What is the biggest tornado in the world?

What is the biggest tornado in the world? Do you know that?/You know what? Let me answer for you.

The biggest tornado in history was 1925, the strongest tornado in the United States.

The biggest tornado in the world happened in America. 1925 On March 18, a strong tornado occurred in the United States, with a speed of 96.6 kilometers per hour, passing through southeastern Missouri, southern Illinois and northern Indiana. Tri-state tornado? (Tri-state tornado), the journey reached 354 kilometers, causing a lot of property losses, causing 689 deaths and 1980 injuries. This is the biggest tornado in the world.

Tornadoes often cause great damage, and the destructive power is amazing. At sea, it will roll up rough waves and destroy ships that cannot escape. No matter how big the ship is, it is like a small leaf in the wind and waves caused by a tornado. On land, it is more threatening. It can roll a 20-ton boiler to a place 500 meters away, and it can easily lift a 1 10 ton oil storage barrel to a height of 15 meters, and then fall to 120 meters away. When it moves, it rolls a lot of things from one place to another, causing the sky to fall? Yu Yu? 、? Frog rain? 、? Mai Yu? And then what? Silver coin rain? ; It even uprooted trees and turned the city into ruins.

How do tornadoes form?

Tornado, also known as tornado and tornado, is a rather violent weather phenomenon, which is formed by rapidly rotating and vertical hollow tubular airflow. Tornadoes vary in size, but they are usually funnel-shaped. Funnel? The upper part is connected with cumulonimbus clouds (in rare cases, cumulonimbus clouds), and the lower part is generally in contact with the ground and is often surrounded by dust or debris.

Tornadoes come from thunderstorms, supercells, strong winds and hurricanes, and many tornadoes appear at the end of moderate cyclones. It is generally believed that when cold air passes through the hot air layer and warm air rises rapidly, tornadoes will occur. On the radar screen, one? Hook echo? Usually represents the area where tornadoes may exist.

One of the conditions that cause tornadoes is that the water on the ground absorbs heat and becomes steam. After rising to the upper layer of the lower temperature sky steam layer, the volume of steam decreases, the specific gravity increases, and then decreases. Due to the high temperature below the steam layer, it absorbs heat during the falling process, rises again, and falls again when it is cold. In this repeated process, gas molecules gradually contract and finally concentrate at the bottom of the steam layer, where a low temperature zone is formed. Water vapor is concentrated in the low temperature area, forming clouds. The cloud is getting bigger and bigger, the temperature difference between the upper and lower clouds in the cloud is getting smaller and smaller, the fluctuation range of water vapor molecules is getting bigger and bigger, the convection in the cloud is getting stronger and stronger, and the gas molecules under the cloud constantly replenish the space, which leads to the appearance of strong winds. Due to the interaction with the wind with shear speed and direction in the vertical direction, the updraft begins to rotate, forming a cyclone. The cyclone continued to strengthen and extended to the ground, and cloud columns appeared. When the cloud column reaches the ground, the ground wind speed rises sharply, and a tornado is formed.

Tornadoes will cause millions of dollars in economic losses every year, and will lead to unemployment, death and injury. The harm cannot be underestimated. In Bangladesh, due to high population density, poor housing quality and poor knowledge of tornado safety, about 179 people die from tornadoes every year. On average, there are 80 tornadoes in Canada every year, causing 2 deaths and 20 injuries, resulting in tens of millions of dollars in losses. On July 4th, 2000, it attacked Pine Leaf Lake in Alberta, Canada. Black tornado? 1 1 people have been killed.

Britain is the most frequent tornado area in Europe. If you count the area of relevant land, Britain and the Netherlands are the countries that suffer the most tornadoes per unit area in the world, and the Netherlands can suffer an average of 0.00048 tornadoes per square kilometer every year. There are also small strong tornadoes in parts of New Zealand and Uruguay. The United States suffers the most tornadoes in the world, with an average of 100000 thunderstorms and 1200 tornadoes every year, with 50 deaths. In the vast areas of the Midwest and South America? Tornado lane? The most famous. The deadliest tornado on record in the United States occurred on March 1925, passing through southeastern Missouri, southern Illinois and northern Indiana? Tri-state tornado? (Tri-state tornado), causing 695 deaths.

If there are more than six tornadoes in one day, it can be said that it has already appeared? A tornado broke out? . 1On April 3, 974, the second largest tornado in history produced 148 tornadoes, including 7 F5 tornadoes and 23 F4 tornadoes, nicknamed? Super explosion? (Super Burst). What is another storm of similar intensity? Tornadoes broke out all day in Palm Branch? (1965 palm branch full-day tornado broke out), which hit the midwest of the United States on April 1965, killing 27 1 person. In addition, 2011(April 25? 28,2011tornado outbreak), 358 tornadoes were confirmed and 349 people died (238 people died in Alabama in these four days alone). There were 208 tornadoes on the 27th, including four EF5 tornadoes (two of which occurred between Mississippi and Alabama) and 1 1 EF4 tornadoes, which were called 1974? Super explosion? Experienced the worst tornado disaster and more serious disaster. In April, the largest number of tornadoes was recorded in a single day and a single month, so the United States also called this tornado a big outbreak? 20 1 1 super outbreak? Or? Super explosion Ⅱ? .