天氣概況~2012/07/25~冷低影響~天氣不穩定~ - 颱風討論
By Yuri
at 2012-07-25T09:34
at 2012-07-25T09:34
Table of Contents
昨天台灣原本就位於季風槽北側~水氣偏多~
迎風面上不斷有降雨雲層發展帶來陣雨~
這時高空又有冷心低壓從東邊靠近~大氣不穩定度更為提升~
午後熱對流的發展非常旺盛~如預期的在中南部出現大雷雨現象~
到了晚間因為冷心低壓環流更為靠近~連新竹苗栗也出現雷雨胞~
這個北部發展的雷雨胞造成台北的朋友再度觀賞到夜間的閃電秀~非常壯觀~
今天看起來台灣仍位於大季風槽內~低層持續為東南風向~水氣仍多~
迎風的東半部以及恆春半島仍有短暫陣雨~可能出現較大雨勢~
高空冷心低壓的位置則已經跑到台灣北部近海~
因此台灣上空的大氣還是很不穩定的~
配合午後熱力作用~預期今天午後仍有旺盛對流系統發展的情況~
冷低的位置改變~今天的熱對流發展後可能轉往東或東北方擴散~
但是各地都要多加留意才行~熱對流的發展神出鬼沒~
一但對流旺盛的時候~就會帶來瞬間大雨~閃電落雷~甚至是強陣風以及冰雹等現象~
午後外出的話記得要多注意雷達上的最新變化~
明天週四(26號)到後天週五(27號)天氣仍然不穩定~
最主要是在冷低的尾巴~台灣東南方如先前預期可能有擾動發展~目前已經定出了擾動94W
從連續動畫雲圖來看~94W結構還很鬆散~但已經隱約可見LLCC
環境垂直風切不大~位於季風槽東端~水氣的來源也相當充沛~
發展的條件還不錯~但因為已經離陸地不遠~可能沒有時間讓它好好發展整理結構~
明後兩天94W預估會逐漸順著高壓邊緣往台灣附近靠近~
雖然強度有限~但是卻會延續季風槽的影響~帶來較多的降雨機會~
東半部以及恆春半島持續有陣雨~北部地區也可能轉為有短暫陣雨的天氣~
中部南部要留意午後旺盛熱對流發展擴散造成的強降雨現象~
如果94W有所發展的話~對於天氣的影響還可能會更大一點~
不過依照現在的預測來看~94W應該不會有太大的加強~
只是因為距離台灣很近~還是要多加觀察注意一下~
週末的天氣仍要觀察94W後續的變化情況~
不過目前看起來台灣附近可能還是一個蠻多水氣的型態~
即使94W離開或消失~季風槽的影響可能還是會維持下去~
副高壓穩定的停留在日本附近~季風槽也就穩定的影響華南到台灣的天氣~
夏天這種日本晴朗酷熱~台灣天氣就不穩定的情況~今年也再度發生~
更遠處的海面上還有93W~那是另一個低緯度低壓帶中的產物~
下週可能就得密切注意93W發展移動的情況~
如果高壓還是穩定的鎮守在日本附近~93W對台灣造成影響的機會就比較大了~
以上先簡單供參考囉~
--
迎風面上不斷有降雨雲層發展帶來陣雨~
這時高空又有冷心低壓從東邊靠近~大氣不穩定度更為提升~
午後熱對流的發展非常旺盛~如預期的在中南部出現大雷雨現象~
到了晚間因為冷心低壓環流更為靠近~連新竹苗栗也出現雷雨胞~
這個北部發展的雷雨胞造成台北的朋友再度觀賞到夜間的閃電秀~非常壯觀~
今天看起來台灣仍位於大季風槽內~低層持續為東南風向~水氣仍多~
迎風的東半部以及恆春半島仍有短暫陣雨~可能出現較大雨勢~
高空冷心低壓的位置則已經跑到台灣北部近海~
因此台灣上空的大氣還是很不穩定的~
配合午後熱力作用~預期今天午後仍有旺盛對流系統發展的情況~
冷低的位置改變~今天的熱對流發展後可能轉往東或東北方擴散~
但是各地都要多加留意才行~熱對流的發展神出鬼沒~
一但對流旺盛的時候~就會帶來瞬間大雨~閃電落雷~甚至是強陣風以及冰雹等現象~
午後外出的話記得要多注意雷達上的最新變化~
明天週四(26號)到後天週五(27號)天氣仍然不穩定~
最主要是在冷低的尾巴~台灣東南方如先前預期可能有擾動發展~目前已經定出了擾動94W
從連續動畫雲圖來看~94W結構還很鬆散~但已經隱約可見LLCC
環境垂直風切不大~位於季風槽東端~水氣的來源也相當充沛~
發展的條件還不錯~但因為已經離陸地不遠~可能沒有時間讓它好好發展整理結構~
明後兩天94W預估會逐漸順著高壓邊緣往台灣附近靠近~
雖然強度有限~但是卻會延續季風槽的影響~帶來較多的降雨機會~
東半部以及恆春半島持續有陣雨~北部地區也可能轉為有短暫陣雨的天氣~
中部南部要留意午後旺盛熱對流發展擴散造成的強降雨現象~
如果94W有所發展的話~對於天氣的影響還可能會更大一點~
不過依照現在的預測來看~94W應該不會有太大的加強~
只是因為距離台灣很近~還是要多加觀察注意一下~
週末的天氣仍要觀察94W後續的變化情況~
不過目前看起來台灣附近可能還是一個蠻多水氣的型態~
即使94W離開或消失~季風槽的影響可能還是會維持下去~
副高壓穩定的停留在日本附近~季風槽也就穩定的影響華南到台灣的天氣~
夏天這種日本晴朗酷熱~台灣天氣就不穩定的情況~今年也再度發生~
更遠處的海面上還有93W~那是另一個低緯度低壓帶中的產物~
下週可能就得密切注意93W發展移動的情況~
如果高壓還是穩定的鎮守在日本附近~93W對台灣造成影響的機會就比較大了~
以上先簡單供參考囉~
--
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