What does probability weather forecast mean?

1. If it is raining or snowing, the percentage number next to the raindrop or snowflake icon represents the probability of raining or snowing.

If the weather is sunny or cloudy, there is no such percentage.

Probability weather forecast, such as precipitation forecast, traditional weather forecast generally predicts rain or no rain, while probability weather forecast gives the percentage of possible precipitation. The higher the percentage, the greater the probability of precipitation.

Probabilistic weather forecast not only reflects the certainty of weather change, but also reflects the uncertainty and uncertainty degree of weather change. In many cases, this forecasting form is more suitable for decision-making in economic and military activities.

Extended data:

Forecasters can predict the percentage of precipitation opportunities in a certain area and a certain period of time through sorting, analysis, research and discussion according to various meteorological data. It is only a prediction of how many "chances" there will be precipitation, and it is not a guarantee of 100%.

In the next 36 hours, there will be three periods in each forecast area (every 12 hours 1 period), and there will be precipitation opportunities above 0. 1cm, which has nothing to do with precipitation time and precipitation area.

When arranging activities, prepare for rain according to the situation of no rain; The probability of forecasting precipitation is 60%. In the arrangement of activities, it mainly rains, supplemented by no rain. The probability of forecasting precipitation is 80%, so be prepared for rainfall.