Core Viewpoint - The article discusses the characteristics and impacts of autumn typhoons in China, highlighting their increasing frequency and intensity compared to summer typhoons, as well as their potential for causing severe weather events and disasters [1][5]. Group 1: Typhoon Statistics - Over 40% of typhoons occur in autumn, with 859 autumn typhoons recorded from 1949 to 2024, closely following the 867 summer typhoons [1]. - Autumn typhoons exhibit greater peak intensity, with over 60% of typhoons in September and October reaching typhoon strength or above, peaking at 74% in October [1]. Group 2: Typhoon Path and Landfall - Autumn typhoons tend to make landfall further south compared to summer typhoons, primarily affecting Guangdong, Hainan, Taiwan, and Fujian, with Guangdong experiencing 72 landfalls [3][5]. - The shift in landfall locations is attributed to the movement of the subtropical high-pressure system, which influences the paths of typhoons [5]. Group 3: Historical Impact of Autumn Typhoons - Historically, nine autumn typhoons have made landfall in China as super typhoons from 1949 to 2024, with significant destructive potential [6]. - The strongest recorded autumn typhoon was "Marge" in 1973, causing over 900 deaths and extensive property damage in Hainan [6]. Group 4: Factors Contributing to Intensity - The combination of high sea temperatures and the presence of cold air masses in autumn increases the likelihood of stronger typhoons, as the temperature gradient enhances wind speeds [6]. - The interaction between autumn typhoons and cold air can lead to extreme rainfall and heightened disaster risks [6]. Group 5: Current and Future Impacts - The upcoming typhoon "Hua Jasha" is expected to impact southern China, potentially combining with cold air to produce extreme weather conditions [7].

Group 1 - The weather in Hangzhou is experiencing a significant fluctuation due to the influence of the subtropical high pressure, with temperatures reaching up to 35°C and a total of 59 high-temperature days recorded so far this year, tying with 2022 for the second-highest in history [1] - The upcoming week is expected to see a transition as cold air begins to penetrate, leading to a decrease in high temperatures, with forecasts indicating a drop to around 30°C starting Thursday [2] - Despite the current dominance of the subtropical high pressure, its influence is gradually weakening, allowing for the possibility of afternoon thunderstorms and rain, particularly in the northeastern regions [1][2] Group 2 - The cold air is anticipated to bring increased rainfall and a cooling effect across the province, with temperatures expected to drop significantly, especially in northern Zhejiang where highs may only reach 28°C [2] - The subtropical high pressure has been persistent since August, but its future strength remains uncertain as it may strengthen again after the current cold air system passes [2] - Continuous monitoring of weather patterns is advised as the interaction between cold air and subtropical high pressure will determine future temperature trends [2]

Core Points - The article discusses the extreme heat wave in Hangzhou, which has set multiple historical records for high temperatures and consecutive sunny days [1][2][3][4][5][6][7][8] - The arrival of moisture from Typhoon "Tabha" is expected to bring relief in the form of thunderstorms, temporarily reducing high temperatures [5][6] - The persistence of the subtropical high-pressure system indicates that high temperatures may return after a brief respite [7][8] Summary by Sections - **Record High Temperatures** - Hangzhou has experienced unprecedented high temperatures, with the highest recorded temperature reaching 38°C in early September [1] - The city has set multiple records for consecutive sunny days, with 43 days from December 14, 2024, to January 25, 2025, marking the longest streak in history [2] - Other notable records include the highest temperature of 30.3°C on March 2, 2025, and 36 consecutive high-temperature days from August 3 to September 7, 2025 [3][4] - **Impact of Typhoon "Tabha"** - Typhoon "Tabha" is expected to bring moisture to Hangzhou, leading to thunderstorms that will help alleviate the extreme heat [5][6] - The thunderstorms are anticipated to cover the sky, reducing direct sunlight and lowering temperatures to around 32°C [6] - **Future Weather Predictions** - The subtropical high-pressure system is expected to regain strength, potentially leading to a resurgence of high temperatures by the following week [7] - The article suggests that the high temperatures may persist into October, similar to the patterns observed in 2022 [8]

