夏季天氣持續~注意熱帶擾動發展~102/08/24 - 颱風討論

By Odelette
at 2013-08-24T15:55
at 2013-08-24T15:55
Table of Contents
雖然高壓勢力如預期的向西伸展~潭美颱風相關的低壓雲雨帶持續向西遠離~
不過今天台灣上空的高壓還不夠強~午後仍有熱對流發展的狀況~
目前中北部許多地方都正在下午後雷雨~對流呈現往西擴散的現象~
今天的水氣有比較少一些~熱對流的降雨看起來不會像昨天那麼猛烈~
但是在雨停之前外出仍要特別小心~
明天起高壓勢力還會再增強並且更往西伸展~
預估未來3~4天內都將是典型的夏季型天氣~
上午各地晴到多雲~午後山區有熱對流系統發展的機會~
熱對流降雨慢慢會縮減到以山區為主~平地的降雨會減少許多~
但是下午外出的朋友還是要注意一下雷達上的變化~
前往山區活動尤其要小心~
溫度偏高且日照強烈~防曬防中暑的準備不可少~
這幾天台灣的天氣趨於穩定~但是菲律賓以東的擾動91W有機會逐漸西移且發展~
預估91W西移後會跟南海的季風槽接上線~季風槽再度從南海會沿伸到菲律賓以東~
91W接上西南季風後發展的條件應該會更好~因此值得觀察其未來的變化~
預估到28號以後高壓的勢力有慢慢減弱東退的趨勢~
91W應該會有機會拋物線順轉~在菲律賓以東轉向偏北進行~
28~29號間逐漸來到臺灣東南方海域~
接下來是不是會更靠近台灣仍要再觀察~有可能會繼續北上在臺灣以東往北移動~
這一點跟月底左右華北移出的西風槽有關~
如果30號以後西風槽東移造成高壓東退更為明顯~甚至往91W南側伸展的話~
91W應該就會繼續在臺灣以東北上~跟西風槽前的冷鋒連結~持續趨向日本~
照這樣的趨勢演變對臺灣比較有利一些~
熱帶擾動暖濕空氣跟冷鋒交會的強降雨區可望偏向琉球一帶~
如果91W是在臺灣西南側那就會很麻煩了~幸好現在幾個模式都不這麼預測~
不過台灣的天氣仍會受到影響~變化比較大的時間點應該會落在下周末(31號~1號)左右~
但是時間還比較久遠~有待繼續觀察~
以上先簡單供參考囉~
--
不過今天台灣上空的高壓還不夠強~午後仍有熱對流發展的狀況~
目前中北部許多地方都正在下午後雷雨~對流呈現往西擴散的現象~
今天的水氣有比較少一些~熱對流的降雨看起來不會像昨天那麼猛烈~
但是在雨停之前外出仍要特別小心~
明天起高壓勢力還會再增強並且更往西伸展~
預估未來3~4天內都將是典型的夏季型天氣~
上午各地晴到多雲~午後山區有熱對流系統發展的機會~
熱對流降雨慢慢會縮減到以山區為主~平地的降雨會減少許多~
但是下午外出的朋友還是要注意一下雷達上的變化~
前往山區活動尤其要小心~
溫度偏高且日照強烈~防曬防中暑的準備不可少~
這幾天台灣的天氣趨於穩定~但是菲律賓以東的擾動91W有機會逐漸西移且發展~
預估91W西移後會跟南海的季風槽接上線~季風槽再度從南海會沿伸到菲律賓以東~
91W接上西南季風後發展的條件應該會更好~因此值得觀察其未來的變化~
預估到28號以後高壓的勢力有慢慢減弱東退的趨勢~
91W應該會有機會拋物線順轉~在菲律賓以東轉向偏北進行~
28~29號間逐漸來到臺灣東南方海域~
接下來是不是會更靠近台灣仍要再觀察~有可能會繼續北上在臺灣以東往北移動~
這一點跟月底左右華北移出的西風槽有關~
如果30號以後西風槽東移造成高壓東退更為明顯~甚至往91W南側伸展的話~
91W應該就會繼續在臺灣以東北上~跟西風槽前的冷鋒連結~持續趨向日本~
照這樣的趨勢演變對臺灣比較有利一些~
熱帶擾動暖濕空氣跟冷鋒交會的強降雨區可望偏向琉球一帶~
如果91W是在臺灣西南側那就會很麻煩了~幸好現在幾個模式都不這麼預測~
不過台灣的天氣仍會受到影響~變化比較大的時間點應該會落在下周末(31號~1號)左右~
但是時間還比較久遠~有待繼續觀察~
以上先簡單供參考囉~
--
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