These parts of the country returned to winter overnight

2022-06-02 0 By

In recent days, spring has been in the air in many places, and some parts of southern China have seen “high temperatures” of 30 degrees Celsius, reported.However, the down jacket is not closed!From now on, the Middle East will see a large area of “seasonal change” type of cooling, the significantly higher temperature in the south will drop significantly, mainly rain accompanied by strong convection weather, north of the rain and snow mix, or “return to winter”.File photo: Citizens travel through snow in Shenyang.As cold air is advancing from north to south, the weather stage will undergo a major change, with rain, snow, temperature drop and strong convection all coming together.The National Meteorological Center issued this year’s first blue alert for rainstorms and a blue alert for severe convection early Monday.In the evening, the central Meteorological Center in addition to continuing to issue heavy rain, severe convection warnings, also issued a blue alert for snow.Rainstorm warning blue shows that is expected to 17, 20, most of southern henan, jiangsu, zhejiang and Shanghai north central and other places have a heavy rain, among them, the parts of southeast henan, central and southern jiangsu and other places have heavy rains, south anhui local torrential rain, the above parts accompanied with heavy rain, local wind or hail and strong convective weather thunderstorms.According to the blue alert for severe convection, some parts of central and southern Anhui, central Jiangsu and southern Sichuan will have strong thunderstorms or hail with force of 8 to 10 until 20 o ‘clock on Sunday.There will be short-term heavy precipitation in parts of southern Henan, south-central Jiangsu, western Zhejiang, northern and western Fujian, and southeastern Sichuan Basin.It is predicted that the severe convection will mainly affect the night of 16th.The blue alert for heavy snowstorm said heavy snow will fall in parts of central and southern Inner Mongolia, northern Shanxi, northwestern Hebei, and mountainous areas northwest of Beijing from 20 a.m. Saturday to 20 a.m.Forecast map of heavy rainfall area in China.(20:00 On March 16-20:00 on March 17) where is the temperature dropping the most?In the north, the temperature drop started on The 16th and reached a recent low around the 18th. In southern Hebei, central and western Henan, western and northern Shandong, the temperature drop could reach more than 12℃.Provincial capital cities, Taiyuan, Zhengzhou is the national temperature “skydiving” champion.On the 15th, the highest temperature in Taiyuan was 25℃, zhengzhou 27℃, warm as early summer, to the 17th, the highest temperature in the two places was only 4℃, 6℃ respectively, the cumulative drop in temperature was 21℃, is the most drastic drop in the capital city, like two seasons overnight.Jinan and Shijiazhuang are slightly lower, but the temperature drop is also about 15℃, and Beijing and Tianjin have dropped about 13℃.After the cooling, the highest temperature in these areas was in single digits.In particular, Tianjin, Beijing and Jinan will see light snow or sleet on May 17 and 18.For the south, the temperature jump starts later.”At present, most of south China seems to be enjoying summer. The highest temperature in The Southern region of The Yangtze River was close to 30 degrees Celsius on The 16th, and the temperature is as hot as In June. However, when the cooling starts on the 17th, the temperature will drop sharply.China Weather network meteorological analyst Zhang Juan introduced.In the provincial capital cities, Hefei, Wuhan, Nanjing 16 maximum temperature of 29℃, 27℃, 30℃, but to 17 maximum temperature are only 10℃, overnight temperature directly “collapse”.National temperature “skydiving” south group.Is it an “inverted cold”?However, MAO Liuxi, chief meteorologist of the National Meteorological Center, said the cooling process did not meet the standard of an “inverted cold”.According to the introduction, “inverted cold” in the meteorological has a clear standard.According to meteorological Indicators of inverted cold, “inverted cold” mainly refers to the phenomenon of “warm in the early stage and cold in the late stage” in spring (March to May) every year, and the temperature in the late stage is significantly lower than normal years.”The word ‘inverted cold’ is reflected in the warm before and cold after.Generally, it occurs in April to May in the north and March to May in the south.”MAO Liuxi said.Looking ahead, this cold air is expected to be followed by another cold air in the second half of the week, and the pressure on the temperature in the south will be more obvious.Affected by the current cold air, China’s early warm temperature pattern has gradually reversed, especially in northern China, the temperature took the lead in “bottoming out”.Temperatures along the Yangtze River will also hit bottom around May 20 or 21 as the latter cold front moves farther south.It is expected that the cold air will be more active in the latter part of March, and the average temperature in most areas will be 1-2 ℃ lower than the same period of the previous year except the Tibetan Plateau.Source: