滯留鋒面北移~降雨增多~102/05/02 - 颱風討論
By Michael
at 2013-05-02T20:09
at 2013-05-02T20:09
Table of Contents
前一波鋒面系統如預期的通過台灣~
過程中除了北海岸有較大降雨以外~中南部山區以及恆春半島的降雨也不小~
嘉義地區在海峽強回波自西向東通過的過程中也一度有蠻大的雨勢出現~
幸好鋒面一掃而過~並沒有停留~
到昨天下半天後鋒面南壓到巴士海峽及南海北部~
鋒後較乾的空氣南下~全台各地的天氣趨於穩定~
乾冷空氣南衝的狀況還蠻明顯的~
反應在昨天台北的溫度就很清楚~原本正常的日變化不見了~
在中午左右出現了日最低溫的14.4度~很顯然是冷空氣的影響~
乾冷空氣影響的時間不長~隨著冷高壓減弱並慢慢東移~
很快的從今天上午開始南海較潮濕的空氣又開始北上了~
因此中南部地區今天陸續有下雨的狀況出現~
今天的降雨還不是很多~明天(3號)以後乾冷空氣更為減弱北收~潮濕空氣範圍將持續北上~
滯留鋒面的位置也將跟著北抬~逐漸來到南台灣上空~
中部南部持續有短暫陣雨或雷雨~隨著時間越晚~降雨的狀況將趨於明顯~
目前的雲圖上看起來滯留鋒面上有蠻活躍的對流系統消長~
底層的輻合線清楚可見~水氣又多~因此對流就很旺盛~
甚至有小小的低壓旋渦存在其中~
請中南部的朋友要特別注意明後兩天(週五週六)的降雨狀況~有發生較大雨勢的機會~
模式預測看起來南台灣的降雨訊號蠻明顯的~
東南部地區到明晚起至後天也要注意降雨的增多~
北部東北部東部明天也將慢慢開始有短暫陣雨出現~
不過降雨的狀況應該是相對比中南部要少一些~
到了後天週六的降雨才會比較多~有雷雨或局部較大雨勢發生的機會~
週日(5號)隨著鋒面位置持續北上~水氣進來的量會減少~
各地的降雨才會比較趨緩一些~不過天氣還沒有馬上穩定下來~仍會有短暫陣雨的可能~
溫度方面在明後天雖然會緩慢回升~不過因為降雨較多的關係~
各地高溫不會太高~高溫預測大概普遍在24~27度間~
週日起降雨減少~南風帶來的暖空氣加強~高溫才會再明顯的上升~
展望未來7~10天內東亞主槽還是異常明顯~
因此持續維持春天的天氣型態為主~
到目前為止仍沒有西南季風要onset的跡象~
以上先簡單供參考囉~
--
過程中除了北海岸有較大降雨以外~中南部山區以及恆春半島的降雨也不小~
嘉義地區在海峽強回波自西向東通過的過程中也一度有蠻大的雨勢出現~
幸好鋒面一掃而過~並沒有停留~
到昨天下半天後鋒面南壓到巴士海峽及南海北部~
鋒後較乾的空氣南下~全台各地的天氣趨於穩定~
乾冷空氣南衝的狀況還蠻明顯的~
反應在昨天台北的溫度就很清楚~原本正常的日變化不見了~
在中午左右出現了日最低溫的14.4度~很顯然是冷空氣的影響~
乾冷空氣影響的時間不長~隨著冷高壓減弱並慢慢東移~
很快的從今天上午開始南海較潮濕的空氣又開始北上了~
因此中南部地區今天陸續有下雨的狀況出現~
今天的降雨還不是很多~明天(3號)以後乾冷空氣更為減弱北收~潮濕空氣範圍將持續北上~
滯留鋒面的位置也將跟著北抬~逐漸來到南台灣上空~
中部南部持續有短暫陣雨或雷雨~隨著時間越晚~降雨的狀況將趨於明顯~
目前的雲圖上看起來滯留鋒面上有蠻活躍的對流系統消長~
底層的輻合線清楚可見~水氣又多~因此對流就很旺盛~
甚至有小小的低壓旋渦存在其中~
請中南部的朋友要特別注意明後兩天(週五週六)的降雨狀況~有發生較大雨勢的機會~
模式預測看起來南台灣的降雨訊號蠻明顯的~
東南部地區到明晚起至後天也要注意降雨的增多~
北部東北部東部明天也將慢慢開始有短暫陣雨出現~
不過降雨的狀況應該是相對比中南部要少一些~
到了後天週六的降雨才會比較多~有雷雨或局部較大雨勢發生的機會~
週日(5號)隨著鋒面位置持續北上~水氣進來的量會減少~
各地的降雨才會比較趨緩一些~不過天氣還沒有馬上穩定下來~仍會有短暫陣雨的可能~
溫度方面在明後天雖然會緩慢回升~不過因為降雨較多的關係~
各地高溫不會太高~高溫預測大概普遍在24~27度間~
週日起降雨減少~南風帶來的暖空氣加強~高溫才會再明顯的上升~
展望未來7~10天內東亞主槽還是異常明顯~
因此持續維持春天的天氣型態為主~
到目前為止仍沒有西南季風要onset的跡象~
以上先簡單供參考囉~
--
Tags:
颱風
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