اسم ( noun )• : تعریف: an agency of the U.S. Department of Commerce that compiles data on weather conditions and issues weather warnings.
سازمان هواشناسی ملیمثال :Flood warnings were issued by the National Weather Serviceهشدار سیل توسط سازمان هواشناسی ملی صادر شد+ عکس و لینک