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寒潮

一夜入冬跌18℃ 中国发布寒潮预警

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责任编辑: 国际小编

（北京2日综合电）中国中央气象台2日上午发布寒潮蓝色预警，这是今年下半年首个寒潮预警，也是2010年中央气象台正式启用预警发布机制以来，下半年最早发布的寒潮预警。

据中央气象台消息，强冷空气于2日至6日影响中东部大部分地区，带来大风和强降温天气。中央气象台2日上午发布寒潮蓝色预警，这也是今年下半年首个寒潮预警。

由于中东部大部分地区前期气温较往年同期明显偏高，南方9月30日以来出现较大范围高温天气，且将持续到4日，目前有多个网站最高气温突破历史同期最大值，受到这次强冷空气影响，多个省份将出现剧烈降温。

寒潮预警

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预计2日下午2时至6日下午8时，中东部大部分地区气温普遍下降摄氏8至12度，内蒙古中东部、东北地区、陕西大部、山西南部、河南、山东南部、江苏、安徽、湖北、湖南北部、江西北部、浙江北部等地降温摄氏12至16度，内蒙古中部、黑龙江东部、吉林东部、河南南部、湖北、安徽中北部、江苏中北部等地部分地区骤降幅度可达18度或以上。

据中国气象网2日资料，寒潮是一种大规模强冷空气活动过程，可造成大范围急剧降温、大风和雨雪天气，对农业、牧业、交通、电力和人体健康有较大影响。

中国天气网气象分析师闵裕秋说，寒潮是冷空气的一种，不过并非所有冷空气都是寒潮，寒潮是冷空气中的王者；根据强弱程度，中国将冷空气分为4个等级，分别为弱冷空气、较强冷空气、强冷空气和寒潮。

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寒潮

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