084  
WWUS75 KTWC 172144  
NPWTWC  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE TUCSON AZ  
244 PM MST SAT AUG 17 2019  
 
AZZ501-502-504>506-509-181200-  
/O.CON.KTWC.EH.W.0004.190820T1800Z-190822T0300Z/  
WESTERN PIMA COUNTY-TOHONO O'ODHAM NATION-TUCSON METRO AREA-  
SOUTH CENTRAL PINAL COUNTY-SOUTHEAST PINAL COUNTY-  
UPPER GILA RIVER VALLEY-  
INCLUDING THE CITIES OF AJO, ORGAN PIPE CACTUS N.M., SELLS,  
TUCSON, MARANA, VAIL, PICACHO PEAK STATE PARK, MAMMOTH, ORACLE,  
AND SAFFORD  
244 PM MST SAT AUG 17 2019  
 
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TUESDAY TO  
8 PM MST WEDNESDAY...  
 
* IMPACTS...INCREASE IN HEAT RELATED ILLNESSES, INCLUDING HEAT  
CRAMPS, HEAT EXHAUSTION, AND HEAT STROKE. HEAT STROKE CAN LEAD  
TO DEATH.  
 
* AFFECTED AREAS...TUCSON METRO, SOUTHEAST PINAL COUNTY, MARANA,  
VAIL, MAMMOTH, ORACLE, AND SAFFORD AS WELL AS THE WESTERN  
DESERTS INCLUDING SELLS, AJO AND ORGAN PIPE NATIONAL MONUMENT.  
 
* TEMPERATURES...108 TO 113 DEGREES.  
 
* FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT  
WEATHER.GOV/TUCSON AND CLICK ON THE DETAILED HAZARDS ICON  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF  
EXTREMELY HOT TEMPERATURES WILL OCCUR. 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 LIGHT  
WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY  
OF WATER.  
 
THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS  
THESE ADDITIONAL STEPS TO REDUCE RISK DURING OUTDOOR WORK...  
SCHEDULE 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 911.  
 

 
 

 
 
VISIT US ON FACEBOOK...TWITTER...YOUTUBE...AND AT WEATHER.GOV/TUCSON  
 
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