There are heavy rainfall and strong convection in southern Jiangnan and central and northern South China.

　　China News Service, April 5. According to the website of the Central Meteorological Observatory, heavy rainfall and strong convective weather occurred in Fujian, Jiangxi, Hunan, Guangdong and other places yesterday. It is expected that there will still be persistent heavy rainfall in southwestern Fujian, central and northern Guangdong, and northeastern Guangxi in the next three days. Pay attention to the superposition effect and the possible urban flooding, flash floods, geological disasters, etc. caused by the superposition effect and short-term heavy rainfall.

There are heavy rainfall and strong convection in southern Jiangnan and central and northern South China.

　　From the 5th to the 7th, there were moderate to heavy rains in southern Jiangnan, central and northern South China, southeastern Tibet, central and southern Sichuan Basin, southern Chongqing, and southeastern Guizhou. There were heavy rains in parts of southern Jiangnan, central and northern South China, and other places. There will be heavy rainstorms, accompanied by strong convective weather such as short-term heavy precipitation, thunderstorms, strong winds or hail; in addition, the western Xinjiang mountains, the Ili Valley, the southern Xinjiang basin and the Tianshan area, most of Tibet, Gansu, most of Qinghai, and western Sichuan There were light to moderate snow or sleet in some areas on the plateau, and heavy to heavy snowfall in areas along the Tianshan Mountains in Xinjiang, southeastern Tibet, and northwest of the Western Sichuan Plateau.

　　It is expected that from 08:00 on April 5 to 08:00 on April 6, there will be heavy to heavy rains in parts of southeastern Hunan, southern Jiangxi, central and southern Fujian, northeastern Guangxi, and central and northern Guangdong. Among them, southern Jiangxi, northeastern Guangxi, etc. There were heavy rainstorms (100-210 mm) in some areas of central China and northern Guangdong (see Figure 1). Some areas in southern Jiangxi, eastern Guangxi, central and western Guangdong and northern Guangdong will have thunderstorm winds or hail of level 8 or above; among them, there will be thunderstorm winds or hail of level 10 or above in parts of northeastern Guangxi, central and western Guangdong and northern Guangdong. ; In addition, some areas in southern Hunan, southern Jiangxi, western Fujian, northwestern and central Guizhou, eastern Guangxi, central and western and northern Guangdong will have short-term heavy precipitation weather with hourly rainfall greater than 20 mm; among them, eastern Guangxi and The local maximum hourly rainfall in central and western Guangdong and other places is more than 50 mm, and in some places it can reach more than 80 mm. It is expected that the main impact period of strong convection will be from daytime to night today (see Figure 2). The Central Meteorological Observatory will continue to issue yellow rainstorm warnings and severe convective weather blue warnings at 06:00 on April 5.

Figure 1 Forecast map of heavy rainfall areas across the country (08:00 on April 5 to 08:00 on April 6)

Figure 2 National thunderstorm, wind or hail warning (08:00 on April 5 to 08:00 on April 6)

Domestic detailed forecast for the next three days

　　From 08:00 on April 5 to 08:00 on April 6, northeastern Inner Mongolia, northwest Heilongjiang, western Xinjiang mountainous areas and southern Xinjiang basin and areas along the Tianshan Mountains, western and southeastern Tibet, southeastern Qinghai, Hexi and southern Gansu, western Sichuan Plateau, There was light snow or sleet in some areas in northwest Yunnan and other places. Among them, there was moderate to heavy snow (5-9 mm) in some areas along the Tianshan Mountains in Xinjiang and southeastern Tibet. There will be moderate to heavy rain in some areas in southeastern Tibet, southern Sichuan Basin, southern Chongqing, southern Jiangnan, and most of South China. Among them, some areas in southern Hunan, southern Jiangxi, central and southern Fujian, northeastern Guangxi, and central and northern Guangdong will have moderate to heavy rain. Heavy rain or heavy rain (100~210 mm). There are level 4 to 5 winds in some areas of southern Tibet, central and eastern Inner Mongolia, Liaodong Peninsula, Shandong Peninsula, and northern Zhejiang (see Figure 3).

Figure 3 National precipitation forecast map (08:00 on April 5 - 08:00 on April 6)

　　From 08:00 on April 6 to 08:00 on April 7, there will be light snow or sleet in some areas in northeastern Inner Mongolia, northwest Heilongjiang, the mountainous areas of western Xinjiang and along the Tianshan Mountains, central and eastern Tibet, the central part of Northwest China, and the northern part of the Western Sichuan Plateau. Among them, moderate to heavy snowfall occurred in some areas along the Tianshan Mountains in Xinjiang, southeastern Tibet, northeastern Qinghai, and the northern part of the Western Sichuan Plateau, and there were local heavy snowfalls (10-15 mm) in southeastern Tibet and other places. There are moderate to heavy rains in some areas in southeastern Tibet, central Sichuan Basin, western Chongqing, southern Jiangnan, and central and northern South China. Among them, some areas in northwest Fujian, northeastern Guangxi, and northwestern Guangxi have heavy rains or heavy rains (100~ 110 mm). There are winds of magnitude 4 to 6 in some areas in central Inner Mongolia and northeastern Heilongjiang (see Figure 4).

Figure 4 National precipitation forecast map (08:00 on April 6 to 08:00 on April 7)

　　From 08:00 on April 7 to 08:00 on April 8, there will be light to moderate snow or rain in some areas along the mountains in western Xinjiang, the southern Xinjiang basin and the Ili Valley, northern and southeastern Tibet, most of Qinghai, Hexi in Gansu, and the western Sichuan Plateau. Mixed snow, with heavy to heavy snowfall (10-18 mm) in some areas in southeastern Tibet and northwest Sichuan Plateau. Moderate to heavy rains occurred in parts of southeastern Tibet, southern Jiangnan, southeastern Guizhou, and northern South China. Among them, heavy rains (50-70 mm) occurred in parts of southern Jiangxi, southwestern Fujian, and northeastern Guangdong. There are level 4 to 5 winds in some areas in central Inner Mongolia and southwestern Heilongjiang (see Figure 5).

Figure 5 National precipitation forecast map (08:00 on April 7 to 08:00 on April 8)