574
WWUS73 KLSX 281852
NPWLSX
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
152 PM CDT TUE JUL 28 2026
MOZ041-047-048-050>052-060-282000-
/O.CAN.KLSX.HT.Y.0006.000000T0000Z-260729T0000Z/
BOONE MO-MONITEAU MO-COLE MO-CALLAWAY MO-MONTGOMERY MO-LINCOLN MO-
WARREN MO-
INCLUDING THE CITIES OF COLUMBIA, FULTON, AND JEFFERSON CITY
152 PM CDT TUE JUL 28 2026
..HEAT ADVISORY IS CANCELLED
PERSISTENT CLOUD COVER HAS PREVENTED TEMPERATURES AND HEAT INDEX
VALUES FROM REACHING DANGEROUS LEVELS TODAY. THEREFORE, THE HEAT
ADVISORY HAS BEEN CANCELLED.
ILZ074-079-MOZ072>075-084-085-099-290000-
/O.CON.KLSX.XH.W.0002.000000T0000Z-260729T0000Z/
WASHINGTON IL-RANDOLPH IL-CRAWFORD MO-WASHINGTON MO-SAINT
FRANCOIS MO-SAINTE GENEVIEVE MO-IRON MO-MADISON MO-REYNOLDS MO-
INCLUDING THE CITIES OF SPARTA, FARMINGTON, AND CHESTER
152 PM CDT TUE JUL 28 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES UP TO 105.
* WHERE...IN ILLINOIS, WASHINGTON IL AND RANDOLPH IL COUNTIES. IN
MISSOURI, CRAWFORD MO, WASHINGTON MO, IRON MO, MADISON MO, REYNOLDS
MO, SAINT FRANCOIS MO, AND SAINTE GENEVIEVE MO COUNTIES.
* WHEN...UNTIL 7 PM CDT 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. YOUNG CHILDREN AND
PETS SHOULD NEVER BE LEFT UNATTENDED IN VEHICLES UNDER ANY
CIRCUMSTANCES. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME
OUTSIDE. WHEN POSSIBLE RESCHEDULE STRENUOUS ACTIVITIES TO EARLY
MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION
AND HEAT STROKE. WEAR LIGHTWEIGHT AND LOOSE FITTING CLOTHING WHEN
POSSIBLE. 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.
ILZ101-102-MOZ065-290000-
/O.CON.KLSX.XH.W.0002.000000T0000Z-260729T0000Z/
SAINT CLAIR IL-MONROE IL-JEFFERSON MO-
INCLUDING THE CITIES OF CAHOKIA AND BELLEVILLE
152 PM CDT TUE JUL 28 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES UP TO 106.
* WHERE...IN ILLINOIS, MONROE IL AND SAINT CLAIR IL COUNTIES. IN
MISSOURI, JEFFERSON MO COUNTY.
* WHEN...UNTIL 7 PM CDT 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. YOUNG CHILDREN AND
PETS SHOULD NEVER BE LEFT UNATTENDED IN VEHICLES UNDER ANY
CIRCUMSTANCES. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME
OUTSIDE. WHEN POSSIBLE RESCHEDULE STRENUOUS ACTIVITIES TO EARLY
MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION
AND HEAT STROKE. WEAR LIGHTWEIGHT AND LOOSE FITTING CLOTHING WHEN
POSSIBLE. 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.
ILZ064-069-070-100-MOZ049-059-061>064-290000-
/O.CON.KLSX.HT.Y.0006.000000T0000Z-260729T0000Z/
BOND IL-CLINTON IL-MARION IL-MADISON IL-OSAGE MO-GASCONADE MO-
SAINT CHARLES MO-FRANKLIN MO-SAINT LOUIS MO-SAINT LOUIS CITY MO-
INCLUDING THE CITIES OF SULLIVAN, SAINT CHARLES, CENTRALIA, ALTON,
SAINT LOUIS, WASHINGTON, EDWARDSVILLE, UNION, AND SALEM
152 PM CDT TUE JUL 28 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING
* WHAT...HEAT INDEX VALUES UP TO 104.
* WHERE...IN ILLINOIS, BOND IL, CLINTON IL, MARION IL, AND MADISON IL
COUNTIES. IN MISSOURI, OSAGE MO, FRANKLIN MO, GASCONADE MO, SAINT
CHARLES MO, SAINT LOUIS CITY MO, AND SAINT LOUIS MO COUNTIES.
* WHEN...UNTIL 7 PM CDT 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. YOUNG CHILDREN AND
PETS SHOULD NEVER BE LEFT UNATTENDED IN VEHICLES UNDER ANY
CIRCUMSTANCES. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME
OUTSIDE. WHEN POSSIBLE RESCHEDULE STRENUOUS ACTIVITIES TO EARLY
MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION
AND HEAT STROKE. WEAR LIGHTWEIGHT AND LOOSE FITTING CLOTHING WHEN
POSSIBLE. 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.
GOSSELIN
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