The blocking high collapsed around 30 January and the energy source for the local cyclonic circulation was cutoff.Thus, the precipitation in southern China stopped after 1 February.

 
  • 一旦阻塞高压在1月30日前后崩溃,供给江南地区气旋性环流的能源被切断,所以2月1日的降水过程以后江南地区的持续性降水也就随之结束。
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