Dvorak technique
On 3 December, TCWC Perth reported that Tropical Low 01U had developed over open water to the southwest of Cocos (Keeling) Islands, after various applications of the Dvorak technique had produced results between T2.0 and T3.0. They also reported that the low could develop into a tropical cyclone during the following six to twelve hours, however, TCWC Perth issued its final advisory on the system during the next day as the system was not likely to develop into a tropical cyclone and had started weakening.