National baking-free map which cities have higher temperatures on June 28?

Summer is coming, and many cities are slowly warming up. The cool weather before is gone forever. You can look at the latest weather table to see which cities will have higher temperatures in July, and then try to avoid traveling.

The Central Meteorological Observatory predicts that this hot weather process will last until the 28th, mainly concentrated in the south-central part of North China to the north of Huanghuai, namely, western Shandong, northern Henan, south-central Hebei and Beijing-Tianjin area. The high temperature zone is not fixed every day, and the intensity is mostly from 35℃ to 38℃.

Reality: In China, when the local temperature of Huanghuai in North China exceeds 38℃ and the daily maximum temperature reaches or exceeds 35℃, it is generally called high temperature, and the high temperature weather process lasting for several days (more than 3 days) is called high temperature heat wave (or high temperature heat wave).

According to the monitoring data of the Central Meteorological Observatory, on June 24, the high temperature areas in China were mainly concentrated in Beijing, Tianjin, eastern and southern Hebei, northern Shandong, northern Henan, eastern Inner Mongolia, western Jilin and western Liaoning, and the scope was not too large. The highest temperature in the above areas is generally between 35℃ and 37℃. Among them, high temperature weather of 38℃ to 39℃ occurred in central and southern Tianjin and central Hebei. The highest temperature is 38.9℃, which appears at Tianjin Urban Climate Monitoring Station.

Due to the rapid rise of temperature, people obviously feel hot in summer. However, compared with the same period in history, the gap is still very large. The extreme values of the highest temperature in the same period in the history of the above areas all exceeded 40℃, basically ranging from 465 and 438+0℃ to 42℃.

Cause of formation: the radiation warming is obvious under the control of anticyclone circulation. Ma Xuekuan, chief forecaster of the Central Meteorological Observatory, said that the main reason for the high temperature process in North China and Huanghuai areas is radiation warming.

These days, North China is controlled by anticyclonic circulation, mainly sunny, and the solar short-wave radiation is obviously warming up. In addition, there are warm ridges at high altitude in North China and Huanghuai areas, accompanied by a certain degree of downdraft.

Moreover, after a whole winter, the surface conditions of the underlying surface in the north are not as humid as those in the south, and the dry environment of the surface is conducive to the temperature rise in a short time.

It stands to reason that the heat of the earth comes from the sun, and the closer it is to the sun, the higher the temperature should be. But why is there more high temperature in the north than in the south recently?

Ma Xuekuan said that in fact, the high temperatures in North China and Huanghuai sometimes began in May. There is more precipitation in the south this season, and the subtropical high has not moved northward. The intersection of cold and warm air is mainly in the south. After the onset of the monsoon, the water vapor at the edge of the subtropical high came up, which just affected the southern region. There are many rainfall processes and clouds in the southern region, so it is not easy to have high temperature weather. In the north, it is mainly sunny, with less precipitation and weak cold air. During the intermission of cold air activities, there are more sunny and hot weather.

Trend: The high temperature will last until the 28th. The Central Meteorological Observatory predicts that this hot weather process will last until the 28th, mainly concentrated in the south-central part of North China to the north of Huanghuai, namely, western Shandong, northern Henan, south-central Hebei and Beijing-Tianjin area. The daily high temperature area is not fixed, and the intensity is mostly 35℃ to 38℃.

Due to the frequent occurrence of high temperature and heat waves in recent years, the disasters caused by high temperature are becoming more and more serious. China's meteorological department has formulated high-temperature warning signals, which are divided into three levels: yellow, orange and red. High temperature yellow warning signal generally means that the maximum daily temperature will be above 35℃ for three consecutive days; High temperature orange warning signal generally means that the maximum temperature will rise above 37℃ within 24 hours; High temperature red warning signal generally means that the maximum temperature will rise above 40℃ within 24 hours.

High temperature has a certain impact on people's daily life and health and all sectors of the national economy. High temperature and heat wave make people uncomfortable, work efficiency is low, and the incidence of heatstroke, intestinal diseases, cardiovascular and cerebrovascular diseases increases; The demand for water and electricity for heatstroke prevention and cooling has soared, resulting in tight water and electricity supply and frequent failures. High temperature aggravated soil water evaporation and crop transpiration. When high temperature and little rain occur at the same time, soil moisture is seriously lost, which accelerates the development of drought and has a great impact on agricultural production. In addition, tourism, transportation, construction and other industries will also be affected to varying degrees.