BBCNews - 21 September 2013
The typhoon has reached wind speeds of up to 240 km/h (150 mph)
Heavy rain and howling winds are lashing the northern Philippines and Taiwan as Typhoon Usagi goes through the Luzon Strait which divides them.
Villages have been evacuated, ferries suspended and flights cancelled.
Meteorologists say the storm is the most powerful this year and will bring a cumulative rainfall of 1,000mm (39in) as it heads towards China.
The authorities there have announced a red alert ahead of the expected arrival of the storm on Monday.
The US Navy's Joint Typhoon Warning Centre said on Friday that Usagi was packing sustained winds of 240 km/h (150 mph), with gusts of up to 296 km/h (185mph), making it the equivalent of a strong category four Atlantic hurricane.
