945
WWUS72 KCHS 181818
NPWCHS
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
218 PM EDT TUE AUG 18 2026
GAZ217>219-239>241-SCZ148>152-190230-
/O.NEW.KCHS.HT.Y.0026.260819T1500Z-260820T0000Z/
/O.CON.KCHS.XH.W.0008.000000T0000Z-260819T0000Z/
COASTAL BRYAN-INLAND CHATHAM-COASTAL CHATHAM-COASTAL LIBERTY-
INLAND MCINTOSH-COASTAL MCINTOSH-BEAUFORT-COASTAL COLLETON-
CHARLESTON-COASTAL JASPER-TIDAL BERKELEY-
INCLUDING THE CITIES OF FORT MCALLISTER, SAVANNAH, TYBEE ISLAND,
DANIEL ISLAND, MOUNT PLEASANT, CHELSEA, BEAUFORT, EDISTO BEACH, NORTH
CHARLESTON, OAK LEVEL, DARIEN, HILTON HEAD ISLAND, JASPER, GARDEN
CITY, CHARLESTON, TOWNSEND, WILMINGTON ISLAND, LEVY, AND POOLER
218 PM EDT TUE AUG 18 2026
..HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
* WHAT...FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS
WITH HEAT INDEX VALUES OF 113 DEGREES OR HIGHER. FOR THE HEAT
ADVISORY, HEAT INDEX VALUES UP TO 110 EXPECTED.
* WHERE...PORTIONS OF SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.
* WHEN...FOR THE EXTREME HEAT WARNING, UNTIL 8 PM EDT THIS EVENING.
FOR THE HEAT ADVISORY, FROM 11 AM TO 8 PM EDT WEDNESDAY.
* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT AND HIGH HUMIDITY EVENTS. 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.
GAZ101-216-238-SCZ044-045-147-190000-
/O.CON.KCHS.XH.W.0008.000000T0000Z-260819T0000Z/
EFFINGHAM-INLAND BRYAN-INLAND LIBERTY-DORCHESTER-INLAND BERKELEY-
INLAND JASPER-
INCLUDING THE CITIES OF FORT STEWART, MONCKS CORNER, RICHMOND HILL,
RIDGELAND, GOOSE CREEK, SUMMERVILLE, SAINT GEORGE, SPRINGFIELD,
HINESVILLE, RINCON, AND PEMBROKE
218 PM EDT TUE AUG 18 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES OF 113
DEGREES OR HIGHER.
* WHERE...IN GEORGIA, EFFINGHAM, INLAND BRYAN, AND INLAND LIBERTY
COUNTIES. IN SOUTH CAROLINA, DORCHESTER, INLAND BERKELEY, AND
INLAND JASPER COUNTIES.
* WHEN...UNTIL 8 PM EDT THIS EVENING.
* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT AND HIGH HUMIDITY EVENTS.
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.
GAZ087-088-099-100-114-115-137-SCZ040-042-043-190000-
/O.CON.KCHS.HT.Y.0025.000000T0000Z-260819T0000Z/
JENKINS-SCREVEN-CANDLER-BULLOCH-TATTNALL-EVANS-LONG-ALLENDALE-
HAMPTON-INLAND COLLETON-
INCLUDING THE CITIES OF WALTERBORO, LUDOWICI, CLAXTON, HAMPTON,
METTER, REIDSVILLE, YEMASSEE, ALLENDALE, STATESBORO, MILLEN, AND
SYLVANIA
218 PM EDT TUE AUG 18 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING
* WHAT...HEAT INDEX VALUES UP TO 112.
* WHERE...PORTIONS OF SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.
* WHEN...UNTIL 8 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.
BSH
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