China News Service, April 21. According to the website of the Central Meteorological Observatory, affected by the cold air, the temperature in most of Inner Mongolia, most of Northeast China, most of North China, and northern Huanghuai generally dropped from 8:00 on the 21st to 20:00 on the 22nd. 4～8℃, and some areas drop by 8～10℃.

During the daytime from the 21st to the 22nd, due to the influence of the cyclone, there will be light rain in most of the northeastern region, including moderate to heavy rain in parts of central Heilongjiang and northern Jilin.

Last night, sand and dust weather occurred in central and western Inner Mongolia, Ningxia, Shaanxi, Shanxi and other places

　　During the daytime yesterday, the areas affected by sand and dust were mainly located in the central, western and southeastern parts of Inner Mongolia, central and western Heilongjiang, and central and western Jilin. Sandstorms occurred in Bayannaoer and Baotou in Inner Mongolia; The central and western parts of Inner Mongolia expanded south to the central and northern parts of Ningxia, northern Shaanxi, and northern Shanxi. There were sandstorms in Bayannuoer and Xilingol League in Inner Mongolia. This morning, the peak concentration of PM10 in Datong, Shanxi exceeded 1500 micrograms per cubic meter; The dust weather has weakened and the air quality has improved. This morning, only the southern part of Heilongjiang has floating dust weather.

　　From last night to this morning, gusts of magnitude 7 to 9 occurred in central and western and southeastern Inner Mongolia, northern Ningxia, central and northern Shanxi, Hebei, Beijing, and northeast China, and 11 to 12 in central Inner Mongolia.

　　Yesterday, the precipitation across the country was weak, and only heavy rain occurred in southern Yunnan and other places.

Cold air affects northeastern Inner Mongolia and other places

　　Affected by the cold air, from 08:00 on the 21st to 20:00 on the 22nd, the temperature in most of Inner Mongolia, most of Northeast China, most of North China, and northern Huanghuai generally dropped by 4 to 8 °C, and some areas dropped by 8 to 10 °C. , the temperature of some areas in southeastern Inner Mongolia, northeastern Heilongjiang and other places can reach more than 12 °C; most of the above-mentioned areas have winds of magnitude 5 to 7, gusts of magnitude 8 to 10, and local gusts of wind force of magnitude 11 or more.

The Central Meteorological Observatory continued to issue strong wind cooling forecasts at 06:00 on April 21.

Figure 1 National gale and cooling forecast map (08:00 on April 21st - 20:00 on April 22nd)

　　Affected by strong winds and sand and dust transmission, it is expected that from 08:00 on the 21st to 08:00 on the 22nd, the southern Xinjiang Basin, the central and western and southeastern Inner Mongolia, Ningxia, the central and northern Shaanxi, the central and northern Shanxi, Hebei, Beijing, Tianjin, and western Jilin will be affected. , southern Heilongjiang and other places have blowing sand or floating dust weather.

The Central Meteorological Observatory continued to issue a blue warning for sandstorms at 06:00 on April 21.

Figure 2 National sand and dust weather forecast map (08:00 on April 21st - 08:00 on April 22nd)

There will be significant precipitation and convection in the Northeast

　　During the day from the 21st to the 22nd, due to the influence of the cyclone, there will be light rain in most of the Northeast region. Among them, there will be moderate to heavy rain in parts of central Heilongjiang and northern Jilin, and some areas will be accompanied by thunder and lightning. There will be local thunderstorms and strong winds, hail or short-term strong Strong convective weather such as precipitation.

Specific forecast for the next three days

　　From 08:00 on April 21 to 08:00 on April 22, there were light to moderate snow or sleet in parts of northern Xinjiang, southern Qinghai, and northern Tibet, with heavy snow (5-9 mm) locally.

There were light to moderate rains in parts of eastern Inner Mongolia, most of Northeast China, southern Southwest China, and most of South China. Among them, there were heavy rains (25-35 mm) in parts of central Heilongjiang and northern Jilin.

There are winds of magnitude 4 to 6 in parts of central and eastern Inner Mongolia, most of Northeast China, and northern North China, and winds of magnitude 7 to 8 in parts of northern Tibet.

Parts of central and western Inner Mongolia, southern Gansu, and northern North China have blowing sand or floating dust (see Figure 3).

Figure 3 National precipitation forecast map (08:00 on April 21st - 08:00 on April 22nd)

　　From 08:00 on April 22 to 08:00 on April 23, there were light to moderate snow or sleet in parts of northern Xinjiang, southwestern Qinghai, and central and western Tibet, with heavy snow (5-9 mm) locally.

There are moderate to heavy rains in parts of southern Jianghuai, eastern Jianghan, central and northern Jiangnan, and western Guangxi. Among them, there are heavy rains (50-60 mm) in parts of southern Anhui, northeastern Hunan, northern Jiangxi, and northeastern Guangxi.

There are winds of magnitude 5 to 6 in parts of central and eastern Inner Mongolia, southern Northeast China and other places (see Figure 4).

Figure 4 National precipitation forecast map (08:00 on April 22 - 08:00 on April 23)

　　From 08:00 on April 23 to 08:00 on April 24, there were light to moderate snow or sleet in parts of northern Xinjiang, central and southern Qinghai, and western Tibet, with heavy snow (5-9 mm) locally.

There are light to moderate rains in parts of northeastern Inner Mongolia, most of Heilongjiang, eastern Tibet, Jiangnan, most of southwest China, and southern China. Among them, there are heavy rains in parts of eastern Sichuan Basin, western Chongqing, northern Guizhou, and northern Guangdong ( 25 to 40 mm).

There are winds of magnitude 5 to 6 in parts of central and eastern Inner Mongolia, central and southern Northeast China and other places (see Figure 5).

Figure 5 National precipitation forecast map (08:00 on April 23rd - 08:00 on April 24th)

influence and attention

　　1. Strong wind and sand and dust weather in the northern region and its adverse effects on traffic and human health, etc., pay attention to the extreme wind disasters that may occur locally;

　　2. The change trend of the meteorological level of forest and grassland fire danger in Inner Mongolia, Northeast China, North China and other places;

　　3. The development trend and impact of meteorological drought in North China, Huanghuai and other places;

　　4. The adverse effects of strong winds in the Bohai Sea, Bohai Strait, Yellow Sea and other sea areas.