000 WWGM80 PGUM 142255 AWWGUM GUZ001-150100- AIRPORT WEATHER WARNING FOR GUAM INTERNATIONAL AIRPORT NATIONAL WEATHER SERVICE TIYAN GU 852 AM ChST Sun Apr 15 2018 THE THUNDERSTORM ADVISORY ISSUED EARLIER FOR THE GUAM INTERNATIONAL AIRPORT HAS BEEN EXTENDED TO 1100 AM LATER MORNING. THUNDERSTORMS REMAIN POSSIBLE WITHIN 20 NAUTICAL MILES OF THE AIRPORT. BE ALERT AND TAKE PRECAUTIONS AS REQUIRED. $$ CHAN