Heavy storms in northern Vietnam have left one person dead and another missing, as Wipha weakened from a tropical storm into a depression.

Tropical storm Wipha weakened after making landfall in northern Vietnam on Tuesday, with authorities on alert due to heavy rains that could cause flooding and mudslides, as the Philippines struggled with monsoon downpours that began last week.

Tropical Storm Wipha made a second landfall in Vietnam on Tuesday, after lashing China earlier, bringing torrential rain and strong winds as authorities rushed to evacuate low-lying areas and warned of possible floods and landslides.