天氣概況~2008/07/25~鳳凰即將破殼而出~ - 颱風討論
By David
at 2008-07-25T09:23
at 2008-07-25T09:23
Table of Contents
經過一夜~09W還沒有得到JMA的命名成為鳳凰
不過從清晨的一些衛星反演資料來看~包括中心附近風速以及核心環流結構等等
都顯示鳳凰應該即將要破殼而出了~
昨晚到今天清晨09W持續整理環流組織~原本大而鬆散的雲層漸漸收攏
螺旋狀的型態也趨於明顯~不過環流還是很大
從清晨的VIS雲圖來看它最外圍的雲層仍然可以到達台灣東方海域
中心在調整的過程中呈現不規則的飄移現象
有一種在大環流中往西南西繞行的味道~還看不出有明顯受到駛流引導的感覺
不過從最近清晨這2小時來看~似乎已經有一點抓到方向了
慢慢搭上駛流的順風車~開始稍微加速往西移動的趨勢
目前它所在的環境相當不錯~強度將持續發展加強
跟台灣還有超過一千公里的距離~未來影響台灣時的強度不可小覷
至於大家最關心的動態方面目前的看法仍然沒有太大改變
北邊的高壓帶仍然是東西向~也還是分成日本上空以及華南上空兩部分
中間在台灣以北的東海海域仍是一個相對弱點區
昨晚逐漸從山東半島東移的短波槽低壓目前已經進入黃海北部~
正如預期繼續移向朝鮮半島~短波槽底則延伸到黃海中部一帶
雖然它不至於直接影響09W的走向~但是很可能讓兩邊高壓中間的弱點區持續存在
另外還有兩點也可能是未來的整體大氣環流演變的關鍵
第一點是這個短波槽後位於中國東北跟蒙古之間的高壓脊
從預報上來看這個高壓脊將隨著短槽東移~並且逐漸往日本海一帶過渡
未來可能跟日本附近的副高壓產生結合~使得高壓型態慢慢的調整成西北-東南走向
也就是西端的部分往北邊翹起來~東端的部分則往09W以東南落
第二點是南海南部的季風倒槽低壓環流正逐漸順著華南高壓引導而北上
朝向海南島以及東京灣(北部灣)一帶移動
未來可能慢慢伸入華南西部~配合青藏高原以北另外的短波槽活動
削弱華南上空高壓的勢力
簡單來說未來48~72小時高壓帶中兩個高壓中心的勢力將有可能出現消長
而且應該是西消東長~加上東側高壓型態調整
最後的作用就是讓高壓中心之間位於東海的弱點區隨時間擴大並趨於明顯
因此目前來看09W將採取西轉西北移動的機會最大
24~36小時內大致是往西移動~甚至有可能略偏西南西
36小時後~也就是週日(27號)起開始往西北西到西北轉向
轉的角度較大並且較早的話~很可能侵襲花蓮以北或成為西北颱路線
目前JMA的數值預測支持這樣的路線
轉的角度較小而且較晚的話~則可能侵襲台東並且穿越南部
目前JTWC的主觀預報支持這樣的路線
而一向眾所矚目的ECMWF則有點折衷的味道~XD
至於是否會過了台灣才轉或是提早北轉?
目前來看兩者的機會似乎都不大~整個來看對台灣還是相當不利
從實際的狀況來看
明天週六(26號)09W對台灣的影響還不大
外圍的一些雲層可能隨著時間越晚而逐漸影響到迎風面的北部東北部一帶
帶來一些局部的短暫陣雨天氣~中南部山區午後仍有可能產生熱對流
海面上的風浪則有逐漸加強的趨勢
後天週日(27號)09W已經開始逼近台灣~受其環流影響各地天氣開始明顯轉壞
尤其是迎風的北部東半部地區~風雨應該會隨時間而趨於明顯
中南部則要看到時颱風環流跟地形的作用而定
經過上次卡玫基的教訓現在實在不敢說太多..XD
預估颱風影響台灣最大的時間是落在27號晚間起到28號一整天
目前比較擔心的仍是颱風會卡在高壓之間的鞍場而導致移動速度緩慢~加上它環流較大
影響的時間甚至有可能拖到29號才會逐漸過去
提醒明天起一直到下週一二間有安排活動的朋友要多加考慮了
預報雖然不一定準確~但是還是要以個人立場提醒大家注意
至於今天的天氣(竟然最後才說..XD)
還是只有一個熱字可以形容
09W對台灣還沒有直接影響~但卻間接導致台灣上空的下沉作用更強
除了午後山區有局部雷雨的機會外
平地部分外出時仍要特別注意做好防曬跟防中暑的準備
昨天台北市出現今年夏天以來的最高溫37.3度
今天各地高溫也都還是在34~36度之間~紫外線指數也都是破表的危險等級
