What are the pictures of tornadoes?
1, multi-vortex tornado
Multi-vortex tornado is a kind of land tornado. Like land tornado, it is a strong wind vortex accompanied by a funnel-shaped cloud column rotating at high speed, which is caused by strong convection of two airflow under extremely unstable weather conditions, except that multi-vortex tornado has several smaller vortices than land tornado.
2. Lu Longjuan
Tornado is a kind of tornado, which refers to a tornado that occurs over land.
3, waterspout
The waterspout, commonly known as dragon sucking water or dragon hanging water, is produced on the sea surface or water surface.
4.fire tornado
Fire tornado refers to a tornado with a large fire. Fire tornadoes are usually associated with earthquakes, volcanic eruptions and fires. Because of the high temperature and high fever at this time, the air rose sharply, and the surrounding air took advantage of it from all directions. Powerful heat and turbulent cyclone air sucked in a large number of burning debris, and merged with the influx of combustible gas, igniting a rotating fire dragon. In addition, in the process of formation and movement, a tornado happens to meet a fire source, and after being inhaled by it, it merges with combustible gas, which can also form a fire tornado.
Brief introduction of tornado meteorology
Tornado is a severe weather phenomenon at local scale, and it is a vertical hollow rotating airflow between the bottom of the vertical cloud system and the underlying surface. Tornadoes can be seen in tropical to temperate regions, including the interior of the United States, western Australia, and the northeastern part of the Indian Peninsula. The common occurrence time is spring and summer.
According to the shape and environment, tornadoes can be divided into multi-vortex tornadoes, land tornadoes and waterspouts. Tornadoes are observed as long and narrow funnel clouds or similar forms of dust and water columns. Tornadoes usually have a wind speed of 30 to130m/s, a diameter of less than 2km, an activity range of 0 to 25km and a duration of about10min. The strength can be divided into five grades according to the enhanced Fujita series. Sandstorms and fire cyclones are cyclones similar to tornadoes, but they do not belong to tornadoes.
The above contents refer to Baidu Encyclopedia-Tornado.