Group 1 - The northern regions of China have been experiencing heavy rainfall since July 23, with significant impacts reported in areas such as northern Shaanxi, northern Shanxi, northern Hebei, and northern Beijing, including extreme rainfall events classified as torrential and even extraordinary in some localities [1] - The Central Meteorological Observatory has issued a yellow warning for heavy rain and a flood risk warning for small and medium rivers, indicating ongoing severe weather conditions [1] - The water level in the Chaobai River has reached its highest recorded flood since the reservoir was built in 1959, with a maximum inflow rate of 6,550 cubic meters per second reported [1] Group 2 - The Ministry of Water Resources has initiated emergency flood defense measures, including the deployment of work teams to assist local flood response efforts in key river basins [2] - Beijing has activated a Level IV emergency response for flood defense, while the Beijing Water Authority has initiated a Level III emergency response to manage flood drainage [2] - Shanxi Province has also activated a Level III flood defense response in Dazhou City, with teams sent to oversee flood prevention measures [2]

Group 1 - The strongest rainfall event in southern China this year is expected from May 27 to 29, with significant overlap with previous heavy rainfall periods, leading to high risks of flood disasters [1][2][3] - The Central Meteorological Administration has issued blue and yellow warnings for potential mountain floods and geological disasters in specific regions, indicating a need for real-time monitoring and preventive measures [1][3] - Rainfall intensity is projected to peak on May 28, with areas in Jiangxi, Fujian, and Guangdong experiencing heavy to torrential rain, and some regions may see rainfall amounts approaching historical extremes for May [2][3] Group 2 - The rainfall process is expected to affect various regions including Guizhou, Jiangnan, and Huannan, with specific areas at risk for secondary disasters such as mountain floods and urban flooding [1][3] - Meteorological experts advise the public in affected areas to stay informed about weather updates and to avoid disaster-prone zones during peak rainfall periods [3] - Farmers are encouraged to manage water and fertilizer in early rice fields promptly after the rain to mitigate potential agricultural impacts [3]

Core Points - Guangdong experienced extreme rainfall with 288 towns and streets affected by heavy rain, including a record of nearly 600mm in Chengcun Town, Yangxi County [1][2] - The meteorological department forecasts continued heavy rain from May 19 to 21, with risks of geological disasters and urban flooding [1][2] Summary by Category Rainfall Data - Chengcun Town recorded an extreme cumulative rainfall of 593.1mm, qualifying as a "super heavy rain" event [2] - Four towns recorded over 250mm of rainfall, 66 towns received between 100mm to 250mm, and 218 towns experienced 50mm to 100mm of rainfall [1] Weather Forecast - The Guangdong Meteorological Bureau predicts frequent thunderstorms and localized heavy rain, with wind speeds reaching 6 to 8 levels, and potential for strong convective weather [2] - Areas such as Shaoguan, Qingyuan, Maoming, Yangjiang, and Zhaoqing are expected to experience prolonged rainfall and increased risks of mountain floods and landslides [2]