Avoid baking the national map. Which cities have higher temperatures on June 28th?

Summer has come and many cities are getting warmer and warmer. 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 daily high temperature area is not fixed, and the intensity is mostly 35 to 38.

Reality: The local temperature of Huanghuai in North China exceeds 38℃.

In China, when the daily maximum temperature reaches or exceeds 35℃, it is generally called high temperature, and the high temperature weather process that lasts 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, China's high temperature areas were mainly concentrated in Beijing, Tianjin, eastern and southern Hebei, northern Shandong, northern Henan, eastern Inner Mongolia, western Jilin, western Liaoning and other places, and the scope was not too large. The highest temperature in the above areas is generally between 35 and 37. Among them, there are 38 ~ 39 high temperature weather in central and southern Tianjin and central Hebei. The highest temperature was 38.9, which appeared at Tianjin Urban Climate Monitoring Station.

With the temperature soaring rapidly, the public obviously felt the heat 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 between 4 1-42.

Cause: 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.

In recent days, North China has been controlled by anticyclonic circulation, mainly sunny, and solar short-wave radiation has obviously warmed up. In addition, there are warm ridges in North China and Huanghuai areas, accompanied by a certain degree of downward flow.

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 surface environment is relatively dry, which 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 Xue said that in fact, the high temperature in North China and Huanghuai sometimes started in May. There is a lot of 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 was transported up, which just affected the southern region. There are many rainfall processes and large clouds in the south, so it is not easy to have high temperature weather. The weather in the north is mostly sunny, with less precipitation, and the cold air force is getting weaker and weaker. During the interval of cold air activity, 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 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. The yellow warning signal generally means that the daily maximum temperature will be above 35 for three consecutive days; The orange warning signal generally means that the maximum temperature will rise above 37 within 24 hours; 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. Heat wave makes people feel uncomfortable and inefficient, and the incidence of heatstroke, intestinal diseases and cardiovascular and cerebrovascular diseases increases.