At the end of August, the protagonists on the weather stage in East Asia are two major storms - the large cyclone that caused wind and rain in Shandong, North China two days ago has now arrived in Anhui. The huge cloud system covers most of the south. From the satellite cloud map

html At the end of August, the protagonists on the weather stage in East Asia are two major storms - the large cyclone that caused wind and rain in Shandong, North China in the past two days has now arrived in Anhui. The huge cloud system covers most of the south. From the satellite cloud map, it looks like a typhoon has penetrated deeply. What it looks like after being inland. At sea, the typhoon season seems to be reaching its climax again and again. Following Typhoon Maria and Typhoon Ambi, Super Typhoon Shanshan appears again and quickly becomes the focus of everyone's attention.

1. Super Typhoon Shanshan will make landfall repeatedly

On the afternoon of August 28, the center of Typhoon Shanshan was located offshore south of Kyushu Island, Japan. In the past day and a half, its moving speed could be described as "turtle speed", and even appeared at one time Only slightly faster than walking speed. This slow-moving typhoon is sometimes more troublesome than a fast-moving typhoon because the wind and rain it brings lasts longer and covers a wider area.

Shanshan’s slow movement has a meteorological reason behind it. First, we must talk about an old and familiar friend - the subtropical high. The subtropical high pressure is like an invisible "rudder". Its strength and location directly affect the path of the typhoon. Shanshan slowly moved northward under the guidance of the subtropical high pressure. During this process, Shanshan was just above the warm Kuroshio current. The Kuroshio Current is a warm ocean current that extends from the southeastern coast of my country to Japan. It provides sufficient energy supply to typhoons and maintains their intensity. This is why even though Shanshan is moving very slowly, it still maintains the intensity of a super typhoon.

The satellite cloud image on the afternoon of August 28 showed that Shanshan still maintained a fairly clear eye, indicating that its structure was stable and the central wind force reached level 16. The longer this high-intensity typhoon stays, the greater the threat it poses to coastal areas. Currently, the Central Meteorological Observatory predicts that Shanshan will turn offshore of Kyushu Island, and will most likely land on the west coast of Kyushu Island on August 29, and then travel northeast across most of the Japanese archipelago. The forecast means Japan will face strong winds and heavy rains from Kyushu to the Kanto region.

2. Super heavy rains in Japan are confirmed. The destructive power of typhoon

is not only reflected in the strong winds, but also in the precipitation it brings. Supercomputer predictions show that Shanshan will bring widespread extreme rainstorms to western Japan. The black color in some areas means that the cumulative rainfall from August 28 to September 2 may exceed 500 mm, and the local maximum cumulative rainfall may exceed 700 mm. In the face of such rainfall, secondary disasters such as floods and landslides may occur. The risk is extremely high. In particular, Shanshan's path may repeatedly stagnate near Japan, which will greatly extend the duration of precipitation and bring greater challenges to rescue and disaster prevention efforts.

Under the influence of Typhoon Shanshan, meteorological observation stations in some areas of Japan have begun to record relatively extreme precipitation. Analytical data from the Japan Meteorological Agency shows that under the influence of Typhoon Shanshan, some places in Japan’s Honshu Island have experienced record rainfall. The daily rainfall record for August was set, and some stations even broke the record for the largest rainfall in the history of observation.

The threat of typhoons is not only reflected in wind and rain, but will also have a serious impact on transportation, electricity, agriculture and other fields. Typhoon Shanshan may continue to linger over Japan in the next few days, and its slow-moving nature determines that it will not leave easily. While supercomputer predictions suggest Shanshan may gradually weaken as it passes over Japan, that doesn't mean its impact will disappear quickly. On the contrary, due to long-term stagnation, the precipitation brought by Shanshan may exceed the sum of multiple typhoons, which will be a severe test for the drainage systems of coastal cities.

In our country, although Typhoon Shanshan currently has little direct impact, we cannot take it lightly. The southeastern coastal areas of my country are often hit by typhoons, and the subtropical high pressure and the Kuroshio Current, the "good friends" of typhoons, are also lingering around us. This year's typhoon season is not over yet, and my country may still see typhoons landfall in September and October. As climate change intensifies, the intensity and frequency of typhoons may increase in the future.