盧碧颱風~09/10/23 - 颱風討論

By Quintina
at 2009-10-23T23:55
at 2009-10-23T23:55
Table of Contents
今天一天盧碧颱風大致如預期的打轉後緩慢往北飄
東邊的高壓主體慢慢往西伸~不過西伸的緯度稍微偏南
而且伸展幅度還不夠大~對颱風的引導力量仍然很有限~因此颱風速度緩慢
原本早上還在華中的南支短波槽快速向東移~晚間已經來到華東即將進入東海
槽前輻散氣流正好疊加在台灣東北方到琉球一帶的鋒面雲帶上
可以看到鋒面雲帶因此有明顯發展~幸好雲帶並不在台灣上空~
而且颱風的水氣主要也還是偏在台灣東方海面北上
因此台灣降雨的情況入夜後並沒有再增加變大的趨勢~
但是槽前輻散位置較為偏北的情況下~也沒能讓颱風高層的輻散增強
造成盧碧今天一天結構持續轉差~高層對流雲呈現潰散狀~對流活動也很疲弱
強度的評價也就被各氣象單位陸續往下調整
同時颱風範圍大幅縮小~連原本風力頗強的蘭嶼測站風速都下降許多
因為高壓西伸緯度較偏南的關係~加上短波槽即將要進入東海
晚間時颱風東側的高壓已經逐漸呈現北北東-南南西的走向
北邊的部分往東退後~南邊的部分緩慢西伸
以這樣的情況來看~預估盧碧仍將緩慢北飄~
但是受到高壓形狀的影響~方向上可能會逐漸有偏東分量
今晚移動的速度還不會很快~
明天白天以後颱風逐漸來到較高緯度~東移的短波槽底有機會稍稍牽到盧碧
颱風速度將有稍加快的可能~移向的偏東分量也可能變得更大一點
如果整體趨勢不變的話~盧碧對台灣影響最大的時間應該已經過去了
接下來較強雨區大部份也都偏在東部海面上發展活動
雖然明天在北部東北部東部仍有短暫陣雨~不過雨勢會比今天要小了許多
但迎風面山區仍要小心局部較大的雨勢出現
同時沿海風浪則還是頗強~海邊活動仍然不太適合
以上簡單供參考囉~
--
東邊的高壓主體慢慢往西伸~不過西伸的緯度稍微偏南
而且伸展幅度還不夠大~對颱風的引導力量仍然很有限~因此颱風速度緩慢
原本早上還在華中的南支短波槽快速向東移~晚間已經來到華東即將進入東海
槽前輻散氣流正好疊加在台灣東北方到琉球一帶的鋒面雲帶上
可以看到鋒面雲帶因此有明顯發展~幸好雲帶並不在台灣上空~
而且颱風的水氣主要也還是偏在台灣東方海面北上
因此台灣降雨的情況入夜後並沒有再增加變大的趨勢~
但是槽前輻散位置較為偏北的情況下~也沒能讓颱風高層的輻散增強
造成盧碧今天一天結構持續轉差~高層對流雲呈現潰散狀~對流活動也很疲弱
強度的評價也就被各氣象單位陸續往下調整
同時颱風範圍大幅縮小~連原本風力頗強的蘭嶼測站風速都下降許多
因為高壓西伸緯度較偏南的關係~加上短波槽即將要進入東海
晚間時颱風東側的高壓已經逐漸呈現北北東-南南西的走向
北邊的部分往東退後~南邊的部分緩慢西伸
以這樣的情況來看~預估盧碧仍將緩慢北飄~
但是受到高壓形狀的影響~方向上可能會逐漸有偏東分量
今晚移動的速度還不會很快~
明天白天以後颱風逐漸來到較高緯度~東移的短波槽底有機會稍稍牽到盧碧
颱風速度將有稍加快的可能~移向的偏東分量也可能變得更大一點
如果整體趨勢不變的話~盧碧對台灣影響最大的時間應該已經過去了
接下來較強雨區大部份也都偏在東部海面上發展活動
雖然明天在北部東北部東部仍有短暫陣雨~不過雨勢會比今天要小了許多
但迎風面山區仍要小心局部較大的雨勢出現
同時沿海風浪則還是頗強~海邊活動仍然不太適合
以上簡單供參考囉~
--
Tags:
颱風
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