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2010年沈阳有完整气象记录的主汛期为48天,从7月19日至9月5日,其持续时间之长和结束时间之迟,均为历史之最。沈阳在48天的主汛期内,共历23个降雨日,全市平均降水量516毫米,为历史同期的2.1倍,创51年来之历史极值。沈阳在每2天出现一次的降雨中,共有6次较强降水天气过程,4次为区域性暴雨天气,此现象30年未遇。沈阳在主汛期共发布5次暴雨橙色预警,3次一级暴雨,1次二级暴雨,水患之险创历史纪录。
In 2010, the main flood season with a complete meteorological record in Shenyang is 48 days. From July 19 to September 5, the duration and end time of the main flood season are the highest in history. During the 48-day main flood season, Shenyang experienced a total of 23 rainfall days with an average rainfall of 516 millimeters, 2.1 times of the same period of history and the historical maximum of 51 years. In every two days of precipitation in Shenyang, a total of six strong precipitation process, four times for regional heavy rain, this phenomenon has not been encountered in 30 years. Shenyang issued a total of five rainstorm orange warnings during the main flood season, three first-level rainstorms, one second-level rainstorm and a record flood risk.