Shanghai issues a red alert for heavy rain.

At 10:30 on August 9, the Shanghai Meteorological Station updated the orange rainstorm warning signal for the central urban area to a red rainstorm warning signal: It is expected that within the next 6 hours, the cumulative precipitation in most of the central urban area of Shanghai will exceed 220 millimeters. The orange rainstorm warning signal has been updated to a red rainstorm warning signal, and the heavy rainfall may trigger urban flooding and traffic congestion. Please especially strengthen precautions against extreme heavy rainfall. The Shanghai Flood Control Headquarters has updated the flood control and typhoon emergency response action to Level II: It is anticipated that within the next 6 hours, the cumulative precipitation in most of the central urban area of Shanghai will exceed 150 millimeters. The Shanghai Flood Control Headquarters has decided to update the flood control and typhoon response action from Level III to Level II for the central urban area.