How to judge the weather by using the dBZ value in the basic reflectivity radar? Such as cloudy days, thunderstorms and sunny days. thank you

"dbz" can be used to estimate the intensity of rainfall and snowfall and predict the possibility of disastrous weather such as hail and strong wind. Generally speaking, the greater the value, the greater the possibility of rainfall and snowfall, and the stronger the intensity. When its value is greater than or equal to 40dbz, thunderstorm weather is more likely, and when its value is above 45dbz, strong convective weather such as rainstorm, hail and strong wind is more likely. Of course, when judging the weather, we should consider not only the echo intensity (dbz), but also the echo height, echo area, echo moving speed, direction and evolution. "Z" is the radar reflection factor, which is proportional to the sixth power of the raindrop spectrum diameter, and the unit is mm6/m3 (6 and 3 are both powers); "db" is a decibel, which can also be understood as an operation symbol. The conversion relationship between dbz and z is: dbz = 10 log(z).