How long does it take for China's meteorological department to distinguish the size of rain?

The meteorological department of China distinguishes rainfall by precipitation within 24 hours.

Meteorology uses precipitation to distinguish the intensity of precipitation. It can be divided into: light rain, moderate rain, heavy rain, heavy rain, heavy rain, heavy rain, heavy rain, heavy rain, light snow, medium snow, heavy snow and blizzard. Instead of what some people think, it is heavy rain when it is urgent, and light rain when it is slow.

According to the regulations of China Meteorological Bureau, the rainfall within 24 hours is called daily rainfall, and any daily rainfall below10mm is called light rain,10.0-24.9mm is moderate rain, 25.0-49.9mm is heavy rain, 50.0-99.9mm is rainstorm, and100.0-250.

In addition, showers or thunderstorms that are often heard in summer belong to the order of light rain. In order to classify precipitation levels in more detail, small to moderate rain, moderate to heavy rain and heavy rain are often used in weather forecast.

Classification of rain size:

1, light rain: 1d (or 24h) rainfall is less than 10mm.

2. Moderate rain: 1d (or 24h) rainfall 10~25mm.

3. Heavy rain: 1d (or 24h) rainfall is 25~50mm.

4. Rainstorm: 1d (or 24h) rainfall is 50 ~100 mm.

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

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