What level of red, yellow and blue is the weather forecast?

The weather forecast has the highest red warning, followed by yellow, and blue is the most common.

Weather forecast (measurement) is also called weather forecast (measurement) and weather report. Weather forecast is to use modern science and technology to predict the state of the earth's atmosphere in a certain place in the future. Since prehistoric times, human beings have begun to predict the weather and arrange their work and life accordingly (such as agricultural production and military operations). ).

Today's weather forecast mainly uses collecting a large number of data (temperature, humidity, wind direction and speed, air pressure, etc.). ), and then use the current understanding of atmospheric processes (meteorology) to determine future air changes. Because of the chaos of the atmospheric process and the fact that science has not fully understood the atmospheric process today, there will always be some errors in the weather forecast.

Extended data:

Forecast type

According to the time range, that is, according to the time limit of weather forecast, it can be divided into:

1, short-term forecast. According to the radar and satellite detection data, the local strong storm system in the future 1 ~ 6 hours is monitored and predicted.

2. Short-term forecast. Forecast the weather in the next 24 ~ 48 hours.

3. Medium-term forecast. Forecast for the next 3 ~ 15 days.

4. Long-term forecast. Refers to the forecast from 1 month to 1 year.

5. Ultra-long-term prediction. The forecast time limit is 1 ~ 5 years.

6. Climate outlook. 10 years old or older.

The statistical method is mainly based on the deviation between the monthly average of meteorological elements and the multi-year average. The method of long-term forecasting by numerical forecasting method is being tested and some progress has been made. The forecast time limit of 1-5 years is called ultra-long-term forecast, and the forecast time limit of 5 years and above 10 years is called climate outlook.

According to the area covered by the forecast, the weather forecast can be divided into:

1, large-scale forecast. Generally speaking, it refers to global forecast, hemispheric forecast, continental or national forecast. Mainly produced by World Meteorological Center, Regional Meteorological Center and National Meteorological Center.

2. Medium-term forecast. Often refers to the provincial (district), state and regional forecasts, which are made by provincial, municipal or state meteorological stations and regional meteorological stations.

3. Small-scale forecasting. Such as the forecast of a county, city, reservoir, airport, port, etc. These forecasts are made by the local weather station. ?

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