近几天，副热带高压位置偏北、稳定少动，导致华北、东北降雨异常强盛，而华中到华南地区则天气闷 热。好在，副热带高压将开始松动，逐渐向东撤退，北方的强降雨也将逐渐减弱…… 华北东北持续多雨模式 华东雨水发展增多 北方这场强降雨已经持续多日，河北、内蒙古等多地雨量刷新历史纪录。昨天（7月25日）13时至23 时，河北阜平累积降雨量达375.2毫米，仅10个小时便打破了当地单日降雨量纪录。 今天白天，西北地区东部、华北、东北一带降雨持续，局地雨势较强。像黑龙江五常、吉林九台、内蒙 古喀喇沁旗等站，6小时雨量均超过30毫米。 好在，副热带高压终于要挪窝了！明后两天，随着副高减弱东撤，向北输送的水汽也会减少，因此华 北、东北一带的降雨强度也将随之逐渐减弱。 海上的台风也逐渐消停下来。今天，7号台风"范斯高"和8号台风"竹节草"先后停编。虽然如此，华东一 带的风雨影响还在持续。"范斯高"和"竹节草"的残余环流结合季风气流，仍将给浙江、福建等地带去降 雨。 并且未来几天热带低值系统依然活跃，东海南部一带还将有新的低值系统发展起来，并将西行靠近华 东。因此，华东等地也将持续多雨。像是杭州，一直到8月1日几乎每天都会和雨水碰面， ...

Group 1 - The northern regions of China have been experiencing record-breaking heavy rainfall since July 23, with some areas receiving nearly a year's worth of rain in a single day [1] - A total of 19 weather stations in northern China have broken historical monthly precipitation records, with 13 stations setting all-time highs [1] - The extreme rainfall has resulted in cumulative precipitation exceeding 100 millimeters in several areas, with some regions like Shijiazhuang and Baoding surpassing 400 millimeters [1] Group 2 - The Central Meteorological Observatory has issued a yellow rainstorm warning, predicting heavy rain to continue but with a weakening trend over the next three days [2] - Areas expected to be affected include parts of Inner Mongolia, Shaanxi, Shanxi, Hebei, Beijing, and several other provinces, with localized heavy rain and strong convective weather possible [2] - Despite the expected reduction in rainfall intensity, caution is advised, especially during nighttime when heavy rain is more likely [2] Group 3 - The causes of the heavy rainfall in North China are complex, involving sufficient moisture from the summer monsoon and the influence of cold air from the westerly wind belt [3] - The topography of the Taihang Mountains enhances the efficiency of moisture condensation, contributing to extreme localized rainfall [3] - The phenomenon known as "three typhoons dancing together" is related to the rainfall but does not have a direct causal relationship with the current heavy precipitation events [3]

Core Viewpoint - The article discusses the onset of the "Seven Down, Eight Up" flood prevention period in Northern China, highlighting the significant rainfall and extreme weather events expected during this time [1][4][11]. Summary by Sections Rainfall Patterns - The "Seven Down, Eight Up" period typically occurs from late July to early August, during which Northern China experiences concentrated rainfall, accounting for about one-third of the annual precipitation [4][10]. - Historical data from 1991 to 2020 indicates that major cities in the region, such as Beijing, Shijiazhuang, and Jinan, receive over 50% of their annual rainfall during these two months [4][6]. Extreme Weather Events - The article references several historical extreme rainfall events, including the 2021 Zhengzhou and 2012 Beijing floods, emphasizing the potential for record-breaking rainfall during this period [6][10]. Meteorological Influences - The article identifies key meteorological factors contributing to the rainfall, including the influence of the subtropical high-pressure system, warm moist air from the sea, and cold air from Siberia, which interact to create severe weather conditions [7][10]. - The geographical features, such as the Taihang and Yanshan mountain ranges, play a significant role in enhancing rainfall as warm moist air is forced to rise and cool, leading to precipitation [10]. Forecast for Current Year - According to the National Climate Center, the forecast for this year's "Seven Down, Eight Up" period indicates above-normal precipitation in regions such as Inner Mongolia, Heilongjiang, and Shandong, with rainfall expected to be 20% to 50% higher than usual [10][11].

