Special symbols repre senting various weather phenomena, cloud shapes, sky conditions, etc. Includes weather phenomenon symbols for observation records and weather graphic symbols for media dissemination. Common weather symbols are:

1. The picture below shows the weather symbols of common rain. From left to right, they are light rain, moderate rain and heavy rain.

2. The weather symbols in the picture below repre sent sunny, cloudy, and overcast respectively.

3. The three weather symbols in the picture below are heavy rain, hail and thunderstorms.

4. The three weather symbols in the picture below are sleet, light snow, and moderate snow.

Extended information:

1. Light rain: the rainfall in 4 hours is less than 10.0 mm or the rainfall in 1 hour is less than 2.5 mm is called light rain.

2. Moderate rain: Moderate rain occurs when the rainfall within 24 hours is 10.0-24.9 mm or the rainfall within 1 hour is between 2.5-8.0 mm.

3. Heavy rain: When the rainfall in 24 hours is less than 25.0-49.9 mm or the rainfall in one hour reaches 8.1-15.9 mm, it is called heavy rain.

4. Heavy rain: When the rainfall within 24 hours reaches or exceeds 50.0 mm and the rainfall within 1 hour reaches or exceeds 16.0 mm, it is called a heavy rain.

A rainfall reaching 100.0 to 199.9 mm is called a heavy rainstorm; a rainfall reaching 200.0 mm is called a heavy rainstorm; thundershowers: refers to bursts of rainfall accompanied by thunder and lightning phenomena, starting from It is characterized by short rainfall, sudden start and end, and large changes in rainfall intensity.

The complete list of symbols that repre sent weather is as follows:

1. Weather phenomenon symbols

When a meteorological observer observes a certain When there is a weather phenomenon, the corresponding symbol should be recorded in the "Weather Phenomenon" column of the day in the observation book. Except for a few phenomena, its start and end times should also be recorded. Based on these symbols, combined with the intensity, coexistence and certain characteristics of weather phenomena, a set of symbols that can be filled in on weather maps is called map-filling symbols.

2. Weather graphic symbols

In order to facilitate public understanding and recognition, a set of images repre senting weather phenomena is developed for use on television or other public media.

1. Special symbols repre senting various weather phenomena, cloud shapes, sky conditions, etc. Includes weather phenomenon symbols for observation records and weather graphic symbols for media dissemination.

2. When a meteorological observer observes a certain weather phenomenon, he should record the corresponding weather phenomenon in the "Weather Phenomenon" column of the observation book on that day. Symbols, except for a few phenomena, should also record their start and end times. Based on these symbols, combined with the intensity, coexistence and certain characteristics of weather phenomena, a set of symbols that can be filled in on weather maps is called map-filling symbols.

3. The following figure is the weather phenomenon symbol table specified in the China Meteorological Administration's surface meteorological observation specifications:

Extended information:

1. Weather forecasting (pre diction) or meteorological pre diction (pre diction) is the use of modern science and technology to pre dict the state of the earth's atmosphere at a certain location in the future. Since pre historic times, humans have begun to pre dict the weather to arrange their work and life accordingly (such as agricultural production, military operations, etc.).

2. Today’s weather forecast mainly uses the collection of large amounts of data (temperature, humidity, wind direction and speed, air pre ssure, etc.), and then uses the current understanding of atmospheric processes ( meteorology) to determine future air changes. Because of the chaos of atmospheric processes and because today's science does not finally have a thorough understanding of atmospheric processes, weather forecasts will always have a certain amount of error.

3. The satellite cloud images of my country's Central Meteorological Observatory are taken from meteorological satellites such as "Fengyun-1". Using satellite cloud images and photos for analysis can improve the accuracy of weather forecasts. Weather forecasts are usually divided into three types based on the length of time: short-term weather forecast (2 to 3 days), medium-term weather forecast (4 to 9 days), and long-term weather forecast (more than 10 to 15 days). CCTV broadcasts mainly short-term weather forecasts every day.