天秤颱風~101/08/21 - 颱風討論
By Ivy
at 2012-08-21T16:19
at 2012-08-21T16:19
Table of Contents
一個白天過去~天秤如預期的持續北上返鄉之路~
目前已經差不多回到前身擾動的出生地附近了~像這樣轉了一大圈回到原點還真有趣~
整個環境變化不大~大致都還在預期中~
http://ppt.cc/9KYU
如圖所示~
中低空主要的東西向引導氣流位置仍是從石垣島附近走向西北西經北部海面後北轉~
副高壓則有繼續往西推擠的現象~這也使得天秤過去的移動速度較快~
南海的反氣旋仍在盡責的阻擋天秤馬上偏西~
但位置已經比早上要往南移動~阻擋的力量會越來越小~
東邊推西邊讓的結果~颱風只能逐漸往西偏轉~
從外觀上來看~颱風的軸線也有開始逐漸往北北西-南南東傾斜的趨勢~
左側旋臂慢慢向西北擴展~又戲稱為"伸出左手"~
這都是颱風開始又出現西分量偏轉的跡象~
當然照現在的情況來看~不會轉得那麼快那麼硬才對~
預估仍是要過22N之後~開始慢慢偏向西北~
之後偏西的分量持續增加~再轉向西北西到偏西方向移動~
轉彎的過程速度會稍放慢~轉向後則有再加速的可能~
今晚颱風外圍有些雲層會靠近東北部東部沿海~有機會帶來一些降雨~
不過真正比較明顯的影響應該還是要從明天開始~
最後一提的是這個颱風的結構集中~而且很有意思的是北半圈比較強~
跟以往南半圈較強的夏季颱風不太一樣~
未來登陸花東後~北半圈對台灣的影響很值得注意~
登陸後穿越台灣進入西半部~結構重整的好的話~對中部以南地區也會帶來強盛南風影響~
至於會不會在經過台灣後被布拉萬颱風牽制住~開始滯留甚至不規則移動~
這也是接下來預報所要觀察的重點~
簡單供參考囉~
--
目前已經差不多回到前身擾動的出生地附近了~像這樣轉了一大圈回到原點還真有趣~
整個環境變化不大~大致都還在預期中~
http://ppt.cc/9KYU
如圖所示~
中低空主要的東西向引導氣流位置仍是從石垣島附近走向西北西經北部海面後北轉~
副高壓則有繼續往西推擠的現象~這也使得天秤過去的移動速度較快~
南海的反氣旋仍在盡責的阻擋天秤馬上偏西~
但位置已經比早上要往南移動~阻擋的力量會越來越小~
東邊推西邊讓的結果~颱風只能逐漸往西偏轉~
從外觀上來看~颱風的軸線也有開始逐漸往北北西-南南東傾斜的趨勢~
左側旋臂慢慢向西北擴展~又戲稱為"伸出左手"~
這都是颱風開始又出現西分量偏轉的跡象~
當然照現在的情況來看~不會轉得那麼快那麼硬才對~
預估仍是要過22N之後~開始慢慢偏向西北~
之後偏西的分量持續增加~再轉向西北西到偏西方向移動~
轉彎的過程速度會稍放慢~轉向後則有再加速的可能~
今晚颱風外圍有些雲層會靠近東北部東部沿海~有機會帶來一些降雨~
不過真正比較明顯的影響應該還是要從明天開始~
最後一提的是這個颱風的結構集中~而且很有意思的是北半圈比較強~
跟以往南半圈較強的夏季颱風不太一樣~
未來登陸花東後~北半圈對台灣的影響很值得注意~
登陸後穿越台灣進入西半部~結構重整的好的話~對中部以南地區也會帶來強盛南風影響~
至於會不會在經過台灣後被布拉萬颱風牽制住~開始滯留甚至不規則移動~
這也是接下來預報所要觀察的重點~
簡單供參考囉~
--
Tags:
颱風
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