Group 1 - Shanghai has issued a high-temperature orange warning for the fifth consecutive day, with expectations of temperatures exceeding 35°C until the end of the month [1][2] - On August 24, the highest temperature in Shanghai is forecasted to reach 37-38°C, with specific districts likely exceeding 37°C [1][2] - The weather is primarily influenced by a subtropical high-pressure system, leading to a continuation of high temperatures and potential afternoon thunderstorms [2] Group 2 - The 13th typhoon of 2025, named "Swordfish," is currently located off the coast of Sanya, Hainan, but is not expected to directly impact Shanghai due to the prevailing high-pressure system [2] - The combination of high temperatures and afternoon thunderstorms is anticipated to persist, with humidity levels ranging from 40% to 85% [2]

Core Viewpoint - The northern regions of China are experiencing increased rainfall and extreme weather events, raising concerns about climate change and its impact on regional weather patterns [1][3]. Group 1: Weather Patterns and Climate Change - The northern regions have seen multiple rounds of heavy rainfall since July, with 13 instances of heavy rain reported, which is 5 more than the average for the same period [1]. - The abnormal atmospheric circulation, particularly the western Pacific subtropical high, is a significant factor contributing to the increased rainfall in northern China [2]. - The onset of the rainy season in North China occurred on July 5, nearly two weeks earlier than the average date, marking the earliest start since 1961 [2]. Group 2: Implications of Extreme Weather - The increase in extreme weather events is linked to global warming, with the World Meteorological Organization reporting a fivefold increase in weather-related disasters over the past 50 years [3][4]. - Northern China is particularly vulnerable to extreme weather due to its ecological sensitivity, facing risks such as increased frequency and intensity of extreme events [4]. - The climate risk index for China in 2024 is projected to be the highest since 1961, with significant risks from flooding and high temperatures [3]. Group 3: Response and Adaptation Strategies - There is an urgent need for a comprehensive disaster risk reduction mechanism that includes government leadership, early warning systems, and community participation [4]. - The focus should be on risk assessment, dynamic monitoring, and public education to minimize exposure to extreme weather risks [4][5]. - The United Nations has initiated a global early warning initiative aimed at ensuring that everyone is protected by early warning systems by 2027 [5][6].

Core Viewpoint - The article discusses the ongoing high temperatures and rainfall patterns in various regions of China, particularly focusing on the impact of the subtropical high pressure and the upcoming weather changes during the transition into the autumn season [1][2][3]. Summary by Sections Weather Patterns - The subtropical high pressure remains strong, leading to persistent high temperatures in regions south of the Yellow River, especially along the Yangtze River, where high temperatures are expected to frequently occur over the next seven days [1][2]. - A new round of rainfall is forecasted for northern regions, including parts of the northwest, north China, and northeast, with some areas experiencing moderate to heavy rain, and localized heavy rain [1][2][3]. Temperature Forecast - The areas most affected by high temperatures over the next week include southern Huanghuai, Jianghuai, Jianghan, and northern Jiangnan, with some regions expected to reach maximum temperatures between 37°C and 39°C, and locally exceeding 40°C [3][4]. - Despite the high temperatures, rainfall will influence the temperature range, with northern Huanghuai expected to temporarily exit the high-temperature zone due to rain, while southern regions like Guangdong and Guangxi will also see a reduction in high temperatures following rainfall [4]. Public Advisory - The article advises the public to stay informed about weather warnings and forecasts, especially regarding potential secondary disasters such as flash floods and landslides due to continuous rainfall [2][4].

