The first regional strong convection will hit the south this year, will it have a great impact on the south?

It should have a great impact. China Weather Network News Today (March 3), the south will experience a large-scale precipitation process from the night to the 6 th, with the night of the 4 th to the 6 th as the core period of this round of rainfall. From 5th to 6th, Jiangnan and South China will usher in the first regional strong convective weather this year, and there will be short-term heavy rainfall, thunderstorms and hailstorms in Jiangxi, Hunan and Guangdong and Guangxi. Please pay close attention to the forecast in time and take preventive measures. Gao Fei, a meteorologist from China Weather Network, said that the south will experience a large-scale precipitation process from the night of March 3 to 6, and the night of March 4 to 6 is the core period of this round of rainfall, with moderate to heavy rain and local heavy rain in parts of western Jianghuai, eastern Guizhou, Jiangnan and South China. ?

In addition, from 5th to 6th, there will be the first regional strong convective weather process from Jiangnan to South China this year. From the afternoon of the 5th to the 6th, there will be short-term heavy rainfall in central Jiangxi, southern Hunan, northwestern Guangxi, northeastern Guangdong and other places, accompanied by 8-9 thunderstorm and windy weather, with a maximum rainfall of 20-50mm per hour at/kloc-0. From a perennial point of view, after entering March, the convection activity in the south will increase exponentially, because the strength of warm and humid airflow will gradually increase at this time, and it is easy to excite unstable energy with the dynamic uplift of the south branch trough. Strong convection is frequent in Guangxi, northern Guangdong, Guizhou, Hunan, Jiangxi, southern Zhejiang and northern Fujian.

According to the statistics of climate data, the thunder and lightning in March mainly affected the areas along the Yangtze River and its south, namely, Chongqing, Hubei, southern Anhui, southern Jiangsu and southern China, including southern Jiangnan and southern China. Haunted? Relatively more frequently. Among the provincial-level cities, the number of thunderstorm days in Nanchang in March was 5.7 days, three times that in February. March is also the month with the most hail in southern China, and most of Jiangnan, South China and Southwest China have entered a period of high hail incidence. Judging from the occurrence time of hail, during the day, the hail time in all parts of China is generally concentrated in the afternoon to the evening, of which about 70% occurs in the afternoon of 13- 19, of which 14- 16 is the most. In February-March this year, the precipitation in southern China was generally less, especially in Jiangnan, South China and Yunnan-Guizhou Plateau, where it was less than 50%, and even doubled in many places. Provincial-level cities, such as Guangzhou, have a precipitation of 39.8 mm in February this year, which is only about half of the annual precipitation (7 1.8 mm). At present, the large-scale precipitation process in the south will be very beneficial to alleviate the meteorological drought in Jiangnan and South China and reduce the forest fire risk level.

However, local people should pay attention to prevent strong convective weather such as thunderstorms, short-term heavy precipitation and hail. In thunderstorm weather, citizens should try their best to go out, do not work outdoors, stay away from high-voltage power lines and isolated tall buildings, trees and flagpoles, and do not stand in empty highlands or under big trees to shelter from the rain. In case of hail and strong wind, you should quickly find shelter, stay away from temporary structures such as billboards and pay attention to safety.