Read "Weather forecast map of some cities in eastern my country on a certain day in spring" (pictured) and answer the following questions. ． (1) The weather in Guangzhou is ______, _____

According to the information in the picture: (1) The weather in Guangzhou is thunderstorms, 18-25℃; (2) The weather in Wuhan is cloudy, 10-20℃; (3) The northeasterly wind in the East China Sea is level 6 ; (4) The natural reasons why Beijing has been hit by sandstorms many times are land desertification, low precipitation in spring, and frequent cold waves and windy weather in winter and spring; the man-made reasons are serious damage to vegetation, and sand sources brought by construction sites and ungreened land; (5) The weather in Harbin is foggy, which has adverse effects on traffic.

So the answer is: (1) Thunderstorm; 18-25; (2) Overcast; 10-20; (3) 6; Northeast; (4) Sandstorm; B; (5) Fog; Traffic.