今晚短波槽東移~多留意天氣變化~102/05/22 - 颱風討論

By Lydia
at 2013-05-22T16:58
at 2013-05-22T16:58
Table of Contents
中午到下午又是一波較大雨勢通過的時間~不過速度很快~
瞬間雨勢大~但時間不持久~
今天早上出現在廣東的巨大雷雨胞是今天最注目的系統
從00Z的分析天氣圖來看~
這個雷雨胞正好長在500百帕短波槽底附近~有強的正渦平流及強迫舉升機制~
同時也位於300百帕噴流條入區的右側~輻散佳~
850百帕層則剛好是在冷舌的末端~十分不穩定的位置~
幾個條件配合下就長出這個還蠻可怕的系統~
造成香港~廣東沿岸的大暴雨天氣~
台灣位於下游~對流東移擴散後逐漸進入減弱的階段~
因此降雨也就顯得有限~配合午後熱力作用有些對流胞在陸地上生長~
但也都沒有長的很大~移動快速~
模式預估今晚到明天這段時間短波槽將東移出來~
所以今晚到明天須要多觀察對流發展的變化~
目前台灣附近沒有明顯的對流系統~但因為槽正在東移~
所以還是要未雨綢繆一下比較好~
大家要多注意雷達上的變化~一但有規模較大的對流發展~就可能造成強降雨~
而且應變時間蠻短的~不可以太掉以輕心~
明天白天以後短波槽順利東移出去後~整個鋒面不穩定的帶狀區域也將慢慢東移南壓~
明天的天氣可能還是不太穩定~但是發生強降雨的機會應該會相對降低下來~
午後陸地上發展的熱對流仍然需要留心~
後天鋒面雲雨帶更為遠離~天氣就會更好一些了~
簡單提醒~供參考囉~
--
瞬間雨勢大~但時間不持久~
今天早上出現在廣東的巨大雷雨胞是今天最注目的系統
從00Z的分析天氣圖來看~
這個雷雨胞正好長在500百帕短波槽底附近~有強的正渦平流及強迫舉升機制~
同時也位於300百帕噴流條入區的右側~輻散佳~
850百帕層則剛好是在冷舌的末端~十分不穩定的位置~
幾個條件配合下就長出這個還蠻可怕的系統~
造成香港~廣東沿岸的大暴雨天氣~
台灣位於下游~對流東移擴散後逐漸進入減弱的階段~
因此降雨也就顯得有限~配合午後熱力作用有些對流胞在陸地上生長~
但也都沒有長的很大~移動快速~
模式預估今晚到明天這段時間短波槽將東移出來~
所以今晚到明天須要多觀察對流發展的變化~
目前台灣附近沒有明顯的對流系統~但因為槽正在東移~
所以還是要未雨綢繆一下比較好~
大家要多注意雷達上的變化~一但有規模較大的對流發展~就可能造成強降雨~
而且應變時間蠻短的~不可以太掉以輕心~
明天白天以後短波槽順利東移出去後~整個鋒面不穩定的帶狀區域也將慢慢東移南壓~
明天的天氣可能還是不太穩定~但是發生強降雨的機會應該會相對降低下來~
午後陸地上發展的熱對流仍然需要留心~
後天鋒面雲雨帶更為遠離~天氣就會更好一些了~
簡單提醒~供參考囉~
--
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颱風
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