More than 10 people have been killed in at least 30 tornadoes in six central U.S. states on the night of December 10. Biden said it could be the biggest tornado disaster in U.S. history. More than 55 million people in the United States face serious threats.
After the U.S. tornado
If we encounter a tornado, how can we save ourselves?
First hide in the strongest buildings - the buildings are reinforced with concrete or steel, but the best way is to hide in a stormproof basement, or in a cave, if you stay in the cellar, stay next to the outer wall, or stay in a specially reinforced place, if there is no basement, you can go to the bottom floor, enter a small room, or take shelter under the solid furniture, away from the window.
All the doors and windows facing the direction of the whirlwind, you have to close them tightly, and the other side of the doors and windows should be opened, the purpose of this is to prevent the whirlwind from blowing into the house, lifting your roof, the air pressure inside and outside the house can be balanced, to prevent the house from "exploding".
tornado
Don't stay in the car, the storm will roll it into mid-air. If you can see, or hear that a tornado is coming, hurry up and leave, moving at right angles to the path the tornado is traveling. If you are too late to dodge, outside the house, you can easily be hurt by debris flying with the wind, or be swept into the air. Immediately take shelter in a ditch or depression in the ground, lie flat, and cover your head with your hands. Do not be under poles or trees.
Popular science: the cause of tornadoes, tornadoes generally occur in high temperature and high humidity and unstable air masses, when the dense cold air collides with warm and humid air and pushes down will produce thunderstorms, and tornadoes are a small part of the huge energy of thunderstorms released in a very small area, the cold air on the surface is heated, the columnar air descends from the upper part of the Cumulonimbus clouds, and the air rapidly enters the low pressure area and begins to rotate. The fundamental cause of the tornado cluster in the United States over the weekend is due to the abnormal temperature difference between the weather in the Midwest of 22.2 degrees Celsius above the average of previous years, resulting in a very large difference in air temperature between the upper and lower levels, when the temperature on the ground is about 30 degrees Celsius, the temperature has dropped to minus 30 degrees Celsius at an altitude of 8,000 meters, and the strong temperature difference will cause the cold air to drop sharply, the hot air rises rapidly, and the upper and lower air convection speed is too fast, thus forming many small gas whirlpools, when these small whirlpools gradually expand, coupled with the fierce friction of the air, it is easy to form atmospheric swirls, which eventually cause wind damage to the ground or the ocean.
Dear friends, have you learned?
Tornado causes