Core Points - A strong cold air mass is affecting the central and eastern regions of China, leading to a significant drop in temperatures, especially in the northern areas [1][2] - The southern regions are also experiencing a decline in temperatures, with many areas expected to set new low records [3][4] Temperature Changes - From October 19 to 20, northern temperatures are expected to be 8 to 10 degrees Celsius lower than the average for this time of year, resembling early to mid-November conditions [3] - Specific examples include Taiyuan, where the temperature on October 20 is forecasted to be only 7 degrees Celsius, marking a new low since the start of autumn [3] - In the south, regions like Jiangnan are predicted to see maximum temperatures drop below 20 degrees Celsius by around October 21, with Fuzhou's temperature expected to fall from over 35 degrees Celsius to 21 degrees Celsius [3] Rain and Typhoon Impact - Continuous rain is expected in the eastern Southwest and southeastern Northwest regions, with the approach of Typhoon "Fengshen" increasing wind and rain in coastal areas of South China [4][5] - The Central Meteorological Observatory issued a blue alert for Typhoon "Fengshen," which made landfall in the Philippines and is expected to strengthen as it moves towards the South China Sea [5] - The typhoon's maximum wind speed is forecasted to reach 30 to 35 meters per second, with significant impacts anticipated in South China starting from October 19 [5][6]

央视网消息：据中国天气网消息，中国气象局调整重大气象灾害（台风）Ⅱ级应急响应为Ⅳ级的命令： 今年第21号台风"麦德姆"于10月6日1点10分前后在广西防城港市沿海再次登陆，登陆后强度逐渐减弱， 5时已减弱为热带风暴级，中央气象台6日6时发布台风蓝色预警。 经综合研判和应急会商，中国气象局局领导于10月6日8时45分签发命令，中国气象局办公室、观测司、 预报司、减灾司、专项司、数据司、气象中心、气候中心、卫星中心、信息中心、数值预报中心、探测 中心、公共服务中心、气科院、人影中心、宣传科普中心、机关服务中心、华风集团由重大气象灾害 （台风）Ⅱ级应急响应调整为（台风）Ⅳ级应急响应。广西、广东、海南、云南等省级气象局根据实际 研判调整相应级别应急响应，继续做好监测预报预警，按照气象灾害应急响应工作流程做好各项工作， 有重要情况及时报告中国气象局。 ...