A Strong cold snap from the north is likely to see temperatures plunge around 10 degrees Celsius today and tomorrow in the city.
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The mercury touched 23 degrees Celsius in downtown yesterday followed by a brief wet spell. The overcast conditions will remain, according to the Shanghai Meteorological Bureau, with temperatures dropping to a high of 14 degrees and a low of 6 degrees.
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It will hover around 4 degrees tomorrow morning.
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"The minimum temperature downtown could drop to 4-5 degrees tomorrow morning and around 2 degrees in the suburbs," said Kong Chunyan, a bureau official, said. The wet conditions will last till the weekend.
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"The cold spell will lead to fluctuations in the mercury, causing respiratory, cardiovascular and cerebrovascular problems," Kong said.