Group 1 - The Beijing Water Authority and Meteorological Bureau issued a yellow warning for mountain flood disasters, indicating a high likelihood of such events in specific districts from August 19 to August 21 [1] - The Beijing Meteorological Station upgraded the yellow rainstorm warning, forecasting heavy rainfall with hourly rates exceeding 50 mm and total accumulations potentially reaching 150 mm in some areas [4] - Citizens are advised to stay informed about weather alerts, reduce travel during the rain, and avoid outdoor activities in vulnerable areas [6] Group 2 - A yellow lightning warning was issued, predicting thunderstorms with short-term heavy rainfall and gusts of wind up to 7 levels in certain areas [8] - Precautions include securing windows and doors, avoiding the use of electrical appliances during thunderstorms, and being aware of potential secondary disasters like landslides and flooding [10][11]

Summary of Key Points Core Viewpoint - Beijing is experiencing frequent rainfall from August 19 to the following days, with significant rainfall expected, including thunderstorms and potential heavy rain in certain areas [1] Weather Conditions - Strong rainfall began at 3 AM, affecting areas such as Fangshan, Mentougou, Fengtai, Shijingshan, Haidian, and Chaoyang, with some regions experiencing thunderstorms and short-term winds of 6 to 7 levels [1] - The average rainfall from 3 AM to 6 AM was 12.9 mm across the city, with an average of 26.2 mm in urban areas, and the maximum recorded rainfall in Fangshan reached 102.3 mm [1] Forecast and Warnings - The meteorological department predicts continued rainfall, with moderate to heavy rain expected, and some areas may experience extreme rainfall levels, accompanied by thunderstorms [1] - Current weather warnings include yellow alerts for heavy rain and thunderstorms, and blue alerts for strong winds, indicating significant impacts on morning traffic [1]

Weather Alerts - The Central Meteorological Observatory issued a blue rainstorm warning, predicting heavy rain in various regions including Inner Mongolia, Shanxi, Hebei, and Guangdong, with localized areas experiencing extreme rainfall of 100-150 mm [1] - A blue warning for severe convective weather was also issued, forecasting thunderstorms with wind speeds exceeding 8 levels and hail in regions such as Inner Mongolia and Shandong, with hourly rainfall potentially exceeding 50 mm in some areas [4] - A yellow heat warning was announced, indicating high temperatures of 35-39°C in regions like Huanghuai and Jiangnan, with some areas possibly reaching above 40°C [8] Defense Guidelines - Government and relevant departments are advised to prepare for rainstorm and severe weather conditions, ensuring safety measures are in place for schools and transportation [3][7] - Outdoor activities should be minimized, and protective measures should be taken for vulnerable populations during high-temperature conditions [10] - Drainage systems in urban and agricultural areas should be checked to prepare for potential flooding and other weather-related disasters [3][7]

来源：中央气象台 中央气象台 8月17日06时 继续 发布暴雨蓝色预警： 预计， 8月17日08时至18日08时 ， 内蒙古中东部、山西东南部、河北南部、山东中北部、青海中北部、四川盆地西 部、广西东南部沿海、广东南部沿海、海南岛、台湾岛南部等地 部分地区有大到暴雨 ，其中， 广东西南部沿海等地局地 有大暴雨（100～150毫米） 。上述部分地区伴有短时强降水（最大小时降雨量20～50毫米，局地可超过70毫米） ，局 地有雷暴大风等强对流天气 。 防御指南： 1.政府及相关部门按照职责做好防暴雨准备工作； 2.学校、幼儿园采取适当措施，保证学生和幼儿安全； 3.驾驶人员应当注意道路积水和交通阻塞，确保安全； 4.检查城市、农田、鱼塘排水系统，做好排涝准备。 防御指南： 1.政府及相关部门按照职责做好防短时暴雨、防雷、防大风准备工作，气象部门做好人工防雹作业准备 ； 2.户外行人和工作人员减少户外活动，注意远离棚架广告牌等搭建物 ； 3.驱赶家禽、牲畜进入有顶蓬的场所，关好门窗加固棚舍 ； 4.相关水域水上作业和过往船舶采取回港规避或者绕道航行等积极应对措施，工地注意遮盖建筑物资，妥善安置易受暴雨、风雹影响 的 ...

