668  
WWUS73 KLSX 181213  
NPWLSX  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE ST LOUIS MO  
713 AM CDT MON AUG 18 2025  
 
ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-  
034>036-041-042-047>052-059>065-072>075-084-085-099-190100-  
/O.CON.KLSX.HT.Y.0003.000000T0000Z-250819T0100Z/  
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-MADISON IL-SAINT CLAIR IL-MONROE 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-SAINT CHARLES MO-FRANKLIN MO-  
SAINT LOUIS MO-SAINT LOUIS CITY MO-JEFFERSON MO-CRAWFORD MO-  
WASHINGTON MO-SAINT FRANCOIS MO-SAINTE GENEVIEVE MO-IRON MO-  
MADISON MO-REYNOLDS MO-  
INCLUDING THE CITIES OF SALEM, SAINT LOUIS, SAINT CHARLES,  
CAHOKIA, MEXICO, ALTON, FULTON, JEFFERSON CITY, EDWARDSVILLE,  
COLUMBIA, UNION, FARMINGTON, HANNIBAL, QUINCY, CENTRALIA, SPARTA,  
BOWLING GREEN, BELLEVILLE, CHESTER, MOUNT STERLING, VANDALIA,  
SULLIVAN, LITCHFIELD, PITTSFIELD, AND WASHINGTON  
713 AM CDT MON AUG 18 2025  
   
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING
 
 
* WHAT...HEAT INDEX VALUES UP TO 108.  
 
* WHERE...PORTIONS OF SOUTH CENTRAL, SOUTHWEST, AND WEST CENTRAL  
ILLINOIS AND CENTRAL, EAST CENTRAL, NORTHEAST, AND SOUTHEAST  
MISSOURI.  
 
* WHEN...UNTIL 8 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.  
 
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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