Many people decide their travel according to the weather forecast, but why can't the weather forecast be 100% accurate?

Because the weather has been changing, the weather forecast can't accurately predict what the weather will be like the next day. The forecast is only a general forecast of the sky, and the next state of the weather can only be predicted according to the weather state and temperature. This does not mean that the prediction can be completely accurate. Because some unexpected changes are likely to occur, this is only a high probability prediction.

Moreover, the progress of mobile phones is getting bigger and bigger, and there are weather forecasts all the time. It can change accurately every hour, so the weather forecast on the mobile phone is still relatively accurate. But even in such a short time, some unexpected changes may occur. Therefore, compared with some weather forecasts that predict one week or half a month, the above data are not accurate. Because the number of days that it may rain and the number of days that the temperature rises cannot be determined, and the longer the time, the greater the possibility of change.

There are many ways to forecast the weather. One of the most traditional methods is to draw all meteorological data on the same piece of paper at the same time. This is what people call a weather map. After analyzing some elements of the weather map. Forecasters can know the weather forecast of the day and judge these structures. So as to know whether it is raining, and the drawing of weather map and some analysis need computers to complete.

Equation can be drawn by equation method. We can get the change of the atmosphere by solving the equation, because the process of the equation is very complicated. So even the simplest equation must be completed in a high-speed calculator. Weather forecast also has five components, which can be judged by professionals and some weather stations according to wind speed and direction. Satellite data can also be said to be more and more important because meteorological satellites can collect data from all over the world. In the production process, it is also synthesized by grasping the position of each place.