Core Viewpoint - The Central Meteorological Administration has issued multiple weather warnings including strong convective weather, typhoon, and heavy rain alerts, indicating severe weather conditions expected in various regions of China from August 13 to August 14, 2023 [1][5][14]. Group 1: Strong Convective Weather Warning - From August 13, 08:00 to August 14, 08:00, areas in southeastern Inner Mongolia, northern and western Northeast China, northern Jiangsu and Anhui, and eastern South China are expected to experience thunderstorms with wind speeds of 8 or higher, with some regions in Heilongjiang, western Liaoning, southern Fujian, and eastern Guangdong potentially seeing winds exceeding 10 [1]. - Short-term heavy rainfall is anticipated in several regions, with hourly rainfall exceeding 20 mm, and areas in southern Fujian and eastern Guangdong may see hourly rainfall exceeding 50 mm, with maximum amounts possibly reaching over 70 mm [1]. Group 2: Typhoon Warning - Typhoon "Yangliu" has intensified to a strong typhoon level, with its center located approximately 170 kilometers southeast of Taitung City, Taiwan, with maximum wind speeds of 14 levels (42 m/s) and a minimum central pressure of 955 hPa [5]. - The typhoon is expected to move northwest at a speed of 25-30 km/h, making landfall on the southeastern coast of Taiwan around noon on August 13, and will subsequently enter the Taiwan Strait, making landfall again in the coastal areas between Xiamen, Fujian, and Shantou, Guangdong during the night of August 13 to early morning of August 14 [5]. Group 3: Heavy Rain Warning - From August 13, 08:00 to August 14, 08:00, regions including central Heilongjiang, western Jilin, western Liaoning, southern Henan, central Hubei, northern Jiangsu, western Yunnan, eastern Guangdong, and eastern and southern Fujian are forecasted to experience heavy to torrential rain, with localized areas in eastern and southern Taiwan potentially seeing extreme rainfall of 250-390 mm [14]. - Some areas may experience short-term heavy rainfall with maximum hourly rainfall between 20-50 mm, and localized regions may exceed 70 mm, accompanied by thunderstorms and strong winds [14].

Core Points - The Central Meteorological Administration continues to issue yellow rainstorm warnings, predicting heavy to torrential rain in various regions including central Heilongjiang, western Jilin, and southern Henan from August 13 to 14, with localized extreme rainfall expected in southeastern Fujian and eastern Guangdong [1] - Typhoon "Yangliu" is forecasted to strengthen and make landfall on the southeastern coast of Taiwan around noon on August 13, with maximum wind speeds reaching up to 48 meters per second [4][6] - The government and relevant departments are advised to take necessary precautions against heavy rain and typhoon impacts, including traffic management and emergency evacuations [5][7][15] Weather Warnings - Yellow warnings for heavy rain and strong convective weather have been issued, with expectations of severe thunderstorms and hail in regions such as southeastern Inner Mongolia and northern Beijing, with wind speeds potentially exceeding 11 levels [12][15] - Specific areas are predicted to experience short-term heavy rainfall, with hourly rainfall exceeding 50 millimeters in parts of Hebei and northern Beijing [12] Emergency Measures - Authorities are instructed to ensure proper drainage systems are in place and to implement necessary flood control measures in urban and agricultural areas [5][15] - Recommendations include halting outdoor activities, securing loose structures, and ensuring vulnerable populations are relocated to safe areas during the typhoon [8][15]

Group 1 - Beijing Meteorological Station issued a blue rainstorm warning, predicting heavy rainfall from August 12 to August 13, with hourly rainfall exceeding 30 mm and total rainfall over 50 mm in 6 hours [1] - The Beijing Flood Control Office activated a level four emergency response at 7:45 AM on August 12, urging relevant units to implement flood prevention measures [1] - A blue wind warning was also issued, forecasting short-term winds of 7 to 8 levels in most areas and gusts exceeding 10 levels in mountainous regions from August 12 to August 13 [1] Group 2 - The Beijing Meteorological Bureau indicated that from August 14 to August 17, thunderstorms and rain showers are expected, with risks of secondary disasters such as flash floods and landslides in mountainous areas [2]

