Why is the weather forecast more and more inaccurate now?

Today's weather forecast is not as good as that in the 1980s. Today's meteorological equipment is much more advanced than it was more than 30 years ago, but the forecast is not as accurate as it was then. I wonder what those people at the meteorological station are doing. Television was not popular in the 1980s, and the weather forecast was listened to on the radio every day. At that time, the accuracy rate of scattered showers in some areas was 85%, and now the accuracy rate is less than 50%. At that time, the weather forecast was always 48 hours, but now it is not allowed to be 24 hours, and sometimes it is even more exaggerated. It is raining, and it is said to be sunny.