The division of precipitation is from how many millimeters to how many millimeters is considered hea

Light rain: 1 day (or 24 h) rainfall less than 10mm.

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

Precipitation. precipitation) refers to the depth at which liquid or solid (after melting) water falls from the sky to the ground, without evaporation, infiltration, or loss, but accumulates in a horizontal plane. In mm, one decimal place is taken in meteorological observations.

In meteorology, there are often yearly, monthly, daily, 12-hour, 6-hour, or even 1-hour precipitation. All the rain and snow that falls during the year melt into water, which is called annual precipitation. The average annual precipitation of a place over many years is called the average annual rainfall of that place.

Precipitation Factors:

1) Location: Mainly the influence of land and sea location on precipitation, usually the interior of the continent is dry and rainless.

2) Atmosphere: Mainly includes atmospheric circulation.

The influence of fronts, cyclones (anticyclones) and other factors on precipitation.

The atmospheric circulation consists of three cycles.

and monsoon circulation. Seven pressure bands are formed in the three-turn circulation.

and six wind belts, of which the low pressure zone controls the area with more precipitation, and the high pressure is the opposite;Westerly wind belt.

The inner west bank has more precipitation than the east coast, and the east coast has more precipitation than the west bank in the trade wind belt. In the monsoon circulation, there is more precipitation in the summer monsoon than in the winter monsoon.

Fronts: Cold and warm fronts, and quasi-stationary fronts are prone to precipitation when they transit.

The cyclone corresponds to low pressure, and the airflow rises and rainsThe anticyclone corresponds to high pressure, and the air flow sinks on sunny days.

3) Topography: more precipitation on the windward slope and less precipitation on the leeward slope;Tall terrain can also prevent water vapor from entering, for example, the reason for Xinjiang's dry climate is not only deep inland, but also because of the high mountains around it.

4) Ocean currents.

The warm current has a warming and humidifying effect on the coastal climate;The cold current has a cooling and dehumidifying effect on the coastal climate. For example, Australia's deserts extend to a wide area on the west coast of the continent and are affected by trade winds and the cold snap of Western Australia, in addition to the control of the subtropical high;Another example, the United Kingdom and Norway.

The harbor does not freeze all year round thanks to the warm current of the North Atlantic.

role.

Based on rainfall in 24 hours (mm).

Light rain - moderate rain.

Moderate rain — heavy rain.

Heavy rain — heavy rain.

Heavy rain rain – heavy rain.

Heavy rainstorm 100 250

Heavy rain - Extremely heavy rain 175 300

Heavy Rainstorm 250

This is only a national standard, and it varies from place to place. For example, more than 80 mm in Guangdong is considered a heavy rain, and 25 in Ningxia is considered a heavy rain.

Sporadic light rain with a precipitation rate of less than millimeter hours.

Light rain precipitation rate in millimeter hours.

And. millimeters between hours.

Moderate rain precipitation rate in millimeter hours.

And. millimeters between hours.

Heavy rain precipitation rate in millimeter hours.

And. millimeters between hours.

Heavy rain precipitation rate in millimeter hours.

And. millimeters between hours.

Heavy rainstorms with a precipitation rate greater than millimeter hours.

Precipitation. 1 mm is a light rain section. Rainfall is divided into 6 levels. They are light rain, moderate rain, heavy rain, and heavy rain.

Heavy rain, extremely heavy rain. 1. Light rain: 1d (or 24h) rainfall less than 10mm.

2. Moderate rain: 1d (or 24h) rainfall of 10-25mm. 3. Heavy rain holds the sails:

1d (or 24h) rainfall of 25-50mm. <

Rainfall is divided into 6 levels. They are light rain, moderate rain, heavy rain, heavy rain, heavy rain, and extremely heavy rain.

Light rain: 1 day (or 24 h) rainfall less than 10mm. Sedan Tan.

Moderate rain: 1d (or 24h) rainfall of 10-25mm.

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

Heavy rain: 1d (or 24h) rainfall of 50-100mm.

Heavy rainstorm: 1d (or 24h) rainfall of 100-250mm.

Heavy rainfall: 1d (or 24h) rainfall of more than 250mm.

1 mm of precipitation refers to the amount of precipitation on one acre (square meter) to reach a water depth of 1 mm.

Precipitation intensity is a measure of the magnitude and speed of rainfall. Precipitation is measured by the depth of rain that falls from the sky to the ground (the scale includes rain, snow, fog, etc.). There are generally two ways to represent the amount of precipitation:

One is measured by the depth of rainfall (snow) and the other is measured by the amount of rainfall (snow) per unit of time.

Generally speaking, light rain refers to rain with precipitation of no more than 10 mm in 24 hours, moderate rain is mm, heavy rain is mm, heavy rain is mm, heavy rain is mm, heavy rain is 100-250 mm, and extremely heavy rain is more than 250 mm.

