天氣概況~2009/10/14 - 颱風討論

By Carol
at 2009-10-14T09:26
at 2009-10-14T09:26
Table of Contents
原本預期影響台灣的東北季風補充目前已經逐漸南下
前緣開始接觸到北台灣一帶~今天還會持續往南吹送
這波東北風前緣有微弱鋒面~不過看起來位置比預期偏北了一些
尾巴掃過東海南部~目前正跟台灣東北部海面的對流雲團接上線
這種情況對台灣來講比較有利~鋒面沒有直接到達讓降雨增強
反而可以改變大氣環境~把在東部海域停留多時的低壓波動給帶走
因此今天看起來台灣迎風面地區會逐漸轉為比較單純的東北季風降雨型態
不過底層水氣還是蠻多的~降雨的情況仍是比一般東北季風要來得明顯一些
台北基隆宜蘭等地為直接迎風~維持陰有短暫陣雨的天氣~
基隆北海岸及宜蘭部分地方仍可能出現較大的累積雨量
宜蘭的鄉親可以稍微鬆口氣但還是不可掉以輕心
桃園跟花蓮台東到恆春半島一帶同樣受東北風影響雲層也較厚~有局部短暫陣雨
花蓮今天再下大雨的機會已經降低許多~不過小塊的對流雲變動性很大~還是要注意
新竹以南到高屏等地則大致為多雲到晴的天氣~相對穩定
溫度部份也維持北東較涼中南部較暖且日夜溫差稍大的情況
今天東北風再增強~西部沿海的偏北風也會加大~請注意較強陣風出現的現象
明天週四(15號)仍在東北季風的影響下~天氣型態跟今天類似
要特別注意的還是在東北部迎風面地區可能出現的局部較大降雨
後天週五(16號)帶來東北風的地面高壓從長江口出海減弱消失
台灣附近將以微弱東風到東南風為主
理論上天氣應該會好轉~但有個很大的變數就是目前正在通過菲律賓的擾動93W
93W現在的結構還不是很好~LLCC偏在整體系統的東側
不過受到菲律賓群島地形加強輻合效果的影響
對流雲團的發展頗為旺盛~可望逐漸推動結構的整理組織過程開始進行
未來強度將有增強發展的趨勢~特別是明後天慢慢進入南海之後
隨著強度發展~北側的倒槽也會往北到東北方向延伸
水氣可能因此被往北帶到台灣附近來~
目前的預測來看它的外圍水氣後天就會慢慢北上靠近
而週五晚間正好有下一波東北季風冷高壓前緣的鋒面南下
大陸華北到華東一帶也有西風槽東移
南北兩邊的系統會不會又產生交會作用非常值得觀察
對於週末期間的天氣~尤其是迎風面地方影響很大
另外一個擾動就是在關島東南東方海面的94W
這個東風波擾動發展的很快~對流雲團已經逐漸圍繞LLCC周圍開始旋轉
渦度有加深的趨勢~這代表系統有開始增強~並且啟動CISK機制的現象
JTWC已經對它發出TCFA警報~不排除很快在24小時內就會升格為TD-22W
中期預報來看這個系統將在下週順著高壓引導西移逼近菲律賓
而且發展的條件似乎不差~強度會頗為可觀
因此對94W未來的發展變化以及動態需要特別加以注意
最後一提就是芭瑪颱風~經過前兩天的最後一輪爆發後
目前它即將登陸越南北部沿海~結構也明顯轉差
進入陸地後很快會消滅而結束它傳奇的一生
尼伯特颱風則已經早它一步轉變為溫帶氣旋~結束颱風生命
以上簡單供參考囉~
--
前緣開始接觸到北台灣一帶~今天還會持續往南吹送
這波東北風前緣有微弱鋒面~不過看起來位置比預期偏北了一些
尾巴掃過東海南部~目前正跟台灣東北部海面的對流雲團接上線
這種情況對台灣來講比較有利~鋒面沒有直接到達讓降雨增強
反而可以改變大氣環境~把在東部海域停留多時的低壓波動給帶走
因此今天看起來台灣迎風面地區會逐漸轉為比較單純的東北季風降雨型態
不過底層水氣還是蠻多的~降雨的情況仍是比一般東北季風要來得明顯一些
台北基隆宜蘭等地為直接迎風~維持陰有短暫陣雨的天氣~
基隆北海岸及宜蘭部分地方仍可能出現較大的累積雨量
宜蘭的鄉親可以稍微鬆口氣但還是不可掉以輕心
桃園跟花蓮台東到恆春半島一帶同樣受東北風影響雲層也較厚~有局部短暫陣雨
花蓮今天再下大雨的機會已經降低許多~不過小塊的對流雲變動性很大~還是要注意
新竹以南到高屏等地則大致為多雲到晴的天氣~相對穩定
溫度部份也維持北東較涼中南部較暖且日夜溫差稍大的情況
今天東北風再增強~西部沿海的偏北風也會加大~請注意較強陣風出現的現象
明天週四(15號)仍在東北季風的影響下~天氣型態跟今天類似
要特別注意的還是在東北部迎風面地區可能出現的局部較大降雨
後天週五(16號)帶來東北風的地面高壓從長江口出海減弱消失
台灣附近將以微弱東風到東南風為主
理論上天氣應該會好轉~但有個很大的變數就是目前正在通過菲律賓的擾動93W
93W現在的結構還不是很好~LLCC偏在整體系統的東側
不過受到菲律賓群島地形加強輻合效果的影響
對流雲團的發展頗為旺盛~可望逐漸推動結構的整理組織過程開始進行
未來強度將有增強發展的趨勢~特別是明後天慢慢進入南海之後
隨著強度發展~北側的倒槽也會往北到東北方向延伸
水氣可能因此被往北帶到台灣附近來~
目前的預測來看它的外圍水氣後天就會慢慢北上靠近
而週五晚間正好有下一波東北季風冷高壓前緣的鋒面南下
大陸華北到華東一帶也有西風槽東移
南北兩邊的系統會不會又產生交會作用非常值得觀察
對於週末期間的天氣~尤其是迎風面地方影響很大
另外一個擾動就是在關島東南東方海面的94W
這個東風波擾動發展的很快~對流雲團已經逐漸圍繞LLCC周圍開始旋轉
渦度有加深的趨勢~這代表系統有開始增強~並且啟動CISK機制的現象
JTWC已經對它發出TCFA警報~不排除很快在24小時內就會升格為TD-22W
中期預報來看這個系統將在下週順著高壓引導西移逼近菲律賓
而且發展的條件似乎不差~強度會頗為可觀
因此對94W未來的發展變化以及動態需要特別加以注意
最後一提就是芭瑪颱風~經過前兩天的最後一輪爆發後
目前它即將登陸越南北部沿海~結構也明顯轉差
進入陸地後很快會消滅而結束它傳奇的一生
尼伯特颱風則已經早它一步轉變為溫帶氣旋~結束颱風生命
以上簡單供參考囉~
--
Tags:
颱風
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