767
WWUS71 KLWX 111916
NPWLWX
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
316 PM EDT THU JUN 11 2026
DCZ001-MDZ008-011-013-014-016>018-508-VAZ054-057-120330-
/O.CON.KLWX.HT.Y.0001.000000T0000Z-260612T0000Z/
/O.CON.KLWX.HT.Y.0002.260612T1500Z-260613T0000Z/
DISTRICT OF COLUMBIA-CECIL-SOUTHERN BALTIMORE-PRINCE GEORGES-ANNE
ARUNDEL-CHARLES-ST. MARYS-CALVERT-SOUTHEAST HARFORD-
ARLINGTON/FALLS CHURCH/ALEXANDRIA-KING GEORGE-
316 PM EDT THU JUN 11 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING
..HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT FRIDAY
* WHAT...FOR BOTH HEAT ADVISORIES, HEAT INDEX VALUES UP TO 107.
* WHERE...PORTIONS OF DC, CENTRAL, NORTHEAST, NORTHERN, AND SOUTHERN
MARYLAND, AND CENTRAL AND NORTHERN VIRGINIA.
* WHEN...FOR THE FIRST HEAT ADVISORY, UNTIL 8 PM EDT THIS EVENING.
FOR THE SECOND HEAT ADVISORY, FROM 11 AM TO 8 PM EDT FRIDAY.
* 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.
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 9 1 1.
CJL
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