Group 1 - The current weather in Hangzhou during the "Great Heat" period is unusually mild, with a maximum temperature of only 32.7℃ due to the influence of tropical systems and frequent rain [1] - The upcoming weather forecast indicates that temperatures may rise slightly to around 35℃, but overall, high temperatures are not expected to dominate this season [1] - A new tropical low pressure system is developing in the sea, which may strengthen into Typhoon "Vansga" and could impact the weather in the Zhejiang-Fujian coastal area [2] Group 2 - The expected weather conditions for the end of July include continued rain and thunderstorms across Zhejiang, with maximum temperatures ranging from 30 to 33℃, deviating from typical summer heat [2] - The presence of tropical systems is preventing the subtropical high pressure from dominating the Jiangsu-Zhejiang-Shanghai region, leading to a cooler "Great Heat" period [2] - The weather forecast emphasizes the need for ongoing monitoring of weather updates and warnings due to the potential impact of the developing tropical system [2]

Core Viewpoint - The article discusses the weather conditions in Guangdong, highlighting the impact of high temperatures and the potential formation of Typhoon "Vapa" in the coming days [2][4][6]. Summary by Sections - **Weather Conditions**: From July 16, Guangdong will experience mainly sunny and hot weather, with maximum temperatures ranging from 34°C to 37°C [2][8]. - **Typhoon Development**: Although Typhoon "Baihe" currently has no impact on China, a disturbance south of it is expected to develop into Typhoon "Vapa" after July 17, potentially making landfall in Guangdong or Hainan early next week [5][6]. - **Rainfall Forecast**: On July 16-17, Guangdong will continue to experience high temperatures along with thunderstorms, with localized heavy rain or storms expected [8][13]. - **Future Weather Predictions**: The Central Meteorological Observatory forecasts that 1 to 2 more typhoons may form in the Northwest Pacific and could affect the southeastern coastal areas of China after mid-July [12]. - **Severe Weather Alerts**: On July 18-19, thunderstorms are expected to intensify across Guangdong, with many areas experiencing moderate to heavy rain and short-term wind gusts of 8 to 10 levels [9][13].

Core Viewpoint - The article discusses the reasons why people feel hotter than the temperature reported by meteorological agencies, particularly during the ongoing high-temperature weather in China. It highlights the differences between measured temperatures and perceived temperatures due to various environmental factors. Group 1: Temperature Measurement and Perception - Meteorological temperature is measured in a standardized environment, specifically in a Stevenson screen located 1.5 meters above grass, which may not reflect ground-level temperatures in urban areas [3] - Urban surfaces like concrete and asphalt can be 4 to 5 degrees Celsius hotter than the temperature recorded in the Stevenson screen due to direct sunlight and heat absorption [3] - Perceived temperature, or "feels-like" temperature, is influenced by multiple factors including air pressure, wind, and humidity, making it subjective and variable among individuals [3] Group 2: Weather Patterns and Conditions - This year, the subtropical high pressure has moved northward earlier and has a larger influence, leading to significant moisture transport and higher humidity levels, resulting in a "sauna-like" environment in cities like Beijing [4] - The ongoing high-temperature weather is characterized by a long duration and wide impact, particularly in southern regions where humidity is notably high [5] Group 3: Public Health and Safety Recommendations - Experts advise the public to minimize outdoor activities during high temperatures and for those working outdoors to take necessary protective measures [5] - A national-level heat health risk warning system has been established, categorizing risks into five levels, allowing the public to take appropriate actions such as staying cool indoors and ensuring adequate hydration [5]

