The precipitation probability is 55%. Will it rain?

The probability of rain is 55%. Precipitation probability refers to the probability of rain in a certain area today. The probability of rain is this number within the forecast time and regional scope. Its intuitive meaning refers to the possibility of a thing happening. The forecast published in the form of probability is called probability forecast, and measures can be taken to reduce the inconvenience in life for the weather that may rain.

The calculation of precipitation probability forecast is actually whether it is precipitation or not, which is related to the variation law of precipitation itself and the characteristics of meteorological elements. By analyzing the data of various meteorological elements and using the principle of statistical calculation, scientists have obtained many equations for predicting precipitation probability, such as the method of predicting precipitation probability with precipitation data and the equation of predicting precipitation probability the next day with pressure, temperature and humidity of the day.

When constructing these equations, we can also use the products of numerical weather forecast. Of course, there are some more complicated forecasting methods. Because the probability forecast only means that there is a certain possibility of a certain weather, and the probability of forecasting precipitation is 30%, when arranging activities, it is necessary to give priority to no rain and make proper preparations for rain; The probability of forecasting precipitation is 60%, and the activities are mainly rainy, supplemented by no rain; The probability of forecasting precipitation is 80%, so be prepared for rain.

Related information:

Rain is a natural precipitation phenomenon, which is caused by the disturbance of atmospheric circulation. It is an indispensable part of the earth's water cycle and the only way for almost all terrestrial plants far away from rivers to replenish fresh water. Raindrops fall from the sky, big and small, fast and slow. The water on the earth's surface evaporates and rises, and it cools to form rain. Rainwater is the most important fresh water resource in human life.

The water drops falling from the clouds and the water on the land and sea surface evaporate into steam. When the steam rises to a certain height, it becomes small water drops when it is cold. These small water droplets form a cloud, where they collide with each other and merge into large water droplets. When it is too big for the air, it will fall from the clouds and form rain. Rain is the most important fresh water resource in human life, and plants thrive on the moisture of rain and dew. But the flood caused by rainstorm will also bring great disaster to mankind.