Weather Changes in China - The weather patterns in China are contrasting, with northern regions experiencing cooler temperatures while southern regions continue to face high temperatures [1][6] - Southern high temperatures have temporarily decreased but are expected to return after September 11 due to the strengthening of subtropical high pressure [4][3] Southern High Temperature Records - Southern cities like Hangzhou and Nanchang have set records for consecutive high-temperature days, with Hangzhou reaching 35 days and Nanchang recording its 60th high-temperature day this year [1][3] - Despite a temporary reduction in high temperatures, many areas in the south are still experiencing extreme heat, with records likely to be broken in the coming days [1][3] Northern Cooling and Temperature Variations - Northern regions are experiencing significant temperature drops, with notable increases in the temperature difference between day and night, exemplified by locations like Dunhuang, where the temperature difference exceeds 20°C [6][4] - The onset of the "White Dew" solar term is expected to further accentuate these temperature variations [6] Rainfall and Typhoon Activity - Rainfall is expected to concentrate in regions between the Yellow River and the Yangtze River, with significant precipitation anticipated in southwestern areas [7] - The formation of Typhoon "Tabha" is imminent, with expectations of it making landfall in Guangdong, leading to increased rainfall in southern regions [9][8]

南方大范围高温闷热持续华北西北秋凉上线 在副热带高压影响下，昨天南方高温范围又有所扩张，重庆中部、湖北东部、浙江中西部、福建西北 部、江西、湖南、广东中北部、广西东北部等地部分地区出现35℃以上高温天气。 今天（9月4日）受冷暖空气交汇影响，甘肃东南部、四川、陕西、山西、湖北等地将有明显降雨，部分 地区有大到暴雨。同时，冷空气也将给华北、西北等地带来秋凉，明天大部地区最高气温将降至25℃以 下。而在南方，今明天暑热还将持续，江南、华南等地将有大范围高温，闷热感或贯穿全天。 陕西四川等地降雨频繁需警惕次生灾害 随着副热带高压加强北抬，昨天位于其边缘的陕西、湖北、河南、山东等地出现了明显降雨。实况监测 显示，陕西东南部、山西南部、河南中西部、山东半岛南部、湖北中部、四川东北部等地部分地区出现 大到暴雨，湖北荆门、山东青岛、四川南充和巴中等局地遭遇大暴雨，湖北宜昌局地特大暴雨。 今天，在冷空气和暖湿气流交汇下，降雨将集中在西北地区东部、华北西部、黄淮西部等地。中央气象 台预计，黑龙江西部、内蒙古中部、青海东部、甘肃中东部、宁夏大部、陕西、山西、四川盆地北部、 河南、湖北北部等地的部分地区有中到大雨，其中，甘肃东南部 ...