Traditional Culture Encyclopedia - Weather forecast - Four places in Hebei suffered from strong convective weather. What's the reason for this weather?

Four places in Hebei suffered from strong convective weather. What's the reason for this weather?

Necessary conditions for the formation of strong convective weather

Strong convective weather occurs in small and medium-scale weather systems, and the spatial scale is small. Generally, the horizontal range is about ten kilometers to two or three hundred kilometers, and some horizontal ranges are only tens of meters to ten kilometers. Its life history is very short, with obvious suddenness, about one hour to more than ten hours, and the shorter one is only a few minutes to an hour.

Because of the high temperature and humidity in summer, what is in the air? Energy? The probability of strong convective weather is high. The essence of atmospheric convection is the process of mutual transformation and release of effective energy, and the potential energy contained in the atmosphere can be converted into kinetic energy of convection upward movement under certain conditions. The conditions of high temperature and high humidity often make this energy higher and the atmosphere more unstable, which is more conducive to the development of convective weather.

The physical process of the formation of various severe convective weather is not exactly the same, which is closely related to the dynamic and thermal effects of the underlying surface. Moreover, strong convective weather is based on large-scale weather systems, which affects or determines the generation, development and movement of small and medium-scale weather systems. For example, during the Meiyu period, a wide range of cold and warm air meet to form a Meiyu front rain belt, which will produce heavy rain in some areas if it is matched with favorable conditions such as topography.