How did hurricanes form in the United States?

Hurricanes, strong and deep tropical cyclones (the maximum wind speed is 32.7m/s, and the wind force 12 or more) are called hurricanes in the Atlantic Ocean and the North Pacific Ocean, and also refer to strong winds and any tropical cyclones and any strong winds with wind force 12. Hurricanes in America are frightening. Let me tell you more about American hurricanes.

How American hurricanes are formed: the causes of American hurricanes

coriolis force

The formation of tropical cyclone (hurricane) is influenced by Coriolis force (earth rotation). The motive force of tropical cyclone movement is the pressure difference between the low pressure center and the surrounding atmosphere. The air in the surrounding atmosphere moves directionally to the center of low pressure driven by pressure difference, and is deflected by Coriolis force to form a rotating airflow, which rotates counterclockwise in the northern hemisphere and clockwise in the southern hemisphere. Due to the rotation, the low pressure center can be maintained for a long time.

hot water

The warm seawater that causes the low pressure area on the sea surface is the key factor of hurricane formation.

harm

Therefore, some scientists began to study whether the warming earth will bring more powerful and harmful tropical storms. Most meteorologists believe that the earth seems to be getting hotter and hotter. They think that carbon dioxide and so-called greenhouse gases in the atmosphere are warming the earth. Researchers warn that people must seriously think about the problem of global climate change decades or even centuries later. It should be pointed out that a weather and climate event, such as a strong hurricane or an active hurricane season, does not mean global warming. Hurricanes are strong storms that occur in the tropical oceans of the northwest Pacific Ocean and the South China Sea. A hurricane is an air vortex that rotates around its center in the atmosphere and moves forward at the same time. It rotates counterclockwise in the northern hemisphere and clockwise in the southern hemisphere. Meteorology calls the vortex in the atmosphere a cyclone, because the vortex in the hurricane atmosphere is produced on the surface of the tropical ocean, so it is called a tropical cyclone.

Hurricane records in the United States

Hurricane Sandy: Top Ten Hurricanes with the Most Deaths in American History;

Hurricane that hit Galveston, Texas in September.

This is the deadliest hurricane in American history. The death toll caused by the hurricane is estimated to be between 8000 and 12000. There are four types of hurricanes, and the floods caused by hurricanes flooded the 12 block in Galveston.

2 1928 Hurricane hit Lake Okchobe in Florida in September.

There are four kinds of hurricanes. After the hurricane caused serious damage to Puerto Rico, it landed on Lake Okichoby near Palm Beach. The weather forecast didn't make an accurate forecast. The hurricane destroyed the levees and caused floods. It killed 1836 people, most of whom drowned.

Hurricane that hit Florida and Texas in September 2009.

Hurricanes fall into four categories. It swept the Florida Peninsula, crossed the Gulf of Mexico and attacked the Holy Communion City in Texas, killing 600 to 800 people, many of whom died on board.

The hurricane that hit New England in September, 0938.

The hurricane is a category 3 hurricane. September 2 1938 attacked Long Island, causing floods. More than 8,000 houses and 6,000 boats were destroyed in new york and Massachusetts, and at least 600 people were killed.

5,65438+attack Florida in September, 0935? Great labor day? hurricane

This kind of hurricane is the five highest hurricanes. Strong winds derailed a train that went to a Florida construction site to rescue some World War I veterans. 423 people were killed in the hurricane.

June,1June, 957, attacked southern Louisiana? Audrey? hurricane

? Audrey? The hurricane was a category 4 hurricane and landed in the southern lowlands of Louisiana late at night on June 26, 1957, killing 390 people. Many of them think they can leave one day. But the storm accelerated and landed early.

7.1September 1944 attacked the northeastern United States? The Atlantic Ocean? hurricane

The hurricane is a category 3 hurricane. It went north along the east coast of the United States and hit Norfolk with a wind speed of 90 miles per hour on September 14. It killed 394 people, most of them at sea.

8. 1909 Attacked Louisiana in September? This hurricane falls into four categories. It caused at least 350 deaths and losses of $6 million. Most of southern Louisiana was flooded.

9. Hurricane that hit New Orleans in September 2005. This hurricane is a category 4 hurricane. The torrential rain it brought caused the lake to overflow the dam, and 275 people died in New Orleans surrounded by water on three sides.

10, 19 15 The hurricane that hit Galveston, Texas was hit by a category 4 hurricane for the second time in a year. Although Galveston built a breakwater after Hurricane 1900, the hurricane still killed 275 people.

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