在周四、周五的降水间歇期，河南东部、南部将再现大范围高温，局地气温可能冲击40℃。这种"雨后 骤热"的天气，可能因土壤水分蒸发过快加大作物干旱压力。 台风"剑鱼"正持续搅动我国天气格局，河南本周将直面多重天气挑战——有两轮大范围暴雨，降水间歇 期会遭遇40℃高温，8月25日，省自然资源厅、省气象局联合发布地质灾害气象风险预警。当前正值秋 粮产量形成关键阶段，复杂天气给农业生产带来压力，各地需做好防范。 省气象台最新预测显示，25日、26日及本周末，河南将迎来两轮大范围降水，多地降雨明显。台风"剑 鱼"在影响华南沿海时，其外围云系持续输送水汽，进一步加大了河南的降雨强度和范围。 从监测数据来看，24日8时至25日6时，河南中部已出现分散性大雨或暴雨，对田间作业和作物生长造成 直接影响。 持续降雨也加大了地质灾害风险。25日，省自然资源厅、省气象局联合发布地质灾害气象风险预警：25 日20时至26日20时，南阳西部及北部、洛阳西部、新乡和许昌西北部、三门峡和济源南部及东北部、平 顶山周边区域，地质灾害风险达到黄色预警级别，发生滑坡、泥石流等灾害的概率较高，相关区域需提 前做好排查防范。 针对当前复杂形势，农业气象 ...

Group 1 - The core viewpoint of the articles highlights the severe heatwave affecting Henan, with temperatures expected to rise significantly, prompting health warnings and safety advisories [1][2][4] - The National Health Risk Alert was issued by the National Disease Control and Prevention Bureau and the China Meteorological Administration, marking the first national-level high-temperature health risk warning [4] - The forecast indicates that from July 4, temperatures in central and northern regions may exceed 40°C, with perceived temperatures potentially reaching above 45°C in some areas [2][4] Group 2 - The prolonged high humidity and heat pose health risks, increasing the likelihood of heatstroke and acute episodes of chronic diseases [4] - Specific regions, including northern Jiangsu, central Shandong, and eastern Henan, are identified as having extremely high health risk levels due to heat [4] - The articles emphasize the need for the public to stay informed about weather alerts and to take appropriate measures to mitigate health risks associated with extreme temperatures [4]