Now all weather forecasts are the result of using big data of science and technology. For example, there is a spherical building in Guantouling, Beihai, which is a 20 10 Doppler weather radar put into use. It is responsible for monitoring the changes of clouds within 200 kilometers. In addition to uploading data to the Central Meteorological Observatory, it can also provide local rainfall.

By monitoring the change of cloud, we can infer the moving speed of precipitation cloud, the structural characteristics of wind field and the vertical airflow speed, which can effectively monitor the occurrence and development of severe weather such as rainstorm, hail and tornado. At the same time, large-scale precipitation can be estimated by quantitatively measuring echo intensity. With the development of science and technology, there are more and more forecasting products. The numerical forecast systems in China, Japan and Europe are all * * *, and the task of local stations now is to collect raw data and serve the whole system.

Of course, with the increasing dependence on data products, there are also problems. Once the primary information is inaccurate, it will affect the results, which is why citizens sometimes report inaccurate weather forecasts.