Cyclone Heta - Meteorological History

Meteorological History

Heta formed from a tropical wave between Rotuma and Fiji on December 25, 2003. It moved eastward to a position north of Fiji, where it was designated Tropical Depression 3-F on December 28. The depression migrated first northward and then eastward until January 2, 2004, when it reached tropical storm strength and was named Heta. At this point, low wind shear and high sea surface temperatures caused Heta to intensify rapidly. On January 3, Heta, aided by a weak steering current, slowly began to move to the southeast as it became a Category 1 hurricane.

The center of Heta passed 70 miles (110 km) west of Samoa as the storm reached Category 2 status. Heta reached a peak intensity of 160 mph (235 km/h) and maintained it for 24 hours as it continued its south-southeastward track. By that time, Heta was centered 50 miles (80 km) northeast of Tonga, close to the island of Niue. By January 7, Cyclone Heta had exited the Nadi RMSC's area of responsibility and entered that of the Tropical Cyclone Warning Center at Wellington, New Zealand. The storm slowly weakened as it encountered the cooler waters of the far South Pacific. Heta became extratropical 525 miles (845 km) south of the island of Rarotonga later on the 7th. These remnants of Heta slowed even further and moved westward, where they finally dissipated on January 11 east of Norfolk Island.