953
WWUS73 KLSX 270643
NPWLSX
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
143 AM CDT MON JUL 27 2026
ILZ058>060-064-065-069-070-074-079-095>099-MOZ018-019-026-027-
034>036-041-042-047>052-059-060-062-072>075-084-085-099-272145-
/O.CON.KLSX.XH.W.0002.000000T0000Z-260728T0200Z/
GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL-
MARION IL-WASHINGTON IL-RANDOLPH IL-ADAMS IL-BROWN IL-PIKE IL-
CALHOUN IL-JERSEY IL-KNOX MO-LEWIS MO-SHELBY MO-MARION MO-MONROE
MO-RALLS MO-PIKE MO-BOONE MO-AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE
MO-CALLAWAY MO-MONTGOMERY MO-LINCOLN MO-GASCONADE MO-WARREN MO-
FRANKLIN MO-CRAWFORD MO-WASHINGTON MO-SAINT FRANCOIS MO-SAINTE
GENEVIEVE MO-IRON MO-MADISON MO-REYNOLDS MO-
INCLUDING THE CITIES OF SPARTA, PITTSFIELD, SULLIVAN, UNION,
JEFFERSON CITY, FULTON, HANNIBAL, VANDALIA, MOUNT STERLING, MEXICO,
FARMINGTON, WASHINGTON, LITCHFIELD, CHESTER, CENTRALIA, SALEM,
COLUMBIA, QUINCY, AND BOWLING GREEN
143 AM CDT MON JUL 27 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS
EVENING...
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES UP TO 113.
* WHERE...PORTIONS OF SOUTH CENTRAL, SOUTHWEST, AND WEST CENTRAL
ILLINOIS AND CENTRAL, EAST CENTRAL, NORTHEAST, AND SOUTHEAST
MISSOURI.
* WHEN...UNTIL 9 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.
ILZ100>102-MOZ061-063>065-272145-
/O.CON.KLSX.XH.W.0002.000000T0000Z-260728T0200Z/
MADISON IL-SAINT CLAIR IL-MONROE IL-SAINT CHARLES MO-SAINT LOUIS
MO-SAINT LOUIS CITY MO-JEFFERSON MO-
INCLUDING THE CITIES OF EDWARDSVILLE, BELLEVILLE, CAHOKIA, ALTON,
SAINT LOUIS, AND SAINT CHARLES
143 AM CDT MON JUL 27 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS
EVENING...
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES UP TO 115.
* WHERE...IN ILLINOIS, MADISON IL, MONROE IL, AND SAINT CLAIR IL
COUNTIES. IN MISSOURI, JEFFERSON MO, SAINT CHARLES MO, SAINT LOUIS
CITY MO, AND SAINT LOUIS MO COUNTIES.
* WHEN...UNTIL 9 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.
PEOPLE IN THE SAINT LOUIS METROPOLITAN AREA CAN GET INFORMATION ABOUT
COOLING CENTERS OR ENERGY ASSISTANCE RELATED TO THE EXCESSIVE HEAT BY
CALLING THE UNITED WAY OF GREATER SAINT LOUIS AT 800-427-4626, OR IF
CALLING FROM A LAND LINE PHONE DIAL 2-1-1. YOU CAN ALSO CALL COOL
DOWN SAINT LOUIS AT 314-241-7668.
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