893  
WWUS73 KLSX 280840  
NPWLSX  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE SAINT LOUIS MO  
340 AM CDT TUE AUG 28 2018  
 
ILZ100>102-MOZ061-063>065-282200-  
/O.CON.KLSX.EH.W.0003.000000T0000Z-180829T0000Z/  
JEFFERSON MO-MADISON IL-MONROE IL-SAINT CHARLES MO-SAINT CLAIR IL-  
SAINT LOUIS CITY MO-SAINT LOUIS MO-  
INCLUDING THE CITIES OF ALTON, BELLEVILLE, CAHOKIA, EDWARDSVILLE,  
SAINT CHARLES, AND SAINT LOUIS  
340 AM CDT TUE AUG 28 2018  
 
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS  
EVENING...  
 
* TIMING...DANGEROUS LEVELS OF HEAT AND HUMIDITY ARE EXPECTED  
AGAIN THIS AFTERNOON.  
 
* HEAT INDEX VALUES...PEAKING BETWEEN 103 AND 107 THIS AFTERNOON.  
 
* IMPACTS...THE HEAT AND HUMIDITY MAY CAUSE HEAT STRESS DURING  
OUTDOOR EXERTION OR EXTENDED EXPOSURE. THE VERY YOUNG, THE  
ELDERLY, THOSE WITHOUT AIR CONDITIONING, AND THOSE  
PARTICIPATING IN STRENUOUS OUTDOOR ACTIVITIES WILL BE THE MOST  
SUSCEPTIBLE. ALSO, CAR INTERIORS CAN REACH LETHAL TEMPERATURES  
IN A MATTER OF MINUTES.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF  
DANGEROUSLY HOT TEMPERATURES AND HIGH HUMIDITY WILL OCCUR. IN  
ADDITION, NIGHTTIME CONDITIONS WILL REMAIN WARM AND MUGGY  
PROVIDING LITTLE CHANCE FOR RELIEF. THIS COMBINATION WILL CREATE  
A DANGEROUS SITUATION IN WHICH HEAT-RELATED ILLNESSES ARE LIKELY,  
ESPECIALLY FOR THOSE LIVING IN UN-AIR CONDITIONED HOMES OR  
APARTMENTS. PEOPLE IN THE WARNING AREA ARE ADVISED TO AVOID  
POORLY VENTILATED AREAS AND PROLONGED WORK IN THE SUN. USE AIR  
CONDITIONING IN YOUR HOUSE OR APARTMENT IF IT IS WORKING  
CORRECTLY. IF YOU DO NOT HAVE AIR CONDITIONING, KEEP YOUR HOUSE  
OR APARTMENT WELL VENTILATED WITH FANS, AND TRY TO SPEND SOME  
TIME IN AN AIR CONDITIONED ENVIRONMENT TO GIVE YOUR BODY A BREAK  
FROM THE HEAT.  
 
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 IMMEDIATELY.  
 
WHERE'S BABY? LOOK BEFORE YOU LOCK! YOUNG CHILDREN AND PETS  
SHOULD NEVER BE LEFT UNATTENDED IN VEHICLES UNDER ANY  
CIRCUMSTANCES. THIS IS ESPECIALLY TRUE DURING WARM OR HOT WEATHER  
WHEN CAR INTERIORS CAN REACH LETHAL TEMPERATURES IN A MATTER OF  
MINUTES.  
 
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.  
 

 
 

 
 
ILZ058>060-064-065-069-070-074-079-095>099-MOZ018-019-026-027-  
034>036-041-042-047>052-059-060-062-282200-  
/O.CON.KLSX.HT.Y.0006.000000T0000Z-180829T0000Z/  
ADAMS IL-AUDRAIN MO-BOND IL-BOONE MO-BROWN IL-CALHOUN IL-  
CALLAWAY MO-CLINTON IL-COLE MO-FAYETTE IL-FRANKLIN MO-  
GASCONADE MO-GREENE IL-JERSEY IL-KNOX MO-LEWIS MO-LINCOLN MO-  
MACOUPIN IL-MARION IL-MARION MO-MONITEAU MO-MONROE MO-  
MONTGOMERY IL-MONTGOMERY MO-OSAGE MO-PIKE IL-PIKE MO-RALLS MO-  
RANDOLPH IL-SHELBY MO-WARREN MO-WASHINGTON IL-  
INCLUDING THE CITIES OF BOWLING GREEN, CENTRALIA, CHESTER,  
COLUMBIA, FULTON, HANNIBAL, JEFFERSON CITY, LITCHFIELD, MEXICO,  
MOUNT STERLING, PITTSFIELD, QUINCY, SALEM, SPARTA, SULLIVAN,  
UNION, VANDALIA, AND WASHINGTON  
340 AM CDT TUE AUG 28 2018  
   
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING
 
 
* TIMING...DANGEROUS LEVELS OF HEAT AND HUMIDITY ARE EXPECTED  
AGAIN THIS AFTERNOON.  
 
* HEAT INDEX VALUES...PEAKING BETWEEN 100 AND 104 THIS AFTERNOON.  
 
* IMPACTS...THE HEAT AND HUMIDITY MAY CAUSE HEAT STRESS DURING  
OUTDOOR EXERTION OR EXTENDED EXPOSURE. THE VERY YOUNG, THE  
ELDERLY, THOSE WITHOUT AIR CONDITIONING, AND THOSE  
PARTICIPATING IN STRENUOUS OUTDOOR ACTIVITIES WILL BE THE MOST  
SUSCEPTIBLE. ALSO, CAR INTERIORS CAN REACH LETHAL TEMPERATURES  
IN A MATTER OF MINUTES.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A HEAT ADVISORY MEANS THAT A PERIOD OF HOT TEMPERATURES AND HIGH  
HUMIDITY WILL OCCUR. THIS COMBINATION WILL CREATE A SITUATION IN  
WHICH HEAT-RELATED ILLNESSES ARE POSSIBLE, ESPECIALLY FOR THOSE  
LIVING IN UN-AIR CONDITIONED HOMES OR APARTMENTS. PEOPLE IN THE  
ADVISORY AREA ARE ADVISED TO AVOID POORLY VENTILATED AREAS AND  
PROLONGED WORK IN THE SUN. ALSO, KEEP PLENTY OF LIQUIDS ON HAND  
AND TRY TO STAY IN AN AIR CONDITIONED ENVIRONMENT.  
 
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 IMMEDIATELY.  
 
WHERE'S BABY? LOOK BEFORE YOU LOCK! YOUNG CHILDREN AND PETS  
SHOULD NEVER BE LEFT UNATTENDED IN VEHICLES UNDER ANY  
CIRCUMSTANCES. THIS IS ESPECIALLY TRUE DURING WARM OR HOT WEATHER  
WHEN CAR INTERIORS CAN REACH LETHAL TEMPERATURES IN A MATTER OF  
MINUTES.  
 

 
 

 
 
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