Severe Tropical Cyclone Marcus was a very powerful tropical cyclone that struck Australia's Northern Territory and the Kimberley region of Western Australia in March 2018. It was the strongest tropical cyclone of the 2017–18 Australian region cyclone season, the strongest tropical cyclone in the Australian region basin since George in 2007 and is tied with Cyclone Monica as the strongest cyclone in the Australian Region in terms of 10-minute maximum sustained winds. It was also considered the worst cyclone to hit Darwin since Tracy in 1974. It was also the strongest tropical cyclone since Tracy to hit Darwin, making landfall there as a Category 2 tropical cyclone. Marcus formed on March 14 from a tropical low situated over the northeast Timor Sea, which quickly moved southeast and strengthened into a tropical cyclone the next day.

Severe Tropical Cyclone George was one of the most powerful Australian tropical cyclones on record, attaining a minimum barometric pressure of 902 mbar. It was also the strongest tropical cyclone worldwide in 2007 and the last Australian region tropical cyclone to achieve this record to date. The cyclone formed on 26 February 2007 in the Northern Territory's Top End, and intensified when it entered the Joseph Bonaparte Gulf, before crossing the northern coast of the Kimberley. It moved over the Indian Ocean, intensifying to a Category 4 cyclone, and eventually crossed the Pilbara coast just east of Port Hedland at peak intensity. After further analysis from the Bureau of Meteorology, George was reclassified to Category 5. The cyclone caused significant damage to the town of Port Hedland and numerous isolated mining camps around the town. Losses in Northern Territory amounted to at least A$12 million. Two people died and more than a dozen others were infected in a melioidosis outbreak following the Northern Territory floods. Insured damage in Western Australia amounted to $8 million, and there were three fatalities.