Tornadoes are very destructive and can cause serious damage to people and things around them.
A tornado is a violently rotating circular column of air. According to the China Meteorological Administration website, this often happens during thunderstorms. Its upper end is connected to the thunderstorm cloud, and some of its lower ends are suspended in the air, and some extend directly to the ground or water surface, rotating. and move forward.
The reason for its formation is that the air turbulence in thunderclouds is very severe, and the temperature difference between the upper and lower parts is huge. When the ground temperature is above 20 degrees Celsius, the temperature at an altitude of more than 8,000 meters above the top of a cumulonimbus cloud can drop to minus 30 degrees Celsius. This way the cold air above falls quicklydement and. the warm air below rises violently. A large vortex is gradually formed in the turbulence from top to bottom.
According to their different degrees of damage, tornadoes are divided into the Enhanced Fujita Scale from 0 to 5, simply called EF level.
Wind speed level F0 manifests itself in: chimneys, broken branches, leaning trees with shallow roots, damaged road signs, etc.
An F1 level wind speed of 73_112mi/h33_49m/s has a 40% chance of occurring and the degree of damage is moderate.
Symptoms include: the roof of the house was lifted off, the portable garage was overturned, and the moving car was scraped off the road.
The probability of occurrence of F2 level wind speed of 113_157mi/h50_69m/s is 24%, and the degree of damage is relatively high.
Symptoms include: the roof and walls of wooden houses have been blown away byr wind, mobile garages were damaged, trucks derailed or overturned, and large trees were broken or completely toppled. The light object exploded like a missile and the car rolled.
The probability of occurrence of F3 level wind speed of 158_206mi/h70_92m/s is 6%, and the degree of damage is severe.
Symptoms include: roofs and walls of the strongest houses are blown away, trains derail or overturn, and most of the trees in the forest are uprooted.
Heavy vehicles took off from the ground or fled.
The probability of occurrence of F4 level wind speed 207_260mi/h93_116m/s is 2%, and the damage situation is devastating.
The performance is: if the foundation of a solid house is not very strong, it will be blown away by the wind to a certain distance and the car will be blown away like a missile.
The probability of occurrence of F5 wind speed of 261_318mi/h117_141m/s is: solid buildings can explode, large cars can be lifted more than 100 meters like jet planes, and trees can be blown away by the wind. which is an unimaginable catastrophe.