The Pacific island of Tahiti is on red alert as a powerful cyclone approaches.
Cyclone Oli, upgraded overnight from a tropical storm, is expected to bring seven-metre waves and is already menacing Bora Bora and Maupiti in the French Polynesian Leeward Islands.
About 650 tourists are trapped on Bora Bora as winds of more than 120 kilometres an hour sweep the island.
Residents have been told to head to solid buildings such as town halls, schools or churches.
© ABC 2010
20:25 EDT A dwindling number of volunteers is collecting some of the weather bureau's most important data from across South Australia.