In ancient China, "typhoon" was called "hurricane". We know from historical documents that there were typhoons in ancient times. It was first published in  Huaiyuan's Chronicle of South Vietnam in Liu and Song Dynasties, but it has long been lost. The Chronicle of South Vietnam says: Hurricane Xi 'ando has many musical instruments. Wind, hurricane, there are winds in all directions. When I said it, I was scared. It is usually very popular in June and July. Three days ago, chickens and dogs were silent. The oldest lasts for seven days, and the youngest lasts for one or two days. Foreign countries think that the black wind.

1956 65438+1October 3 1 People's Daily published the State Council's resolution on publishing simplified Chinese characters and simplified Chinese characters. With the simplified characters on the historical stage, the word "Taiwan Province" was also simplified as "Taiwan Province", so the wind of "Taiwan Province" was "typhoon", which also confirmed this speculation.

Classification of typhoons

According to the national standard of Tropical Cyclone Grades (GB/T 1920 1-2006), it is divided into six grades according to the maximum average wind speed near the center of tropical cyclone bottom:

The tropical depression reaches10.8m/s-17. 1 m/s (wind force 6-7).

Tropical storm reaches17.2m/s-24.4m/s (wind force 8-9).

When it reaches 24.5m/s-32.6m/s, it is a strong tropical storm (wind10-1).

A typhoon reaches 32.7m/s-41.4m/s (wind 12- 13).

It is a strong typhoon when it reaches 4 1.5 m/s -50.9 m/s (wind 14- 15).

A super typhoon reaches or exceeds 5 1.0 m/s (wind 16 or above).