How to distinguish between heavy rain and light rain?

Rain and light rain in heavy rain are distinguished according to precipitation.

Light rain: it means that the rainfall within 24 hours is below 0. 1- 10.0mm;

Moderate rain: it means that the rainfall within 24 hours is10.1-25.0mm;

Rainstorm: refers to the rainfall of 25.1-50.0mm within 24 hours;

In the weather forecast, there are clear scientific definitions of "light rain", "moderate rain", "heavy rain" and "heavy rain" and "extremely heavy rain" in meteorology.

For example, "sporadic light rain" means that the precipitation time is very short and the precipitation does not exceed 0. 1 mm; "Sometimes there is light rain" means that the weather is gloomy and sometimes there will be short-term precipitation; "Shower" refers to the sudden start and end of summer precipitation, one big and one small, with heavy rainfall; "Thunderstorm" means a shower accompanied by lightning; "There is rain in some areas" means that precipitation occurs in a small area and its distribution is irregular.

Extended data:

Meteorology has strict regulations on snowfall, which is completely different from the standard of rainfall. Snow quantity is a measure measured by meteorological observers after melting the collected snow in a certain standard container.

There are strict regulations on snowfall in meteorology. Like rainfall, it refers to the amount of snowfall in a certain period of time. There are different standards for 24 hours and 12 hours. In weather forecast, it is usually to forecast the weather during the day or at night, mainly referring to the precipitation of 12 hours.

Snowfall refers to the depth of snow converted into the same amount of water, which can be converted into the thickness of snow according to the ratio of 1: 15. In this way, the snowfall of 97.7 mm is about 1.5 m thick snow, and the snowfall standards of each grade are as follows:

Sporadic light snow refers to the snowfall but less than 0. 1 mm;

Xiaoxue: greater than or equal to 0. 1 mm and less than1.0mm;

Medium snow: 1.0mm less than 3.0mm.

Heavy snow: greater than or equal to 3.0 mm and less than 5.0 mm;

Blizzard: snowfall is greater than or equal to 5.0mm. ..

References:

Baidu encyclopedia-rainfall