Group 1 - The Central Meteorological Administration issued a blue rainstorm warning on August 23, predicting two rain belts across China, with the north experiencing rainfall concentrated in North China and Northeast regions, while the south will see significant rain in areas influenced by monsoon currents such as Yunnan, Guizhou, and Sichuan Basin [1] - In Yunnan, heavy rainfall since August 21 has led to the emergency relocation of 4,969 people, with the maximum hourly rainfall recorded at 57.5 mm in Zhaotong [2] - In Qujing, Yunnan, strong rainfall has caused 50 individuals to be trapped, necessitating emergency rescue operations to safely relocate them [3][5] Group 2 - In Shanxi's Yuncheng County, continuous heavy rainfall has resulted in rising river levels, obstructing local villagers' passage due to flooding [6][8] - The meteorological data indicates that during the "July down, August up" period, the national average precipitation has been above normal, with certain regions in North China, East China, and South China experiencing rainfall 50% to 200% higher than the historical average [10] - The persistent rainfall in North China is attributed to the positioning and strength of the subtropical high-pressure system, which has created a conducive environment for frequent rain events [10]

Summary of Key Points Core Viewpoint - The article discusses the weather patterns associated with the "End of Heat" solar term, indicating that while temperatures may begin to decline in northern regions, southern areas are likely to continue experiencing high temperatures due to the influence of the subtropical high-pressure system [1]. Group 1: Weather Patterns - Most regions still experience high temperatures during the "End of Heat" solar term, particularly in southern areas such as Shanghai, Changsha, Guangzhou, and Hangzhou [1]. - The subtropical high-pressure system may retreat southward but can still maintain stability in southern regions, leading to clear skies and rapid ground warming [1]. - High humidity in southern areas exacerbates the feeling of heat, making it feel more oppressive [1]. Group 2: Regional Differences - In northern regions, the temperature difference between day and night increases, which can lead to the phenomenon of "one autumn rain brings a cool breeze" [1]. - Rainfall in northern areas during this period tends to have a "cool and moist" characteristic, while southern rainfall is influenced by warm and humid air currents from the subtropical high-pressure edge [1]. Group 3: Agricultural Implications - The increase in temperature difference during the "End of Heat" solar term is beneficial for the accumulation of dry matter, leading to faster maturation of crops [1]. - Farmers are advised to pay close attention to weather forecasts to optimize their harvest activities during this critical period [1].

Group 1 - The weather in Hangzhou has reached record high temperatures, with the highest recorded temperature at 39.4℃, indicating a persistent heat wave that is expected to continue throughout August [1] - The Zhejiang Weather Network forecasts that the high temperatures will persist for the next 10 days, with most areas experiencing temperatures between 36-38℃, and some areas exceeding 39℃ [1][2] - The current weather patterns are influenced by a strong subtropical high pressure system, which is expected to remain dominant until the end of the month, leading to frequent high-temperature days in regions such as Huanghuai, Jianghuai, and Jiangnan [2] Group 2 - Despite the traditional end of the "伏天" (the hot season), the weather in Hangzhou remains unusually hot, prompting questions about the accuracy of traditional weather markers [2] - The meteorological explanation indicates that the traditional markers are based on historical lunar calendars and do not accurately reflect current climatic conditions, emphasizing the need for real-time weather forecasts [2] - A cold air mass has entered the northwest region of China, bringing cooler temperatures and even snowfall in higher altitudes, but it is unlikely to affect the central and eastern regions due to the prevailing subtropical high pressure [3]

Group 1 - The core viewpoint of the articles highlights the ongoing extreme heat in the region, with temperatures expected to exceed 37°C and potentially reach 40°C in certain areas due to the influence of a strong subtropical high-pressure system [1][2] - The subtropical high-pressure system is positioned further north and is stronger than usual, leading to prolonged periods of high temperatures and widespread heat effects [1] - The peak of the current heat wave is anticipated from August 21 to 23, with temperatures ranging from 37°C to 39°C across most areas, and some regions possibly reaching 40°C to 42°C [1] Group 2 - The high temperatures are affecting agricultural practices, particularly for crops like corn that are in critical growth stages, necessitating careful water and fertilizer management [2] - Agricultural meteorologists recommend measures such as foliar fertilization to help crops cope with the heat and maintain growth [2] - The ongoing heat also raises concerns about increased electricity demand and potential risks associated with high temperatures, such as tire blowouts during travel [2]