A daily rainfall of less than 10 mm is considered light rain; The daily rainfall in millimeters is moderate rain; Rainfall in millimeters is heavy rain. Rainfall refers to the depth at which liquid or solid (melted) water falls from the sky to the ground, without evaporation, infiltration, or loss, and accumulates in the horizontal plane. The amount of precipitation is measured in mm, and one decimal place is taken in meteorological observations, which can visually indicate the amount of rainfall.

Light rain, moderate rain, heavy rain, heavy rain, etc., are generally measured in daily rainfall. Among them, light rain refers to daily rainfall of less than 10 mm; Moderate rain day rainfall is millimeters; Heavy rain rainfall in millimeters; Rainfall in millimeters; Heavy rainfall of 100-250 mm; Heavy rainfall of more than 250 mm.

Rainfall is generally measured with a rain measuring cylinder, so precipitation may contain a small amount of dew, frost and pine. In meteorology, there are often yearly, monthly, daily, 12-hour, 6-hour or even 1-hour precipitation, and the rain and snow that falls in 6 hours all melt into water, which is called 6-hour precipitation; All the rain and snow that falls in 24 hours melt into water, which is called 24-hour precipitation. All the rain and snow that falls in a decade melt into water, which is called the ...... precipitationAll the rain and snow that falls during the year melt into water, which is called annual precipitation.

The amount of liquid precipitation is called rainfall, and sometimes the two are also used as synonyms. The amount of precipitation per unit of time is called precipitation intensity, which is usually measured in mm h or mm min. The amount of rainfall per unit of time is called rain intensity.

The average annual precipitation of a place over many years is called the average annual rainfall of that place. For example, the average annual rainfall in Beijing is millimeters, and the average annual rainfall in Shanghai is millimeters. Precipitation phenomenon refers to a weather phenomenon in which liquid water or solid water in clouds falls to the ground, and accurate measurement of precipitation is of great significance for weather forecasting, climate analysis, and monitoring and early warning of natural disasters such as floods, landslides, and debris flows.

10 mm, ** Meteorological Observatory stipulates that the daily rainfall within 24 hours is less than 10 mm, which is called light rain, and generally this light rain can only wet clothes and shoes, and there is no water accumulation on the road.

The China Meteorological Administration stipulates that the rainfall within 24 hours is called the daily rainfall, and all daily rainfall below 10 mm is called light rain, millimeters are moderate rain, millimeters are heavy rain, heavy rain is millimeters, heavy rainfall is millimeters, and more than millimeters are called extremely heavy rainfall. The minimum amount of rainfall per hour is, which is the bottom line of rainfall.

Anything below this is not considered a light rain. Light rain refers to how many millimeters of rain falls in a 24-hour period.

Light rain refers to rainfall of less than 10mm in 24 hours and less than or equal to one hour.

Light rain refers to rain that does not fall more than 10 mm in a 24-hour period. Light rain refers to rain that does not fall more than 10 mm in a 24-hour period. Light rain means "not a lot of rain", which is characterized by clear visible raindrops, no floating phenomenon, no splashing on the ground, slow water accumulation in the depression, weak rain sound on the house, only dripping water on the eaves, and walking in the rain for a short distance without an umbrella without getting your clothes wet.

Light to moderate rain is 5 mm 18 mm, moderate rain is 10 mm 25 mm, moderate to heavy rain is 18 mm 38 mm, heavy rain is 25 mm 50 mm, heavy to heavy rain is 38 mm 75 mm Tongsan. Rainfall of more than 50 mm in 24 hours is called heavy rain, more than 100 mm is called heavy rain, and more than 200 mm is called extremely heavy rain.

Introduction: In the terms used in the forecast of Tianbilun rotten weather, different expressions have different meanings. For example, "sporadic light rain" refers to precipitation that is very short, with no more than millimeters of precipitation.

Sometimes there is light rain" means that the weather is overcast, and sometimes there is a short period of precipitation. "Rainfall" refers to the sudden start and end of precipitation in the summer, with a large burst and a small burst, with heavy rainfall. "Thundershower" refers to a rain shower accompanied by thunder and lightning.

"Rain hand leakage in local areas" refers to the occurrence of precipitation in a small area, and the distribution is not regular.

Sporadic light rain with a precipitation rate of less than millimeter hours.

Light rain Precipitation rate between millimeter hours and millimeter hours Moderate rain Precipitation rate between millimeter hours and millimeter hours Heavy rain Precipitation rate between millimeter hours and millimeter hours Heavy rain Precipitation rate between millimeter hours and millimeter hours Heavy rain Precipitation rate greater than millimeter hours.