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].

Core Viewpoint - The article discusses the extreme cold weather conditions in northern China, with record low temperatures, followed by a brief warming period before another cold front arrives. Group 1: Current Weather Conditions - The lowest recorded temperatures in northern China include -41.8℃ in Inner Mongolia's Tulihe, -41.5℃ in Heilongjiang's Huzhong, and -41℃ in Mohe, marking new lows for this winter [1] - The perceived temperature in these areas is below -45℃, indicating severe cold conditions [1] Group 2: Temperature Trends - A temperature divergence is observed across the country, with regions south of the Huai River and parts of the northwest experiencing a warming trend, while eastern Inner Mongolia and northeastern areas face a 6 to 10℃ drop due to cold air [3] - From December 18 to 19, temperatures are expected to rise significantly, with the highest temperatures reaching around 20℃ in southern Henan to northern Anhui, which is notably higher than the seasonal average [3] Group 3: Regional Temperature Changes - Notable warming is expected in northeastern and central-southern Yangtze River regions, with average temperature increases of around 10℃, and some areas exceeding 12℃ [4] - Cities like Harbin, Changchun, Shenyang, Hefei, Wuhan, and Changsha are projected to see maximum temperatures on December 19 that are 10℃ higher than the typical mid-December averages, with Hefei potentially reaching 22℃, which could break the mid-December record [5] Group 4: Future Weather Forecast - The warming trend will cease after December 19, as a stronger cold air mass will lead to noticeable temperature drops across the country [7] - Following the winter solstice, temperatures are expected to return to normal or below normal levels, reinstating typical winter conditions [7] - Precipitation is expected to be minimal, with dry and clear weather dominating most regions, although some snowfall is anticipated in northern areas, particularly in Xinjiang and Heilongjiang [7][8]

Group 1 - The core viewpoint of the articles is that most regions in China will experience a warming trend from December 16 to 19, despite some cold air interruptions [1][2] - The temperature in Northeast and Jiangnan regions is expected to be significantly higher, around 10°C above the average for this time of year, resembling conditions typical of early November [2] - Major cities like Changsha will see maximum temperatures exceeding 20°C, which is more than 10°C higher than the average for mid-December [2] Group 2 - The northern regions will maintain a dry and sunny weather pattern, while the southern regions will experience light rain starting tomorrow [3][6] - There will be localized snow or sleet in parts of Inner Mongolia, Xinjiang, and the Tibetan Plateau, with some areas in Xinjiang expected to see heavy snowfall [5][8] - The public is advised to take precautions against potential fog and haze in regions like North China and Huanghuai, which may affect visibility and traffic safety [9]

Group 1 - The core viewpoint of the articles highlights the frequent rain and snow in the Tibetan Plateau, with local areas experiencing heavy snowfall or blizzards, necessitating precautionary measures [1][2][5] - The Central Meteorological Administration forecasts that from October 28 to 30, parts of the Tibetan Plateau will see moderate to heavy snow, with local areas facing blizzards [2][4] - In the central and eastern regions of China, precipitation is expected to increase, with specific areas experiencing moderate to heavy rain [2][3][4] Group 2 - The temperature across most of China is expected to rise, with the highest temperatures reaching above 20°C in southern North China and over 25°C in parts of Jiangnan and South China [6] - There will be significant diurnal temperature variations, particularly in northern regions, where differences may exceed 10°C, and in some areas, close to 20°C [6] - The presence of cold air will lead to the development of fog and haze in certain regions, with moderate haze expected in parts of North China and the Huanghuai region [6]