The cold front rainfall is behind the front, and the warm front rainfall is before the front. What do you think of the front and the back?

There are two ways to judge the front:

1, judging from known legends

Generally speaking, on the weather map, the cold front is represented by the shape of a triangle, and the direction pointed by the triangle arrow is the front; The warm front is represented by a semicircle, and the direction pointed by the semicircle is in front of the warm front.

2. From the moving direction.

The cold front moves from the cold air mass to the warm air mass, so one side of the warm air mass is the front; The warm front moves from the warm air mass to the cold air mass, so one side of the cold air mass is the front Judging cold air mass or warm air mass can be based on temperature.

Extended data

The characteristics of frontal rain are as follows:

1. The horizontal range of frontal precipitation is large, and a large-scale banded precipitation area is often formed along the frontal surface, which is called precipitation zone.

2. With the seasonal movement of the average position of the front, the position of the precipitation belt also moves.

3. The frontal precipitation lasts for a long time, ranging from a few days to 10 day and a half months and 1 month. "Rain after rain in Qingming Festival" is an accurate and appropriate description of frontal precipitation in Jiangnan area of China.

Baidu encyclopedia-qianyu