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.

Storm No. 3, internationally known as Typhoon Wipha, passed north of China’s Leizhou Peninsula on the morning of July 21 and entered the northern Gulf of Tonkin, posing a growing threat to Vietnam’s northern and north-central coastal regions,