All tropical cyclone data. U.S. National Hurricane Center Tropical outlook and warnings, also lots of information on past hurricanes. Ciclones Tropicales Spanish-language forecasts from the Cuban Institute of Meteorology. Boletines y Avisos Weather warnings page of the Mexican Meteorological Service. Central Pacific Hurricane Center In Honolulu.
Hawaiian hurricanes are fairly rare.
Hong Kong provides forecasts for the South China Sea and Taiwan Strait. Bureau of Meteorology Warnings Summary Australian weather warnings listed, including tropical storm warnings if there are any. Australia has three tropical storm prediction centers, in Brisbane, Darwin, and Perth. The World Meteorological Organization, a UN agency, has encouraged Fiji to establish a regional warnings center covering the entire South Pacific. Get a good atlas, though, because most Americans don't even know the names of the countries in this region.