尤特外圍雲系北上~降雨機會增多~102/08/11 - 颱風討論

By Tracy
at 2013-08-11T23:17
at 2013-08-11T23:17
Table of Contents
過去兩天尤特颱風如預期的一路向呂宋島逼近~
除了高壓的引導明顯以及強勢壓制之外~
南海的97W跟尤特位於同一個大低壓帶中~
雖然渦度不強~但是環流蠻寬廣的~
對於尤特有一定的吸引力~大低壓中渦度的調整也讓尤特走的比預期要偏西一些~
在良好的環境配合下~尤特本身環流較小的優勢讓它迅速發展~
強度增強的很快~環流也跟著擴大~
不過核心區仍然屬於較中小型的系統~相當集中~
目前尤特已經逼近呂宋島東岸~很快就要登陸了~
預估未來將穿越呂宋島後進入南海~
並且勢必要跟97W的渦度與環流進行合併~
幾個主要氣象單位晚間的主觀路線預報都已經可以看出跟97W合併而出現的微妙變化~
就是在南海北部有一段稍往西折~速度明顯加快的期間~
這一點在先前的文章就就有提到了~97W雖不強~但勢必影響尤特入南海後的動態~
預估尤特仍將趨向粵西至雷州半島一帶沿海~
對港澳地區有一定程度的影響~
但影響最嚴重的地區應該是偏向陽江以西到海南島等地區域~
強度在進入南海並且順利合併97W有重新加強的機會~
侵襲粵西海南等地時仍會是一個相當強的颱風~
以現在的預測看起來~尤特本身對台灣並沒有直接的威脅~
外圍環流則已經逐漸靠近台灣東南部~恆春半島一帶晚間有局部降雨出現了~
預估隨著尤特穿越呂宋島進入南海~明天周一(12號)外圍環流對天氣的影響將較為明顯~
東半部的宜蘭花蓮台東以及恆春半島等地有短暫陣雨~
東南部地區有局部較大雨勢的機會~
西半部位於背風面~要注意午後山區可能有局部熱對流發展並且向西擴散的情況~
不過台灣附近的風勢將增強~對於午後對流的發展會有干擾的作用~
東半部沿海的風浪也將明顯加大~北部地區要注意偏東的強陣風現象~
後天周二(13號)仍然是受到尤特外圍環流的影響~
東半部及恆春半島有短暫陣雨~並且有局部較大雨勢~
西半部為多雲午後有局部熱對流降雨的天氣~
周二晚間以後隨著風向漸轉南風~南部地區的降雨機會將會逐漸提高~
周三(14號)時~尤特應該已經快要登陸粵西沿海了~
隨著高壓勢力北抬讓出的空間~整個季風槽低壓區將跟著尤特一起北上~
台灣附近轉為西南至偏南風~水氣也明顯增多~大氣不穩定~
南部以及東半部地區有短暫陣雨或雷雨~並且要注意局部較大雨勢~
中部北部則是要注意午後熱對流的發展~有出現較大雷雨的機會~
周四(15號)之後台灣將持續籠罩在季風槽低壓帶中~天氣持續不穩定~
由於台灣附近到琉球一帶是位於季風槽東端~西南風跟高壓東南風的輻合旋繞處~
具有較明顯的環境正渦度~可能要注意有新的擾動低壓在台灣以東發展的趨勢~
如果高壓退的較遠~擾動發展的位置就會比較偏東~離台灣較遠~影響也比較小~
反之若是離台灣較近~對天氣的影響也就會比較嚴重~
這一點可能還有待觀察~請大家要保持密切注意~
以上先簡單供參考囉~
--
除了高壓的引導明顯以及強勢壓制之外~
南海的97W跟尤特位於同一個大低壓帶中~
雖然渦度不強~但是環流蠻寬廣的~
對於尤特有一定的吸引力~大低壓中渦度的調整也讓尤特走的比預期要偏西一些~
在良好的環境配合下~尤特本身環流較小的優勢讓它迅速發展~
強度增強的很快~環流也跟著擴大~
不過核心區仍然屬於較中小型的系統~相當集中~
目前尤特已經逼近呂宋島東岸~很快就要登陸了~
預估未來將穿越呂宋島後進入南海~
並且勢必要跟97W的渦度與環流進行合併~
幾個主要氣象單位晚間的主觀路線預報都已經可以看出跟97W合併而出現的微妙變化~
就是在南海北部有一段稍往西折~速度明顯加快的期間~
這一點在先前的文章就就有提到了~97W雖不強~但勢必影響尤特入南海後的動態~
預估尤特仍將趨向粵西至雷州半島一帶沿海~
對港澳地區有一定程度的影響~
但影響最嚴重的地區應該是偏向陽江以西到海南島等地區域~
強度在進入南海並且順利合併97W有重新加強的機會~
侵襲粵西海南等地時仍會是一個相當強的颱風~
以現在的預測看起來~尤特本身對台灣並沒有直接的威脅~
外圍環流則已經逐漸靠近台灣東南部~恆春半島一帶晚間有局部降雨出現了~
預估隨著尤特穿越呂宋島進入南海~明天周一(12號)外圍環流對天氣的影響將較為明顯~
東半部的宜蘭花蓮台東以及恆春半島等地有短暫陣雨~
東南部地區有局部較大雨勢的機會~
西半部位於背風面~要注意午後山區可能有局部熱對流發展並且向西擴散的情況~
不過台灣附近的風勢將增強~對於午後對流的發展會有干擾的作用~
東半部沿海的風浪也將明顯加大~北部地區要注意偏東的強陣風現象~
後天周二(13號)仍然是受到尤特外圍環流的影響~
東半部及恆春半島有短暫陣雨~並且有局部較大雨勢~
西半部為多雲午後有局部熱對流降雨的天氣~
周二晚間以後隨著風向漸轉南風~南部地區的降雨機會將會逐漸提高~
周三(14號)時~尤特應該已經快要登陸粵西沿海了~
隨著高壓勢力北抬讓出的空間~整個季風槽低壓區將跟著尤特一起北上~
台灣附近轉為西南至偏南風~水氣也明顯增多~大氣不穩定~
南部以及東半部地區有短暫陣雨或雷雨~並且要注意局部較大雨勢~
中部北部則是要注意午後熱對流的發展~有出現較大雷雨的機會~
周四(15號)之後台灣將持續籠罩在季風槽低壓帶中~天氣持續不穩定~
由於台灣附近到琉球一帶是位於季風槽東端~西南風跟高壓東南風的輻合旋繞處~
具有較明顯的環境正渦度~可能要注意有新的擾動低壓在台灣以東發展的趨勢~
如果高壓退的較遠~擾動發展的位置就會比較偏東~離台灣較遠~影響也比較小~
反之若是離台灣較近~對天氣的影響也就會比較嚴重~
這一點可能還有待觀察~請大家要保持密切注意~
以上先簡單供參考囉~
--
Tags:
颱風
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