BEIJING - China's maritime authority on Tuesday continued to issue an orange wave warning and blue storm tide warning regarding Utor, the 11th typhoon to hit China this year.

According to the National Marine Environmental Forecasting Center, Utor is expected to make landfall in South China's Guangdong province on Wednesday night.

The center warned that, from noon on Tuesday to noon on Wednesday, there will be waves as high as 10 meters in the northern part of the South China Sea, and waves that will measure up to 5.5 meters in the western part of coastal areas in Guangdong.

Utor is also expected to create sea waves ranging in height from 3.5 to 4.5 meters in the northeastern part of south China's Hainan province, and waves up to 4 meters high in the eastern part of Guangdong's coastal areas.

Seaside bathing and sea travel in the affected areas should be canceled, and coastal organs should take precautionary measures, the center urged.

China has a four-tier color-coded weather warning system, with red representing the most severe weather, followed by orange, yellow and blue.