The tornado in Wuhan has caused many casualties. How do tornadoes usually form?

The tornado in Wuhan has caused many casualties. How do tornadoes usually form?

Because the small-scale air vortex is caused by the strong convective movement of the air under unstable weather conditions.

Tornadoes are usually formed on the sea, lake or vast desert, so they are divided into waterspouts, land tornadoes and dust tornadoes. Specific areas are common in tornado corridors in the midwest of the United States, extending from the Rocky Mountains to the Appalachian Mountains, and in many parts of southern States.

Tornado is a strong, small-scale air vortex, which is produced by strong convective movement of air in extremely unstable weather. It is a strong cyclone produced by funnel-shaped clouds (tornadoes) extending from the bottom of thunderstorm clouds to the ground. Its wind power can reach more than 12, and the maximum can reach more than 100 meters per second, usually accompanied by thunderstorms and sometimes hail. The air rotates rapidly around the axis of the tornado and is attracted by the extremely low air pressure in the center of the tornado. In the thin layer of air tens of meters thick near the ground, the airflow is sucked into the bottom of the vortex from all directions. Then it becomes a vortex around the axis. The wind in a tornado is always cyclonic, and the air pressure in its center can be 10% lower than that around it.

Tornadoes often occur in thunderstorm weather in summer, especially in the afternoon to evening. The attack range is small, and the diameter of tornadoes is generally between ten meters and several hundred meters. The survival time of tornadoes is generally only a few minutes, and the longest is no more than a few hours. The wind is particularly strong, and the wind speed near the center can reach 100-200m/s, which is extremely destructive. Where tornadoes pass, trees are often pulled up, vehicles are overturned, buildings are destroyed, and sometimes people are sucked away, which is very harmful.

People who live by the sea often have the opportunity to see a strange weather phenomenon: sometimes a black tail sticks out from the dense thunderstorm clouds in the sky. In ancient times, people could not explain this mysterious natural phenomenon, and they all said yes? Dragon? , what's your name? Dragon absorbs water? . In fact, it's a violent whirlwind, and? Dragon? It doesn't matter. However, generation after generation, meteorology is also called? Tornado? Yes