The National Oceanic Forecast Office issued a blue wave warning at 08:00 on April 29: Due to the combined effects of low pressure and cold air in the East China Sea, it is expected that from the morning of April 29 to the morning of the 30th, a large wave area of 2.5 to 3.8 meters will occur in the southwestern part of the East China Sea; moderate to large waves of 1.8 to 2.8 meters will occur in the coastal waters of Zhejiang, and the wave warning level for coastal waters is blue.

The National Oceanic Forecast Office issued a blue wave warning at 08:00 on April 29: Due to the combined effects of low pressure and cold air in the East China Sea, it is expected that from the morning of April 29 to the morning of the 30th, a large wave area of 2.5 to 3.8 meters will occur in the southwestern part of the East China Sea; moderate to large waves of 1.8 to 2.8 meters will occur in the coastal waters of Zhejiang, and the wave warning level for coastal waters is blue.