鋒面接近~今晚至明天注意雨勢發生~102/05/16 - 颱風討論

By Puput
at 2013-05-16T20:43
at 2013-05-16T20:43
Table of Contents
隨著鋒面上有低壓波動發展東移~
地面鋒線今天如預期的緩慢南壓~慢慢靠近北部海面~
南海的西南季風漸趨明顯~今天配合鋒面南壓~如同昨天文章所講的~開始影響中南部~
鋒面雖然未到~但是鋒前的降雨就已經展開了~
這一點跟先前的鋒面系統都不太一樣~屬於典型梅雨鋒面的特徵之一~
仔細觀察雲圖也可以看到鋒面雲層的形態跟秋冬季或是春雨鋒面大不相同~
對流相當活躍~有非常多大大小小的對流胞在地面鋒線附近排列消長~
而且對流雲頂的卷雲輻散現象很顯著~高層南亞高壓已經悄悄開始幫助對流輻散的維持~
天氣型態真的變化的很快~上一波還蠻春雨的感覺~
沒有幾天的時間~就已經轉變為梅雨的態勢~
目前地面鋒線大致從北部海面向西南西順著華南沿海伸展~
位於浙江沿海的低壓波動有繼續東移並且加深的趨勢~
地面鋒線可能會再往南移動靠近~然後逐漸分成兩段~
東邊的一段很快的隨著加深的低壓向東移動~
西邊的一段則停留在華南上空~
今晚到明天受到鋒面接近並且掠過後分段等變化的影響~天氣不穩定~
現在在海峽西南部的鋒前強對流雲團正在向東北東移動~
雖然對流雲團本身靠近台灣陸地時有減弱的現象~但是相關的水氣仍會進來~
預估對於中南部的影響比較大~配合迎風地形舉升作用~要特別注意可能出現較大降雨~
北部地區今晚同樣受到這波水氣擴散的影響~下半夜也會有出現陣雨的機會~
東半部相對位於背風面~降雨的狀況會較不明顯~
明天週五(17號)地面鋒線掠過並且分成兩段~
中部以北地區有出現較強對流的可能~有機會造成局部大雨~
午後加上熱力效果~可能發生中到大雷雨~
中部以南地區則持續屬於西南季風的迎風面~
一整天斷斷續續都是有陣雨或雷雨的天氣型態~
午後同樣要注意熱力對流加入可能造成的中到大雷雨發生~
東半部則是屬於短暫陣雨或雷雨的情況~降雨應該會比西半部少~
溫度持續悶熱不舒服~雨勢較大的話才會稍微涼快一些~
預估鋒面帶來的第一階段降雨將從明天持續到週六(18號)上午左右~
務必要注意可能發生的豪大雨現象~
第二階段的降雨可能會從週日(19號)晚間開始~
不過時間還不是很確定~有可能稍微提前~
第二階段降雨的形態看起來比第一階段要更好~詳細狀況明天再來聊~
兩個階段之間只是降雨稍少~應該不是完全的穩定~
除了仍可能有對流系統自海上移入之外~本島上空發展的熱對流也要特別小心~
以上先簡單供參考囉~
--
地面鋒線今天如預期的緩慢南壓~慢慢靠近北部海面~
南海的西南季風漸趨明顯~今天配合鋒面南壓~如同昨天文章所講的~開始影響中南部~
鋒面雖然未到~但是鋒前的降雨就已經展開了~
這一點跟先前的鋒面系統都不太一樣~屬於典型梅雨鋒面的特徵之一~
仔細觀察雲圖也可以看到鋒面雲層的形態跟秋冬季或是春雨鋒面大不相同~
對流相當活躍~有非常多大大小小的對流胞在地面鋒線附近排列消長~
而且對流雲頂的卷雲輻散現象很顯著~高層南亞高壓已經悄悄開始幫助對流輻散的維持~
天氣型態真的變化的很快~上一波還蠻春雨的感覺~
沒有幾天的時間~就已經轉變為梅雨的態勢~
目前地面鋒線大致從北部海面向西南西順著華南沿海伸展~
位於浙江沿海的低壓波動有繼續東移並且加深的趨勢~
地面鋒線可能會再往南移動靠近~然後逐漸分成兩段~
東邊的一段很快的隨著加深的低壓向東移動~
西邊的一段則停留在華南上空~
今晚到明天受到鋒面接近並且掠過後分段等變化的影響~天氣不穩定~
現在在海峽西南部的鋒前強對流雲團正在向東北東移動~
雖然對流雲團本身靠近台灣陸地時有減弱的現象~但是相關的水氣仍會進來~
預估對於中南部的影響比較大~配合迎風地形舉升作用~要特別注意可能出現較大降雨~
北部地區今晚同樣受到這波水氣擴散的影響~下半夜也會有出現陣雨的機會~
東半部相對位於背風面~降雨的狀況會較不明顯~
明天週五(17號)地面鋒線掠過並且分成兩段~
中部以北地區有出現較強對流的可能~有機會造成局部大雨~
午後加上熱力效果~可能發生中到大雷雨~
中部以南地區則持續屬於西南季風的迎風面~
一整天斷斷續續都是有陣雨或雷雨的天氣型態~
午後同樣要注意熱力對流加入可能造成的中到大雷雨發生~
東半部則是屬於短暫陣雨或雷雨的情況~降雨應該會比西半部少~
溫度持續悶熱不舒服~雨勢較大的話才會稍微涼快一些~
預估鋒面帶來的第一階段降雨將從明天持續到週六(18號)上午左右~
務必要注意可能發生的豪大雨現象~
第二階段的降雨可能會從週日(19號)晚間開始~
不過時間還不是很確定~有可能稍微提前~
第二階段降雨的形態看起來比第一階段要更好~詳細狀況明天再來聊~
兩個階段之間只是降雨稍少~應該不是完全的穩定~
除了仍可能有對流系統自海上移入之外~本島上空發展的熱對流也要特別小心~
以上先簡單供參考囉~
--
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颱風
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