Cover Visual | Why is the strongest typhoon "Plum Blossom" this year, why is the autumn typhoon that will be so strong?

At 20:30 on September 14th, the typhoon "Plum Blossom" landed for the first time on the coast of Putuo, Zhoushan, Zhejiang. At the time of landing, the intensity was a strong typhoon, becoming the strongest typhoon to land in my country since this year. Around 0:30 on the 15th, "Plum Blossoms" landed again on the coast of Fengxian in Shanghai. It will bring continuous strong wind and heavy rain to East China and Northeast China, affecting at least two to three days. In addition, it is expected that the "Plum Blossom" will also land on the southern coast of the southern part of the Shandong Peninsula for the third time on the 15th.

Since September, the autumn typhoon has joined the group. At present, three dances on the Western Pacific Ocean, in addition to "plum blossoms", are also Typhoon No. 13 "Miao Bai" and Typhoon No. 14 "Nanma Du".

What is autumn typhoon

In terms of meteorology, typhoons generated from June to August are called summer typhoons, and typhoons generated from September to November are called autumn platform wind. From 1949 to 2019, we can see that in 71, 824 typhoons and 809 typhoons were generated in summer and autumn, with an average of 11.6 and 11.4 per year.

Autumn typhoon landing point is south

Compared to Typhoon Summer, Typhoon Qiu's landing land in my country is obviously south. From 1949 to 2021, Meteorological Big Data shows that the most common landing land in autumn is Guangdong, followed by Taiwan, Fujian and Hainan, and some typhoons have landed in Zhejiang, Guangxi, Hong Kong and Shanghai.

Most of the "ruthless characters" of typhoon autumn typhoon

According to statistics, in the typhoon that landed in our country in September, the proportion of strong typhoons and the above level accounted for 26.2%, exceeding other months. And strong typhoons appear in autumn, which is related to the warm temperature of the seawater. Starting from the spring equinox solar terms, the direct sunlight point moved from the equator to the north, heating the tropical ocean in the northern hemisphere, and the heat of the seawater continued to accumulate. Usually, the sea temperature in August to September reached the highest. High sea temperature was conducive to the generation of typhoons and energy enhancement. At this time, most of the typhoons are generated in the Pacific Ocean northwest, far from the land, and have sufficient development space and time. Often the history of life is generally long, which is conducive to the development of typhoons.

Autumn typhoon destructive power

Due to the increasing cold air in autumn, typhoons are more likely to encounter cold air. "Autumn Typhoon+Cold Air" often stimulates violent precipitation, leading to greater disasters.

Taking Typhoon Molanti No. 14 in 2016 as an example, after landing, 11 provinces and cities including Fujian, Guangdong, Jiangxi, Zhejiang, Shanghai, and Jiangsu caused a disaster of 3.755 million people. 100 million yuan.

At present, the strong typhoon "Plum Blossom" that has landed in my country has released the highest -level typhoon red warning. Meteorological experts remind that the typhoon "plum blossoms" have strong intensity, strong wind duration, large rainfall, and high risk of disaster. The adverse effects of fisheries and offshore breeding industries and epidemic prevention and control.

- END -