Cyclone Mahina strikes Bathurst Bay, deadliest natural disaster in Australia

Background. Bathurst Bay, located in the Shire of Cook, Queensland, served as a base for the pearling fleet in the 19th century. A fleet based at Thursday Island was anchored in or near the bay prior to the storm. The settlement and the pearling operations were vulnerable to the extreme weather conditions of the region, which later became a tourist attraction near the Great Barrier Reef.

Storm Intensity and Surge. Cyclone Mahina is potentially the most intense tropical cyclone ever recorded in the Southern Hemisphere. The Australian Bureau of Meteorology estimates a peak central pressure of 914 hPa, while the World Meteorological Organization is considering an application to upgrade this to 880 hPa based on post-storm analysis; the 880 hPa value is not yet official. The storm produced a reported 9-metre surge, with a separate account of a reported 13-metre surge sweeping across Princess Charlotte Bay and inland about 5 kilometres.

Impact and Casualties. The cyclone destroyed the pearling fleet and the settlement at Bathurst Bay. In September 1899, the Queensland Marine Department published a list of 247 known fatalities. The Queensland Registry of Births, Deaths and Marriages records 283 registered deaths, including 250 on pearling ships. The event is cited as the deadliest cyclone in recorded Australian history.