大回暖模式持续 东北江南等地暖如10月底

Core Viewpoint - A significant warming trend is expected across most regions of China from December 17 to 19, with temperatures notably higher than usual, particularly in Northeast and Jiangnan areas, resembling conditions typical of late October. However, a cold front is anticipated to disrupt this warming trend after December 19, leading to a substantial drop in temperatures across central and eastern regions [1][2]. Summary by Sections Warming Trend - The warming trend will last for three days, with temperatures rising significantly across the country. The highest temperature line of 20°C is expected to move northward to southern Henan, while the 10°C line may reach southern Hebei. The most pronounced temperature increases are in Northeast and Jiangnan regions, with average highs exceeding 10°C and localized areas reaching around 12°C higher than normal [2]. Temperature Forecast - By the day after tomorrow, the Yangtze River middle and lower reaches will see maximum temperatures slightly above 20°C, with major cities like Hefei and Wuhan exceeding 20°C. However, this warming will be interrupted by a cold air mass, leading to a significant temperature drop back to normal or below normal levels starting December 21. For instance, Hefei's temperature is expected to drop from 21°C to single digits [2]. Weather Conditions - For the next three days, most of the country will experience clear and dry weather, with minimal precipitation. In the north, areas such as northern Xinjiang, northeastern Inner Mongolia, and Heilongjiang may see some snowfall, while the south will have rain mainly in Yunnan and along the southern coast [3].