全国大部开启大回暖模式 长江沿线将冲击20℃

Core Viewpoint - The recent cold wave has affected many regions in China, but temperatures are expected to rise significantly above normal levels in the coming days, particularly along the Yangtze River, where highs may reach 20°C during the "Three Nines" period [1]. Temperature Trends - The cold air mass has caused temperatures to drop to recent lows from January 10 to 11, with many northern areas experiencing temperatures below freezing [1]. - Despite the active cold air, the intensity is weak, and most regions, except for the Northeast, will see a rebound in temperatures over the next five days [1]. - The highest temperatures are expected between January 14 and 16, with areas in North China and the Huang-Huai region reaching around 15°C, and the Yangtze River basin potentially exceeding 20°C [1]. Regional Highlights - In Hefei, the maximum temperature on January 16 is forecasted to reach 20°C, possibly breaking the local record for warmth in mid-January [2]. - Hangzhou is expected to have consecutive days from January 14 to 16 with maximum temperatures of 20°C or higher, while Changsha may see highs of 22°C on January 14 and 16 [2]. Weather Variability - Although daytime temperatures are rising, nighttime temperatures will remain low due to a lack of cloud cover, leading to significant diurnal temperature variations of 10°C to over 15°C [3]. - The public is advised to dress in layers to cope with the large temperature differences [3]. Future Outlook - A strong cold air mass is expected to arrive on January 17, bringing noticeable cooling to the Northwest and much of Central and Eastern China, with average temperatures in late January likely shifting from above normal to below normal [3].