The main classification of disastrous weather

According to the maximum wind force near its center, it can be divided into six types according to the current regulations in China:

(1) tropical depression (TD): the maximum wind force near the center is less than Grade 8 (the wind speed is less than17.2m/s);

(2) Tropical Storm (TS): The maximum wind force near the center reaches 8-9 (wind speed17.2-24.4m/s);

(3) Severe tropical storm (STS): the maximum wind force near the center reaches 10- 1 1 (wind speed is 24.5-32.6m/s);

(4) Typhoon (TY): the maximum wind force near the center 12- 13 (wind speed 32.7-4 1.4m/s).

(5) Strong typhoon (STY): the maximum wind force near the center 14- 15 (wind speed 4 1.5-50.9 m/s).

(6) Super typhoon: the maximum wind force near the center 16 or more (wind speed ≥ 5 1.0m/ s) 1989 65438+ international tropical cyclone name from 10/month 1. 6-7 Tropical Depression 8-9 Tropical Storm/KOOC-0/0-/KOOC-0/Strong Tropical Storm/KOOC-0/2-/KOOC-0/3 Typhoon 65438. China's unified standard is to divide rainfall into three levels: rainstorm (50.0-99.9mm), heavy rainstorm (100.0-249.0mm) and extremely heavy rainstorm (250.0mm or more).