When is the typhoon season in Japan? Which month in Japan has the most typhoons?
The biggest concern when traveling is natural disasters, such as earthquakes and typhoons. As we all know, Japan is a country prone to frequent typhoons. Everyone must pay more attention to typhoons before traveling and pay more attention when planning a trip.
From 2010 to 2010, the typhoon season in Japan is generally from June to October in summer and autumn, and September in autumn is the peak period of typhoons.
Because Japan has a relatively high latitude, in winter and spring, typhoons have transformed into extratropical cyclones before reaching Japan and merged into the westerly belt. Therefore, typhoons that land in a relatively concentrated manner generally appear from June to October. , the subtropical high pressure moves northward in June, so typhoons have room to move. It's early summer, and there have been many examples of typhoons affecting Japan in the past. September to October is autumn, when the subtropical high pressure weakens and typhoons tend to move northward after forming, which will also affect Japan.
September is the season for many typhoons in Japan. At this time, typhoons often hit coastal areas such as Okinawa, Kyushu, and Shikoku, and bring strong winds and rainy weather throughout Japan. The most destructive and catastrophic storm in Japanese history also occurred in September.
For example, the indoor typhoon on September 21, 1934, the tsunami typhoon on September 17, 1945 (No. 4516), the Ise Bay typhoon on September 26, 1959 (No. 5915 "Wei") "Ra"), Typhoon No. 7617 "Fran", and Typhoon Higashinomaru (No. 5421 "Mari") are all
Japanese typhoons
The source of typhoons refers to the sea areas where typhoons often occur . Global typhoons mainly occur in eight sea areas. The northern hemisphere has five sea zones: the western and eastern North Pacific, the western North Atlantic, the Bay of Bengal, and the Arabian Sea, while the southern hemisphere has three sea zones: the western South Pacific, and the western and eastern South Indian Ocean. It can be seen from the regional distribution map of the number of typhoons per year and their percentage of the total number of typhoons in the world that there are 62 typhoons in the world every year, and there are much more typhoons in the western ocean than in the eastern ocean. Among them, the northwest Pacific is the largest (accounting for more than 36%), while no typhoons have been found in the South Atlantic and southeastern Pacific. The source of typhoons in the northwest Pacific is divided into three relatively concentrated areas: the ocean east of the Philippines, the ocean near Guam, and the central South China Sea. Typhoons formed in the South China Sea have a great impact on South China.
Most typhoons occur between 5 and 20 degrees north and south latitude, especially between 10 and 20 degrees, accounting for 65% of the total. But only 13% of typhoons occur at higher latitudes beyond 20 degrees. There are very few typhoons within 5 degrees near the equator, but there are occasional typhoons. For example, the Fujian Provincial Meteorological Observatory found that between 1970 and 1971, there were three typhoons in the northwest Pacific south of 5n. According to the analysis of satellite data in the past ten years, the disturbed clouds that developed into typhoons could be found a few days ago, so the disturbances were The initial location is actually east of the previously discovered location. For example, in the North Atlantic, it was previously thought that most of the initial disturbances that develop into typhoons occur in the middle of the ocean, but based on cloud image analysis, it has been suggested that two-thirds of each year's typhoon disturbances originate on the African continent. These disturbances are generally inverted V-shaped or swirling clouds that move westward along the easterly airflow and develop into typhoons when they reach the central North Atlantic and Caribbean Sea. The initial disturbance locations of typhoons in the northwest Pacific and South China Sea are also further east than previously found.
Why typhoons like to go to Japan
The destructive power of Typhoon No. 1 is mainly caused by three factors: strong winds, heavy rain and storm surge.
1. Strong wind typhoon is a huge energy reservoir, its wind speed is above 17m/s, or even above 60m/s. According to measurements, when the wind reaches level 12, every force on the plane perpendicular to the wind direction The wind pressure per square meter can reach 230 kilograms.
2. Heavy rain typhoon is a strong precipitation system. When a typhoon makes landfall, heavy rains of 100-300 mm, or even 500-800 mm, can fall in the rainfall center in a day. Floods caused by typhoons and rains are the most dangerous disasters. Typhoon storms are of high intensity, high frequency of floods, wide range, fierce and destructive.
3. Storm surge The so-called storm surge means that when a typhoon moves towards the land, due to the strong winds and low pressure of the typhoon, seawater accumulates strongly towards the coast, the tide level rises sharply, and the water waves rush towards the coast like an avalanche. Strong typhoon storm surges can raise coastal water levels by 5-6 meters. When a storm surge encounters an astronomical spring tide, it generates high-frequency tide levels, causing tidal flooding, breaches of sea walls, destruction of houses and various building facilities, flooding of towns and farmland, and massive casualties and property losses. Storm surges can also cause coastal erosion, and seawater intrusion can cause land salinization and other disasters.