Should a Tropical Depression intensify to the south of 25 Â S between 160 Â E and 120 Â W , it will be named in conjunction with the Fijian national weather service by the New Zealand 's national weather service . Should a Tropical Depression intensify to the south of 25 Â S between 160 Â E and 120 Â W , it will be named in conjunction with RSMC Nadi by the Tropical Cyclone Warning Center in Wellington , New Zealand ( TCWC Wellington ) .