030  
WWCA72 TJSJ 311629  
NPWSJU  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1229 PM AST SAT MAY 31 2025  
 
PRZ001-005-008-010-312000-  
/O.CON.TJSJ.HT.Y.0004.000000T0000Z-250531T2000Z/  
SAN JUAN AND VICINITY-NORTH CENTRAL-NORTHWEST-MAYAGUEZ AND  
VICINITY-  
INCLUDING THE CITIES OF MOCA, BARCELONETA, VEGA ALTA,  
HORMIGUEROS, SAN GERMAN, SAN JUAN, ANASCO, RINCON, VEGA BAJA,  
GUAYNABO, FLORIDA, MANATI, CAROLINA, MAYAGUEZ, AGUADA, TOA ALTA,  
ISABELA, TOA BAJA, DORADO, QUEBRADILLAS, CAMUY, CATANO, TRUJILLO  
ALTO, AGUADILLA, HATILLO, ARECIBO, AND BAYAMON  
1229 PM AST SAT MAY 31 2025  
   
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 4 PM AST THIS AFTERNOON  
 
* WHAT...THIS LEVEL OF HEAT AFFECTS MOST INDIVIDUALS SENSITIVE TO  
HEAT, ESPECIALLY THOSE WITHOUT EFFECTIVE COOLING AND/OR ADEQUATE  
HYDRATION. THOSE EXTREMELY SENSITIVE TO HEAT FACE THE HIGHEST  
RISK. SOME HEALTH SYSTEMS AND HEAT-SENSITIVE INDUSTRIES COULD BE  
AFFECTED. THESE CONDITIONS ARE MOST LIKELY ACROSS THE URBAN AND  
COASTAL AREAS.  
 
* WHERE...MAYAGUEZ AND VICINITY, NORTH CENTRAL, NORTHWEST, AND SAN  
JUAN AND VICINITY COUNTIES.  
 
* WHEN...UNTIL 4 PM AST THIS AFTERNOON.  
 
* 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.  
 
TAKE EXTRA PRECAUTIONS WHEN OUTSIDE. WEAR LIGHTWEIGHT AND LOOSE  
FITTING CLOTHING. TRY TO LIMIT STRENUOUS ACTIVITIES TO EARLY MORNING  
OR EVENING. TAKE ACTION WHEN YOU SEE SYMPTOMS OF HEAT EXHAUSTION AND  
HEAT STROKE.  
 
 
 
 
 
MRR  
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