Group 1 - The core area of rainfall is shifting southward, with heavy rain expected in parts of the Sichuan Basin to the Jianghuai region, including localized heavy downpours [1][2] - The Central Meteorological Observatory forecasts heavy rain in several regions, including southern Jiangsu, northern Shanghai, central Anhui, southeastern Henan, and parts of Hubei and Hunan [1][2] - The public is advised to be cautious of secondary disasters such as mountain floods and mudslides due to the cumulative rainfall in areas like Hubei, Anhui, Jiangsu, and Chongqing [4] Group 2 - High temperatures are prevalent in Jiangnan and South China, with cities like Shanghai, Hangzhou, and Guangzhou experiencing extreme heat [4] - The upcoming week will see frequent high temperatures in Jiangnan and South China, with cities like Hangzhou and Changsha potentially facing 5 to 6 days of high temperatures [4] - Northern regions, including Shanxi and Hebei, are expected to experience increased high temperatures following the cessation of rainfall [4]

Core Points - The arrival of the solar term "Liqiu" (Beginning of Autumn) does not indicate an immediate drop in temperature, as the summer heat remains dominant in Hangzhou [1] - Meteorological standards define autumn as a period when the average daily temperature falls below 22°C for five consecutive days, which is not yet the case in Hangzhou [1] - Historical data shows that the average temperature in Hangzhou during the Liqiu period is around 28°C, with a significant drop to below 21°C expected after the Autumn Equinox [1] Weather Forecast - The subtropical high pressure continues to exert strong control over the weather in Hangzhou, leading to sustained high temperatures [1] - The forecast for the next 3-5 days indicates maximum temperatures reaching between 36°C and 38°C, with some areas potentially exceeding 39°C [1] - Due to rapid temperature increases and unstable energy accumulation, there is a likelihood of scattered afternoon showers or thunderstorms [1]

Core Viewpoint - The recent heavy rainfall in Guangdong is attributed to a combination of meteorological factors, including a low vortex system and the southwest monsoon, leading to significant flooding and related disasters in the region [1][4][5]. Group 1: Causes of Heavy Rainfall - The heavy rainfall is primarily caused by a low vortex system, which acts similarly to a typhoon but is generated over land, creating strong upward airflows that draw in moisture [4]. - The southwest monsoon is providing ample warm and moist air, which fuels the rainfall [4]. - The interaction between the low vortex and the southwest monsoon has been ongoing since early August, leading to continuous heavy rainfall in Guangdong [4]. Group 2: Impact and Consequences - The rainfall has resulted in urban flooding, fallen trees, and even landslides, with cities like Guangzhou, Zhaoqing, and Qingyuan being significantly affected [1][4]. - The phenomenon known as the "train effect" has caused successive thunderstorms to impact the same areas, exacerbating the rainfall intensity [4]. Group 3: Forecast and Future Conditions - Meteorological authorities predict that the heavy rainfall will cease by August 7, as the low vortex moves away from Guangdong [7]. - Following the rain, temperatures are expected to rise, with highs ranging from 34°C to 37°C, as the subtropical high-pressure system regains control [7].

周三（8月6日），又是一个高温天，阳光热烈，气温水涨船高，杭州各地区国家站最高气温均超 35℃，加上高达60%的相对湿度，体感十分闷热难耐，回到熟悉的"中伏"酷暑、暑湿交蒸的状态，甚至 有点"桑拿天"的感觉。 进入八月，"出走"北方的副热带高压逐渐向南推进，在副热带高压的控制下，未来一周杭州的天气 犹如"复制粘贴"，"晴到多云+午后局部雷阵雨"的模式循环放送。由于气温攀升迅速，不稳定能量不断 积聚，在午后最热的时候容易激发局部的强对流天气，注意随身携带雨具，雷雨地区要警惕和防范短时 暴雨，及局地强降水可能引发的次生灾害。 不过，比起"不期而遇"的雷阵雨，未来的天气舞台上，"高温君"才是常驻嘉宾。浙江省气象台周三 发布高温报告，受副热带高压影响，近期我省气温较高，预计周四周五两天全省大部地区日最高气温可 达35-38℃，个别39℃以上。希各有关方面注意做好防暑降温工作。 接下去几天，副高加强控制浙江，各地气温基本稳居在高温线之上，且会越来越高，像衢州、丽水 等地，甚至要"飙"上40℃。 对于杭州而言，阳光持续灼烧，气温节节攀升，目前来看，未来一周的最高气温维持在35℃的高温 线上，尤其是周末两天（9-10日）， ...

