650  
WWUS73 KLSX 191501  
NPWLSX  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE SAINT LOUIS MO  
1001 AM CDT MON AUG 19 2019  
 
ILZ100-101-MOZ061-063-064-200100-  
/O.NEW.KLSX.HT.Y.0005.190819T1800Z-190820T0100Z/  
MADISON 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  
1001 AM CDT MON AUG 19 2019  
 
...HEAT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM CDT  
THIS EVENING...  
 
THE NATIONAL WEATHER SERVICE IN SAINT LOUIS HAS ISSUED A HEAT  
ADVISORY, WHICH IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM CDT  
THIS EVENING.  
 
* HEAT INDEX VALUES...UP TO AROUND 105 DUE TO TEMPERATURES IN THE  
LOWER TO MID 90S, AND DEWPOINTS IN THE MID 70S.  
 
* TIMING...MUCH OF THIS AFTERNOON AND A PORTION OF EARLY THIS  
EVENING, BETWEEN 1 PM AND 8 PM.  
 
* 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.  
 
TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN  
POSSIBLE, RESCHEDULE STRENUOUS ACTIVITIES TO THE EARLY MORNING OR  
EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT  
STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN  
POSSIBLE AND DRINK PLENTY OF WATER.  
 
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.  
 

 
 

 
 
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