Why is there heavy rain in Sichuan these days?

The Central Meteorological Observatory issued an orange rainstorm warning at 6 o'clock yesterday. Yesterday, from day to night, there were heavy rains in the eastern Sichuan Plateau and the western Sichuan Basin, southwestern Shaanxi, southwestern Shanxi, southern Hebei, north-central Shandong and Shandong Peninsula. There are heavy rainstorms in parts of western Sichuan Basin, southeastern Hebei and northern Shandong, and the precipitation is100 ~120mm.

The weather forecast issued by the Central Meteorological Observatory said that in the next three days, there will be heavy rains in southern Shaanxi, North China, Huanghuai, Jianghuai, Sichuan and other places, and there will be high temperature weather in most parts of the south of the Yangtze River and central and eastern South China.

Affected by cold and warm air, in the next three days, there will be small to moderate rain or showers in western and northern Xinjiang, central and eastern Qinghai-Tibet Plateau, central and eastern Northwest China, Hetao area, northeastern Inner Mongolia, northeast China, Huanghuai, Jianghuai, Jianghan, western South China and southwest China, among which there will be small to moderate rain in most parts of Sichuan, western and northern Chongqing, southwestern Shaanxi, central and southern North China, Huanghuai, northern Jianghuai and northern Jianghan. Some of the above areas are accompanied by strong convective weather such as thunderstorms and hail.

Affected by the subtropical high, in the next three days, there will be high temperature of 35℃ in parts of southern Hubei, most of the south of the Yangtze River and central and eastern South China, and some areas can reach above 37℃.

Today and tomorrow, the specific forecast is as follows:

From 8: 00 on the 9th to 8: 00 on 10, there was heavy rain or rainstorm in most parts of Sichuan, southwestern Shaanxi, northern Jianghan, western and southern Huanghuai, and there was heavy rain in some areas. The above areas will be accompanied by strong convective weather such as thunderstorms and hail.

From 8: 00 on 10 to 8: 00 on 1 1 0, there were small to moderate rains or showers in western Xinjiang, central and eastern Qinghai-Tibet Plateau, southeastern part of northwest China, northeastern Inner Mongolia, Heilongjiang, most of Jilin, most of Huanghuai, most of Jianghuai, Jianghan, northwestern Hubei, central and western Guangxi, Hainan, and southwest China, among which, northeastern Tibet, southwestern China and other places.

The rain in Chengdu is a little cold today.

(Chengdu Business Daily reporter Huang Ke) Chengdu turned from rain to shower from day to night today, with a temperature of 20 ~ 25 C; It will be cloudy from day to night tomorrow with a temperature of 22~27℃.

According to the forecast of Sichuan Professional Meteorological Observatory, it will arrive at 1 1 tomorrow. There will be showers on cloudy days in Bazhong, Dazhou, Guang 'an, Ganzi, Liangshan and Panzhihua, and there will be heavy rain in some areas. The showers in other cities and prefectures in our province will turn cloudy. Within 24 hours, the lowest temperature in the basin is 20~22℃ and the highest temperature is 25~27℃.

Affected by high altitude and low trough and cold air on the ground, there was an obvious thunderstorm weather process in our province from day to night today. There are short-term strong winds and thunder and lightning during thunderstorms, including heavy rains in Deyang, Chengdu, Ya 'an, Leshan, Meishan, Bazhong, Nanchong, Suining, Ziyang, Neijiang, Zigong and Dazhou, heavy rains in Aba, Ganzi and northern Liangshan, and heavy rains in some places.