVZ501-503-505-040130-
/O.EXP.KLWX.HT.Y.0006.000000T0000Z-260704T0000Z/
EXTREME WESTERN ALLEGANY-WESTERN GARRETT-EASTERN GARRETT-WESTERN
HIGHLAND-NORTHERN VIRGINIA BLUE RIDGE-CENTRAL VIRGINIA BLUE RIDGE-
WESTERN GRANT-WESTERN MINERAL-WESTERN PENDLETON-
827 PM EDT FRI JUL 3 2026
..HEAT ADVISORY HAS EXPIRED
EXPECT HEAT INDEX VALUES AT OR JUST BELOW 100 THROUGH 10PM BEFORE
FALLING INTO THE 80S OVERNIGHT.
DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ036>040-050-051-
053>057-501-502-505-506-526-527-040830-
/O.CON.KLWX.XH.W.0003.000000T0000Z-260704T0100Z/
/O.CON.KLWX.XH.W.0004.260704T1400Z-260705T0100Z/
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-NELSON-ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-
ORANGE-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-
827 PM EDT FRI JUL 3 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM EDT THIS
EVENING...
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM TO 9 PM EDT
SATURDAY...
* WHAT...FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS
WITH HEAT INDEX VALUES 110 TO 115 EXPECTED.
* WHERE...PORTIONS OF DC, CENTRAL, NORTH CENTRAL, NORTHEAST,
NORTHERN, AND SOUTHERN MARYLAND, AND CENTRAL, NORTHERN, AND
NORTHWEST VIRGINIA.
* WHEN... FOR THE EXTREME HEAT WARNING, FROM 10 AM TO 9 PM EDT
SATURDAY.
* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT AND HIGH HUMIDITY EVENTS.
* ADDITIONAL DETAILS...EARLY MORNING LOW TEMPERATURES IN THE 70S AND
80S COMBINED WITH OPPRESSIVE HUMIDITY WILL RESULT IN LITTLE TO NO
OVERNIGHT RELIEF. PROLONGED EXCESSIVE HEAT MAY IMPACT POWER,
WATER, AND TRANSPORTATION SYSTEMS. HEAT INDEX VALUES AROUND 100
ARE POSSIBLE AGAIN SUNDAY AFTERNOON.
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.
DO NOT LEAVE YOUNG CHILDREN AND PETS IN UNATTENDED VEHICLES. CAR
INTERIORS WILL REACH LETHAL TEMPERATURES IN A MATTER OF MINUTES.
TAKE EXTRA PRECAUTIONS WHEN OUTSIDE. WEAR LIGHTWEIGHT AND LOOSE
FITTING CLOTHING. TRY TO LIMIT STRENUOUS ACTIVITIES TO EARLY MORNING
OR EVENING. TAKE ACTION WHEN YOU SEE SYMPTOMS OF HEAT EXHAUSTION AND
HEAT STROKE.
EST
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