When a tropical depression intensifies into a tropical cyclone between the Equator and 10 Â S and between 90 Â E and 125 Â E then it will be named by the Indonesian national weather service . Should a tropical low intensify into a tropical cyclone between the Equator and 10 Â S and between 141 Â E and 160 Â E are assigned names by the Tropical Cyclone Warning Center in Port Moresby , Papua New Guinea . When a tropical low intensifies into a tropical cyclone between the equator and 10 Â S and between 141 Â E - 160 Â E then it will be named by the Tropical Cyclone Warning Centers in Port Moresby , New Guinea .