Timeline of the 2003–04 South Pacific cyclone season

[1] Within the South Pacific, tropical cyclones are monitored by the Regional Specialized Meteorological Center (RSMC) in Nadi, Fiji, and the Tropical Cyclone Warning Center (TCWC) in Wellington, New Zealand.

RSMC Nadi attaches a number and an F suffix to tropical disturbances that form in or move into the South Pacific.

RSMC Nadi and TCWC Wellington both use the Australian Tropical Cyclone Intensity Scale, and measure windspeeds over a period of ten minutes, while the JTWC measures sustained winds over a period of one minute and uses the Saffir–Simpson Hurricane Scale.

This timeline includes information from post-storm reviews by RSMC Nadi, TCWC Wellington and the JTWC.

It documents tropical cyclone formations, strengthening, weakening, landfalls, extratropical transitions, and dissipations during the season.

Image of Tropical Depression 01F on December 4, 2003
Image of Cyclone Heta on January 6, 2004.
Image of Severe Tropical Cyclone Heta on January 6, 2004
Heta formed in the upper center of the map before moving generally northeastward. The storm then curved to the southeast and continued on that course until it became extratropical.
Track map of Severe Tropical Cyclone Heta
Ivy formed in the upper center of the map and completed a loop before curving towards the southeast and becoming extratropical near New Zealand.
Track map of Severe Tropical Cyclone Ivy
Image of Severe Tropical Cyclone Ivy on February 27, 2004
Image of Tropical Cyclone Grace on March 22, 2004
Tropical Cyclone 10F (22P) formed in the upper left and traveled generally towards the southeast before it dissipated.
Track map of Tropical Depression 10F (22P)
Image of Tropical Depression 10F (22P) approaching landfall on April 7, 2004