周末注意午後雷雨~2014/07/25 - 颱風討論
By Hedda
at 2014-07-26T00:05
at 2014-07-26T00:05
Table of Contents
雖然颱風已經遠颺,但是太平洋高壓今天還沒有完全的西伸過來,
台灣位於高壓邊緣,順著南風北飄上來的水氣仍然存在,
中部以南地區一早就出現了雷雨現象,還好大部分的對流是在海上通過,
只有邊緣掠過中南部上空,造成下雨的情況,
中部以北地區則是午後出現了大雷雨,昨天原本預期會下結果沒下,
今天又加上了弱的高空冷心低壓進入巴士海峽,大氣不穩定度更高的情況下,
終於發生了明顯的午後雷雨,降雨量大而且持續時間長,從下午一直下到晚上,
目前看起來太平洋高壓正在繼續西伸,
明天會逐漸進入台灣上空,後天還會更往西伸展一些,
台灣附近風向漸轉為東南風到偏東風,
天氣型態將更偏向典型的夏季午後雷雨,
東半部有零星的地形降雨,西半部午後在山區有熱對流發展,並且向西部平原擴散,
中午過後出門的話還是要記得攜帶雨具,並且注意天氣變化的情況,
山區仍有可能出現比較大的雨勢,到山區活動要多加小心,
溫度偏高,各地高溫可達33~35度以上,外出要做好防曬,並且多補充水分預防中暑,
菲律賓東南方到關島附近是一大片的季風槽低壓區,
當中的兩個熱帶擾動96W跟98W正在互相牽制中,
預估兩者必須整合,然後才有比較明顯的發展機會,
未來這兩天可以來觀察一下兩者整合的狀況,等到環流中心確立後,
再來預估未來的動態跟發展才會比較準確,
周末期間,甚至到下周的前半,對台灣都還沒有太明顯的影響,
但是下周後半的天氣就跟這些擾動有很大的關係了,變動性很高,
以上先簡單供參考囉~
--
台灣位於高壓邊緣,順著南風北飄上來的水氣仍然存在,
中部以南地區一早就出現了雷雨現象,還好大部分的對流是在海上通過,
只有邊緣掠過中南部上空,造成下雨的情況,
中部以北地區則是午後出現了大雷雨,昨天原本預期會下結果沒下,
今天又加上了弱的高空冷心低壓進入巴士海峽,大氣不穩定度更高的情況下,
終於發生了明顯的午後雷雨,降雨量大而且持續時間長,從下午一直下到晚上,
目前看起來太平洋高壓正在繼續西伸,
明天會逐漸進入台灣上空,後天還會更往西伸展一些,
台灣附近風向漸轉為東南風到偏東風,
天氣型態將更偏向典型的夏季午後雷雨,
東半部有零星的地形降雨,西半部午後在山區有熱對流發展,並且向西部平原擴散,
中午過後出門的話還是要記得攜帶雨具,並且注意天氣變化的情況,
山區仍有可能出現比較大的雨勢,到山區活動要多加小心,
溫度偏高,各地高溫可達33~35度以上,外出要做好防曬,並且多補充水分預防中暑,
菲律賓東南方到關島附近是一大片的季風槽低壓區,
當中的兩個熱帶擾動96W跟98W正在互相牽制中,
預估兩者必須整合,然後才有比較明顯的發展機會,
未來這兩天可以來觀察一下兩者整合的狀況,等到環流中心確立後,
再來預估未來的動態跟發展才會比較準確,
周末期間,甚至到下周的前半,對台灣都還沒有太明顯的影響,
但是下周後半的天氣就跟這些擾動有很大的關係了,變動性很高,
以上先簡單供參考囉~
--
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颱風
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