456  
WGCA52 TJSJ 010421  
FFWSJU  
PRC015-095-109-151-010715-  
/O.NEW.TJSJ.FF.W.0028.260901T0421Z-260901T0715Z/  
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/  
 
BULLETIN - EAS ACTIVATION REQUESTED  
FLASH FLOOD WARNING  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1221 AM AST TUE SEP 1 2026  
 
THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A  
 
* FLASH FLOOD WARNING FOR...  
ARROYO, MAUNABO, PATILLAS, YABUCOA...  
 
* UNTIL 315 AM AST.  
 
* AT 1221 AM AST, DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING  
HEAVY RAIN ACROSS THE WARNED AREA. BETWEEN 1 AND 3 INCHES OF RAIN  
HAVE FALLEN. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE  
POSSIBLE IN THE WARNED AREA. FLASH FLOODING IS ONGOING OR EXPECTED  
TO BEGIN SHORTLY.  
 
HAZARD...FLASH FLOODING CAUSED BY THUNDERSTORMS.  
 
SOURCE...RADAR INDICATED.  
 
IMPACT...FLASH FLOODING OF SMALL CREEKS AND STREAMS, URBAN AREAS,  
HIGHWAYS, STREETS AND UNDERPASSES AS WELL AS OTHER POOR  
DRAINAGE AND LOW-LYING AREAS.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
TURN AROUND, DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD  
DEATHS OCCUR IN VEHICLES.  
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE  
DANGERS OF FLOODING.  
 
PLEASE REPORT OBSERVED FLOODING TO LOCAL EMERGENCY SERVICES OR LAW  
ENFORCEMENT AND REQUEST THEY PASS THIS INFORMATION TO THE NATIONAL  
WEATHER SERVICE WHEN YOU CAN DO SO SAFELY.  
 
 
 
LAT...LON 1806 6609 1808 6606 1811 6605 1810 6602  
1808 6601 1809 6599 1809 6593 1812 6593  
1813 6591 1811 6588 1812 6585 1808 6583  
1807 6580 1805 6584 1802 6583 1797 6594  
1798 6602 1796 6606 1800 6607 1802 6609  
 
FLASH FLOOD...RADAR INDICATED  
 
 
 
YZR  
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