The amount of precipitation on that day was 20 mm, what kind of rain does it fall according to the r

The level of rainfall is divided into light, moderate, heavy, heavy rain, heavy rain, heavy rain, and extremely heavy rain according to the amount of rainfall in 24 hours. Light rain: the rainfall is less than 10 mm, the raindrops are clearly identifiable, and the rain does not splash when it falls on the roof tiles and hard ground, and the sound of rain is gentle and dripping; It usually takes two minutes for the slabs and roof tiles to be fully wetted, and puddles form slowly.

Moderate rain: The rainfall is between 10 and 25 mm, the rustling rain can be heard, the rain falls like a line, the raindrops are not easy to distinguish, and the water falls to the house hole and the hard ground slightly splashed, and the puddle forms quickly. Heavy rain:

The rainfall is between 25 and 50 millimetres, and when it rains heavily, the rain falls like a downpour, blurring into patches, and the raindrops fall on the roof tiles and hard ground and splash in all directions, the sound of the rain is like a drum, and the waterhole forms very quickly. Heavy rainfall: Rainfall is between 50 and 100 mm, and the road is waterlogged.

Heavy rainfall between 100 mm and 200 mm of rainfall is called; Rainfall of more than 200 mm is called extremely heavy rainfall, and the low-lying areas are flooded. Showers: refers to showers of precipitation, the raindrops are larger, the rain falls and stops, the intensity changes sharply, the sky is dark when it rains, sometimes it is suddenly cheerful, revealing a sunny day, and sometimes accompanied by thunder.

According to the precipitation intensity scale of the National Weather Service, the rainfall process is moderate rain when the precipitation is 5-15mm in 12 hours or 10-25mm in 24 hours. Therefore, rain with a precipitation of twenty mm should be classified as moderate rain.

However, precipitation standards and climatic conditions vary from place to place, for example, in Xinjiang, 10-20mm of precipitation may already be considered heavy rain.

As a result, specific rainfall levels may vary depending on location and climatic conditions.

1 day (or 24 hours) rainfall 10 25mm is moderate rain. It is moderate rain.

20 mm of precipitation.

It's moderate rain. 20 mm of precipitation means that the depth of rainfall reaches 20 mm in 24 hours, and according to the classification of precipitation, it can be seen that 20 mm of precipitation type water belongs to the moderate rain level.

1. Light rain: the rainfall is less than 10 mm, the raindrops are clearly identifiable, and the rain does not splash when it falls on the roof tiles and hard ground, and the rain sound is gentle and dripping; It usually takes two minutes for the slabs and roof tiles to be fully wetted, and puddles form slowly.

2. Moderate rain: the rainfall is between 10-25 five millimeters, the sound of rustling rain can be heard, the rain falls like a line, the raindrops are not easy to cover and sell guess, and the water falls into the house hole and the hard ground slightly splashed, and the puddle is formed quickly.

3. Heavy rain: the rainfall is between 25-50 mm, when it rains heavily, the rain falls like a downpour and blurs into pieces, and the raindrops fall to the roof tiles and hard ground and splash up to several inches, the rain sound is like a drum, and the waterhole is formed very quickly.

4. Slow rainstorm: the rainfall is between 50-100 mm, and the road is waterlogged. Rainfall between 100-200 mm is called heavy rainfall; Rainfall of more than 200 mm is called heavy rainfall, and the low-lying areas are flooded.

Rainfall in a 24-hour period is between millimeters of light rainfall (scattered light rain);

Light rain between millimeters of rainfall in 12 hours or millimeters of rainfall in 24 hours;

Moderate rain is defined as 10 mm of rainfall in 12 hours or 10 mm of rain in 24 hours;

Heavy rain with a rainfall of millimeters in 12 hours or between millimeters of rainfall in 24 hours;

Heavy rain is defined as a rainfall of millimeters in 12 hours or between millimeters of rainfall in 24 hours;

Heavy rain with millimeters of rainfall in 12 hours or between millimeters of rainfall in 24 hours;

Rainfall between 12 mm in 12 hours or mm in 24 hours is considered extremely heavy rain.

The standard ** is the national standard GB T 28592-2012).

Step 1: On the home page of Xihe.

Make a geolocation selection. You can choose either single-point data or regional average data.

<>Step 2: Confirm the data source. Historical data can be selected from Xihe Data Source, Lavu European Medium-Range Weather Center, and NASA; **Data can be selected from the Wheel Letter or the German Meteorological Office.

The 24-hour rainfall is 100 250 mm, and the level of rain is (heavy rain).

