What does a hurricane mean?

Hurricanes are tropical cyclones with strong winds.

Hurricanes usually occur in summer and early autumn, and often thunder and lightning when they come. In just one day, hurricanes can release a lot of energy, enough to meet the electricity demand of the whole United States for about six months.

In most storm structures, the air will become warmer and warmer, and will rise higher and higher, and eventually flow to the outside atmosphere. If these upper winds are light, then this storm structure will be maintained and developed. The sky at the eye of the hurricane (that is, the center of the hurricane) is relatively calm. The most violent weather phenomenon occurs in the surrounding atmosphere near the eye of a hurricane, which is called the eye wall. At the top of the eye wall, most of the air flows out, which intensifies the upward movement of the atmosphere.