天氣概況~2013/08/19~潭美颱風~ - 颱風討論

By Ida
at 2013-08-19T10:35
at 2013-08-19T10:35
Table of Contents
又要開始忙了~簡單聊一下颱風以及天氣的狀況~
目前潭美颱風仍在大低壓環流中緩慢順著西南季風向東飄移~
北邊的副高壓稍有增強~但勢力還不夠~因此過去一段時間並沒有對潭美造成引導~
反而是TD-13W被高壓一路往西帶~脫離轉了半圈的藤原效應被推去撞向浙江沿海~
潭美則仍是保持小核心~大環流的形態~
核心部分不大~但是整理的還不錯~外圍的環流雲層寬廣~仍然不太聽從中心的指揮~
預估未來隨著副高壓漸加強鞏固~變成"7"字型包圍潭美的北側跟東側~
有利於潭美東半側寬廣的環流雲層捲向核心區域~
因此潭美的強度仍會逐漸增強~這一點跟06年的碧利斯不太一樣~
當年的碧利斯始終整理不起來~核心環流也分成數個小中心~強度一直不強~
反觀潭美雖然也是季風低壓~但整體情況要比碧利斯好得多~
動態方面目前的看法仍沒有太大變化~
今天仍是緩慢向東北東轉東北再轉北移動~正在迴轉調頭的階段~
明天開始受高壓駛流引導轉趨明顯~潭美將折向西北到西北西移動~速度也會大幅加快~
大致趨向台灣東北部近海一帶~然後可能在北部陸地或近海處自東向西通過~
會不會登陸仍要看未來24小時內轉折的角度以及位置~這一點仍要觀察~
今天潭美對臺灣天氣仍沒有太大影響~白天期間仍是位於下沉的區域內~
山區午後有局部熱對流降雨機會~少數地方仍有較大雨勢出現的可能~
熱對流發展後由北往南擴散~因此中南部平地的朋友也要注意一下午後的天氣變化~
深夜以後到明天清晨間~潭美的外圍環流雲層可能逐漸靠近~
北部東北部一帶雲量漸增~降雨的機會提高~
明天周二(20號)潭美的外圍環流對臺灣天氣的影響就會開始出現~
除了北部東北部持續有陣雨以外~因為有北風到西北風下來的關係~
中部地區逐漸也會開始有降雨的狀況~然後會往南蔓延到南部地區~
花東一帶比較位於背風~但仍要注意自東向西擴散的雲雨帶~
降雨越晚會越明顯~預報的累積雨量訊號頗大~請大家明天一定要特別注意~
沿海高地的風勢也可能慢慢出現~尤其是明晚以後~
天氣開始轉差~各種活動最好都能避免~
周三(21號)潭美迅速逼近~可能在周三晚到周四天亮前會在北臺灣或近海通過~
周四(22號)颱風持續西進~應該中午左右就會在福建沿海進入大陸地區~
因此周三周四這兩天風雨都會是最大的時候~
特別是中心往北台灣靠近的過程中~颱風風場先跟北台灣正衝~
然後轉移到西半部地區的過程~引發的強降雨跟強風都是必須嚴加防範的狀況~
雨的狀況請特別小心~尤其是風場轉移到西半部的時候~雨會特別大~
強風的部分則比較偏向北台灣~這颱風的核心區域仍是有一定實力的~
花東地區的朋友在颱風接近的過程中也要注意強降雨~
颱風中心來到北臺灣時則要注意焚風現象的發生~
這颱風過後仍有較強的偏南到西南風水氣會上來~
因此周四雖然颱風可望登陸大陸~但後續中南部還有東南部的降雨仍要持續留意~
南來水氣可能要延續到周五(23號)甚至周六(24號)~
中南部地區還有花蓮以南地區仍要注意較大雨勢出現的狀況~
北部東北部則是要小心午後大雷雨發生~整體天氣仍不太穩定~
周日(25號)起高壓逐漸籠罩過來~水氣減少~季風槽低壓帶明顯向西收縮~
台灣的天氣才可望漸趨於穩定下來~
總之~潭美對臺灣有相當程度的威脅~