According to the regulations of the China Meteorological Administration: the rainfall within 24 hours is called the daily rainfall, where the daily rainfall is less than 10 mm is called light rain, millimeters are moderate rain, millimeters are heavy rain, heavy rain is millimeters, heavy rainfall is early millimeters, and superscattered and cautious millimeters are called extraordinarily heavy rains.

The rainfall levels are divided as follows:

Light rain: Rainfall of less than 10 mm from 8 a.m. today to 8 a.m. the next day.

Moderate rain: 10 to 25 mm of rain from 8 a.m. to 8 a.m. today.

Heavy rain: 25 to 50 mm of rain from 8 a.m. today to 8 a.m.

Heavy rain: 50 to 100 mm of rain from 8 a.m. today to 8 a.m.

Heavy rain: More than 200 mm of rain from 8 a.m. today to 8 a.m. the next day.

Rainfall classification.

Light rain: Rainfall of less than 10 mm on a day (8 a.m. to 8 a.m. the next day).

Moderate rain: 10-25 mm of rainfall per day.

Heavy rain: 25-50 mm of rainfall per day.

Heavy rain: 50,100 mm of rainfall per day. Heavy rain:

Daily rainfall is more than 200 mm. 2. Wind level classification Level 6: wind speed in meters and seconds, 39 49 kilometers per hour, difficulty in raising umbrellas, shaking of large tree branches, and whirring sound of power lines.

Level 7: Wind speed in meters and seconds, 50 61 kilometers per hour, the whole tree shakes, and it is inconvenient to walk in the wind. Level 8:

The wind speed is meters and seconds, 62-74 kilometers per hour, the branches are broken, and there is a lot of resistance for people to move forward. Level 9: Wind speed of meters and seconds, 75 88 kilometers per hour, blowing down the grass house and blowing the roof tiles.

Category 10: Wind speed of meters per second, 89 102 kilometers per hour, can blow down forests and damage general buildings. Level 11:

The wind speed is meters and seconds, 103 117 kilometers per hour, the destructive force is high, blowing down large trees, and the general buildings are seriously damaged. Category 12: Wind speed greater than meter second, more than 117 kilometers per hour, monstrous waves, extremely destructive force.

3. Classification of tropical cyclones Tropical cyclones are a huge vortex phenomenon in the atmosphere, the center is the eye of a typhoon, the wind is calm, and the surrounding area near the center is accompanied by strong updrafts and storms, which is the worst danger area. Tropical storm: A tropical cyclone with winds of magnitude 8 and 9 near the center.

Severe Tropical Storm: A tropical cyclone with winds of magnitude 10 and 11 near the center. Typhoon:

A tropical cyclone with winds of force 12 near the center. Strong typhoon: A tropical cyclone with winds of 12 or higher near the center.

4. Classification of drought Drought is a climatic phenomenon in which the air is dry and the soil is short of water due to long-term lack of rainfall. Minor drought: 16 30 consecutive days without rainfall, 16 to 30 days in spring, 16 to 25 days in summer, and 31 to 50 days in autumn and winter.

Moderate drought: 31 to 45 consecutive days without rainfall, 26 to 35 days in summer, and 51 to 70 days in autumn and winter. Great drought:

The number of consecutive rain-free days ranged from 46 to 60 in spring, 36 to 45 in summer, and 71 to 90 in autumn and winter. Extreme drought: No rainfall for more than 61 days in spring, more than 46 days in summer, and more than 91 days in autumn and winter.

5. Classification of Flood Flood refers to extremely large runoff. This runoff is often flooded because the river channel cannot hold it. According to the water source and the time of occurrence of floods, floods can generally be divided into two categories: spring snowmelt floods and torrential floods.

General flooding: return period less than 10 years. Larger floods:

Return period 10-20 years. Great floods: return period 20 50 years.

Mega floods: return period of more than 50 years.

Precipitation. 5mm belongs to light rain, and precipitation can be divided into liquid precipitation and solid precipitation according to its different physical characteristics. Liquid precipitation has a drizzle.

Rain, thundershowers.

Freezing rain, showers, etc., solid precipitation includes snow, hail, graupel, etc., as well as liquid solid mixed precipitation: such as sleet, etc.

In meteorology, the amount of precipitation is used to distinguish the intensity of precipitation. It can be divided into: light rain, moderate rain, heavy rain, and heavy rain.

Heavy rain, extremely heavy rain.

Light rain: the raindrops are clearly visible, and there is no floating phenomenon; Do not splash on the ground; The accumulation of water in the depression is very slow; The sound of rain on the house is faint, and the eaves are only dripping with lead and filial piety; 12. The precipitation within the manuscript is less than 5mm or the precipitation within 24 hours is less than 10mm.

