上海中心气象台发布了今年以来首次最高级别的暴雨红色预警信号。
Local weather forecasters issued the first red rainstorm alert of the year - the highest on the 3-level warning system.
上海中心气象台的业务使用表明，总体估计的准确率达70 %左右。
The operational application in Shanghai Meteorological Center shows that its average estimate accuracy reaches about 70%.
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