中央气象台：江南北部有较强降水过程 全国大部平均气温偏高但冷暖起伏大

Summary of Key Points Core Viewpoint - The article discusses recent and upcoming weather patterns in China, highlighting significant rainfall in the Jiangnan region and temperature fluctuations across the country. Group 1: Recent Weather Conditions - Over the past ten days (February 5-14), most regions in China experienced below-average rainfall, with Jiangnan and parts of Guangxi, Guizhou, and Chongqing receiving 5-20 millimeters of precipitation, and some areas in northeastern Jiangnan receiving 30-40 millimeters. Overall, rainfall was less than the historical average for this period [1][2]. - The average temperature across most of the country was 1-2°C higher than normal, with northern Xinjiang seeing an increase of 3-4°C [2]. Group 2: Upcoming Weather Forecast - In the next ten days (February 15-24), significant rainfall is expected in Jiangsu, Jianghan, Jiangnan, and parts of southwestern China, with total precipitation ranging from 10-30 millimeters, and some areas in northern and western Jiangnan and eastern Guizhou could see 40-60 millimeters. This is above the historical average for this time of year [3][4]. - The average temperature in most regions will be 1-3°C higher than the historical average, with areas in Xinjiang, Northeast China, and Huanghuai experiencing increases of 4-6°C [4]. Group 3: Major Weather Events - On February 15-16, a strong cold front will impact northeastern Inner Mongolia, northern Heilongjiang, and parts of Jiangnan, leading to temperature drops of 6-10°C, with some areas in Jiangnan experiencing drops exceeding 12°C. The minimum temperature line will move southward, affecting various regions [6][10]. - Rainfall is expected in southwestern China, Jiangnan, and Huabei, with potential thunderstorms and severe weather conditions, including hail and freezing rain in some areas [9][10]. - From February 21-23, another cold front will further decrease temperatures by 4-8°C across central and eastern regions, with some areas experiencing drops over 10°C [11]. Group 4: Visibility and Air Quality - On February 15, dense fog is anticipated in southern Jiangsu, northern Zhejiang, and parts of Hunan and Jiangxi, with visibility dropping below 1 kilometer in some areas. Additionally, light to moderate haze is expected in regions such as Huabei and Huanghuai starting from the night of February 16 [12].