Why didn't Yangquan broadcast the weather forecast after the evening news broadcast?

After the news broadcast, all local stations have their own news. After the news is the local weather forecast, which is more detailed and accurate. However, after the evening news in Yangquan was broadcast, the weather forecast was not broadcast because all local stations had their own news after the news was broadcast. Weather forecast, also known as weather forecast, refers to the use of modern science and technology to predict the state of the earth's atmosphere at a certain moment in the future.