 Heavy rain from a tropical depression hit northern and north-central Vietnam, causing flooding that halted traffic in the capital Hanoi and sparked warnings of landslides on September 28.Some Hanoi districts recorded up to 250 mm of rain on Thursday morning. According to the National Weather Center, flooding has become more frequent in Hanoi as the road and the drainage system struggled to accommodate a rapidly growing population in Vietnam is prone to destructive storms and flooding, with 451. People killed or missing last year in natural disasters such as floods and landslides, according to government statistics.