明天鋒面掠過,注意較大雨勢~2014/04/26 - 颱風討論

By Callum
at 2014-04-26T22:32
at 2014-04-26T22:32
Table of Contents
為了參加馬拉松所以禮拜四就下來恆春,目前人還在南灣,
先來簡單聊一下明後天的天氣,
這兩天南北之間的天氣差異真的很大,
雖然綜觀鋒面系統的確如預期從週四起緩慢北抬,
週五以及今天週六鋒面位置在華南北部,
但是鋒面前方的大氣狀態比先前預期的要來得不穩定許多,
週四晚間以及週五晚間都有鋒前的中小尺度對流系統從華南沿海升起,
然後向東移動掠過北台灣上空,帶來陣雨或雷雨的天氣現象,
這種中小尺度對流系統的發展移動在這幾天模式的掌握度的確不是很好,
不是沒有預測出來就是時間很接近時才預測到
因此就會讓大家覺得這幾天的預報好像不太準確的樣子,
今天下午台灣本島的熱力作用變得明顯,
本地上空近中午左右就有熱對流發展,加上一些海面上順著鋒前西南風飄過來的雲層,
內外交會的情況下讓中北部地區出現了較為旺盛的對流系統,
東北角一帶累積雨量最多,達到70~90毫米,
目前鋒面系統的位置隨著華北西風槽東移而逐漸南壓,大致已經來到大陸東南沿海,
預估明天週日(27日)白天期間就會東移掠過台灣上空,時間比先前預估要早,
鋒面系統上仍可能會有較為旺盛的對流系統發展,
因此明天台灣的天氣不穩定,尤其是中部以北到東半部地區,
一但剛好有對流胞在陸地上長出或是從近海移入就會造成陣雨或雷雨的現象,
並且有較大雨勢以及強風等現象伴隨,請大家要多加注意,
中部以南地區降雨的狀況相對沒有那麼多,但還是要注意天氣變化的狀況,
明天白天雖然鋒面掠過,降雨機會大,但是鋒後較涼的空氣還未到達,
因此明天白天各地高溫普遍預估仍有30度上下,南部地區可能達到31~32度,
要等到明晚較涼的空氣南下,溫度才會由北往南下降,
北台灣感受還是會最明顯,下週一(28日)白天的高溫在北部一下子就會降到21~24度左右,
這個降幅還蠻大的,因此溫度上的變化也要特別注意,
中南部受影響就比較小,下週一白天的高溫應該還是可能接近到28~30度,
鋒面掠過後有較乾的空氣下來,下週一(28日)各地天氣逐漸趨於穩定,降雨減少,
不過雲量普遍還是比較多,面迎東北風的北部、東半部仍可能有局部短暫陣雨,
另外一個要注意就是關島南南東方海面的擾動99W,
環流正在逐漸發展,對流鞏固並且有旋轉的跡象,未來的變化值得觀察,
以上簡單先供參考囉~
--
先來簡單聊一下明後天的天氣,
這兩天南北之間的天氣差異真的很大,
雖然綜觀鋒面系統的確如預期從週四起緩慢北抬,
週五以及今天週六鋒面位置在華南北部,
但是鋒面前方的大氣狀態比先前預期的要來得不穩定許多,
週四晚間以及週五晚間都有鋒前的中小尺度對流系統從華南沿海升起,
然後向東移動掠過北台灣上空,帶來陣雨或雷雨的天氣現象,
這種中小尺度對流系統的發展移動在這幾天模式的掌握度的確不是很好,
不是沒有預測出來就是時間很接近時才預測到
因此就會讓大家覺得這幾天的預報好像不太準確的樣子,
今天下午台灣本島的熱力作用變得明顯,
本地上空近中午左右就有熱對流發展,加上一些海面上順著鋒前西南風飄過來的雲層,
內外交會的情況下讓中北部地區出現了較為旺盛的對流系統,
東北角一帶累積雨量最多,達到70~90毫米,
目前鋒面系統的位置隨著華北西風槽東移而逐漸南壓,大致已經來到大陸東南沿海,
預估明天週日(27日)白天期間就會東移掠過台灣上空,時間比先前預估要早,
鋒面系統上仍可能會有較為旺盛的對流系統發展,
因此明天台灣的天氣不穩定,尤其是中部以北到東半部地區,
一但剛好有對流胞在陸地上長出或是從近海移入就會造成陣雨或雷雨的現象,
並且有較大雨勢以及強風等現象伴隨,請大家要多加注意,
中部以南地區降雨的狀況相對沒有那麼多,但還是要注意天氣變化的狀況,
明天白天雖然鋒面掠過,降雨機會大,但是鋒後較涼的空氣還未到達,
因此明天白天各地高溫普遍預估仍有30度上下,南部地區可能達到31~32度,
要等到明晚較涼的空氣南下,溫度才會由北往南下降,
北台灣感受還是會最明顯,下週一(28日)白天的高溫在北部一下子就會降到21~24度左右,
這個降幅還蠻大的,因此溫度上的變化也要特別注意,
中南部受影響就比較小,下週一白天的高溫應該還是可能接近到28~30度,
鋒面掠過後有較乾的空氣下來,下週一(28日)各地天氣逐漸趨於穩定,降雨減少,
不過雲量普遍還是比較多,面迎東北風的北部、東半部仍可能有局部短暫陣雨,
另外一個要注意就是關島南南東方海面的擾動99W,
環流正在逐漸發展,對流鞏固並且有旋轉的跡象,未來的變化值得觀察,
以上簡單先供參考囉~
--
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