請大家及早做好防颱的準備囉~
以上簡單供參考~
--
目前潭美颱風仍在大低壓環流中緩慢順著西南季風向東飄移~
北邊的副高壓稍有增強~但勢力還不夠~因此過去一段時間並沒有對潭美造成引導~
反而是TD-13W被高壓一路往西帶~脫離轉了半圈的藤原效應被推去撞向浙江沿海~
潭美則仍是保持小核心~大環流的形態~
核心部分不大~但是整理的還不錯~外圍的環流雲層寬廣~仍然不太聽從中心的指揮~
預估未來隨著副高壓漸加強鞏固~變成"7"字型包圍潭美的北側跟東側~
有利於潭美東半側寬廣的環流雲層捲向核心區域~
因此潭美的強度仍會逐漸增強~這一點跟06年的碧利斯不太一樣~
當年的碧利斯始終整理不起來~核心環流也分成數個小中心~強度一直不強~
反觀潭美雖然也是季風低壓~但整體情況要比碧利斯好得多~
動態方面目前的看法仍沒有太大變化~
今天仍是緩慢向東北東轉東北再轉北移動~正在迴轉調頭的階段~
明天開始受高壓駛流引導轉趨明顯~潭美將折向西北到西北西移動~速度也會大幅加快~
大致趨向台灣東北部近海一帶~然後可能在北部陸地或近海處自東向西通過~
會不會登陸仍要看未來24小時內轉折的角度以及位置~這一點仍要觀察~
今天潭美對臺灣天氣仍沒有太大影響~白天期間仍是位於下沉的區域內~
山區午後有局部熱對流降雨機會~少數地方仍有較大雨勢出現的可能~
熱對流發展後由北往南擴散~因此中南部平地的朋友也要注意一下午後的天氣變化~
深夜以後到明天清晨間~潭美的外圍環流雲層可能逐漸靠近~
北部東北部一帶雲量漸增~降雨的機會提高~
明天周二(20號)潭美的外圍環流對臺灣天氣的影響就會開始出現~
除了北部東北部持續有陣雨以外~因為有北風到西北風下來的關係~
中部地區逐漸也會開始有降雨的狀況~然後會往南蔓延到南部地區~
花東一帶比較位於背風~但仍要注意自東向西擴散的雲雨帶~
降雨越晚會越明顯~預報的累積雨量訊號頗大~請大家明天一定要特別注意~
沿海高地的風勢也可能慢慢出現~尤其是明晚以後~
天氣開始轉差~各種活動最好都能避免~
周三(21號)潭美迅速逼近~可能在周三晚到周四天亮前會在北臺灣或近海通過~
周四(22號)颱風持續西進~應該中午左右就會在福建沿海進入大陸地區~
因此周三周四這兩天風雨都會是最大的時候~
特別是中心往北台灣靠近的過程中~颱風風場先跟北台灣正衝~
然後轉移到西半部地區的過程~引發的強降雨跟強風都是必須嚴加防範的狀況~
雨的狀況請特別小心~尤其是風場轉移到西半部的時候~雨會特別大~
強風的部分則比較偏向北台灣~這颱風的核心區域仍是有一定實力的~
花東地區的朋友在颱風接近的過程中也要注意強降雨~
颱風中心來到北臺灣時則要注意焚風現象的發生~
這颱風過後仍有較強的偏南到西南風水氣會上來~
因此周四雖然颱風可望登陸大陸~但後續中南部還有東南部的降雨仍要持續留意~
南來水氣可能要延續到周五(23號)甚至周六(24號)~
中南部地區還有花蓮以南地區仍要注意較大雨勢出現的狀況~
北部東北部則是要小心午後大雷雨發生~整體天氣仍不太穩定~
周日(25號)起高壓逐漸籠罩過來~水氣減少~季風槽低壓帶明顯向西收縮~
台灣的天氣才可望漸趨於穩定下來~
總之~潭美對臺灣有相當程度的威脅~
請大家及早做好防颱的準備囉~
以上簡單供參考~
--
Tags:
颱風
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