866  
WWGM80 PGUM 180517  
AWWGUM  
GUZ001-180730-  
 
AIRPORT WEATHER WARNING FOR GUAM INTERNATIONAL AIRPORT  
NATIONAL WEATHER SERVICE TIYAN GU  
317 PM CHST TUE AUG 18 2026  
 
THE THUNDERSTORM ADVISORY PREVIOUSLY IN EFFECT UNTIL 400 PM CHST HAS  
BEEN CANCELLED.  
 
ISLAND-EFFECT SHOWERS HAVE DISSIPATED EARLIER THAN PREVIOUSLY  
ANTICIPATED. IF THESE SHOWERS AND THE RISK OF LIGHTNING RESUMES, A  
NEW THUNDERSTORM ADVISORY WILL BE ISSUED.  
 

 
 
MESA  
 
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