What is a unilateral rainstorm? What does unilateral rainstorm mean? Nanmalong County suffered a once-in-a-century unilateral rainstorm?

It's the rainstorm that the meteorological station didn't forecast.

Meteorological indicators are not obvious, so it is safe to predict precipitation. However, it is really difficult in science and technology to forecast this rare rainstorm for a long time in advance, and advanced meteorological stations can only give an early warning ten minutes to an hour or two in advance. The biggest difficulty is that the theory is still unclear. What force can gather so much water vapor into the sky in a very short time, and then precipitation with an average height of more than 200 mm appears in a very short time? The interaction between its formation mechanism and weather system requires a major breakthrough in meteorological principles and further research and discussion. It is also necessary to increase the detection means and density, as well as the integration of meteorology and disaster prevention theory and practice.

But in general, the rainstorm in Nanmalong County should be predicted 15 minutes in advance, and it will turn into a complete unilateral rainstorm, and the meteorological department also has certain responsibilities.