Group 1 - The core viewpoint of the articles highlights the unusual persistence of high temperatures in Hangzhou, with the highest temperature reaching 40.5℃ in Yuhang District, indicating a significant heatwave that contradicts the typical weather patterns expected after "Chufu" [1][2] - The meteorological explanation for the ongoing heat is attributed to the strong influence of the subtropical high-pressure system, which is expected to remain dominant until the end of August, leading to continued high temperatures in Zhejiang [1] - The current heatwave has resulted in 17 consecutive high-temperature days since August, with the potential to break the record for the longest continuous high-temperature period set in 2022 if the trend continues [1] Group 2 - A tropical low-pressure system in the East China Sea is being monitored, with predictions suggesting it may develop into a tropical storm; however, its overall development outlook appears weak, providing little hope for significant cooling in Hangzhou [2] - Despite the ongoing heat, a temporary relief is expected over the weekend (August 23-24) as the subtropical high shifts, potentially leading to afternoon thunderstorms and a slight decrease in maximum temperatures by 1-2℃, bringing them down to 34-37℃ [2]

Summary of Key Points Core Viewpoint - The central meteorological forecast indicates significant rainfall across various regions in China, particularly in North China and Northeast China, with warnings for heavy rain and potential geological disasters due to the weather conditions [1][3]. Group 1: Rainfall Patterns - Rainfall is expected to be concentrated in three main areas, with the largest being in North China, where heavy rain and localized torrential rain are anticipated [1]. - Recent observations show strong rainfall in the western and northern parts of Beijing, as well as scattered rain in southern Northeast China [2]. Group 2: Meteorological Factors - The subtropical high-pressure system is currently covering the Huanghuai, Jianghuai, and Jiangnan regions, contributing to ongoing rainfall [3]. - The occurrence of night rain in North China is attributed to the enhancement of low-level jet streams on the western side of the subtropical high-pressure system [6]. - Statistical data from the China Meteorological Administration indicates that the majority of rainfall in the Beijing-Tianjin-Hebei region occurs between 7 PM and 10 PM during July and August, highlighting the prevalence of night rain [4]. Group 3: Impact on Daily Life - The characteristics of summer convective rainfall increase the likelihood of rain during peak commuting hours, particularly in the afternoon to evening and late night to early morning [8]. - The geographical distribution affects the intensity of low-level jets, with nighttime conditions in mountainous areas leading to increased rainfall in plains due to temperature gradients [9]. - Meteorological authorities advise the public to stay updated on weather forecasts and to exercise caution while driving at night due to potential rain [9].

Core Viewpoint - The Shandong Meteorological Bureau has issued a yellow high-temperature warning, predicting temperatures above 35°C in inland areas from August 19 to 23 due to the influence of the subtropical high-pressure system [1]. Summary by Relevant Sections High-Temperature Forecast - From August 19 to 23, inland areas of Shandong are expected to experience high temperatures ranging from 35°C to 39°C, with some areas potentially reaching 40°C. Coastal regions will see temperatures between 30°C and 34°C [1]. Daily Weather Conditions - On August 19, cities such as Liaocheng, Dezhou (eastern), Binzhou (southern), Dongying (southern), Jinan, Zibo, Weifang, Tai'an, Heze, Jining, Zaozhuang, Linyi, Rizhao, and northern Qingdao will have temperatures between 35°C and 37°C, while other areas will range from 30°C to 34°C. The forecast for August 20 to 22 indicates similar high temperatures in inland areas [4][6][9]. Weather Patterns and Influences - The formation of high temperatures is attributed to specific weather systems, particularly the subtropical high-pressure system, which is known as a "messenger of high temperatures." Urban heat island effects and global warming are also contributing factors to the increasing frequency of extreme heat events [11].