About thunderstorm weather

With lightning and lightning.

Some areas

Convective weather

. It must come from a powerful

cumulonimbus

So this field is accompanied by a powerful

shower

Or rainstorm, sometimes accompanied by hail and tornado. Cumulonimbus clouds that form thunderstorms develop vigorously, and there are often ice crystals on the upper part of the clouds. Attachment of ice crystals, breaking of water droplets, and

cross-ventilation

And other processes, causing clouds to generate charges. The distribution of charge in the cloud is very complicated, but generally speaking, the upper part of the cloud is

positive charge

Mainly the middle and lower part of the cloud.

negative charge

Mainly the lower part of the cloud is stronger in front.

Upflow

There is also a small positive area. So, between the top and bottom of the cloud,

potential difference

When the potential difference reaches a certain level, discharge will occur, which is the usual lightning phenomenon. In the process of discharge, the temperature in the flash path suddenly rises, which makes the air volume expand rapidly, thus producing shock waves, leading to strong

thunder

. Clouds sometimes form when they are low.

Cloud-ground discharge

This is a lightning strike. Therefore, thunderstorm is the product of atmospheric instability, and it is the general name of cumulonimbus clouds and their accompanying disastrous weather. Thunderstorm duration is generally short, and a single thunderstorm

biography

Generally no more than 2 hours. There are more thunderstorms in the south of China than in the north, and there are more thunderstorms in the mountains than in the plains. Most of them appear in summer and autumn, and only occasionally in southern China in winter. Thunderstorms usually occur in the afternoon. Night cause

cloud top

radiation cooling

, making clouds

Temperature stratification

Become unstable, also can cause thunderstorms, called.

Night thunderstorm