Recently, cold air frequently strikes. It is expected that a new cold air will affect the northeast and Eastern Inner Mongolia today and tomorrow (17-18), and the local temperature will be above 8 ℃. Starting from the 18th, the cold air with the widest range of influence in the second half of this year will attack. Affected by it, the autumn process in North China and other places will speed up, and the high temperature in the South will subside. In terms of rain, there is more rain in the northwest and southwest, and the sunny range will be expanded from the 20th.
Two streams of cold air will attack frequently, and the high temperature in the South will subside
From the 15th, the cold air affected Inner Mongolia, Northeast China and other places, bringing precipitation and cooling. For example, there was sleet in Heihe River, Heilongjiang Province, feeling the cold of winter. In Hunan, Jiangxi, Guangdong and other places, high temperatures still appear in some areas. It is hot summer here.
Today and tomorrow, the new cold air on yigudong road will continue to affect northeast China, Eastern Inner Mongolia and other places. It is expected that from 17th to 18th, affected by the cold air, the temperature in eastern Inner Mongolia, northern North China, Northeast China and the Middle East of Qinghai Tibet Plateau will drop by 4 ~ 6 ℃ and above 8 ℃ locally, accompanied by northerly winds of 5 ~ 6 and gusts of 7 ~ 8; Affected by it, early frost occurred in some areas of eastern Inner Mongolia and Heilongjiang from 18th to 20th, and it was rainy and snowy in the eastern Qinghai Tibet Plateau.
Starting from the 18th, the cold air with the widest range of influence in the second half of this year will attack. The cold air on the West Road will affect the northwest, North China and other places, and drive away the high temperature southward. This cold air will first cool some areas in western Gansu, western Inner Mongolia and Qinghai by 4 ~ 8 ℃. Around the 20th, under the influence of the cold air, the temperature in Beijing, Tianjin and Hebei will hit a new low since the second half of this year. It will become cooler in the morning and evening, which will also promote the process of autumn.
For the south, the intensity and scope of high temperature in the three days from now will continue to shrink slightly, mainly in Jiangxi, Fujian, Guangdong and other places. After the 20th, the temperature dropped under the influence of cold air, the maximum temperature in the north of Nanling generally fell below 30 ℃, and the minimum temperature in Jianghuai, Jianghan and the north of Jiangnan fell below 20 ℃. However, there will be sporadic high temperatures in Guangdong and Guangxi, and the heat is still hot.
Meteorological experts remind that the recent cold air is frequent and the temperature in the North fluctuates greatly. The public should pay attention to the temperature change and add clothes in time to avoid catching a cold.
Autumn rain in West China will continue until the end of the middle of the 20th, and the sunny range will expand
Since August 27, the accumulated rainfall in most of Western China has exceeded 100mm, and that in some areas such as southern Shaanxi, Northeastern Sichuan and Northwestern Guizhou has exceeded 250mm. It is expected that before the end of the middle of the year, there will still be frequent rain in the northwest and southwest. After the 20th, the sunny range will expand, and Shaanxi, central and Eastern Sichuan, Chongqing, Guizhou and other places will also clear up.
The Central Meteorological Observatory predicts that from 08:00 on September 17 to 08:00 on September 18, there will be moderate rain and local heavy rain (25 ~ 45 mm) in some areas of central Qinghai, southern Shaanxi, Eastern Sichuan Basin, central and Western Guizhou, Western and southern Guangxi, southwest Guangdong and Southeast Tibet. The southern Xinjiang basin, the Middle East of Inner Mongolia, the north of North China, the middle and west of Northeast China, Hubei, Zhejiang and other places have winds of grade 4 ~ 6 and above in some areas.
From 08:00 on September 18 to 08:00 on September 19, moderate rain occurred in some areas, such as southern Qinghai, southern Gansu, Western Shaanxi, central Sichuan Basin, Southwest Guizhou, Eastern and Western Yunnan, Southeast and Northeast Tibet. There are 4-6 winds in some areas of Tianshan, Xinjiang and central and western Gansu.
From 08:00 on September 19 to 08:00 on September 20, moderate rain and local heavy rain (25 ~ 35mm) occurred in some areas, such as northern Shanxi, southern Shaanxi, Eastern Sichuan, southern and northwestern Sichuan, Western Chongqing, western Guizhou, Northeastern Yunnan, eastern Tibet and Eastern Taiwan. There are 4-6 winds in some areas of Western Inner Mongolia.
Since the beginning of autumn rain in Western China, the rainfall in some areas of Sichuan, Shaanxi and Gansu has been significantly higher than that in the same period of the year. In the future, the rainfall in some areas will continue. Local people should pay attention to prevent mountain torrents, debris flows, landslides and urban and rural waterlogging that may be caused by continuous heavy rainfall.