进入盛夏“桑拿天” 周末气温直飙40℃

Group 1 - The core viewpoint of the articles highlights the unprecedented intensity and duration of high-temperature weather affecting various regions in China, particularly in Jiangnan, with Zhejiang, Shanghai, and Fujian experiencing extreme heat [1][2] - Hangzhou has recorded its 10th high-temperature day this year, with a significant increase of 9 days compared to the same period last year, indicating a more severe heatwave this summer [1] - The meteorological forecast predicts that temperatures in Hangzhou could reach around 40°C from July 4 to July 6, with nighttime lows approaching 30°C, marking a continuous high-temperature period [1][2] Group 2 - The current heatwave is described as the strongest and most extensive in 2023, affecting both northern and southern regions of China, with a particular focus on the Jiangnan area [2] - The potential for typhoons developing in the Northwest Pacific is noted, with one system (98W) expected to possibly evolve into a tropical storm by July 4, which could bring some relief from the heat if it approaches the East China Sea [2] - The uncertainty surrounding the typhoon's path and its potential cooling effects on the ongoing high temperatures is emphasized, indicating that the situation will be closely monitored [2]