Core Insights - The summer rainy season in North China has set records for both duration and rainfall, marking the strongest rainy season since 1961 [1][2] - The rainy season began on July 5, 2023, which is 13 days earlier than the average, and ended on September 2, 2023, 16 days later than usual, resulting in a total duration of 29 days longer than the average [1][2] - Cumulative rainfall reached 356.6 mm, exceeding the average by 161.1%, establishing a historical high since 1961 [1] Climate Factors - The early onset of the rainy season is attributed to the abnormal northward movement of the subtropical high-pressure system, which has been influenced by climate change and ocean temperature anomalies [2] - The subtropical high-pressure system has been stronger and positioned further north than in previous years, contributing to increased moisture transport to North China [2] Long-term Trends - There is a linear increasing trend in rainfall during the rainy season in North China since the 21st century, although no significant increase is observed over a longer time frame from 1961 to 2024 [3] - Historical data indicates that years with rainfall exceeding 300 mm occurred primarily in the 1980s and 1990s [3] Weather Patterns - The combination of global warming and the early rainy season has led to increased humidity and prolonged high temperatures, resulting in a shift from dry heat to humid heat in North China's summers [4] - The frequency of humid heat events has increased significantly compared to dry heat events since 1981, with a growth rate of 2 to 3 times [4] Climate Change Implications - The record-breaking rainy season is seen as a localized manifestation of climate change, with rising atmospheric moisture and urban heat island effects contributing to more frequent and intense extreme rainfall events [4]

Core Viewpoint - The article discusses the return of high temperatures in the Jiangnan region of China, with temperatures approaching 39°C, leading to a "steaming sauna" effect as the subtropical high pressure strengthens again [1] Summary by Relevant Sections Weather Conditions - From September 5, the Jiangnan region is experiencing a new wave of heat, with temperatures rapidly nearing 39°C, indicating a return to high-temperature conditions [1] - Zhejiang meteorological department forecasts that from September 5 to 8, most areas in the province will see sunny and hot weather, with maximum temperatures reaching 36°C to 38°C, and some areas exceeding 39°C [1] - Shanghai's maximum temperature is expected to rise to around 35°C starting September 5, marking the beginning of a new heat wave [1] - Jiangsu's areas along the river and southern regions will also be covered by high temperatures from September 5 to 7 [1] Future Weather Predictions - Central Meteorological Station data indicates that while cold air and rain may arrive after September 6, the relief will be limited, and most of Jiangnan will still struggle with heat [1] - Meteorological experts predict that around September 9, the subtropical high pressure may weaken and retreat eastward, allowing for a temporary drop in temperatures in some areas of Jiangnan, but the high temperatures are likely to return soon after [1] Regional Weather Disparities - Currently, China's weather map shows a stark contrast between regions, with the northwest and northeast experiencing cool autumn breezes, while Jiangnan and South China continue to endure high temperatures [1] - Experts advise the public in Jiangnan and South China to remain cautious about heat exposure and to avoid prolonged outdoor activities during high-temperature periods, even as the White Dew solar term approaches [1]

Group 1 - The core viewpoint of the articles highlights the return of high temperatures in Hangzhou due to the influence of the subtropical high-pressure system, with temperatures expected to remain between 36-39°C until next week [1][2] - Hangzhou has experienced 33 consecutive days of high temperatures, nearing the historical record for the longest continuous high-temperature period [1] - A significant weather change is anticipated next week, with a drop in temperatures expected as the subtropical high retreats, leading to possible rain and thunderstorms [1][2] Group 2 - The transition from summer to autumn is marked by the arrival of the "Bailu" solar term, indicating a shift in weather patterns and the gradual cooling effect of cold air [2] - The presence of Typhoon "Pipa" has been noted, which is moving towards Japan and may influence weather conditions in China, with potential developments of tropical depressions or typhoons in the Philippines [2]

