It rains heavily in Guangdong.

The rainstorm in Guangdong has been repeated for more than a month. Waterlogging has also occurred in many places in Guangdong. Many people's houses and fertile fields were washed away by floods, and flash floods caused by heavy rains occurred in many areas. The flood situation in Guangdong is very critical, and the tidal level in the Pearl River is also rising. The rainfall in one area even exceeds that in Beijing in the past six months. So, why did the rainstorm in northern Abu Guangdong last for so long? Bian Xiao will explain the rain belt movement, geographical location and atmospheric circulation.

First of all, around the Dragon Boat Festival, cold air from Siberia still stays in the south. Although the cold air has gradually moved northward, it still meets the warm and humid airflow from the Indian Ocean and the Pacific Ocean, and then meets the cold air from north to south to form a front. Guangdong is at the front water level, so front rain has formed at the junction of Guangdong, Guangxi, Hainan and Fujian. In addition, due to the influence of land and sea breeze, the air flow forms an anticyclonic vortex, which leads to a low intermediate pressure. ?

Secondly, due to the arrival of the southern summer monsoon circulation earlier than in previous years, it will stay in the south for a longer time, so there will be more rainfall in the rain belt in South China. Coupled with the influence of warm and humid air flow, the cold air blowing from the ocean brought about cooling and intensified the intensity of heavy rain. In addition, Guangdong is a coastal city, and the confrontation between the cold air on land and the warm and humid airflow on the ocean has formed a particularly violent rainstorm.

Finally, the rainstorm will not stop until the rain belt moves northward. During this period, residents in Guangdong Province should do a good job in flood control. If there is enough time in case of flood, you should try to move to the highland or hillside in the vertical direction of water flow. If you are surrounded by floods, try to catch some usable suspended substances around you, such as wooden signs, wooden boats and door panels. If it is too late to move, you must immediately climb the roof, big trees or high walls, temporarily avoid danger and wait for rescue. If the communication conditions have been destroyed, people can attract attention by making fireworks or waving colorful clothes.