天氣概況~2008/09/28~薔蜜颱風海陸警報~Day-2 - 颱風討論
By Ina
at 2008-09-28T08:39
at 2008-09-28T08:39
Table of Contents
週圍較弱的引導碰上地形的微妙作用再度在薔蜜身上出現
昨天入夜後受到中國上空西環高壓的壓制~薔蜜一度偏西移動
但是西環高壓本身有被高估的問題~東環高壓主體又小扯一下後腿
颱風的走向還是不甚穩定
午夜過後颱風主體環流碰到地形後~地形的影響明顯大過引導
較為顯著的變化果然產生
昨晚有提到這樣的角度跟路線靠近的颱風往北偏的機會較大
薔蜜還真的往北偏了一大段~等於把昨天前半夜的偏西給抵消掉了..XD
大環境來看其實變化並不大
高壓仍然分成東西兩環盤據在颱風的東面跟西北面
兩邊對颱風的引導似乎都沒有決定性的影響~平均駛流大致是往西北
地形的作用仍然是現階段影響颱風細微走向變化的關鍵因素
目前颱風中心跟主要環流大部分都已經進入雷達範圍
有一點現象就是薔蜜已經有雙眼的感覺
中心附近有一圈相當穩固但是範圍較小的眼壁
但是外圍的回波逐漸在花東近海處圍繞起一個較大的圈圈
小眼目前位於這個大圈圈的右側
如果猜得沒錯的話~小眼有可能在接下來幾小時內往大圈圈的中間調整
也就是大致回到西北或西北西走向
逐漸朝秀姑巒溪口以東海面靠近
但是大圈圈受地形影響也可能繼續調整位置
這會使得真正的中心移動顯得搖擺不定
因此大家可以密切注意大圈中心點的改變~應該會是小眼移動方向變化的指引
颱風速度還是蠻快的
沒有意外的話颱風中心仍將在傍晚以後靠近陸地
目前來看花蓮沿海的危險性還是最大~也不排除偏到宜花交界
提醒花蓮~宜蘭~基隆~台北的朋友要特別注意
而中心越靠近後就要更加留心河口的吸引作用了
往往吸引作用一發生~也就是颱風即將登陸的時候
颱風強度在結構變化以及地形跟環境因素影響下
今天會逐漸減弱下來~但是薔蜜本身資本雄厚~
即使逐漸變弱也還是一個相當強的颱風~千萬不可掉以輕心
今天一整天各地都是風雨交加的天氣~今晚風雨最為強勁
颱風登陸後會一直影響到明天~而且明天颱風進入海峽後動態仍有變化的可能
北邊短槽再度靠近~東環高壓主體往西推擠~甚至往南伸入颱風南側
預期颱風將偏北轉移~影響時間拉長
目前來看明天也會是相當糟糕的天氣情況
要到明晚以後各地風雨才會逐漸趨緩
以上簡單供參考~希望大家一切平安
P.S 屋頂修補後目前暫時穩定~期望能撐過這兩天..Orz
--
昨天入夜後受到中國上空西環高壓的壓制~薔蜜一度偏西移動
但是西環高壓本身有被高估的問題~東環高壓主體又小扯一下後腿
颱風的走向還是不甚穩定
午夜過後颱風主體環流碰到地形後~地形的影響明顯大過引導
較為顯著的變化果然產生
昨晚有提到這樣的角度跟路線靠近的颱風往北偏的機會較大
薔蜜還真的往北偏了一大段~等於把昨天前半夜的偏西給抵消掉了..XD
大環境來看其實變化並不大
高壓仍然分成東西兩環盤據在颱風的東面跟西北面
兩邊對颱風的引導似乎都沒有決定性的影響~平均駛流大致是往西北
地形的作用仍然是現階段影響颱風細微走向變化的關鍵因素
目前颱風中心跟主要環流大部分都已經進入雷達範圍
有一點現象就是薔蜜已經有雙眼的感覺
中心附近有一圈相當穩固但是範圍較小的眼壁
但是外圍的回波逐漸在花東近海處圍繞起一個較大的圈圈
小眼目前位於這個大圈圈的右側
如果猜得沒錯的話~小眼有可能在接下來幾小時內往大圈圈的中間調整
也就是大致回到西北或西北西走向
逐漸朝秀姑巒溪口以東海面靠近
但是大圈圈受地形影響也可能繼續調整位置
這會使得真正的中心移動顯得搖擺不定
因此大家可以密切注意大圈中心點的改變~應該會是小眼移動方向變化的指引
颱風速度還是蠻快的
沒有意外的話颱風中心仍將在傍晚以後靠近陸地
目前來看花蓮沿海的危險性還是最大~也不排除偏到宜花交界
提醒花蓮~宜蘭~基隆~台北的朋友要特別注意
而中心越靠近後就要更加留心河口的吸引作用了
往往吸引作用一發生~也就是颱風即將登陸的時候
颱風強度在結構變化以及地形跟環境因素影響下
今天會逐漸減弱下來~但是薔蜜本身資本雄厚~
即使逐漸變弱也還是一個相當強的颱風~千萬不可掉以輕心
今天一整天各地都是風雨交加的天氣~今晚風雨最為強勁
颱風登陸後會一直影響到明天~而且明天颱風進入海峽後動態仍有變化的可能
北邊短槽再度靠近~東環高壓主體往西推擠~甚至往南伸入颱風南側
預期颱風將偏北轉移~影響時間拉長
目前來看明天也會是相當糟糕的天氣情況
要到明晚以後各地風雨才會逐漸趨緩
以上簡單供參考~希望大家一切平安
P.S 屋頂修補後目前暫時穩定~期望能撐過這兩天..Orz
--
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颱風
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