Summary of Key Points Core Viewpoint - The recent continuous rainfall in Guangdong has raised questions among residents regarding its intensity, causes, and duration, with significant weather warnings issued across the region [2][3]. Group 1: Rainfall Intensity - Shenzhen issued a citywide red rainstorm warning for the first time since Typhoon "Mangkhut" in 2018, indicating severe weather conditions [3]. - Hong Kong recorded 355.7 millimeters of rain on August 5, breaking the record for the highest daily rainfall in August since 1884 [3]. - Over a 24-hour period, 28 towns in Guangdong experienced extreme rainfall, with the highest recorded at 470.6 millimeters in Huizhou [5]. Group 2: Causes of Rainfall - The rainfall is attributed to a combination of uplift mechanisms and abundant moisture, with a cold vortex acting similarly to a typhoon, creating strong upward motion and drawing in moisture [6][8]. - The southwest monsoon has been a significant contributor, bringing warm, moist air into Guangdong, which, combined with the cold vortex, has led to persistent heavy rainfall [8][10]. Group 3: Comparison with Northern Rainfall - The rainfall in Guangdong differs from that in northern regions, as the latter is influenced by cold air masses and warm moist air converging, while Guangdong's rain is more akin to typhoon rain mechanisms [10][11]. Group 4: Future Weather Outlook - The cold vortex is expected to move out of Guangdong, leading to a decrease in rainfall intensity as the subtropical high pressure pushes the system northward [14]. - After the rain subsides, temperatures in Guangdong are anticipated to rise, transitioning to a hot and humid weather pattern [15][17].

Summary of Key Points Core Viewpoint - The article discusses the weather conditions in Shanghai, highlighting the transition from typhoon effects to high temperatures, with forecasts indicating continued high temperatures and potential thunderstorms in the coming days [1]. Weather Forecast - Shanghai is expected to experience temperatures around 35°C from today until Wednesday, with afternoon short-term rain or thunderstorms [1]. - The highest temperature today is forecasted to reach 35°C, with northern areas experiencing notable short-term precipitation [1]. Weather Dynamics - The first half of the week will see high temperatures in Shanghai, which will accelerate water vapor evaporation, leading to cloud formation and energy release, thus enhancing the potential for thunderstorms and heavy rain [1]. - In the latter half of the week, Shanghai will be positioned at the edge of the subtropical high pressure, making it susceptible to triggering or intensifying precipitation [1].

Group 1 - The weather in China is currently complex, with both high temperatures and heavy rainfall expected to persist in various regions [1][2] - From August 2 to 6, northern regions will experience significant rainfall, with localized areas receiving 100 to 150 millimeters of rain [1] - Southern regions, particularly in Guangdong, Guangxi, and southern Guizhou, are forecasted to face heavy rainfall, including possible extreme downpours [2] Group 2 - The high temperatures are expected to affect areas such as southern North China, Huanghuai, Jianghan, and parts of Sichuan and Shaanxi, with temperatures reaching 35°C to 38°C, and some areas exceeding 40°C [2][3] - The agricultural sector is warned about the high-temperature risks affecting rice crops, with recommendations for temperature regulation and fertilization to mitigate impacts [3] - The high temperatures pose risks to transportation and public health, with road surface temperatures potentially reaching 62°C to 74°C in certain regions, necessitating caution for drivers [3]

