China News Service, August 21. According to the website of the Central Meteorological Observatory, this morning, heavy fog with a visibility of less than 1 km appeared in eastern and southern Hebei, eastern Beijing, central and southern Tianjin, western Shandong, eastern Henan and southern Henan, and local visibility. Less than 200 meters.

　　Starting on the 21st, Sichuan Basin, eastern Northwest China, Huanghuai, Jianghuai, Northeast China and other places will usher in an obvious precipitation weather process from west to east. There will be heavy to heavy rains in the above areas, heavy rains in some areas, and extremely heavy rains in local areas. ; Locally accompanied by strong convective weather such as short-term heavy rainfall, thunderstorms and gales.

　　From 21st to 22nd, there were moderate to heavy rains, local heavy rains or heavy rains in most parts of the Northeast region, and some parts were accompanied by strong convective weather such as short-term heavy rainfall, thunderstorms and gales.

　　It is estimated that from 8 o'clock on August 21st to 8 o'clock on 22nd, there will be some areas in northern Sichuan Basin, central and southern Shaanxi, southeastern Gansu, southwestern Shanxi, northwestern Henan, central and southeastern Heilongjiang, eastern Jilin, and eastern Liaoning. Heavy rains, including heavy rains (100-120 mm) in northeastern Jilin, central Shaanxi and other places.

Some of the above areas are accompanied by short-term heavy precipitation (the maximum hourly rainfall is 20-50 mm, and the local area can exceed 70 mm), and there are strong convective weather such as thunderstorms and winds (see Figure 1).

To this end, the Central Meteorological Observatory continued to issue a blue rainstorm warning at 6 o'clock on August 21.

Forecast map of heavy rainfall areas across the country (August 21st, 8 o'clock-22nd, 8 o'clock)

　　From 8 o'clock on August 21st to 8 o'clock on the 22nd, some areas in the northern Sichuan Basin, central and southern Shaanxi, southeastern Gansu, southwestern Shanxi, northwestern Henan, central and southeastern Heilongjiang, eastern Jilin, eastern Liaoning, and other places have large areas. Heavy rains, including heavy rains (100-120 mm) in northeastern Jilin, central Shaanxi and other places.

There are 4 to 6 winds in parts of the central and western parts of Inner Mongolia, the eastern part of the northwestern region, the Liaodong Peninsula and the Shandong Peninsula.

The central and southern waters of the Yellow Sea will have strong winds of magnitude 7 to 8 and gusts of magnitude 9; some of the sea areas can reach winds of magnitude 9 and gusts of 10 to 11.

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National Precipitation Forecast Map (August 21st, 8 o'clock-22nd, 8 o'clock)

　　From 8 o'clock on August 22 to 8 o'clock on the 23rd, there were heavy to heavy rains in parts of northern Heilongjiang, western Huanghuai, northeastern southwestern China, southeastern Tibet and other places. Among them, the central and eastern parts of Henan and the northeastern Sichuan Basin, etc. There were heavy rainstorms in some parts of the land, especially heavy rainstorms (250-300 mm) in the central part of Henan.

There are 4 to 6 winds in parts of the central and western parts of Huanghuai, northern Northeast China, central and western Inner Mongolia and other places.

National Precipitation Forecast Map (August 22nd from 8 o'clock to 23rd 8 o'clock)

　　From 8:00 on August 23 to 8:00 on August 24, there were moderate to heavy rains in parts of central and eastern Huanghuai, central and western Jianghuai, most of Jianghan, northwestern Jiangnan, eastern Southwestern, northern Yunnan, southern Sichuan plateau, southern Tibet and other places. Among them, parts of eastern and southern Shandong, northern Anhui, northern Jiangsu, southern and western Hubei, northwestern Hunan, northeastern Sichuan Basin, southwest Guizhou, and southeastern Tibet have heavy rains or heavy rains (100-150 mm).

There are 4 to 6 winds in parts of the central and western parts of Huanghuai, Jianghuai, central and western Inner Mongolia, and Liaodong Peninsula.

National Precipitation Forecast Map (August 23, 8:00-24, 8:00)