Does the fifth typhoon Du have an impact on Guangzhou?

From the night of July 25, 2023, there will be 1.5 to 3 meters of medium waves to large waves in the offshore of eastern Guangdong; During the day from July 26 to 28, 2023, there will be 3 to 5 meters of big waves in the offshore of eastern Guangdong, and 2 to 3 meters of medium waves to big waves will appear in the coastal waters of eastern Guangdong; On the night of July 28, 2023, the wave height in the offshore waters of eastern Guangdong will gradually decrease; From the 29th, the wind and waves in the coastal waters of eastern Guangdong will gradually decrease. Therefore, Typhoon Du No.5 has an impact on Guangzhou.

The Guangdong Flood Control, Drought Relief and Windbreak General Command requires all localities and departments to strengthen their organization and leadership, compact their responsibilities at different levels, strengthen forecasting and early warning, start emergency response in time, strictly follow the requirements of "six hundred percent" for typhoon prevention, go all out to do all kinds of defense work, and effectively put the safety of people's lives and property in the first place.

Meteorological definition of typhoon

Typhoon is a kind of tropical cyclone. Typhoons often bring strong winds, heavy rains and storm surges. Meteorologically, according to the definition of the World Meteorological Organization, tropical cyclones with sustained wind speed above 12 (i.e. 32.7m to 41.4m per second) are called typhoons or hurricanes. Typhoons are usually formed on the sea surface 3-5 latitudes away from the equator in tropical areas, and their movements are mainly influenced by large-scale weather systems, and eventually dissipate at sea, or degenerate into extratropical cyclones, or dissipate after landing.

From the classification, typhoons with winds above 12 are divided into three grades, while hurricanes have more grades and higher upper limits. A first-class hurricane is equivalent to a typhoon or a strong typhoon, a second-class hurricane is equivalent to a strong typhoon, a third-class hurricane is equivalent to a strong typhoon or a super typhoon, and a fourth-class hurricane and a fifth-class hurricane are equivalent to a super strong typhoon.

In China, tropical cyclones in the northwest Pacific are classified into six grades according to the maximum average wind force near the bottom center, in which the wind force is 12 or above, which is collectively called "typhoon". Typhoon can be divided into general typhoon (maximum wind 12- 13), strong typhoon (maximum wind 14- 15) and super typhoon (maximum wind ≥ 16).