自7月23日以来，北方多地持续遭受强降水影响，内蒙古、河北北部、北京及太行山前区域成为强 降水核心区。"高温和强降雨多发、分散、影响范围大是近期全国天气形势的特点。"中央气象台首席预 报员张涛介绍，目前，一条西南至东北向雨带稳定维持在华北北部和东北中南部，给内蒙古东南部、河 北北部、北京、辽宁、吉林等地带来集中降雨。雨带目前正缓慢向南压且强度减弱，上述地区降雨强度 也将明显减弱。 截至7月26日，我国北方共有19个站点打破同期历史月极值，其中13个站点刷新历史极值。在此轮 降水过程期间，陕西北部、内蒙古、河北北部、北京等地累计降水量普遍超过100毫米，石家庄北部、 保定西部等区域累计降水量突破400毫米，充分展现此次过程的极端性。 近期，我国天气形势复杂多变，华北地区遭遇连续强降雨天气。目前正值"七下八上"防汛关键期， 全国呈现强降雨与大范围高温天气并存的典型汛期格局。本轮华北降水总体情况如何？未来发展趋势怎 样？公众又该如何有效防范？记者就此采访了相关专家。 未来三天，多雨、大范围高温仍是华北天气主要发展趋势。张涛表示，北方地区将会有两次降雨天 气过程，一是目前华北北部到东北中南部的雨带维持带来叠加降雨；二 ...

周二（7月29日），"复活"后的8号台风"竹节草"逐渐逼近，虽然整体步伐有些缓慢，但是风雨影响 已经抢先"报到"。浙江东部等地率先迎来强降雨，并向全省蔓延，浙江省防指、杭州市防指纷纷将防台 风应急响应提升至Ⅲ级。周三是风雨核心影响时段，"竹节草"即将登陆华东，强风暴雨袭来，威力不容 小觑。 "竹节草"路径北调 周三风雨影响大 台风过后副高增强 高温回归 中央气象台周二18时继续发布台风蓝色预警，今年第8号台风"竹节草"（热带风暴级）的中心周二 17时位于浙江省舟山市东南方向大约230公里的东海南部海面上，中心附近最大风力有8级（20米/ 秒）。 预计，"竹节草"将以每小时10-15公里的速度向北偏西方向移动，强度将有所增强，将于周三白天 在浙江三门到江苏启东一带沿海登陆（23-28米/秒，9-10级，热带风暴级或强热带风暴级），登陆后强 度缓慢减弱,也有可能沿华东近海北上。 从预报来看，台风"竹节草"的走位较此前稍有"北移"，为什么会有这样的调整？其实，这都是因为 天气舞台上多个天气系统在"较劲"。杭州市气象台解释，影响台风"竹节草"的主要因素是在太平洋上的 副热带高压。目前，这个副热带高压"三面受敌"，西北 ...

新华社北京7月29日电 连日来，北京遭遇连续极端强降雨，造成重大灾害。此次降雨有哪些特点？降雨是如何形成的？后续还有哪些需要注意的 情况？专家与相关部门为您一一解读。 降雨有何特点？ 降雨如何形成？ 漫长降雨如何形成？从宏观上看，西太平洋副热带高压是影响我国天气的关键系统，其季节性活动直接关系各地雨季进程。中国气象服务协会会 长许小峰介绍，从整体情况来看，目前正值"七下八上"防汛关键期，副热带高压稳定影响到华北地区，北京已进入强对流天气多发的多雨水时 段。 具体而言，近期北京降雨可分为两个时期。记者梳理北京市气象部门发布的信息，24日至27日期间的降雨，系受副热带高压影响产生。许小峰介 绍，这一时期北方恰有弱冷空气不断南下，与副热带高压边缘暖湿气流交汇，形成降雨带，也就是典型的华北雨季形势。而28日夜间至29日上午 的降雨则是因为受高空槽及台风外围水汽远距离输送影响产生，自西向东给北京带来了相对均匀的大面积降雨。 7月27日在北京市密云区冯家峪镇西庄子村拍摄的河道。新华社记者 鞠焕宗 摄 接下来如何防范？ 气象部门介绍，29日14时30分许，影响北京市的强降雨云团已移出。北京市气象台7月29日14时30分解除 ...