水利部发布凌情通报称，黄河内蒙古河段三湖河口站断面附近15日15时30分首次出现封河，封河长度4千米。
受强冷空气过程影响，黄河内蒙古河段今冬首次出现封河，封河长度4千米，首封日期较常年偏晚12天。
目前，黄河已进入封河关键期，凌情总体平稳，未发生较大险情。
记者：李云平
报道员：王丽娜、王泽浩、贾甜
新华社音视频部制作
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