近期，川渝至苏皖一带降雨频繁，多地出现强降雨。气象监测显示，9日以来，四川东部、重庆、湖北、湖南西北 部、安徽中北部、江苏中北部及河南中南部等地普遍出现50～100毫米降水，部分地区累计降雨量有150～200毫米， 四川成都、德阳等局地达253～349毫米。 央视网消息：据中央气象台消息，今明两天，重庆、湖北、湖南、安徽、江苏等这一带降水仍将持续。另外，今年第 11号台风"杨柳"未来将保持西行趋势，逐步靠近台湾以东洋面，东南沿海地区的公众需要关注其动向。 预计今明两天，雨带依然会维持在川渝至苏皖一带，四川、重庆、贵州北部、云南北部、湖北、湖南北部、安徽、江 苏等地部分地区仍有暴雨或大暴雨，局地有特大暴雨。其中今天，四川东部和南部、重庆、贵州中西部和东北部、云 南北部、湖北东部和南部、湖南西北部、苏皖中部等地部分地区将有大到暴雨，重庆中东部、贵州东北部、湖北西南 部、湖南西北部、江苏中部等局地有大暴雨，重庆东南部、湖南西北部等局地有特大暴雨（250～280毫米）；上述部 分地区伴有短时强降水、雷暴大风或冰雹天气。此外，内蒙古东部、河北西北部等地部分地区将有8级以上雷暴大风 或冰雹等强对流天气，最大风力可达11级 ...

Core Points - The article discusses the types and significance of meteorological disaster warning signals issued by the meteorological department, including their classification and the actions the public should take upon receiving these warnings [2][3][4]. Group 1: Types of Warnings - Meteorological disaster warnings are categorized into three types: meteorological disaster warnings, meteorological disaster warning signals, and meteorological disaster risk warnings [2]. - Meteorological disaster warnings are aimed at government and relevant department officials, with a lead time of 12 to 72 hours [2]. - Meteorological disaster warning signals are designed for both government and the public, featuring a simplified icon and color-coded levels (red/orange/yellow/blue) with defense guidelines, typically issued with a lead time of 0 to 12 hours [2][3]. Group 2: Warning Levels - The warning signals are color-coded: blue (level 4, general), yellow (level 3, relatively serious), orange (level 2, serious), and red (level 1, particularly serious) [3]. - Special attention is required when orange or red warnings are issued for severe weather events such as strong winds or heavy rain [3]. Group 3: Public Response to Warnings - Upon receiving a warning, individuals should identify the type and level of the warning and act accordingly, as warnings are issued at the local level [4]. - In the event of a red rainstorm warning, the public is advised to minimize outdoor activities, and local authorities will implement emergency measures [5]. - Residents in vulnerable areas, such as mountains or near rivers, should evacuate to safe locations, and households in flood-prone areas should take precautions like placing flood barriers [5][6].

Core Viewpoint - The Shandong Meteorological Bureau has issued a yellow rainstorm warning and upgraded the marine gale warning to orange due to the impact of a cyclone, predicting heavy rainfall and strong winds across the province from August 8 to 9 [1] Weather Forecast - Heavy rain to torrential rain is expected in most areas of Shandong, with average precipitation of 40-60 mm and maximum hourly rainfall of 60-100 mm [1] - Specific cities such as Dezhou, Binzhou, Dongying, Qingdao, and Yantai may experience extreme rainfall, with localized areas receiving 100-150 mm, and some areas potentially reaching 200-300 mm [1] Wind Conditions - Wind strength is expected to increase from the night of August 8 to the night of August 9, with gusts in the central Yellow Sea reaching 9-10 levels and gusts above 11-12 levels [1] - The Bohai Sea is forecasted to have gusts of 7-8 levels, with gusts reaching 9-10 levels, while the Bohai Strait and northern Yellow Sea will see gusts of 6-7 levels, reaching 8-9 levels [1] Risk Management - High risks of secondary disasters such as mountain floods, geological hazards, urban flooding, and agricultural waterlogging are anticipated due to the intensity and accumulation of rainfall [1] - The adverse effects of heavy rain and strong winds on transportation, outdoor work, communication facilities, temporary structures, and marine production require enhanced preventive measures [1] - Meteorological departments will closely monitor the evolving weather situation and provide timely updates on forecasts and warnings [1]