743
WWUS74 KJAN 210223
NPWJAN
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE JACKSON MS
923 PM CDT MON JUL 20 2026
LAZ024-026-MSZ060-211200-
/O.EXA.KJAN.XH.W.0002.260721T1500Z-260722T0200Z/
/O.EXT.KJAN.HT.Y.0010.000000T0000Z-260721T1500Z/
CATAHOULA-CONCORDIA-ADAMS-
INCLUDING THE CITIES OF WEST FERRIDAY, JONESVILLE, VIDALIA,
NATCHEZ, FERRIDAY, AND HARRISONBURG
923 PM CDT MON JUL 20 2026
..HEAT ADVISORY NOW IN EFFECT UNTIL 10 AM CDT TUESDAY
..EXTREME HEAT WARNING IN EFFECT FROM 10 AM TO 9 PM CDT TUESDAY
* WHAT...FOR THE HEAT ADVISORY, HEAT INDEX VALUES UP TO 97. FOR THE
EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX
VALUES UP TO 113 EXPECTED.
* WHERE...PORTIONS OF NORTHEAST LOUISIANA AND SOUTHWEST MISSISSIPPI.
* WHEN...FOR THE HEAT ADVISORY, UNTIL 10 AM CDT TUESDAY. FOR THE
EXTREME HEAT WARNING, FROM 10 AM TO 9 PM CDT TUESDAY.
* 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.
DO NOT LEAVE YOUNG CHILDREN AND PETS IN UNATTENDED VEHICLES. CAR
INTERIORS WILL REACH LETHAL TEMPERATURES IN A MATTER OF MINUTES.
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.
STAY COOL, STAY HYDRATED, STAY INFORMED.
MONITOR THE LATEST FORECASTS AND WARNINGS FOR UPDATES.
ARZ074-LAZ007-015-023-MSZ026-027-211200-
/O.CON.KJAN.XH.W.0002.260721T1500Z-260722T0200Z/
/O.CON.KJAN.HT.Y.0009.000000T0000Z-260721T1500Z/
ASHLEY-MOREHOUSE-RICHLAND-FRANKLIN LA-GRENADA-CARROLL-
INCLUDING THE CITIES OF HAMBURG, DELHI, WINNSBORO, BASTROP, NORTH
CARROLLTON, RAYVILLE, GRENADA, CARROLLTON, VAIDEN, NORTH
CROSSETT, CROSSETT, AND WEST CROSSETT
923 PM CDT MON JUL 20 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CDT TUESDAY
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM TO 9 PM CDT
TUESDAY...
* WHAT...FOR THE HEAT ADVISORY, HEAT INDEX VALUES UP TO 110F DEGREES
DURING THE DAYTIME, WITH LIMITED HEAT RELIEF OVERNIGHT. FOR THE
EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX
VALUES UP TO 115F DEGREES, WITH LIMITED HEAT RELIEF OVERNIGHT.
* WHERE...PORTIONS OF SOUTHEAST ARKANSAS, NORTHEAST LOUISIANA, AND
NORTH CENTRAL MISSISSIPPI.
* WHEN...FOR THE HEAT ADVISORY, UNTIL 10 AM CDT TUESDAY. FOR THE
EXTREME HEAT WARNING, FROM 10 AM TO 9 PM CDT TUESDAY.
* 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.
DO NOT LEAVE YOUNG CHILDREN AND PETS IN UNATTENDED VEHICLES. CAR
INTERIORS WILL REACH LETHAL TEMPERATURES IN A MATTER OF MINUTES.
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.
LAZ008-009-016-025-MSZ036-040>043-047>049-053>055-059-211200-
/O.CON.KJAN.XH.W.0002.260721T1500Z-260722T0200Z/
/O.CON.KJAN.HT.Y.0010.000000T0000Z-260721T1500Z/
WEST CARROLL-EAST CARROLL-MADISON LA-TENSAS-HOLMES-ISSAQUENA-
SHARKEY-YAZOO-MADISON MS-WARREN-HINDS-RANKIN-CLAIBORNE-COPIAH-
SIMPSON-JEFFERSON-
INCLUDING THE CITIES OF WATERPROOF, BRANDON, MENDENHALL,
NEWELLTON, ANGUILLA, YAZOO CITY, RIDGELAND, LAKE PROVIDENCE, PORT
GIBSON, LEXINGTON, FAYETTE, GOODMAN, MADISON, JACKSON,
HAZLEHURST, EPPS, MAYERSVILLE, MAGEE, CRYSTAL SPRINGS, TCHULA,
ROLLING FORK, DURANT, RICHLAND, VICKSBURG, PICKENS, OAK GROVE,
ST. JOSEPH, TALLULAH, WESSON, PEARL, AND CANTON
923 PM CDT MON JUL 20 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CDT TUESDAY
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM TO 9 PM CDT
TUESDAY...