Moderate rain: the rain falls like a line, and the raindrops are not easy to distinguish; Falling hard ground splashes; The water accumulation in the depression is relatively fast; There was a rustling of rain on the roof; Rainfall process with 5 15 mm of precipitation in 12 hours or 10 25 mm of precipitation in 24 hours.

Heavy rain: The rain falls like a downpour, blurred into patches; The depression accumulates water very quickly; There was the sound of rain on the roof; A rainfall process with 15 30 mm of precipitation in 12 hours or 25 50 mm of precipitation in 24 hours.

Heavy rain: Any rainfall process in which the amount of precipitation exceeds 50mm in 24 hours is collectively referred to as heavy rain.

Light rain. Light rain: precipitation less than 5 mm in 12 hours, or less than 10 mm in 24 hours; Light rain is the second lowest precipitation intensity level in the six-level classification method of precipitation grade, except for trace precipitation.

The raindrops of the light rain are clearly visible, there is no floating phenomenon, the ground is not splashed, the depression is slow to carry water, the sound of rain on the house is weak, the eaves are only dripping, and you can walk a short distance in the rain without an umbrella without getting your clothes wet.

Precipitation is a key physical process that connects weather, climate, water cycle, etc., and is the ultimate source of clean water that supports ecosystems and human survival.

Light rain is less intense, and it is more susceptible to anthropogenic activities such as global warming and increased aerosol content than other levels of precipitation, while moderate to heavy rain is generally affected by large-scale circulation changes, such as circulation and water vapor, so light rain changes are one of the phenomena affecting climate by human activities.

Sporadic light rain: The rate of precipitation is less than millimeter hours.

Light rain: The rate of precipitation is between millimeter-hours and millimeter-hours.

Moderate rain: The rate of precipitation is between millimeter-hours and millimeter-hours.

Heavy rain: The rate of precipitation is between millimeter-hours and millimeter-hours.

Heavy rain: The rate of precipitation is between millimeter-hour and millimeter-hour.

Heavy rainstorm: The rate of precipitation is greater than millimeter hours.

Rainfall in a 24-hour period is between millimeters of light rainfall (scattered light rain);

Light rain between 12 hours of rainfall millimeters or 24 hours of rainfall or rainfall millimeters;

Moderate rain with 12 mm of rain in 12 hours or between 10 mm of rain in 24 hours;

Heavy rain with a rainfall of millimeters in 12 hours or between millimeters of rainfall in 24 hours;

Heavy rain is defined as a rainfall of millimeters in 12 hours or between millimeters of rainfall in 24 hours;

Heavy rain with millimeters of rainfall in 12 hours or between millimeters of rainfall in 24 hours;

Rainfall between 12 mm in 12 hours or mm in 24 hours is considered extremely heavy rain.

Standard Lap Wu Zhun ** is the national standard GB T 28592-2012) to query precipitation data as follows.

Step 1: On the home page of Xihe.

Make a geolocation selection. You can choose either single-point data or regional average data.

<>Step 2: Confirm the data source. Historical data can be selected from Xihe Data Source, European Medium-Range Weather Center, NASA; **Data can be selected from the German Meteorological Office.

Meteorologists determine the level of rain based on the amount of precipitation in a day (24 hours).

Weather refers to the specific state of the atmosphere in a certain area close to the earth's surface in a short period of time. Weather phenomena refer to various natural phenomena that occur in the atmosphere, that is, the comprehensive performance of the spatial distribution of various meteorological elements (such as temperature, air pressure, humidity, wind, clouds, fog, rain, flash, snow, frost, thunder, hail, haze, etc.) in the atmosphere in a certain instant. Fiber dismantling.

Weather processes are the process of changing weather phenomena in a certain area over time. All kinds of weather systems have certain spatial and temporal scales, and the various scale systems are intertwined and interact with each other. The combination of many weather systems constitutes a large-scale weather situation that constitutes the atmospheric circulation of the hemisphere or even the world.

Weather systems are always in the process of rebirth, development and disappearance, and have their corresponding distribution of weather phenomena at different stages of development. Wind is affected by different factors such as atmospheric circulation, topography, and water, and has a variety of manifestations, such as monsoon, local sea and land breeze, valley wind, foehn wind, etc. To put it simply, wind is the directional motion of air molecules.

To understand the causes of wind, we must first clarify two key concepts: air and air pressure. The composition of the air includes:

Nitrogen molecules (78% of the total volume of air), oxygen molecules (about 21%), water vapor and other trace components. All the air molecules were moving at a rapid pace, colliding with each other and with anything on the horizon.