390  
WWGM80 PGUM 210710  
AWWGUM  
GUZ001-210900-  
 
AIRPORT WEATHER WARNING FOR GUAM INTERNATIONAL AIRPORT  
NATIONAL WEATHER SERVICE TIYAN GU  
510 PM CHST TUE OCT 21 2025  
 
A THUNDERSTORM ADVISORY IS IN EFFECT FOR THE GUAM INTERNATIONAL  
AIRPORT UNTIL 700 PM THIS EVENING. 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.  
 
AN AIRPORT WIND ADVISORY IS ALSO IN EFFECT FOR THE GUAM INTERNATIONAL  
AIRPORT UNTIL 700 PM THIS EVENING. EXPECT WINDS FROM THE SE OR 130  
DEGREES AT 20 TO 25 KNOTS WITH GUSTS TO 35 KNOTS  
POSSIBLE...ESPECIALLY IN HEAVY SHOWERS.  
 

 
 
MONTVILA  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab GU Page Main Text Page