What is a typhoon?

Typhoon is a tropical meteorological phenomenon, also known as tropical cyclone. Typhoon is a powerful storm system evolved from tropical ocean depression. Usually accompanied by strong winds, heavy rains and big waves.

The core of the typhoon is a central low-pressure area, surrounded by dense clouds and storms. The diameter of typhoon can reach hundreds of kilometers, and the wind speed at the center of the strongest typhoon can even exceed 250 kilometers per hour. Typhoon is characterized by rotating counterclockwise (in the northern hemisphere) or clockwise (in the southern hemisphere), and the wind is distributed radially.

The formation of typhoon needs certain meteorological conditions, such as warm ocean surface, moist air and proper updraft. When these conditions are met, the initial tropical disturbance will gradually evolve into a typhoon. Typhoons usually form in tropical areas and move northwest or northwest, but sometimes they move in other directions.

Typhoon has a great influence on coastal areas and maritime navigation. They bring violent storms, heavy rains and powerful waves, which may lead to floods, storms and maritime dangers. Therefore, the early warning and monitoring of typhoon is very important, so as to take timely measures to reduce its impact on human life and property.