Causes of frequent tornadoes in the United States

The reasons for frequent tornadoes in the United States are as follows:

1, sufficient water vapor.

The United States faces the Atlantic Ocean in the east, the Pacific Ocean in the west and the Gulf of Mexico in the south. With abundant water vapor, thunderstorm clouds are easy to develop and meet the conditions for the formation of tornadoes.

2. North American topography.

The west coast of the whole North American continent is the endless Rocky Mountains. The east coast of the North American continent is the Appalachian Mountains and Labrador Plateau. Both the Rocky Mountains and the Appalachian Mountains are north-south, and there is a flat North American plain between them, which is "transparent from north to south" and forms a wind corridor.

3. Cold and warm air flow.

The cold air from the arctic ocean south can directly drive the southern United States; Warm and humid air currents from the Gulf of Mexico can also flow northward unimpeded, and cold and warm air currents often meet.

Brief introduction of tornado

Tornado, also known as tornado and tornado, is an upright hollow rotating airflow between the bottom of vertical cloud system and the underlying surface. It is a disastrous weather phenomenon on a local scale, usually forming a funnel shape with a big top and a small bottom, extending to the ground and surrounded by dust or debris. According to the shape and environment, tornadoes can be divided into multi-vortex tornadoes, land tornadoes and waterspouts. A cyclone with strong wind force and small range is shaped like a big funnel, and the wind speed often reaches more than 100 meters per second, which is extremely destructive. On land, it can uproot trees and destroy all kinds of buildings and crops.