沒事可能還是躲在家吹電風扇(少開冷氣!!)比較好
以上簡單供參考囉~
--
不過從清晨的一些衛星反演資料來看~包括中心附近風速以及核心環流結構等等
都顯示鳳凰應該即將要破殼而出了~
昨晚到今天清晨09W持續整理環流組織~原本大而鬆散的雲層漸漸收攏
螺旋狀的型態也趨於明顯~不過環流還是很大
從清晨的VIS雲圖來看它最外圍的雲層仍然可以到達台灣東方海域
中心在調整的過程中呈現不規則的飄移現象
有一種在大環流中往西南西繞行的味道~還看不出有明顯受到駛流引導的感覺
不過從最近清晨這2小時來看~似乎已經有一點抓到方向了
慢慢搭上駛流的順風車~開始稍微加速往西移動的趨勢
目前它所在的環境相當不錯~強度將持續發展加強
跟台灣還有超過一千公里的距離~未來影響台灣時的強度不可小覷
至於大家最關心的動態方面目前的看法仍然沒有太大改變
北邊的高壓帶仍然是東西向~也還是分成日本上空以及華南上空兩部分
中間在台灣以北的東海海域仍是一個相對弱點區
昨晚逐漸從山東半島東移的短波槽低壓目前已經進入黃海北部~
正如預期繼續移向朝鮮半島~短波槽底則延伸到黃海中部一帶
雖然它不至於直接影響09W的走向~但是很可能讓兩邊高壓中間的弱點區持續存在
另外還有兩點也可能是未來的整體大氣環流演變的關鍵
第一點是這個短波槽後位於中國東北跟蒙古之間的高壓脊
從預報上來看這個高壓脊將隨著短槽東移~並且逐漸往日本海一帶過渡
未來可能跟日本附近的副高壓產生結合~使得高壓型態慢慢的調整成西北-東南走向
也就是西端的部分往北邊翹起來~東端的部分則往09W以東南落
第二點是南海南部的季風倒槽低壓環流正逐漸順著華南高壓引導而北上
朝向海南島以及東京灣(北部灣)一帶移動
未來可能慢慢伸入華南西部~配合青藏高原以北另外的短波槽活動
削弱華南上空高壓的勢力
簡單來說未來48~72小時高壓帶中兩個高壓中心的勢力將有可能出現消長
而且應該是西消東長~加上東側高壓型態調整
最後的作用就是讓高壓中心之間位於東海的弱點區隨時間擴大並趨於明顯
因此目前來看09W將採取西轉西北移動的機會最大
24~36小時內大致是往西移動~甚至有可能略偏西南西
36小時後~也就是週日(27號)起開始往西北西到西北轉向
轉的角度較大並且較早的話~很可能侵襲花蓮以北或成為西北颱路線
目前JMA的數值預測支持這樣的路線
轉的角度較小而且較晚的話~則可能侵襲台東並且穿越南部
目前JTWC的主觀預報支持這樣的路線
而一向眾所矚目的ECMWF則有點折衷的味道~XD
至於是否會過了台灣才轉或是提早北轉?
目前來看兩者的機會似乎都不大~整個來看對台灣還是相當不利
從實際的狀況來看
明天週六(26號)09W對台灣的影響還不大
外圍的一些雲層可能隨著時間越晚而逐漸影響到迎風面的北部東北部一帶
帶來一些局部的短暫陣雨天氣~中南部山區午後仍有可能產生熱對流
海面上的風浪則有逐漸加強的趨勢
後天週日(27號)09W已經開始逼近台灣~受其環流影響各地天氣開始明顯轉壞
尤其是迎風的北部東半部地區~風雨應該會隨時間而趨於明顯
中南部則要看到時颱風環流跟地形的作用而定
經過上次卡玫基的教訓現在實在不敢說太多..XD
預估颱風影響台灣最大的時間是落在27號晚間起到28號一整天
目前比較擔心的仍是颱風會卡在高壓之間的鞍場而導致移動速度緩慢~加上它環流較大
影響的時間甚至有可能拖到29號才會逐漸過去
提醒明天起一直到下週一二間有安排活動的朋友要多加考慮了
預報雖然不一定準確~但是還是要以個人立場提醒大家注意
至於今天的天氣(竟然最後才說..XD)
還是只有一個熱字可以形容
09W對台灣還沒有直接影響~但卻間接導致台灣上空的下沉作用更強
除了午後山區有局部雷雨的機會外
平地部分外出時仍要特別注意做好防曬跟防中暑的準備
昨天台北市出現今年夏天以來的最高溫37.3度
今天各地高溫也都還是在34~36度之間~紫外線指數也都是破表的危險等級
沒事可能還是躲在家吹電風扇(少開冷氣!!)比較好
以上簡單供參考囉~
--
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