Yesterday, Beijing began to warn of heavy rain. As a result, it hasn't rained yet. Why is the major weather forecast misreported?

After reading Cynthia's analysis (Beijing), the rain should have started at 5 am at the latest, and it is said that it has started to rain now. Precipitation is relatively local and develops with the advance of rain belt. It is always impossible to issue a rainstorm warning in advance and prepare for disaster prevention and mitigation. Generally, the weather forecast we receive is a 24-hour forecast, that is, the possible weather phenomena in the next 24 hours. If you want more details, for example, in the next three hours, this can be broadcast on the weather network or parts of Weibo. The accuracy of the weather forecast is beyond personal judgment. In fact, I think the main weather forecast is the most accurate.

Please accept it, thank you!