Group 1 - The core viewpoint of the articles highlights the return of high temperatures in Hangzhou, with the city experiencing a maximum temperature of 37.1℃ and a continuous high-temperature streak of 33 days, nearing the historical record [1] - The forecast indicates that temperatures will remain between 36-39℃ in most areas until next Tuesday, with a potential record-breaking heat expected [1] - A significant weather change is anticipated next week, with a drop in temperatures below 35℃ due to the retreat of the subtropical high-pressure system, leading to rain and thunderstorms [1] Group 2 - The transition from summer to autumn is noted, with the upcoming White Dew solar term marking a shift in weather patterns, as cooler air begins to influence the region [2] - The presence of Typhoon "Pipa" is reported, which is moving towards Japan, while another tropical disturbance near the Philippines may develop into a tropical depression or typhoon, potentially impacting China [2] - The prolonged heat this year is attributed to the leap month in the lunar calendar, resulting in an extended summer period compared to previous years [2]

Group 1 - The subtropical high pressure is weakening, leading to temporary relief from high temperatures in Hangzhou, with maximum temperatures expected to drop to 34℃-35℃ [1] - Thunderstorms and strong convective weather are anticipated due to accumulated unstable energy in the atmosphere, with warnings for short-term heavy rain and strong winds [1] - The high temperature record in Hangzhou has reached 30 consecutive days, marking the second longest heatwave in observation history [2] Group 2 - A rebound in high temperatures is expected starting Thursday, with temperatures potentially reaching 37℃-40℃ across the province [2] - The summer of 2023 has been recorded as the hottest since 1961, with an average national temperature of 22.31℃ [2] - Hangzhou's high temperature streak is only surpassed by the 35-day streak from July 20 to August 23, 2022 [2]

Core Points - Shanghai has broken the historical record for consecutive high-temperature days in August, reaching 44 high-temperature days this year, surpassing the previous record of 24 days set in 1926 [1] - The high-temperature trend is also observed in Jiangsu and Zhejiang provinces, with temperatures reaching as high as 39°C in some areas [5][6] - Meteorological experts attribute the prolonged high temperatures to the abnormal behavior of the subtropical high-pressure system, which has been stable over the Yangtze River Delta region [6] Summary by Sections Shanghai's High-Temperature Records - As of August 30, Shanghai has recorded its 44th high-temperature day, breaking the century-old record [1] - The average number of high-temperature days in August for Shanghai is around 7, with last year's record being 26 days [1] Conditions in Jiangsu and Zhejiang - Zhejiang province has experienced temperatures between 36-39°C, with Hangzhou breaking its own record for consecutive high-temperature days [5] - Jiangsu has issued high-temperature warnings for 15 consecutive days, with many areas exceeding 35°C [6] Meteorological Analysis - The subtropical high-pressure system has been unusually strong and stable, leading to early and prolonged high-temperature days this summer [6] - The system's internal descending airflow prevents moisture from rising and forming clouds, contributing to the clear skies and high temperatures [6] Future Weather Predictions - Forecasts indicate that temperatures will remain high until early September, with a potential for rain to provide some relief [8][9] - The return of high temperatures is expected mid-next week, with temperatures likely to exceed 35°C again [11]

Group 1 - The clear blue sky in Hangzhou on August 28 is attributed to the strong subtropical high pressure, which prevents moisture from rising and forming clouds [2] - The subtropical high pressure leads to a significant increase in temperature, enhancing the air's capacity to hold moisture, resulting in a cloudless sky [2] - Hangzhou has experienced a record-breaking 26 consecutive days of high temperatures from August 3 to 28, marking the highest number of hot days in August's history [2] Group 2 - The weather pattern is expected to remain hot and sunny under the influence of the subtropical high pressure, but a weakening of this system is anticipated starting August 31 due to the impact of a westerly trough [2] - After September 1, the intensity of high temperatures is projected to decrease, with maximum temperatures dropping to between 35°C and 37°C [2] - Residents are advised to take precautions against heat and potential severe weather, including localized heavy rainfall and thunderstorms [2]