Tropical Cyclone Tatiana
Tropical cyclone Tatiana developed in the Coral Sea on February 9 2016 about 900 km to the southwest of the Solomon Islands. The system gradually developed further as it moved eastwards and was named Tropical Cyclone Tatiana by the BoM on February 10 2015. As it developed into a Category 1 tropical cyclone Tatiana started to move towards the east-southeast under the influence of monsoon flow and a trough of low pressure.
The system subsequently peaked as a Category 2 tropical cyclone with sustained winds of 95 km/h during 12 February, before it moved just out of the Australian region and into the South Pacific basin. The system subsequently moved southwards and rapidly weakened during the next day, before degenerated into a subtropical low during February 14 as the storm moved back into the Australian Basin. After the system had degenerated into a subtropical low, Ex-tropical cyclone Tatiana produced some powerful, long period swells along southeast Queensland beaches.
At the time TC Tatiana developed a second tropical cyclone also formed near Fiji. It is unusual for two tropical cyclones to be named within such a short period of time (6 hours) of each other, when they are so close to each other. Usually tropical cyclones require at least 15 degrees of longitude between each TC formation. TC Tatiana and TC Winston both formed dispite this, TC Winston developed into a much larger category 5 tropical cyclone.