Group 1 - The core viewpoint of the articles discusses the unusual weather patterns in Hangzhou, with a return to high temperatures after a brief cool period, indicating a shift back to summer conditions [1] - The meteorological explanation for the recent weather includes an abnormal position of the subtropical high pressure, which has not been controlling Hangzhou, resulting in lower than expected temperatures [1] - A forecast predicts that high temperatures will peak around 37-38°C in Hangzhou, but the subtropical high pressure is not strong enough to maintain these temperatures for an extended period [1] Group 2 - The upcoming weather forecast includes three days of afternoon thunderstorms or rain from Thursday to Saturday, with temperatures dropping to around 31°C by Friday [2] - From Sunday, a southeast airflow is expected to bring cooler air and increased cloud cover, maintaining maximum temperatures around 33°C [2] - The forecast also mentions the potential formation of two typhoons, which may impact Hangzhou with rain and cooling effects [2]

Core Viewpoint - The recent extreme heat wave in China is attributed to the stable maintenance of the subtropical high pressure and continental high pressure, leading to significant warming effects across various regions [1][2]. Group 1: Causes of the Heat Wave - The extreme heat in northern regions is primarily caused by continental high pressure and the formation of subtropical high pressure [2]. - The subtropical high pressure has moved northward rapidly this year, affecting areas like Henan, which typically would not experience such conditions until later in the summer [2]. Group 2: Temperature Records - As of July 13, 150 national meteorological observation stations recorded daily maximum temperatures that broke local historical records for July [1]. - In key high-temperature areas such as eastern Shandong and northern Jiangsu, 15 stations set new historical high-temperature records since their establishment [1]. Group 3: Future Temperature Predictions - Over the next 10 days, regions including central and southern North China, Huanghuai, Jianghan, and Guanzhong in Shaanxi are expected to experience sustained high temperatures, with daily maximums exceeding 35°C for 4 to 7 days [3]. - The peak of this heat wave is anticipated on July 15-16, with some areas reaching maximum temperatures of 39°C to 42°C [3]. Group 4: Public Advisory - Due to the significant temperature differences between northern and southern regions, the public is advised to take protective measures against the heat, especially vulnerable groups such as the elderly, children, and those with pre-existing health conditions [3].

Group 1 - The weather in Hangzhou has shifted from short-term heavy rainfall to a period of high temperatures due to the strengthening of the subtropical high-pressure system [1] - The maximum temperature in Hangzhou is expected to rise significantly, with forecasts indicating that local areas may reach up to 39°C [2] - Despite the high temperatures, there will still be localized strong convective weather, particularly in mountainous areas, due to residual moisture and unstable thermal conditions [1] Group 2 - Rainfall frequency is expected to decrease, leading to a prolonged period of hot weather, with the peak of high temperatures anticipated around Wednesday [2] - From Thursday onwards, the weather will change again with the return of rain and thunderstorms, resulting in a drop in temperatures [2] - The coastal areas will continue to experience rain or thunderstorms, while other regions will also see afternoon thunderstorms, making it difficult for high temperatures to persist [2]

Core Insights - The province is experiencing extreme high temperatures, with 10 national meteorological observation stations recording historical highs for July [2][3] - The high temperatures are expected to persist for the next 10 days, influenced by subtropical high pressure and continental warm high pressure [2][3] Weather Conditions - Since July 3, the province has been under a prolonged high-temperature weather pattern, with inland areas reaching maximum temperatures of 36-39°C, and some areas exceeding 40°C, peaking at 43.9°C in Linyi [2][3] - The most intense heat is forecasted for July 14-15, with inland areas potentially reaching 38-40°C and localized areas exceeding 42°C [3] Meteorological Factors - The current heatwave is primarily driven by the northward movement of the subtropical high pressure, which is stronger and earlier than in previous years [2] - The subtropical high pressure is controlling the central and eastern regions of the country, enhancing daytime radiation heating and contributing to the humid heatwave [2] Recommendations and Precautions - Due to the prolonged and extreme nature of the heat, it is advised to ensure energy supply and implement heat prevention measures [3] - The ongoing high temperatures and lack of rainfall may exacerbate drought conditions in agricultural areas, necessitating close monitoring of soil moisture levels [3] - The public is encouraged to stay updated on weather forecasts and warnings to prepare for potential severe weather events, including thunderstorms and heavy rainfall [3]