848
WWUS72 KCHS 170547
NPWCHS
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
147 AM EDT MON AUG 17 2026
GAZ217-219-239>241-SCZ045-148>152-171400-
/O.NEW.KCHS.XH.A.0005.260818T1500Z-260819T0000Z/
/O.CON.KCHS.XH.W.0007.260817T1500Z-260818T0000Z/
COASTAL BRYAN-COASTAL CHATHAM-COASTAL LIBERTY-INLAND MCINTOSH-
COASTAL MCINTOSH-INLAND BERKELEY-BEAUFORT-COASTAL COLLETON-
CHARLESTON-COASTAL JASPER-TIDAL BERKELEY-
INCLUDING THE CITIES OF FORT MCALLISTER, GOOSE CREEK, TOWNSEND,
JASPER, BEAUFORT, OAK LEVEL, DARIEN, CHARLESTON, NORTH CHARLESTON,
MOUNT PLEASANT, EDISTO BEACH, CHELSEA, DANIEL ISLAND, TYBEE ISLAND,
MONCKS CORNER, LEVY, HILTON HEAD ISLAND, AND WILMINGTON ISLAND
147 AM EDT MON AUG 17 2026
...EXTREME HEAT WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY
EVENING...
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
8 PM EDT THIS EVENING...
* WHAT...FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS
WITH HEAT INDEX VALUES UP TO 112 TO 115 EXPECTED. FOR THE EXTREME
HEAT WATCH, DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES UP TO
113 TO 117 POSSIBLE.
* WHERE...PORTIONS OF SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.
* WHEN...FOR THE EXTREME HEAT WARNING, FROM 11 AM THIS MORNING TO 8
PM EDT THIS EVENING. FOR THE EXTREME HEAT WATCH, FROM TUESDAY
MORNING THROUGH TUESDAY EVENING.
* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT AND HIGH HUMIDITY EVENTS.
* ADDITIONAL DETAILS...ISOLATED SHOWERS AND THUNDERSTORMS DURING
AFTERNOON HOURS COULD PROVIDE RELIEF IN SOME AREAS.
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.
GAZ216-218-238-SCZ044-147-171400-
/O.NEW.KCHS.XH.A.0005.260818T1500Z-260819T0000Z/
/O.CON.KCHS.HT.Y.0024.260817T1500Z-260818T0000Z/
INLAND BRYAN-INLAND CHATHAM-INLAND LIBERTY-DORCHESTER-INLAND
JASPER-
INCLUDING THE CITIES OF SAVANNAH, HINESVILLE, SAINT GEORGE, PEMBROKE,
FORT STEWART, POOLER, RIDGELAND, SUMMERVILLE, RICHMOND HILL, AND
GARDEN CITY
147 AM EDT MON AUG 17 2026
...EXTREME HEAT WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY
EVENING...
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM
EDT THIS EVENING...
* WHAT...FOR THE HEAT ADVISORY, HEAT INDEX VALUES UP TO 111 EXPECTED.
FOR THE EXTREME HEAT WATCH, DANGEROUSLY HOT CONDITIONS WITH HEAT
INDEX VALUES UP TO 112 TO 115 POSSIBLE.
* WHERE...IN GEORGIA, INLAND BRYAN, INLAND CHATHAM, AND INLAND
LIBERTY COUNTIES. IN SOUTH CAROLINA, DORCHESTER AND INLAND JASPER
COUNTIES.
* WHEN...FOR THE HEAT ADVISORY, FROM 11 AM THIS MORNING TO 8 PM EDT
THIS EVENING. FOR THE EXTREME HEAT WATCH, FROM TUESDAY MORNING
THROUGH TUESDAY EVENING.
* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT AND HIGH HUMIDITY EVENTS. HOT TEMPERATURES AND HIGH
HUMIDITY MAY CAUSE HEAT ILLNESSES.
* ADDITIONAL DETAILS...ISOLATED SHOWERS AND THUNDERSTORMS DURING
AFTERNOON HOURS COULD PROVIDE SOME RELIEF IN SOME AREAS.
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.
GAZ087-088-099>101-114-115-137-SCZ040-042-043-171400-
/O.CON.KCHS.HT.Y.0024.260817T1500Z-260818T0000Z/
JENKINS-SCREVEN-CANDLER-BULLOCH-EFFINGHAM-TATTNALL-EVANS-LONG-
ALLENDALE-HAMPTON-INLAND COLLETON-
INCLUDING THE CITIES OF STATESBORO, HAMPTON, RINCON, SYLVANIA,
ALLENDALE, CLAXTON, YEMASSEE, SPRINGFIELD, REIDSVILLE, WALTERBORO,
LUDOWICI, MILLEN, AND METTER
147 AM EDT MON AUG 17 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM
EDT THIS EVENING...
* WHAT...HEAT INDEX VALUES UP TO 109 EXPECTED.
* WHERE...PORTIONS OF SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.
* WHEN...FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT
ILLNESSES.
* ADDITIONAL DETAILS...ISOLATED SHOWERS AND THUNDERSTORMS DURING
AFTERNOON HOURS COULD PROVIDE RELIEF IN SOME AREAS.
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.
DPB
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page