天秤颱風~101/08/25 - 颱風討論
By Leila
at 2012-08-25T21:58
at 2012-08-25T21:58
Table of Contents
今晚還是簡單寫一下就好~
1.天秤今天一天結構逐漸重整~
從汕頭雷達觀察~眼牆已經再度趨於完整~威力會慢慢加強回來~
在有利的大氣環境下~很有可能會再回到中度颱風等級~
2.今天白天天秤速度已經明顯減慢下來~布拉萬的開始對它有"牽制"作用~
是牽制而不是牽引~因為還不到會造成牽引的時間點~
東北頂頭風的效果也慢慢出現~從傍晚以後天秤開始慢慢轉往西南西移動~
同樣由汕頭雷達觀察~往南的分量似乎有增加的趨勢~整體移動會緩慢往南修正~
3.再來就要觀察大概從明晚開始~布拉萬對天秤的牽引作用如何~
目前的看法跟各家的預測差不多~往南掉到大約接近20N以北時會逐漸往東北東轉~
到下周一(27號)~隨著布拉萬往東海黃海北上~天秤也會逐漸跟著北偏~
北偏的角度大~時間早的話~不能排除有直撲南部陸地的可能~
北偏的角度稍小~時間稍晚的話~有可能掠過恆春附近後順著東岸北上~
如果轉的角度可以更小~時間更晚~對台灣的威脅也才會越輕微~
4.明天台灣仍位於天秤跟布拉萬之間~兩颱風的外圍氣流交會~風向紊亂~
天氣狀態仍不是很穩定~要多注意雷達上降雨系統的移動跟變化情況~
午後山區有熱對流發展的可能~局部雨勢會比較大~
5.布拉萬過去一段時間中心呈現"跳舞狀"正弦擺動~也就是忽西忽北~
除了是因為北側跟東側高壓引導力量互相拉距造成的以外~
颱風本身的雙眼結構~小眼繞大眼運動也是一個原因~
北側高壓正逐漸北抬~且有慢慢東退的跡象~
東側高壓則逐漸加強~在颱風以東往南伸展~
因此布拉萬明天越過琉球後~方向上仍預估會逐漸北偏~
以上簡單供參考囉~
--
1.天秤今天一天結構逐漸重整~
從汕頭雷達觀察~眼牆已經再度趨於完整~威力會慢慢加強回來~
在有利的大氣環境下~很有可能會再回到中度颱風等級~
2.今天白天天秤速度已經明顯減慢下來~布拉萬的開始對它有"牽制"作用~
是牽制而不是牽引~因為還不到會造成牽引的時間點~
東北頂頭風的效果也慢慢出現~從傍晚以後天秤開始慢慢轉往西南西移動~
同樣由汕頭雷達觀察~往南的分量似乎有增加的趨勢~整體移動會緩慢往南修正~
3.再來就要觀察大概從明晚開始~布拉萬對天秤的牽引作用如何~
目前的看法跟各家的預測差不多~往南掉到大約接近20N以北時會逐漸往東北東轉~
到下周一(27號)~隨著布拉萬往東海黃海北上~天秤也會逐漸跟著北偏~
北偏的角度大~時間早的話~不能排除有直撲南部陸地的可能~
北偏的角度稍小~時間稍晚的話~有可能掠過恆春附近後順著東岸北上~
如果轉的角度可以更小~時間更晚~對台灣的威脅也才會越輕微~
4.明天台灣仍位於天秤跟布拉萬之間~兩颱風的外圍氣流交會~風向紊亂~
天氣狀態仍不是很穩定~要多注意雷達上降雨系統的移動跟變化情況~
午後山區有熱對流發展的可能~局部雨勢會比較大~
5.布拉萬過去一段時間中心呈現"跳舞狀"正弦擺動~也就是忽西忽北~
除了是因為北側跟東側高壓引導力量互相拉距造成的以外~
颱風本身的雙眼結構~小眼繞大眼運動也是一個原因~
北側高壓正逐漸北抬~且有慢慢東退的跡象~
東側高壓則逐漸加強~在颱風以東往南伸展~
因此布拉萬明天越過琉球後~方向上仍預估會逐漸北偏~
以上簡單供參考囉~
--
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颱風
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