How many weather forecast signs are there?

Weather symbols are divided into two forms, namely day and night.

Weather symbols during the day:

Weather symbols at night:

Meteorological disaster warning signals (hereinafter referred to as Early warning signal) refers to the early warning information released to the public by meteorological stations affiliated to meteorological authorities at all levels. Early warning signals consist of names, icons, standards and defense guidelines, and are divided into typhoon, heavy rain, blizzard, cold wave, strong wind, sandstorm, high temperature, drought, thunder and lightning, hail, frost, heavy fog, haze, road ice, etc.

Meteorological disaster early warning signals are generally divided into four levels (levels IV, III, II, and I): blue, yellow, orange, and red, repre senting general, severe, serious, and extremely serious respectively. At the same time Marked in Chinese and English, consistent with all emergency response levels and colors of the country.

Extended information:

Weather forecast (measurement) or meteorological forecast (measurement) 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. pre dict. 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.). Today's weather forecasting is primarily based on collecting large amounts of data (temperature, humidity, wind direction and speed, pre ssure, etc.) and then using current knowledge 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. [1]

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.

Reference: Baidu Encyclopedia entry weather forecast