红色预警意味着什么？解密中国天气预警体系
In June 2024, China's meteorological authority issued the first red alert of the year as torrential rains caused severe flooding. This top-level warning is part of a four-tier, color-coded system designed to inform the public about dangerous weather. Understanding how this system works reveals why such an alert demands immediate attention.
China's warning system, established in 2007 by the China Meteorological Administration, uses four colors: blue, yellow, orange, and red. Blue signals the lowest threat, while red represents the most extreme. Each color corresponds to specific criteria, such as rainfall amount or wind speed. A red rainstorm alert means more than 100 millimeters of rain is expected within three hours. It also indicates that heavy rain will continue and cause severe flooding. The system covers hazards like typhoons, heatwaves, and blizzards, providing a unified language for emergencies.
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