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Why is the "strongest" rainfall coming so frequently recently? Experts reveal secrets

via:驱动之家     time:2021/5/16 0:18:23     readed:225

Recently, many places in China have suffered from extreme weather such as thunderstorm and gale.

At about 19 o'clock yesterday, an Ef3 tornado appeared in Shengze Town, Wujiang District, Suzhou City, with a maximum wind force of 17 in the center, about 2km long and 80-100m wide.

At 20:39 yesterday, a tornado broke out in Wuhan, with a wind speed of 23.9 M / s. some houses were damaged, a large number of trees were broken, and many people were injured.

From 20 o'clock yesterday to 12 o'clock today, more than 130000 lightning flashes occurred over Hubei

Today, the Central Meteorological Observatory continued to issue the blue rainstorm warning and upgraded the Yellow severe convective weather warning.Today and tomorrow, rainfall in central and eastern China will enter the strongest period of this round.

Today and tomorrow, China's rainfall range is still wide, and the rain is strong in many places in the south. The Central Meteorological Observatory continues to issue the blue rainstorm warning. It is expected that there will be heavy rain in some areas of Shanxi, Henan, Chongqing, Hubei, Anhui, Jiangsu, Shanghai, Zhejiang, Jiangxi, Hunan, Guizhou and Guangxi. Among them, there are heavy rain in the northeast of Hunan, Southeast of Anhui and south of Jiangsu.

At the same time, heavy convective weather will still occur frequently. At 10 a.m., the Central Meteorological Observatory upgraded and issued a strong convective weather yellow warning. It is estimated that there will be thunderstorms of magnitude 8-10 in some areas of central and southern Anhui, central and southern Jiangsu, Shanghai, central and Eastern Hubei, central and Northern Hunan, northern Jiangxi, Northern Zhejiang, central and Eastern Guizhou, northeastern Guangxi, and northwestern Guangdong, with local thunderstorms of magnitude 11-12. There will be local hail and short-term heavy rainfall in the above areas. The Meteorological Department reminded that the accumulated rainfall in some areas is large, so it is necessary to prevent the geological disasters such as waterlogging, mountain torrents, and floods of small and medium rivers.

So why are the recent severe convective weather so frequent? Zhang Tao, chief forecaster of the Central Meteorological Observatory, said,This round of severe convective weather in the south is mainly due to the enhancement of warm and humid air flow in the southwest, which brings abundant water vapor and heat, and forms the unstable conditions of upper cold and lower warm atmosphere, which is conducive to the occurrence of severe convective weather. With the cold air moving southward and the trough moving eastward, it is easy to trigger severe convective weather.

He also said that this year's severe convective weather is relatively abnormal, which is manifested in the fact that the severe convective weather from February to March, including the first half of April, is significantly less than that of the normal year, but after the middle of April, the severe convective weather is significantly higher, and the extreme is also significantly enhanced.



Reprint please indicate the source: fast technology


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