Read the weather in China on a certain day.

According to the information in the picture, (1) the weather in Guangzhou is thunderstorm,18-25℃; (2) The weather in Wuhan is cloudy,10-20℃; (3) The northeast wind of the East China Sea is level 6; (4) The natural causes of sandstorms in Beijing are land desertification, less precipitation in spring and more cold wave and windy weather in winter and spring; Man-made reasons are that the vegetation is seriously damaged, and the construction site and uncultivated land bring sand sources; (5) The foggy weather in Harbin has a negative impact on traffic.

So the answer is: (1) thunderstorm; 18-25; (2) Yin; 10-20; (3)6; Northeast China; (4) sandstorm; b； (5) fog; Traffic.