The difference between typhoon, hurricane and tornado

First, the name

1. Typhoons and hurricanes are tropical cyclones, but they happen in different places and have different names. They are called typhoons in the western North Pacific and the western international date line, including the South China Sea and the East China Sea of China. Tropical cyclones in the Atlantic Ocean or the eastern North Pacific Ocean are called hurricanes, which means hurricanes in the United States and typhoons in the Philippines, China and Japan.

2. The strongest vortex phenomenon in the atmosphere is called tornado.

Second, the weather.

1, typhoons and hurricanes are often accompanied by strong winds and strong convective weather such as heavy rain or torrential rain.

2. Tornadoes are accompanied by storms, lightning or hail.

Third, the reasons for the formation

1. Typhoons and hurricanes originate from tropical oceans, where the temperature is high and a large amount of seawater evaporates into the air, forming a low-pressure center. With the change of air pressure and the movement of the earth itself, the inflow of air also rotates, forming a counterclockwise air vortex, which is a tropical cyclone. As long as the temperature does not drop, this tropical cyclone will become stronger and stronger, and finally a typhoon will form;

2. The formation of tornadoes can be divided into four stages:

(1) The instability of the atmosphere produces a strong updraft, which is further strengthened due to the influence of the maximum transit airflow in the rapids.

(2) Due to the interaction with the wind with shear speed and direction in the vertical direction, the updraft starts to rotate in the middle of the troposphere, forming a mesoscale cyclone.

(3) With the development and upward extension of mesoscale cyclone to the ground, it becomes thinner and stronger. At the same time, a small area to strengthen cooperation, that is, the primary tornado is formed inside the cyclone, and the same process of producing the cyclone forms the tornado core.

(4) The rotation in the tornado core is different from that in the cyclone, and its intensity is enough to make the tornado extend to the ground. When the developing vortex reaches the ground, the ground air pressure drops sharply and the ground wind speed rises sharply, forming a tornado.

Extended data

Defend against typhoons and hurricanes

1. Listen, watch or check the typhoon warning information in time to understand the government's countermeasures against Taiwan;

2. Close the doors and windows and fasten the structures that are easily blown by the wind;

3. Move from a dilapidated house to a safe place;

4. People in low-lying areas that may be flooded should be transferred in time;

5, check whether the circuit, fire, gas and other facilities are safe;

6. Kindergartens and primary and secondary schools should take temporary avoidance measures and suspend classes when necessary;

7. Open-air collective activities or indoor large-scale gatherings should be cancelled in time, and personnel should be evacuated.

Tornado defense

1, the safest place is the concrete basement;

2. Find a low-lying area perpendicular to the tornado path and hide;

3. Run into the house near the big tree to hide.

References:

Baidu encyclopedia-tornado

Baidu encyclopedia-hurricane

Baidu Encyclopedia-Typhoon