Core Viewpoint - The recent formation of Typhoon "Huanjasha" is expected to significantly impact southern China, particularly Guangdong, with severe weather conditions anticipated from September 23 to 25 [1][3]. Group 1: Typhoon Details - Typhoon "Huanjasha" has intensified to a super typhoon with a strength of 16 levels (55 m/s), making it the strongest typhoon in the Northwest Pacific this year [1]. - The typhoon is projected to move northwest at a speed of 15-20 km/h and is expected to make landfall in Guangdong on September 24, potentially at a strength of 14-16 levels [1][4]. - The storm's wide cloud system and the interaction with cold air could lead to severe wind and rain, necessitating high vigilance for potential disasters [3]. Group 2: Weather Impact on Regions - From September 23, heavy rainfall is expected to affect Guangdong, Fujian, and Guangxi, with the most severe weather occurring from September 23 to 25 [3]. - Specific forecasts indicate that areas in eastern Guangdong, the Pearl River Delta, and southern Meizhou may experience heavy to extreme rainfall, with short-term winds reaching 8-10 levels during thunderstorms [4]. - The Guangdong Meteorological Bureau has advised preparations for disaster prevention, especially for vessels and personnel in the northern South China Sea [4][5]. Group 3: Temperature Changes - The upcoming week will see a drop in temperatures across southern China due to the influence of cold air and typhoon activity, with maximum temperatures in Jiangnan dropping to around 25°C [4]. - Northern regions will also experience noticeable cooling, with temperatures in northern China and Northeast China hovering around 20°C during the day and around 10°C at night [4].

Core Points - The recent formation of Typhoon "Hagupit" and its impact on southern China, particularly Guangdong province, is significant as it is expected to bring heavy rainfall and strong winds [1][4]. Group 1: Typhoon Information - Typhoon "Hagupit" has reached a strength of 16 on the scale (55 m/s), making it the strongest typhoon in the Northwest Pacific this year [2]. - The typhoon is projected to move northwest at a speed of 15-20 km/h and is expected to strengthen further before making landfall in Guangdong on the morning of the 24th, potentially at a strength of 14-16 [2][6]. - The Central Meteorological Observatory has warned of severe weather conditions, including strong winds and heavy rainfall, particularly from the 23rd to the 25th [4][7]. Group 2: Regional Impact - Guangdong province is advised to prepare for disaster prevention measures due to the anticipated severe weather conditions [4][7]. - The forecast indicates that areas in eastern Guangdong, the Pearl River Delta, and southern regions will experience heavy to extreme rainfall, with potential for localized severe weather [7]. - The typhoon's large wind field and the possibility of multiple landfalls increase the uncertainty regarding the exact timing and location of landfall [6][7]. Group 3: Temperature Changes - The upcoming week is expected to see a drop in temperatures across southern China due to the influence of cold air from the north and the typhoon activity, with maximum temperatures in Jiangnan dropping to around 25°C [8]. - Northern regions will also experience noticeable cooling, with temperatures in northern China reaching just above 20°C during the day and around 10°C at night [8].

Summary of Key Points Core Viewpoint - The upcoming three days will see significant temperature fluctuations in northern China, with a peak followed by a rapid drop due to cold air, while southern regions will experience notable rainfall, including strong convective weather, prompting the public to plan their travel accordingly [1][2][3]. Group 1: Northern Weather Conditions - Northern regions experienced a temperature rise, with some areas in Jiangnan, Huazhong, and Huanghuai increasing by approximately 6°C to 10°C, reaching above 25°C, and some areas hitting around 30°C [2]. - Major cities like Beijing are expected to reach a high of 32°C, marking a new temperature record for the year, while Zhengzhou may rise to 35°C [2]. - Following the temperature peak, a cold front will lead to a significant drop in temperatures, with cities like Shenyang dropping from 25°C to 15°C and Tianjin from 31°C to 25°C [2]. Group 2: Southern Weather Conditions - Southern regions, particularly in Jiangnan and Huazhong, will see a return of rainfall, with some areas experiencing heavy rain and strong convective weather, including thunderstorms and gusty winds [3][7]. - Recent rainfall data indicates that areas in Yunnan, Guangxi, Guangdong, and Hainan have experienced heavy to torrential rain, with localized areas in Guangdong and Hainan facing severe downpours [3]. - The Central Meteorological Observatory forecasts that the next two days will bring significant rainfall from the southwest to the southeast, affecting regions from southwestern China to Jiangnan and Huazhong, with potential for localized heavy rain [3][5].

Core Viewpoint - The article discusses the impact of cold air and warm moist air on weather patterns in China, highlighting significant temperature fluctuations and heavy rainfall in southern regions over the next few days [1][2][6]. Weather Patterns - Cold air is affecting the middle and lower reaches of the Yangtze River and areas north, leading to strong winds and temperature drops [1][6]. - Southern regions are experiencing frequent heavy rainfall, with the rain intensity expected to weaken during the day but strengthen again at night [2][3]. Regional Weather Forecast - Areas such as southern Jiangxi, central and southern Fujian, northern Guangdong, and parts of Guangxi are experiencing heavy rain, with some regions facing torrential downpours [2][3]. - The Central Meteorological Observatory predicts snowfall or sleet in northeastern Inner Mongolia, northwestern Heilongjiang, and other regions, with some areas expecting heavy snow [3][4]. Temperature Changes - The temperature in the Huanghuai region and north is expected to drop by 4 to 6 degrees Celsius, with some areas experiencing drops of over 8 degrees Celsius [6]. - Fluctuations in temperature are anticipated across most of the country, with some areas seeing highs around 30 degrees Celsius before dropping to around 20 degrees [6]. Future Weather Outlook - A new round of rainfall is expected in Jiangnan and northern South China from April 26 to 27, with cumulative rainfall likely to exceed normal levels for this time of year [5]. - The public is advised to pay attention to weather forecasts and warnings, especially regarding strong convective weather and its impact on transportation [6].