Two people in Vietnam have been killed, and two others are missing, after Typhoon Son-Tinh made landfall in the north of the country.
Thousands of homes have also been damaged by the typhoon which is generating winds of up to 140 kilometres per hour and causing torrential rains.
It is the biggest typhoon to hit Vietnam since the start of the storm season.
Around 100,000 people were evacuated before the typhoon hit Vietnam on Sunday.
Southern China has also been lashed by heavy rain and gales since yesterday.
The storm dumped a metre of water on China's Guang-xi region.
Before hitting Vietnam, Typhoon Son-Tinh killed at least 27 people and left nine others missing as it swept through the Philippines.
Vietnam is hit by an average of eight to 10 tropical storms every year, often causing heavy material and human losses.
© ABC 2012
12:26 EDT Thunderstorms have rolled through Melbourne this morning bringing heavy rain, and are set to become more widespread this afternoon.