Why has the recent heavy rainfall continued in the south and the high temperature in the north not subsided? Huanghuai | Forecaster | High temperature weather

Recently, high temperatures have continued to develop in the north, and heavy rainfall has continued in the south. So why is there continuous heavy rainfall in the south and high temperatures in the north? How should the public respond?

According to the Central Meteorological Observatory, since June 9, high temperature weather has occurred in the southeastern part of North China, the Huanghuai area and other areas. A total of 42 national meteorological stations in Hebei, Shandong, Tianjin and other places have reached the extreme high temperature threshold, and the daily maximum temperature at 86 national meteorological stations has exceeded 40°C. The high temperature has affected an area of ​​about 500,000 square kilometers, affecting a population of about 290 million people.

According to Fu Jiaolan, chief forecaster of the Central Meteorological Observatory, North China and the Huanghuai region have been under the control of a high-pressure ridge weather system recently, with less cloud cover in the sky. Clear sky radiation and downward warming have jointly promoted the development of high temperature weather. In fact, not only has the temperature risen significantly recently, but this summer, high temperature weather in my country appeared relatively early, and overall, high temperature weather processes will also occur more frequently.

Regarding the high temperature weather in North China, Huanghuai and other places in my country, some netizens are worried about whether such high temperature weather will become normal. Zheng Zhihai, chief forecaster of the National Climate Center, introduced that under the background of global warming, my country's high temperature generally presents a feature of early first-start date, more high temperature days and stronger intensity. It is expected that the temperature in most parts of my country this summer will be higher than the same period of previous years, and the number of high temperature days will also be relatively high, especially in North China, East China, Central China, South China and Xinjiang. The number of high temperature days is higher than the same period of previous years. This year is a year of El Niño decay. The subtropical high pressure in the western Pacific is very strong. The places it controls are often prone to persistent high temperature weather, so this year's high temperature may be more serious. However, its high temperature will have obvious stage characteristics, that is, in June, it is mainly high temperature in North China and Huanghuai. After midsummer, the high temperature will turn more to the south.

Compared with the high temperatures in the north, heavy rainfall is still frequent in the south. From June 13 to 15, a new round of heavy rainfall will affect the south.

Regarding this round of heavy rainfall in many places in southern China, Yang Shunan, chief forecaster of the Central Meteorological Observatory, introduced that the heaviest period of this round of rainfall occurred from the night of the 13th to the day of the 15th, with the cumulative precipitation reaching 40 mm to 80 mm, and exceeding 100 mm in some areas. Among them, the local cumulative precipitation in central and northern Guangxi and at the junction of Zhejiang, Fujian and Jiangxi provinces reached 250 mm, and even exceeded 400 mm.

Yang Shunan introduced that from June 16 to 18, there will be heavy to torrential rain, local heavy rainstorms, and local thunderstorms and strong winds in Jiangnan, western South China, Guizhou, and southern Sichuan.

From the 19th to the 21st, the entire eastern section of the rain belt will move northward to the Jianghuai area to the middle and lower reaches of the Yangtze River. There will be moderate to heavy rain in Jianghuai, northern Jiangnan, western South China, eastern Southwest China and other areas, with local heavy rain or torrential rain.

At the same time, the Huanghuaihai and northern regions will continue to experience high temperatures and little rainfall for some time to come, and the drought may further develop.

How to deal with high temperature and heavy rainfall?

In view of the recent frequent occurrence of high temperature weather, experts suggest that relevant departments should do a good job in heatstroke prevention and health and epidemic prevention, especially for elderly people living alone, patients with long-term chronic diseases, low-income families with insufficient cooling facilities and outdoor workers. At the same time, scientific scheduling should be strengthened to ensure electricity for life and production, and ensure drinking water for people and animals and water for production.

In addition, regarding the new round of heavy rains in the south, the rainfall area overlaps greatly with the previous period. Experts remind people to be vigilant against secondary disasters that may be caused by continued rainfall.