Abstract:Based on the daily precipitation data and hourly precipitation data of three regional automatic stations in Kedu, Tangbian and Dongjia near FAST from 2010 to 2020, the characteristics, intensity, monthly variation and hourly distribution of rainstorm around FAST were analyzed by statistical method.The results showed that between 2010 and 2020, there were 43 to 47 heavy rains at various stations around FAST, most of which were caused by convective or mixed precipitation. The duration of heavy rains was generally short, and most of them were 1 to 2 hours.Heavy rains mainly occur in summer and autumn. The most prone month is June. The most prone precipitation is 50~100 mm. Heavy rains are most likely to occur from night to early morning (22∶00-06∶00).There were two heavy rains 5~9 times in each station in a week, 3 heavy rains 4~6 times in a month, and the shortest time for 3 consecutive heavy rains was 11~13 days.In the past 11 years, there have been 5 to 7 heavy rainstorms at various stations around FAST, of which the maximum rainfall was 205.1 mm at the Kedu station northeast of FAST on July 4, 2014.