Autumn tigers are so hot that they break records in many places in the South. When will the heat end?

China Weather Network News In mid-October, many places in the south were so hot that they broke records. Guangdong, Jiangxi, and Fujian broke the latest local high temperature record, and many places in Southwest, Jiangnan, and South China broke the highest temperature record in mid-October. Today (October 20), there are still high temperatures in southern Jiangnan, South China and other places. Why is there a rare heat wave in the south during the same period? What are the temperature trends in various places? When will the heat end? Meteorological analysts from China Weather Network interpret it for you.

The temperature in the south was relatively high in mid-October, and many places were so hot that they broke records

Hot and high temperatures have recently occurred in many places in the south, and autumn tigers are showing off their power. According to Sun Qianqian, a meteorological analyst at China Weather Network, the temperature in areas south of the Yangtze River in mid-October this year was generally 2 to 4 degrees Celsius higher than the same period in normal years. It was more than 4 degrees Celsius higher in eastern Yunnan, central and southern Guizhou to southern Jiangnan, and northern South China. Some areas broke the record for the highest temperature in mid-October, including Yunnan and Guizhou. Local records for the highest temperature in October were broken.

Yesterday, the heat continued in the south. Heyuan, Huaiji and Lianzhou in Guangdong, Shangyou in Jiangxi and Jianning in Fujian all broke local high temperature records. Ningnan and Puge in Sichuan and Dongchuan and Zhaotong in Yunnan broke the local highest temperature record in mid-October. Among them, Ningnan and Dongchuan both reached 33℃ or above, making it feel hot.

Today, there are still high temperatures in parts of southern Jiangnan and southern China. Among them, southern Zhejiang, Guangdong, Fujian and other places have experienced record-breaking temperatures. As of 15:00, Fengshun and Lianzhou in Guangdong, Wuyi, Lishui, Songyang in Zhejiang, and Minqing in Fujian have all broken local records for the latest high temperature day.

Why is it so rare during the recent summer heat? Sun Qianqian said that due to the abnormally strong subtropical high pressure in the south, the air flow mainly moves downwards, suppressing the upward diffusion of heat. In addition, the stable wind in the atmosphere is small, and the heat exchange in the horizontal and vertical directions is suppressed. The heat can only continue to accumulate, leading to obvious hot weather.

The temperature in Jiangnan is turning around. The contrast between hot and cold is obvious. The heat in South China will continue.

Tomorrow, the temperature trend in some areas in the south will show a significant turning point. As the cold air moves eastward and southward, the temperature in many places in Jiangnan will drop significantly, and the heat will subside quickly. In places like Zhejiang, central Jiangxi, and southern Hunan, the maximum temperature will drop to around 25℃ tomorrow, and in some areas it will even be just over 20℃. In cities, the highest temperature in Chenzhou, Hunan will be 33℃ today and will drop to 24℃ tomorrow. Lishui, Zhejiang may have high temperatures today and drop to 24℃ tomorrow. The contrast between hot and cold is obvious, so you need to pay attention to adjust your clothing in time.

The South China area will continue to be controlled by the unusually strong subtropical high pressure in the next few days, and the heat will continue. In big cities, the highest temperatures in Guangzhou, Nanning, and Haikou will be above 30°C in the next seven days. Pay attention to heatstroke prevention and cooling.