Standard for rainstorm, heavy rainstorm and extremely heavy rainstorm

Legal analysis: rainstorm refers to the precipitation of 50 ~ 99.9 mm within 24 hours; Heavy rain refers to the precipitation below 100 ~ 200mm; Rainstorm refers to the precipitation of more than 200 mm. Due to different regions and different landforms, the standard of rainstorm and flood in each region is also different. Some places redefine the standard according to their own actual conditions, such as taking the daily rainfall of 25mm or 30mm as the rainstorm standard.

The rainfall of -0. 1 mm within 24 hours is a small amount of rainfall (sporadic rain); /kloc-it is light rain when the rainfall is 0. 1 ~ 4.9mm within 2 hours or 0. 1 ~ 9.9mm within 24 hours; 12 hours rainfall of 5.0 ~ 14.9mm or 24 hours rainfall of/kloc-0 ~ 0 ~ 24.9 mm is moderate rain. /kloc-rainstorm occurs when the rainfall is 15.0. 1 ~ 29.9 mm in 0/2 hours or 25.0 ~ 49.9 mm in 24 hours; /kloc-rainstorm occurs when the rainfall is 30.0 ~ 69.9 mm within 0/2 hour or 50.0 ~ 99.9 mm within 24 hours; /kloc-rainstorm occurs when the rainfall is 70.0 ~139.9mm within 0/2 hour or100.0 ~ 249.9mm within 24 hours; When the rainfall within 12 hours is140.0mm or the rainfall within 24 hours is 250.0mm, a rainstorm occurs.

Legal basis: Article 41 of the Meteorological Law of People's Republic of China (PRC). The meanings of the following terms in this Law are:

(1) Meteorological facilities refer to meteorological detection facilities, special transmission facilities for meteorological information, large-scale meteorological special technical equipment, etc.

(2) Meteorological detection refers to the systematic observation and measurement of atmospheric physical processes, phenomena and chemical properties in the atmosphere and near-surface layer by means of science and technology.

(3) Meteorological observation environment refers to the environmental space formed by the minimum distance necessary to avoid all kinds of interference and ensure meteorological observation facilities to obtain meteorological observation information accurately.

(4) Meteorological disasters refer to disasters caused by typhoon, rainstorm (snow), cold wave, strong wind (sandstorm), low temperature, high temperature, drought, lightning, hail, frost and fog.

(5) Weather modification refers to the activities of artificially influencing local atmospheric physical and chemical processes through scientific and technological means to increase rain and snow, prevent hail, eliminate rain, eliminate fog and prevent frost in order to avoid or mitigate meteorological disasters and rationally utilize climate resources under appropriate conditions.