535  
WWGM80 PGUM 181218  
AWWGUM  
GUZ001-181430-  
 
AIRPORT WEATHER WARNING FOR GUAM INTERNATIONAL AIRPORT  
NATIONAL WEATHER SERVICE TIYAN GU  
1018 PM CHST FRI SEP 18 2026  
 
A THUNDERSTORM ADVISORY IS IN EFFECT FOR THE GUAM INTERNATIONAL  
AIRPORT UNTIL 1230 AM SATURDAY MORNING. THUNDERSTORMS ARE POSSIBLE  
OR OCCURRING WITHIN 20 NAUTICAL MILES OF THE AIRPORT.  
 
BE ALERT AND TAKE PRECAUTIONS AS REQUIRED. THESE STORMS HAVE BEEN  
PRODUCING OCCASIONAL LIGHTNING.  
 

 
 
JAW  
 
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