The high temperature in the south is endless?IntersectionIt is expected to be hot until the end of the month!

Why is it so hot? Intersection

Since July, with the influence of the Western Pacific subtly high pressure, under the influence of factors such as the sun and sunkenness and temperature increase, a large range of high temperature weather appears in the south. value.

01

High temperature duration long

Extremely significant

From July 5th to 17th, the maximum temperatures of the highest temperature in eastern Sichuan, southwestern Chongqing and north, northeast Yunnan, southern Shaanxi, northwestern Hubei, southern Jiangsu, Shanghai, Zhejiang and other places exceeded 40 ° C, and Yunnan Yanjin Land reached 44 ° C Essence Yunnan, Guizhou, Sichuan, Chongqing, Qinghai, Gansu, Ningxia, Shaanxi, Zhejiang, Anhui, Jiangsu, Shanghai, and Tibet have a total of 154 national meteorological observation stations reaching or breaking through July pole value, 61 national stations reached or broke through historical pole value Essence On July 13th, the highest temperature (40.9 ° C) in Xujiahui, Shanghai, tied the highest record since the meteorological record (since 1873).

There are 5-9 days of high temperature daily high temperatures in central south of Shaanxi, Sichuan Basin and Jianghuai, Jianghan, Jiangnan and other places. Essence

02

How does high temperature weather develop in the future?

From July 18th to 20th, the overall intensity of high temperature in the southern region weakened and scope.

However, with the strengthening of the deputy Gao Xixian, the high -temperature weather in the south will develop again from the 21st, and the subsequent high -pressure will be opened with Iran. This means that the deputy high is very strong. This time, the high temperature weather process will not be underestimated!

It is estimated that from July 21st to the end of July, Sichuan Basin, Jianghan, Jianghuai, Jiangnan, South China and Xinjiang Southern Xinjiang Basin, western Inner Mongolia and other places will have a large range of high temperature weather above 35 ° C. The maximum temperature in western Inner Mongolia and other places will exceed 40 ° C. There will be interrupted high temperature weather in central and southern North China, Huanghuai and Shaanxi.

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03

Subjective high pressure and Iran high pressure

Why is it "holding hands"?

In fact, this situation is not uncommon in meteorological, but if you want to make the vice -high and Iran's high pressure "holding hands", you must also pay attention to the time and place. It is obviously that the reinforcement of the vice -high side is obviously not good. This requires that Iran's high pressure is relatively strong.

In addition to the reasons for their own, cold air and monsoon grooves are also important influencing factors. Only when the cold air activity and monsoon grooves are relatively weak can they can create a "hand in hand" environment for deputy high and Iran's high pressure.

Internal and surrounding weather

Inside the deputy high is generally sunny, high temperature, young clouds, and rainy weather, but the territory will also occur due to the rising of the gas ball. This kind of rainfall is strong, the duration is short, and the cooling effect is not obvious.

The deputy high will put water vapor on the sea ashore. When a low -pressure groove or low vortex is encountered on the north or northwest side of the vice -high, a large area of ​​rainfall will appear.

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● Information source | Central Meteorological Observatory, Climate Center

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