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强劲冷锋赶走秋老虎 美国中部与东岸将大幅降温
文章来源: 星岛日报 于
2023-10-05 14:22:34
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气象专家预测,一股强劲冷锋将笼罩广泛区域,导致中部和东岸入秋后首次明显降温,温差可达到35度,南部数以百万民众则可暂时摆脱炎热天气。
CNN报道,两股冷空气从4日起横扫中部,料于6日扩散到东部并持续至周末,期间各地的天气将有巨大变化。首道冷锋在4日和5日期间,将从大平原和中西部地区往外延伸,终止明尼苏达、密歇根等地从本月初开始的高温现象。其中明尼阿波利斯1月录得破纪录的90多度后,到了4日就只有60度以下。
第二道冷锋的威力更加强大,预料会让中部和东部进入真正的秋季气候。冷锋在5日到8日期间,将覆盖东岸2/3的地区,加拿大的冷空气亦将南下,但与此同时夏季热浪仍然发挥作用,因此五大湖区和东北部地区的温度,仍将比10月正常水平高出10到15度。其中底特律、克利夫兰等地4日料有80多度,但到了8日可能跌破50度,费城和纽约市经历4日的80度高温后,8日也会录得60度。
两股冷锋掠过时,区内的夜间温度也将急剧下降,预计在7日早晨,中北部和中西部地区的低温可能在30度到50度之间,到了8日早晨东北部地区也会降温。此外,北达科他、明尼苏达和威斯康辛等地区可能出现本季首次霜冻,当地温度将降至30度左右。
冷空气和湿热夏季空气相逢将带来多雨水,暴风威胁将从南部平原延伸到中西部,德州等地料于周中出现风暴天气,东北部地区可能在周末出现大雨。
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