450
WWUS71 KLWX 162039
NPWLWX
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
439 PM EDT WED JUL 16 2025
DCZ001-MDZ008-011-013-014-016>018-508-VAZ053>055-057-527-170445-
/O.NEW.KLWX.HT.Y.0007.250717T1500Z-250718T0000Z/
DISTRICT OF COLUMBIA-CECIL-SOUTHERN BALTIMORE-PRINCE GEORGES-ANNE
ARUNDEL-CHARLES-ST. MARYS-CALVERT-SOUTHEAST HARFORD-FAIRFAX-
ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-KING GEORGE-CENTRAL
AND SOUTHEAST PRINCE WILLIAM/MANASSAS/MANASSAS PARK-
439 PM EDT WED JUL 16 2025
..HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT THURSDAY
* WHAT...HEAT INDEX VALUES AROUND 105 EXPECTED.
* WHERE...WASHINGTON DC, AND PORTIONS OF CENTRAL, NORTHERN, AND
SOUTHERN MARYLAND, AND CENTRAL AND NORTHERN VIRGINIA.
* WHEN...FROM 11 AM TO 8 PM EDT THURSDAY.
* 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.
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.
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