CCTV News: According to the official account of the Ministry of Natural Resources, affected by the 21st Typhoon "Medham" this year, storm surges and catastrophic waves will occur along the coasts of Guangdong, Hainan and Guangxi. The National Marine Environmental Forecasting Center issued an orange storm surge alarm and a yellow storm wave alarm at 8:00 on October 4, and was upgraded to a double red storm surge alarm at 16:00.

According to the "Marine Disaster Emergency Plan", the Ministry of Natural Resources launched a third-level emergency response to marine disasters at 8:00 on October 4, and adjusted the emergency response to marine disasters in Guangdong and Hainan to level 2 at 17:00. Affected by the typhoon and storm surge, it is expected that the risk of seawater backflow in coastal low-lying areas in Maoming City, Guangdong Province and Wenchang City, Hainan Province is high on the morning of the 5th; around noon on the 5th, the risk of seawater backflow in coastal low-lying areas in Zhanjiang City, Guangdong Province and Haikou City, Hainan Province is high, and local governments are reminded to take effective measures in advance to prevent and respond to marine disaster risks.