At 22:07 on July 20, 2026, the Shanghai Meteorological Observatory updated the yellow warning signal for rainstorms in central urban areas to a blue warning signal for rainstorms: It is expected that most parts of central urban areas will still experience short-term heavy precipitation with rainfall of 30-40 mm per hour before midnight. The yellow warning signal for rainstorms was updated to a blue warning signal for rainstorms. Please be careful to prevent urban flooding that may be caused by heavy rainfall.

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