Rainstorm division standard

Legal analysis: rainstorm levels are divided into: rainstorm, heavy rainstorm and extremely heavy rainstorm, as follows:

1, rainstorm: 1d (or 24h) rainfall 50 ~100 mm.

2. rainstorm: 1d (or 24h) rainfall 100 ~ 250mm.

3. Extraordinary rainstorm: 1d (or 24h) rainfall is more than 250mm.

Rainfall is measured by rain gauge or rain gauge, and the unit is millimeter. Daily rainfall observation can be divided into four types: 24 segments (1h), 8 segments (3h), 4 segments (6h) and 1 segment (24h). There are two methods for daily rainfall statistics: 20-20 hours and 08-08 hours. The daily rainfall released by TV and radio programs in China is 08 ~ 08, which represents the rainfall of the previous day.

Legal basis: Meteorological Law of People's Republic of China (PRC).

Article 22 The State implements a unified release system for public meteorological forecasts and severe weather warnings. Meteorological offices and stations subordinate to competent meteorological departments at all levels shall, in accordance with their duties, issue public meteorological forecasts and severe weather warnings to the public, and supplement or revise them in time according to weather changes. No other organization or individual may issue public meteorological forecasts and severe weather warnings to the society. Meteorological offices and stations affiliated to other relevant departments of the State Council and other relevant departments of the people's governments of provinces, autonomous regions and municipalities directly under the Central Government can issue special weather forecasts using this system. The competent meteorological departments at all levels and their subordinate meteorological stations shall improve the accuracy, timeliness and service level of public meteorological forecast and severe weather warning.

Article 23 Meteorological offices and stations subordinate to competent meteorological departments at all levels shall, according to needs, issue professional meteorological forecasts such as agricultural meteorological forecast, urban environmental meteorological forecast and fire risk meteorological grade forecast, and cooperate with military meteorological departments to provide meteorological services needed for national defense construction.