What are the reasons why meteorologists interpret the extremely heavy precipitation in Shanxi?

Heavy precipitation occurred in most parts of Shanxi. This process has the characteristics of large accumulated rainfall, long duration and extremely remarkable. The early precipitation was accompanied by lightning and strong convective weather, and the temperature dropped sharply in the later period. The unusually strong western Pacific subtropical high first spread from west to north, and then remained stable in Huanghuai area. The low-value system of westerly belt has formed a stable circulation situation in Shanxi, which has caused long-term precipitation weather in Shanxi.

The low-level shear line convergence system has been maintained for a long time, and the precipitation echo repeatedly passes through the central part of Shanxi, and the influence of the complex topography of Luliang Mountain and Taihang Mountain in Shanxi on the precipitation increase of the easterly airflow has led to extremely strong precipitation in the central part of Shanxi and the northern part of Linfen. Some rivers have high water levels and rich soil water content. We should attach great importance to and do a good job in the prevention and control of heavy precipitation and urban and rural floods, flash floods, mudslides, landslides and other heavy precipitation disasters. When yellow or above flood warning is issued or rainstorm occurs, it is suggested to adjust the travel plan to minimize going out.

If you live in dilapidated bungalows, low-lying courtyards, basements, piedmont plains or areas prone to geological disasters, you can take preventive measures, such as building fences, setting water baffles at the gate, configuring small pumps, preparing sandbags according to local conditions, and making preventive preparations in advance. When torrential rain or torrential rain or torrential rain occurs in a certain area, it will often lead to flash floods, dam failure of reservoirs, river flooding, collapse of houses, flooding of farmland and interruption of traffic and communication, which will bring serious harm to the national economy and people's lives and property.

Rainwater can't be released quickly, which leads to water accumulation in farmland and supersaturation of soil moisture, which will lead to more geological disasters. When driving in rainy days, the line of sight is easy to blur. It is best to slow down and try to keep a certain distance from the car in front. Don't get too close to the car, and don't overtake frequently. Because of the rain, the road surface becomes slippery, which leads to the decrease of tire adhesion. If the vehicle speed is too fast, the braking distance in emergency is 20%-40% longer than that in fine weather, the braking effect is obviously reduced and the probability of accidents is increased.