Shanghai issues a blue cold wave warning.

Shanghai Central Meteorological Observatory issued a blue cold wave warning signal at 16:35 on December 12, 2025: It is expected that in the next 48 hours, the minimum temperature in most parts of the city will drop by 9-11C. On the morning of the 14th, the minimum temperature in downtown areas will be around 1C, and in the suburbs it will be between -2C to 0C, with thin ice. Please pay attention to prevent adverse effects caused by strong winds, significant cooling, and prolonged low temperatures.