天氣概況~2012/08/23~天秤颱風海陸警報~ - 颱風討論
By Suhail Hany
at 2012-08-23T09:33
at 2012-08-23T09:33
Table of Contents
昨晚本來想加發一篇文章~不過有事在忙~只好作罷~
這個天秤颱風還真是意外的難搞~嚴格來說是周邊的大氣環境難搞~
先是突然殺出的冷心低壓打亂了天秤的發展~
到昨天原本預期隨著西日本的冷心低壓北上併入槽內後~高壓會持續西伸~
但實際來看高壓西伸卻並不明顯~反而有往東退後的情況..囧
東海到琉球一帶甚至有颱風倒槽北伸的現象~對流發展相當活躍~
雖然這還不足以讓天秤跌破眼鏡的往北跑掉~
但卻讓它幾乎失去引導的力量~在原地附近打轉了一整天的時間~
因為從雲圖雷達圖以及周圍風場的變化來看~颱風雲層仍是逐漸緩慢往西擴展~
各主要模式的預測也沒有明顯改變~
所以預報上還是一直認為它未來會往西移動~並沒有出現預報大改的情況~
實際上昨天從白天到夜晚在天氣上也的確有所變化~至少迎風面的降雨已經陸續出現~
只是颱風不動~而且就在家門口~這讓作預報的人真的很頭痛..XD
綜觀來看~太平洋高壓昨天沒有伸展~今天應該要逐漸西伸了~
加上華南內陸也開始有反氣旋環流建立的現象~
東海上空的倒槽對流雲團逐漸往北移動~脫離颱風外圍~
有利於兩邊高壓的聯接~在颱風北側建立高壓帶~
所以預估天秤未來仍會繼續往西到西北西之間移動~持續往花東沿海靠近~
速度上仍有逐漸加快的預測~特別是等到颱風環流跟地形產生明顯的互動時~
預估今天深夜到明天清晨之間颱風中心就可能靠近沿海~
目前仍以登陸台東成功鎮到秀姑巒溪口一帶的可能性最大~
順利的話大概會在明天清晨左右登陸~跟地形拉扯明顯的話還有可能更早一點~
登陸後原中心可能消滅在山脈東側~
副中心在嘉南沿海一帶重建~以分裂過山的方式通過南台灣上空~
值得注意的是過去幾個小時內颱風環流似乎又變的完整~颱風眼再度出現~
預估各單位評估的強度會有往上提升的機會~
這樣一來對於登陸點附近的風雨威脅會更為嚴重~值得密切注意~
今天白天隨著颱風預測會往西到西北西繼續靠近~
螺旋雨帶對迎風的北部東半部影響會更為明顯~一波一波的降雨帶陸續會甩進來~
大概中午過後中心半徑180~200公里範圍(CWB定出的暴風圈大小)會接觸花東沿海~
然後隨著時間越晚而繼續擴展到台灣各地方~
迎風面地區的風雨會逐漸加大~下午過後陣風陣雨的感受應該會顯著許多~
由於地形屏障的關係~中部南部地區在今天白天可能還是感受不到颱風的影響~
今晚以後隨著颱風中心靠近~東半部的風雨會越來越強~特別是中心以北的區域~
外圍環流影響的北部地區~包括桃園台北基隆等地的陣風陣雨現象也會更趨明顯~
新竹以南地區今晚開始也陸續會有陣雨出現的機會~但對風雨的感受還是比較有限~
明天清晨颱風中心可能登陸~中心附近以及以北的區域風雨強勁~
然後開始分裂過山的過程~在副中心重整的過程中~嘉義以南地區的風雨會明顯增強~
也就是可能從明天中午到晚間這段期間南部的風雨會最大~
並且持續到明天深夜或後天週六的清晨以後~隨颱風往西遠離才會減緩~
嘉義以北到新竹之間持續受到地形屏障~
山區有明顯降雨的機會~特別是在颱風高層轉移過山的期間~
平地的部份可能感受就不會太大~可能有點風雨不過相對比較輕微~
週六上午以後天秤颱風會逐漸往廣東福建海面移動~遠離台灣附近~
東邊的布拉萬颱風外圍雲雨帶則可能還不夠靠近~
天氣似乎會有一個短暫緩和的空檔出現~
不過各地雲量仍然偏多~南部東南部東部比較容易有短暫陣雨的機會~
中部北部要注意午後熱對流發展的情況~
這樣的情況大概會持續到週日~
然後要觀察布拉萬外圍環流雲雨帶靠近北台灣的程度~
以及更重要的就是對於天秤颱風的影響程度如何~
目前的預報模式似乎都認為布拉萬會把已經走向廣東海面的天秤颱風再度拉回~
特別是等到下週一(27號)布拉萬颱風經琉球~東海逐漸北上時~
天秤颱風可能出現回馬槍路徑~先減速~然後調頭往東到東北迴轉~
有再度逼近台灣中部以南地區的機會~
