天氣概況~2011/06/14
昨天持續是一個午後山區有熱對流發展再擴散到平地的天氣型態~
由於氣流是偏向西南風的關係~對流大多沿著山脈往東北移動~
氣流繞山後的輻合點也大致在東北部的北宜山區一帶~
連續兩天都是以北宜山區還有宜蘭平原的降雨最為明顯~
今天看起來大環境的風向似乎還是差不多~
上午各地天氣晴朗~午後山區開始有熱對流發展並且向東北移動擴散~
主要的降雨應該會出現在中北部山區~以及台北基隆宜蘭等地的平地上~
南部山區也有局部熱對流發展的機會~
西半部平地以及花東地區午後降雨的可能性仍不大~
但仍然提醒大家下午出門要多留意實際天氣以及雷達上的變化~
最好還是能攜帶雨具~前往山區或溪流邊活動要多加小心~
另外就是要做好防曬~不要直接曝曬陽光超過10~15分鐘以免曬傷~
溫度部份持續高溫悶熱~各地高溫可能來到33~35度左右~
如果這種情況持續下去的話~今年6月各地的均溫似乎會有破紀錄的可能~
目前來看接下來3~4天可能還是沒有太大的變化~
上午晴朗炎熱~午後山區有熱對流發展的典型夏季天氣還會持續~
風向持續偏南到西南風~因此平地的午後降雨可能也還是集中在北部東北部等地~
要有改變就必須有颱風或擾動等系統靠近~
目前在南海經菲律賓到關島附近的季風槽內已經逐漸有擾動漩渦轉起來了~
昨天還在菲律賓南部的擾動94W目前已經進入南海南部~
並且有跟越南東南海面另一個擾動95W合併的趨勢~
預估兩者將逐漸合而為一~同時未來會順著副高壓邊緣往西北移動~
不過南海的垂直風切還是很明顯~對於這個擾動的發展有所阻礙~
對台灣來說比較需要注意的反而是季風槽東端的部份~
也就是在菲律賓東南方海面~未來可能有新的擾動出現建立~
季風槽端點的正渦度環境會更好~一但有LLCC出現後~發展的應該會頗快~
而且順著高壓往菲律賓東方到台灣東南方靠近的可能性也不低~
因此在本島天氣比較單調的情況下~大家不妨多留意一下南邊這些擾動的發展~
以上簡單供參考囉~
--
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