北京市升级发布暴雨红色预警

Group 1 - The article reports a red rainstorm warning issued for Beijing, effective from August 4, 2025, at 1:00 PM, indicating severe weather conditions expected in the area [1] - Strong rainfall is anticipated to begin in the afternoon, with the heaviest precipitation occurring between 6:00 PM on August 4 and 5:00 AM on August 5, where some areas may receive over 150 millimeters of rain within 6 hours, and individual locations could exceed 200 millimeters [1] - There is a high risk of natural disasters such as mountain floods, mudslides, and landslides in mountainous and shallow mountainous areas, while low-lying regions are likely to experience water accumulation [1]