No storms formed in Darwin region during the 1999-2000 season. However, Cyclone Steve was named by TCWC Brisbane before passing through the warning area of Darwin. Additionally, the Tropical Cyclone Warning Centre in Port Moresby, Papua New Guinea reserves the right to name cyclones that develop in the Solomon Sea and Gulf of Papua, north of 10°S between 141°E and 160°E. Names are selected randomly from their list and retired once they are used. No cyclones were named by this warning centre during the 1999-00 season.