What does thunderstorm mean?

Thundershower is a kind of weather phenomenon, which is characterized by large-scale cloud movement, much stronger than shower, accompanied by discharge, and is common in summer.

Thundershower is because the weather is very hot in summer, and the air has strong convection in some places, which makes a lot of hot and humid air rise violently, leading to the formation of cumulonimbus clouds. The strong thermal convection of cumulonimbus clouds greatly disturbs the cumulonimbus clouds, so there will be lightning. Moreover, due to the movement of cumulonimbus clouds, the rainfall changes greatly, forming thunderstorms. Thunderstorms mostly occur in the afternoon to evening.

I. Distribution characteristics

In China, thunderstorms usually occur in May-August when the temperature is high and the humidity is high? In terms of weather. Spring and autumn mainly occur in Jiangnan, with the least in winter. /kloc-after 0/0, there were thunderstorms in the vast area north of the Yangtze River. Judging from the time of day, it mostly happens in the afternoon and evening.

Second, the main impact

1, thunderstorms mostly occur in summer, which is when crops need rain most, so thunderstorms are useful for crop cultivation.

2. Thunderstorm, because there is lightning phenomenon, is conducive to the free nitrogen in the air falling with the rain, which can increase the fertility of the soil, so thunderstorm is beneficial to agriculture.

3. The time in thunderstorm weather is short, especially in hot thunderstorm weather, but it is urgent. In valleys or river valleys, flash floods often occur because of short drainage, which will destroy crops. It is necessary to take precautions in advance.

4. Due to the urgency of thunderstorm and heavy rain, soil is often washed away. Soil is the most important capital in our agricultural production, so we should prevent soil erosion.

General knowledge of security

1. When there is a thunderstorm and lightning, don't call and answer the phone, but unplug the telephone line. The mobile phone can be used normally! But generally try not to answer the phone outdoors or indoors near the window.

2. Don't turn on the TV, computer, VCD player, etc. Unplug all power plugs during thunderstorms and lightning to avoid personal injury and electrical damage.

3, don't stand under the light bulb, don't take a shower.

4. Try not to go out. If you have to go out, you'd better wear rubber shoes and a raincoat, which can keep out lightning.

5. Try not to open the door or open the window to prevent lightning from hitting the room directly.

6. Don't stick your head and hands out of the window when you encounter lightning in the car.

7. Stay away from trees during a thunderstorm. Try not to run in big strides. You can choose buildings to shelter from the rain. You can also take shelter from the rain in the car, because the car belongs to the metal shell, so people will not be hurt by inductive lightning, nor will they be directly hit by lightning.

8. Don't connect the wires for drying clothes and bedding to the doors and windows.

9. Don't wear wet clothes, hats, shoes, etc. Walking in a thunderstorm. For sudden lightning, immediately squat down to lower the height, and at the same time lower your feet together? Harm caused by step voltage.

10, when lightning strikes, don't get close to all power facilities, such as high-voltage line transformers.

1 1, immediately stop outdoor swimming, boating, fishing and other water activities.

12. If many people gather outdoors, don't crowd each other to prevent power from being transmitted to each other after being struck by lightning.