1974–75 Australian region cyclone season
cyclone season in the Australian region
The 1974–75 Australian region cyclone season was an above average, and destructive tropical cyclone season, notable for producing Severe Tropical Cyclone Tracy, a small, yet powerful storm, which destroyed the majority of buildings inside of Darwin upon landfall, during December 25 1974.
Systems
Tropical Cyclone Marcia
The first named storm of the season developed as a small depression out over the open waters of the southern Indian Ocean. Over the following three days, the system gradually developed into a tropical cyclone as it tracked towards the southeast. On 18 October, a ship named Alkuwait encountered the storm and reported winds near hurricane-force; however, the satellite presentation of the system was not supportive of these winds. Later named Marcia, the storm is estimated to have attained peak winds around 85 km/h (55 mph) on 20 October. Around this time Marcia also attained a barometric pressure of 989 mbar (hPa; 29.2 inHg). The following day, as the storm was situated 320 km (200 mi) west-southwest of the Cocos Islands, the outer bands of Marcia brought unsettled weather to the islands. On 22 October, the storm slowed and began tracking towards the west. A weakened system, the remnants of Marcia crossed 90°E into the South-West Indian Ocean basin.
Tropical Cyclone Norah
Cyclone Norah existed over the eastern Indian Ocean from October 28 to November 4.
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