983  
WWCA72 TJSJ 040730  
NPWSJU  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE SAN JUAN PR  
330 AM AST FRI JUL 4 2025  
 
PRZ001>005-007-008-010-011-042000-  
/O.NEW.TJSJ.HT.Y.0011.250704T1400Z-250704T2000Z/  
SAN JUAN AND VICINITY-NORTHEAST-SOUTHEAST-EASTERN INTERIOR-NORTH  
CENTRAL-PONCE AND VICINITY-NORTHWEST-MAYAGUEZ AND VICINITY-  
SOUTHWEST-  
INCLUDING THE CITIES OF BAYAMON, TRUJILLO ALTO, CAGUAS, SAN  
LORENZO, GUANICA, LAS PIEDRAS, TOA BAJA, NAGUABO, BARCELONETA,  
FLORIDA, SALINAS, ISABELA, CEIBA, YAUCO, HORMIGUEROS, AGUAS  
BUENAS, CAYEY, GURABO, QUEBRADILLAS, JUNCOS, ANASCO, VEGA BAJA,  
LUQUILLO, RIO GRANDE, CATANO, RINCON, PENUELAS, HATILLO, VEGA  
ALTA, GUAYANILLA, GUAYAMA, ARECIBO, DORADO, SANTA ISABEL, ARROYO,  
PONCE, CIDRA, CAMUY, CABO ROJO, YABUCOA, SAN GERMAN, CANOVANAS,  
MANATI, AGUADA, CAROLINA, JUANA DIAZ, HUMACAO, SAN JUAN, TOA  
ALTA, LOIZA, AGUADILLA, LAJAS, MOCA, MAUNABO, GUAYNABO, PATILLAS,  
FAJARDO, COMERIO, AND MAYAGUEZ  
330 AM AST FRI JUL 4 2025  
 
...HEAT ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 4 PM AST THIS  
AFTERNOON...  
 
* WHAT...THIS LEVEL OF HEAT AFFECT MOST INDIVIDUALS SENSITIVE TO  
HEAT, ESPECIALLY THOSE WITHOUT EFFECTIVE COOLING AND/OR ADEQUATE  
HYDRATION. IMPACTS POSSIBLE IN SOME HEALTH SYSTEM AND IN  
HEAT-SENSITIVE INDUSTRIES.  
 
* WHERE...ALL LOW-ELEVATED URBAN AREAS, AS WELL AS THE URBAN AREAS  
OF THE EASTERN INTERIOR IN PUERTO RICO.  
 
* WHEN...FROM 10 AM THIS MORNING TO 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.  
 

 
 

 
 
ERG  
 
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