What kinds of fronts are there in the weather forecast?

According to the thermodynamic classification method, fronts can be divided into the following categories: First, cold fronts. If the cold air is strong and the front pushes in the direction of warm air, it is called a cold front, or a cold front. In the process of moving the cold front, the cold air mass plays a leading role, pushing the front to move to the side of the warm air mass, and the cold air mass occupies the original position of the warm air mass. Cold front exists all year round in China, especially in winter. After the cold front crosses the border, the temperature drops, the air pressure rises, and the weather is mostly sunny.

The second is the warm front. If warm air pushes the front to move in the direction of cold air, it is called warm front, also called warm air front.

During the movement of the warm front, the warm air mass occupied the position of the original cold air mass. Warm fronts are mostly active in the northeast and the middle and lower reaches of the Yangtze River, and most of the time they are connected with cold fronts. After the warm front crosses the border, the temperature rises, the air pressure drops, and the weather is cloudy and rainy.

The third is quasi-static. If the cold and warm air are evenly matched, the front will stay in a certain area, which is called a quasi-static front. In fact, there is no absolute stillness. During this period, cold and warm air masses struggle with each other, and either side may be dominant, thus causing the front to swing back and forth.

The fourth is the occlusal front. When the cold front catches up with the warm front, it will form a closed front. When the warm air mass, the cool air mass and the cool air mass meet, two fronts are formed one after another, and one front catches up with the other, forming an occlusion.

No matter whether the cold front comes or the warm front comes, there is usually a rain. After the cold front, the temperature drops, often accompanied by strong winds. After the warm front, the temperature rose and the sky was clear. If a static front forms, there will be rainy weather. Meiyu in southern China is caused by the stay of static front.