一分鐘報天氣/週三(02/09日) 東北季風減弱溫度漸回升 週五前水氣仍多中北部偶雨

明天天氣如何?

昨晚(07日) 到今晨鋒面通過時全台都下了一些雨,鋒面通過後受東北季風增強影響,中北部溫度下降不少,不過這波冷空氣強度不強,影響時間短,加上有些水氣通過使得雲量偏多,中北部輻射冷卻作用較不明顯,最低溫仍有12.5度,今天(08日)午後整體溫度已經緩緩回升。

明天(09日)東北季風減弱,各地溫度還會繼續回升,預期華南仍有些水氣通過中北部地區,因此天氣仍是多雲或陰天,並有短暫陣雨的機會,相對潮濕、早晚涼的天氣可持續到週四,南部天氣受華南水氣影響較小,天氣變化以雲量增多、高山區偶有短暫雨為主,平地雲量相對較少,夜間有輻射冷卻的作用,日夜溫差較大,晨間有起霧或霾的機會,早晚外出行車時需留意能見度。

週五、六大氣中層的水氣減少,西半部天氣普遍好轉至晴到多雲,環境風向轉為偏東到偏南風,白天回溫明顯,但受台灣東北方低壓波動的局部環流影響,晨間容易起霧的區域可延伸至北部,霧持續的時間也可能較長,行車時都要留意能見度是否轉差;基隆北海岸至宜蘭、花蓮沿岸等地區週五仍是有短暫陣雨的天氣,週六才會好轉。

下個天氣變化時間點為週日,將有鋒面系統接近並通過台灣,受鋒面影響,各地雲量都會增多,預估鋒面主體於週日晚間至下週一清晨通過,期間各地都有降雨機會,中北部雨勢較明顯,鋒面通過後有一小波冷空氣接續南下,溫度又會再度下滑,不過冷空氣強度預估還在東北季風的等級,近期天氣小變化較多,中北部週三、四有些短暫雨的機會,建議可把握週五、六較好的天氣。

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以上氣象由天氣風險 / 柯聿寧 提供