Dragonheads appeared in America

The large water cannon has just appeared in Lake Michigan, near Milwaukee, Wisconsin in the United States last weekend with wind speed of about 100km / h.

>>>America: a country of a dragon's water, a 'killer' series

A tornado or tornado is a phenomenon of a large swirling air that extends from a thundercloud to the ground. The diameter of the hose can vary from a few dozen meters to 2 kilometers, an average of about 50 meters.

According to calculations by scientists, the United States is home to the highest average number of water hoses per year in the world, about 800 attacks. Australia ranked second. Cannons also occur in many countries like China, Russia, India, England and Germany.

During the time of the water cannon, everyone must immediately seek shelter in a basement or a hidden place of the building such as a meeting room, a bathroom . Should not be in large houses with large roofs like hearing rooms, or supermarkets are places that are easy to collapse. If you are on the road, you should crawl under a deep trench or ditch and cover your head carefully to prevent injury from falling rocks.