390
WWUS71 KLWX 180616
NPWLWX
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
216 AM EDT SAT JUL 18 2026
DCZ001-MDZ011-013-014-016>018-VAZ053>057-527-181430-
/O.NEW.KLWX.HT.Y.0011.260718T1500Z-260718T2300Z/
DISTRICT OF COLUMBIA-SOUTHERN BALTIMORE-PRINCE GEORGES-ANNE
ARUNDEL-CHARLES-ST. MARYS-CALVERT-FAIRFAX-ARLINGTON/FALLS
CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA-KING GEORGE-CENTRAL AND
SOUTHEAST PRINCE WILLIAM/MANASSAS/MANASSAS PARK-
216 AM EDT SAT JUL 18 2026
...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS
EVENING...
* 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 THIS MORNING TO 7 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.
ADS
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page