Seasonal distribution of typhoon in northeast of China

The rainfall in Northesat China affected by typhoons is the biggest. For example, the "308" rainstorm in west rigion of Liaoning province is affected by typhoons and cold front, with the 24 hour rainfall of 1000mm, which is the biggest rainstorm of this region so far. According to the meteorological department statistics, from 1957 to 1987 is 31 years, the rainstorm above 500mm affected by typhoon in Northeast China had happened for 5 times, of which 3 times happened in the HeiGou, Kuandian county.

The average frequency of rainstorm affected by typhoons is 2 times than that in many years, and the most frequency is 5 times. Only few years are not influenced by typhoons.

Typhoons affect the Northeast area mainly in July, August and September. Although the typhoon is concentrated in East China and the coastal areas of North China, a great deal of typhoons directly point to the south of eastnorth area, the southern section of Changbai Mountain, but most in Liaoning province.

There are two typhoons track in August. One piece points to Guangdong and Guangxi area and the downstream area of the Yangtze River. After weakening on land as a low pressure, in the late period, it often moves northward to the Northeast and influnces the north of Eastsouth. It is not inferior of before weakening typhoon about the rainfall. Another one directly point to the eastern part of Jilin and HeiLongjiang province.

In September, typhoons swept across the east coast of China and turned to Sea of Japan, then some typhoons also go through the northeast region.

In summary, typhoon rainstorms concentrate in July and August, especially in August. Jilin province counted the days of typhoon rainstorm which influenced this province.

The further analysis found that typhoons mainly concentrate from the forth season in July to the second season in September, the most times in the sixth season in July, the secondly times in the first and sixth season in August. In addition, the seasonal distribution of typhoons in Northeast China is basically the same as that of Jilin province.

The information is provided by Disaster Risk Reduction Knowledge Service.