Typhoon Haikui makes landfall for the third time! Why are autumn typhoons so powerful? How to deal with them scientifically?

Monitoring by the Central Meteorological Observatory shows that the center of this year's No. 11 typhoon "Haikui" made landfall on the coast of Dongshan County, Fujian Province around 5:20 today (5th), and made landfall again on the coast of Raoping County, Guangdong Province around 6:45. The maximum wind speed near the center was 8 (18 meters/second) when it landed.

This is the third time that Typhoon Haikui has landed in my country. Previously, Haikui made its first landfall on the coast of Taitung City, Taiwan Province on the 3rd.

Typhoon rains continue in Fujian, Guangdong and other places

Local precipitation may be extreme

With the typhoon "Haikui" landing on the coast of southern China, coupled with the influence of the southwest monsoon water vapor transport , Fujian and Guangdong will become the "main battlefield" of heavy rainfall in the next two days , and the heavy rain warning is still in effect. In the next few days, Fujian and Guangdong and other places will continue to rain.

Image source: China National Meteorological Administration

The Guangdong Provincial Meteorological Observatory predicts that "Anemone" will move westward at a speed of 10 to 15 kilometers per hour and its intensity will gradually weaken.

At present, according to the latest report from the Guangdong Provincial Flood Control, Drought Relief and Typhoon Prevention Headquarters, the railway department has suspended 515 trains, 23 sea passenger routes east of Huizhou have been suspended, and classes in Shantou and Chaozhou have been suspended.

The Ministry of Water Resources and the China Meteorological Administration jointly issued a red meteorological warning for flash flood disasters at 18:00 on the 4th. It is expected that from 20:00 on the 4th to 20:00 on the 5th, there is a high possibility of flash flood disasters in parts of eastern and southern Fujian (orange warning), among which there is a high possibility of flash flood disasters in local areas of southern Fujian (red warning).

Recent typhoon "groups"

Why are autumn typhoons so crazy?

Since the beginning of autumn, typhoons seem to have become "frequent visitors" and have frequently "visited". It feels to us that they are often "strong" or "super strong", making landfall from time to time, not only "clustering" but sometimes "forming groups", showing their arrogance. So, what exactly are autumn typhoons? Why are they so crazy?

There is no strict meteorological definition for autumn typhoons. Typhoons that form from June to August are generally called summer typhoons, while those that form from September to November are called autumn typhoons .

We know that the energy source for the growth of typhoons is mainly the heat in the ocean. During the transition period from summer to autumn, the sun moves from north to south, which causes the sea temperature to be warmer and more and more heat is accumulated on the sea surface. With sufficient energy supply, typhoons will grow stronger.

After entering autumn, the subtropical high pressure begins to retreat eastward and move southward. As the main force affecting the typhoon path "declines", it gradually forms a "balanced" state with other system forces. In addition, the complex terrain of the South China Sea often causes typhoons to "take unusual paths" and have unpredictable paths.

In addition, autumn typhoons are often easily combined with cold air moving south from the north to form a typhoon trough, which brings extremely strong winds and rains to the northern regions. The affected area is larger and the disaster losses are more serious.

At 8:15 a.m. on September 1, as shown in the true color image of the Fengyun-4B geostationary meteorological satellite, "Sura", "Anemone" and "Hongyan" were distributed in an east-west belt.

Image source: China Meteorological Administration

How to deal with it scientifically? Find out with one picture!

Image source: National Emergency Broadcasting

Please pay attention to safety and take scientific precautions!

Comprehensive sources: Xinhuanet, China Meteorological Administration, China Meteorological Administration, National Emergency Broadcasting, etc.