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Three tropical cyclones occurred over the western North Pacific and the South China Sea in July 2009, two of which necessitated the issuance of tropical cyclone warning signals in Hong Kong.
Tropical Depression Soudelor formed over the South China Sea about 700 km east-southeast of Hong Kong on 10 July and moved west-northwestwards across the northern part of the South China Sea. It intensified into a tropical storm on the afternoon of 11 July. Soudelor crossed the southern tip of the Leizhou Peninsula on the morning of 12 July and entered Beibu Wan that afternoon. It made landfall over the coast of northern Vietnam and weakened into a tropical depression that evening. Soudelor further weakened into an area of low pressure over northern Vietnam that night.
A tropical depression formed over the western North Pacific about 180 km east of Gaoxiong on the morning of 13 July and moved generally northwestwards. It made landfall over the coast of southeastern Taiwan and moved across southern Taiwan that afternoon. The tropical depression entered the Taiwan Strait that night. It made landfall over the coastal areas of Fujian and weakened into an area of low pressure on the morning of 14 July.
Tropical Depression Molave formed over the western North Pacific about 670 km east of Manila on 15 July and moved generally northwestwards. It intensified into a tropical storm the next day. While crossing the Luzon Strait on 17 July, Molave intensified into a severe tropical storm in the afternoon. It entered the South China Sea and turned to move west-northwestwards that night. Molave intensified into a typhoon on the morning of 18 July. On the early hours of 19 July, Molave made landfall over Dapeng Peninsula, Shenzhen and weakened into a severe tropical storm. It moved across western Guangdong and weakened into a tropical storm in the morning. Molave weakened into a tropical depression that afternoon and subsequently into an area of low pressure over Guangxi at night.
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