Cyclone Waka

Severe Tropical Cyclone Waka

Cyclone Waka near peak intensity shortly before moving through Tonga
Meteorological history
Formed	December 19, 2001
Dissipated	January 2, 2002
Category 4 severe tropical cyclone
10-minute sustained (FMS)
Highest winds	185 km/h (115 mph)
Highest gusts	250 km/h (155 mph)
Lowest pressure	930 hPa (mbar); 27.46 inHg
Category 3-equivalent tropical cyclone
1-minute sustained (SSHWS/JTWC)
Highest winds	185 km/h (115 mph)
Overall effects
Fatalities	1 indirect
Damage	$51.4 million (2002 USD)
Areas affected	Wallis and Futuna, Niue, Tonga; especially Vava'u, and New Zealand
IBTrACS
Part of the 2001–02 South Pacific cyclone season

Severe Tropical Cyclone Waka (Fiji Meteorological Service designation: 03F, Joint Typhoon Warning Center designation: 07P) was one of the most destructive tropical cyclones ever to affect the nation of Tonga. Waka originated within the near-equatorial trough in mid-December 2001, although the system remained disorganized for more than a week. The storm gradually matured and attained tropical cyclone status on December 29, 2001. Subsequently, Waka underwent rapid intensification in which it attained its peak intensity as a Category 4 severe tropical cyclone (Australian tropical cyclone intensity scale) on December 31, with winds of 185 km/h (115 mph). Shortly thereafter, it passed directly over Vavaʻu, Tonga, resulting in widespread damage. By January 1, 2002, the cyclone began to weaken as it underwent an extratropical transition. The remnants of Waka persisted for several more days and were last observed near the Southern Ocean on January 6, 2002.

Although the storm affected several countries along its path, Waka left the most significant losses in Tonga, where it killed one person and wrought 104.2 million paʻanga ($51.3 million USD) in damage. Hundreds of structures, including 200 in the island's largest city, and much of the nation's agriculture were destroyed. Winds in excess of 185 km/h (115 mph) battered Vava'u, defoliating nearly every tree on the island. In addition to infrastructural and public losses, the environment was also severely affected; a native species of bat lost roughly 80% of its population due to the lack of fruit. Following the storm, Tonga requested international aid to cope with the scale of damage. Due to the severity of damage, the name Waka was later retired and replaced with Wiki. According to a study by Janet Franklin et al., storms similar in intensity to Waka, on average, strike Tonga once every 33 years.^[1]