'Super Typhoon' Usagi heads for Hong Kong Preparation begins ... A worker helps to remove tourist boats as they secure the area before Typhoon Usagi reaches the southeast coastal regions of the island, in Hsintien in New Taipei City. Taipei, Taiwan: The most powerful typhoon of the year approached the northern Philippines and southern Taiwan on Friday with ferocious gusts of up to 296 kilometres per hour. It was expected to skirt both regions, but authorities warned of torrential rains and destructive winds. Super Typhoon Usagi had maximum sustained winds of 240 kph on Friday evening and was about 600 kilometres southeast of Taipei, Taiwan's capital, according to the US Navy's Joint Typhoon Warning Centre. A storm achieves super typhoon status when its sustained winds are at least 240 kph. The huge storm was on track to pass near the Batanes Islands, the northernmost part of the Philippines, as it moved across the Luzon Strait, close to Taiwan's southernmost Hengchun peninsula. This NASA Terra satellite image shows Typhoon Usagi nearing the Philippines and southern Taiwan. In Taiwan, hundreds of people were evacuated from flood-prone areas near cities and in remote mountainous regions. Torrential rains were forecast for all of the eastern coast and the south. Usagi was projected to push on toward southern China, putting Hong Kong in danger, with its outer bands slamming into the Guangdong-Hong Kong coastline on Sunday. The storm is expected to weaken, and by Sunday is projected to have maximum sustained winds of 158 kph. Usagi had a massive diameter of 1100 kilometres, with its outer rain bands extending across the main northern Philippine island of Luzon and southern Taiwan. Forecasters predicted 24-hour rainfall accumulation of 500 millimetres near its centre. In the Philippines, the Batanes Islands were placed under the highest storm alert, while lower warnings were raised in at least 15 northern provinces where officials warned of flash floods, landslides and storm surges.