Bbc.co.uk reports that...
The Philippines and Taiwan are braced for Typhoon Usagi, which meteorologists say could become the most powerful typhoon of 2013.
The typhoon was 560km (350 miles) east-southeast of Taiwan and 360km from the northern Philippines on Friday morning, weather officials said.
Both Taiwan and the Philippines have issued alerts and warned boats to exercise caution.
The tropical hurricane is expected to hit China over the weekend.