* WHAT...FOR THE HEAT ADVISORY, HEAT INDEX VALUES UP TO 110F DEGREES
DURING THE DAYTIME, WITH LIMITED HEAT RELIEF OVERNIGHT. FOR THE
EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX
VALUES UP TO 115F DEGREES, WITH LIMITED HEAT RELIEF OVERNIGHT.
* WHERE...PORTIONS OF NORTHEAST LOUISIANA AND CENTRAL, SOUTHWEST,
AND WEST CENTRAL MISSISSIPPI.
* WHEN...FOR THE HEAT ADVISORY, UNTIL 10 AM CDT TUESDAY. FOR THE
EXTREME HEAT WARNING, FROM 10 AM TO 9 PM CDT TUESDAY.
* 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.
DO NOT LEAVE YOUNG CHILDREN AND PETS IN UNATTENDED VEHICLES. CAR
INTERIORS WILL REACH LETHAL TEMPERATURES IN A MATTER OF MINUTES.
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.
ARZ075-MSZ018-019-025-034-035-211200-
/O.CON.KJAN.XH.W.0002.000000T0000Z-260722T0200Z/
CHICOT-BOLIVAR-SUNFLOWER-LEFLORE-WASHINGTON-HUMPHREYS-
INCLUDING THE CITIES OF RULEVILLE, DERMOTT, GREENWOOD, CLEVELAND,
ISOLA, BELZONI, LAKE VILLAGE, EUDORA, INDIANOLA, AND GREENVILLE
923 PM CDT MON JUL 20 2026
..EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM CDT TUESDAY
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES UP TO
115F DEGREES, WITH LIMITED HEAT RELIEF OVERNIGHT.
* WHERE...PORTIONS OF SOUTHEAST ARKANSAS AND CENTRAL, NORTH CENTRAL,
AND NORTHWEST MISSISSIPPI.
* WHEN...UNTIL 9 PM CDT TUESDAY.
* 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.
DO NOT LEAVE YOUNG CHILDREN AND PETS IN UNATTENDED VEHICLES. CAR
INTERIORS WILL REACH LETHAL TEMPERATURES IN A MATTER OF MINUTES.
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.
MSZ028>033-037>039-044>046-051-052-211200-
/O.CON.KJAN.HT.Y.0009.000000T0000Z-260722T0200Z/
MONTGOMERY-WEBSTER-CLAY-LOWNDES-CHOCTAW-OKTIBBEHA-ATTALA-WINSTON-
NOXUBEE-LEAKE-NESHOBA-KEMPER-NEWTON-LAUDERDALE-
INCLUDING THE CITIES OF KOSCIUSKO, WEIR, WINONA, EUPORA, WEST
POINT, MATHISTON, UNION, MACON, DE KALB, SCOOBA, BROOKSVILLE,
PEARL RIVER, DECATUR, CARTHAGE, CONEHATTA, MERIDIAN, LOUISVILLE,
NEWTON, COLUMBUS, PHILADELPHIA, STARKVILLE, AND ACKERMAN
923 PM CDT MON JUL 20 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT TUESDAY
* WHAT...HEAT INDEX VALUES UP TO 110F DEGREES DURING THE DAYTIME,
WITH LIMITED HEAT RELIEF OVERNIGHT.
* WHERE...PORTIONS OF CENTRAL, EAST CENTRAL, NORTH CENTRAL, AND
NORTHEAST MISSISSIPPI.
* WHEN...UNTIL 9 PM CDT TUESDAY.
* 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.
DO NOT LEAVE YOUNG CHILDREN AND PETS IN UNATTENDED VEHICLES. CAR
INTERIORS WILL REACH LETHAL TEMPERATURES IN A MATTER OF MINUTES.
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.
MSZ050-056>058-061>066-072>074-211200-
/O.CON.KJAN.HT.Y.0010.000000T0000Z-260722T0200Z/
SCOTT-SMITH-JASPER-CLARKE-FRANKLIN MS-LINCOLN-LAWRENCE-JEFFERSON
DAVIS-COVINGTON-JONES-MARION-LAMAR-FORREST-
INCLUDING THE CITIES OF RALEIGH, PRENTISS, TAYLORSVILLE, ROXIE,
FOREST, MORTON, LAUREL, BASSFIELD, WEST HATTIESBURG, HEIDELBERG,
NEW HEBRON, BROOKHAVEN, PURVIS, SHUBUTA, COLLINS, QUITMAN,
HATTIESBURG, MONTICELLO, MEADVILLE, COLUMBIA, STONEWALL,
LUMBERTON, BAY SPRINGS, BUDE, AND MOUNT OLIVE
923 PM CDT MON JUL 20 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT TUESDAY
* WHAT...HEAT INDEX VALUES UP TO 112.
* WHERE...PORTIONS OF CENTRAL, EAST CENTRAL, SOUTH CENTRAL,
SOUTHEAST, AND SOUTHWEST MISSISSIPPI.
* WHEN...UNTIL 9 PM CDT TUESDAY.
* 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.
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.
MONITOR THE LATEST FORECASTS AND WARNINGS FOR UPDATES.
22
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