WEPA40 RJTD 180740 TSUNAMI BULLETIN ISSUED BY JMA ORIGIN TIME 2254Z 16 SEP PRELIMINARY EPICENTER LAT31.5S. LONG72.0W. WESTERN SOUTH AMERICA FOCAL DEPTH ///KM. MAG8.3 TSUNAMI ATTENTION FOR JAPAN ISSUED BY JMA WAS ALL CLEARED AT 0740Z 18 SEP NO FURTHER ACTIONS WILL BE TAKEN=