The National Oceanic Forecast Office issued a blue wave warning at 08:00 on September 7: Affected by the cold air, it is expected that from the night of September 7 to the morning of September 8, large waves of 2.5 to 3.5 meters will occur in the northern Bohai Sea and the Yellow Sea; the coastal waters of western, southern and northern Shandong will experience medium to large waves of 1.8 to 2.8 meters, and the wave warning level for coastal waters is blue.

The National Oceanic Forecast Office issued a blue wave warning at 08:00 on September 7: Affected by the cold air, it is expected that from the night of September 7 to the morning of September 8, large waves of 2.5 to 3.5 meters will occur in the northern Bohai Sea and the Yellow Sea; the coastal waters of western, southern and northern Shandong will experience medium to large waves of 1.8 to 2.8 meters, and the wave warning level for coastal waters is blue.