What are the common meteorological disasters in beginning of autumn?

On August 7th or 8th every year, beginning of autumn is considered as the time when the sun reaches 135. Beginning of autumn: One of the 24 solar terms in the China lunar calendar, which falls on August 7th, 8th or 9th. In China, beginning of autumn is the beginning of autumn. Beginning of autumn season, when the sky is high and the clouds are light and colorful, is a good season for tourism. At the same time, beginning of autumn season is also a season of frequent meteorological disasters. The following Bian Xiao Weather Network will list the common meteorological disasters in early autumn for you.

Disaster 1: rainstorm

China is a rainy country. Except for some provinces in the northwest, it is almost always heavy rain. From June to July, persistent rainstorms often occur in the middle and lower reaches of the Yangtze River, with long duration, wide range and large amount of rainstorms. July to August, that is, autumn, is the main rainstorm season in northern provinces, and the rainstorm intensity is very high. From August to 65438+ 10, the rain belt gradually withdrew southward. After summer and autumn, the typhoon rainstorm in the East China Sea and the South China Sea is very active, and the point rainfall of typhoon rainstorm is often very large.

China has a monsoon climate. From late spring to midsummer, the cold air in the north fought and retreated. Cold and warm air frequently meet, forming a series of heavy rains. The position of the main rain belt in Chinese mainland also moves from south to north with the seasons. South China (Guangdong, Guangxi, Fujian and Taiwan Province) is the region with the most rainstorm in China. April to September is the rainy season. The second half of June to the first half of July is usually the rainy season in the Yangtze River basin. In late July, the rain belt moved to the north of the Yellow River. After September, the winter wind was established and the rain belt retreated south. Affected by the summer monsoon, the number of rainstorm days and rainfall distribution in China decrease from southeast to northwest inland, with mountains more than plains. Moreover, the southeast coastal islands and coastal areas have the largest number of rainstorm days, and the farther northwest, the less. In the northwest plateau, there is less than one day of heavy rain on average every year. Mountain slopes in the southeast or east, such as Taihang Mountain, Dabie Mountain, Nanling Mountain and Wuyishan Mountain, are the centers of rainstorm days in these areas.

Disaster 2: Typhoon

Typhoon According to the relevant data of typhoon occurrence in recent years, the laws and characteristics of typhoon occurrence mainly have the following points: First, seasonality. Typhoons (including tropical storms) usually occur between summer and autumn, with the earliest in early May and the latest in 1 1 month. Second, it is difficult to accurately predict the landing position of the typhoon center. The wind direction of typhoon changes from time to time, which is often unexpected, and the landing position of typhoon center is often different from the forecast. Third, the typhoon is rotating. When landing, the wind direction is generally north first and then south. Fourth, the damage is serious. It is very destructive to unstable buildings, overhead lines, trees, ships at sea, cage fish farming and coastal crops. Fifth, strong typhoons are often accompanied by heavy rains, tides and tsunamis. Sixth, when a strong typhoon occurs, manpower is irresistible and it is easy to cause casualties.

China numbered the tropical depressions that entered the west of l50 degrees east longitude and the north of l0 degrees north latitude, and the maximum wind force near the center was more than 8, which was arranged in the order of annual occurrence. This is the "Typhoon X this year (tropical storm, strong tropical storm)" that we heard or saw on radio and television.