sentences:  The storm however, was not at Tropical Cyclone strength when it crossed the area, but was still a tropical depression, in which the Perth TCWC began issuing shipping warnings.On 27 December, the Tropical Cyclone Warning Centre (TCWC) in Perth identified a Tropical Low near 11.2°S and 117.2°E, and began issuing shipping warnings for the developing system.Early on 28 December, the TCWC in Perth upgraded the tropical low to a tropical cyclone and named it Melanie.