High Quality Content by WIKIPEDIA articles! Severe Tropical Cyclone Vaianu (RSMC Nadi designation: 12F, JTWC designation: 11P) was the fourth named tropical cyclone of the 2005–06 South Pacific cyclone season. The system formed on February 11, and moved generally towards the south throughout its life. Vaianu ultimately peaked with winds corresponding to Category 1 status on the Saffir-Simpson Hurricane Scale, and passed between Fiji and Tonga. Moving into cooler waters, the storm dissipated on February 16. Although the cyclone avoided land for the most part, it caused heavy rainfall and gusty winds in portions of Tonga. Flooding hit the capital city of Nuku`alofa, and on some islands, the storm destroyed crops.