不過這些都還有再變化的可能~目前還是先把焦點放在天秤過台灣的這一段變化就好~
以上簡單供參考囉~
--
這個天秤颱風還真是意外的難搞~嚴格來說是周邊的大氣環境難搞~
先是突然殺出的冷心低壓打亂了天秤的發展~
到昨天原本預期隨著西日本的冷心低壓北上併入槽內後~高壓會持續西伸~
但實際來看高壓西伸卻並不明顯~反而有往東退後的情況..囧
東海到琉球一帶甚至有颱風倒槽北伸的現象~對流發展相當活躍~
雖然這還不足以讓天秤跌破眼鏡的往北跑掉~
但卻讓它幾乎失去引導的力量~在原地附近打轉了一整天的時間~
因為從雲圖雷達圖以及周圍風場的變化來看~颱風雲層仍是逐漸緩慢往西擴展~
各主要模式的預測也沒有明顯改變~
所以預報上還是一直認為它未來會往西移動~並沒有出現預報大改的情況~
實際上昨天從白天到夜晚在天氣上也的確有所變化~至少迎風面的降雨已經陸續出現~
只是颱風不動~而且就在家門口~這讓作預報的人真的很頭痛..XD
綜觀來看~太平洋高壓昨天沒有伸展~今天應該要逐漸西伸了~
加上華南內陸也開始有反氣旋環流建立的現象~
東海上空的倒槽對流雲團逐漸往北移動~脫離颱風外圍~
有利於兩邊高壓的聯接~在颱風北側建立高壓帶~
所以預估天秤未來仍會繼續往西到西北西之間移動~持續往花東沿海靠近~
速度上仍有逐漸加快的預測~特別是等到颱風環流跟地形產生明顯的互動時~
預估今天深夜到明天清晨之間颱風中心就可能靠近沿海~
目前仍以登陸台東成功鎮到秀姑巒溪口一帶的可能性最大~
順利的話大概會在明天清晨左右登陸~跟地形拉扯明顯的話還有可能更早一點~
登陸後原中心可能消滅在山脈東側~
副中心在嘉南沿海一帶重建~以分裂過山的方式通過南台灣上空~
值得注意的是過去幾個小時內颱風環流似乎又變的完整~颱風眼再度出現~
預估各單位評估的強度會有往上提升的機會~
這樣一來對於登陸點附近的風雨威脅會更為嚴重~值得密切注意~
今天白天隨著颱風預測會往西到西北西繼續靠近~
螺旋雨帶對迎風的北部東半部影響會更為明顯~一波一波的降雨帶陸續會甩進來~
大概中午過後中心半徑180~200公里範圍(CWB定出的暴風圈大小)會接觸花東沿海~
然後隨著時間越晚而繼續擴展到台灣各地方~
迎風面地區的風雨會逐漸加大~下午過後陣風陣雨的感受應該會顯著許多~
由於地形屏障的關係~中部南部地區在今天白天可能還是感受不到颱風的影響~
今晚以後隨著颱風中心靠近~東半部的風雨會越來越強~特別是中心以北的區域~
外圍環流影響的北部地區~包括桃園台北基隆等地的陣風陣雨現象也會更趨明顯~
新竹以南地區今晚開始也陸續會有陣雨出現的機會~但對風雨的感受還是比較有限~
明天清晨颱風中心可能登陸~中心附近以及以北的區域風雨強勁~
然後開始分裂過山的過程~在副中心重整的過程中~嘉義以南地區的風雨會明顯增強~
也就是可能從明天中午到晚間這段期間南部的風雨會最大~
並且持續到明天深夜或後天週六的清晨以後~隨颱風往西遠離才會減緩~
嘉義以北到新竹之間持續受到地形屏障~
山區有明顯降雨的機會~特別是在颱風高層轉移過山的期間~
平地的部份可能感受就不會太大~可能有點風雨不過相對比較輕微~
週六上午以後天秤颱風會逐漸往廣東福建海面移動~遠離台灣附近~
東邊的布拉萬颱風外圍雲雨帶則可能還不夠靠近~
天氣似乎會有一個短暫緩和的空檔出現~
不過各地雲量仍然偏多~南部東南部東部比較容易有短暫陣雨的機會~
中部北部要注意午後熱對流發展的情況~
這樣的情況大概會持續到週日~
然後要觀察布拉萬外圍環流雲雨帶靠近北台灣的程度~
以及更重要的就是對於天秤颱風的影響程度如何~
目前的預報模式似乎都認為布拉萬會把已經走向廣東海面的天秤颱風再度拉回~
特別是等到下週一(27號)布拉萬颱風經琉球~東海逐漸北上時~
天秤颱風可能出現回馬槍路徑~先減速~然後調頭往東到東北迴轉~
有再度逼近台灣中部以南地區的機會~
不過這些都還有再變化的可能~目前還是先把焦點放在天秤過台灣的這一段變化就好~
以上簡單供參考囉~
--
Tags:
颱風
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