Shun Network -
citizens for I see the tornado, and also took pictures, in the blue sky and white clouds, it is really beautiful! 28 morning, Mr. Li called the news hotline, telling his adventures. After taking the photos of Mr. Li to the weather experts, the experts said that the tornado was actually a dust wind. 10:00, Mr. Li and his friends drove to Changqing Garden Park, and saw a tornado near Liu Chang Shan Road extension line. A lot of cars stopped at that time. We were about 100 meters away, and we could see the Yellow pillars of the dust columns moving slowly eastward. My friends and I were happy and bad. They always watched on TV, but I didn't expect to meet this time. According to him, the whirlwind appeared relatively open, and no buildings were damaged or people were injured.
after looking at the picture, the Ji'nan Meteorological Bureau expert said that Mr. Li saw not a tornado but a dust wind. This phenomenon is also rare. According to the experts, the dust wind is a special revolving convective movement formed by the uneven local heat increase of the ground. During the formation of the dust wind, the outer air is heated to the central part by the surface layer near the ground, and the rotating energy of the outer air is strengthened to form the dust wind at the center position. The dust wind usually occurs in fine weather, when the sun is sufficient, the surface is dry, and the surface heating is uneven. A small cyclone produced in the near ground gas layer can roll dust and some tiny objects into the air to form a small dust column. The time of the dust wind is very short. Experts say dust storms do not cause natural disasters, but sometimes very strong dust storms can cause minor calamities.
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dust wind and tornado are close relatives?
dust winds and tornado are two different disasters, according to experts. Dusty winds have far less influence and power than tornadoes. Dust storms occur mostly in the summer afternoon and when solar radiation is particularly intense. The tornado is a strong, small air vortex, which is produced by intense air convection in extremely unstable weather. It usually extends from the bottom of the thunderstorm to the ground and is funnel-shaped. The wind can reach over 12 levels, up to more than 100 meters per second, usually accompanied by thunderstorms, sometimes accompanied by hail. Since 2000, the record of tornadoes in Ji'nan has been recorded in July 31, 2006, where the place was in the sixteen Li River, which caused more than a hundred civil houses to be seriously damaged and more than 3000 mu of crops were affected.