鋒面南壓,中南部注意強降雨~2014/06/03 - 颱風討論

By Kumar
at 2014-06-03T23:19
at 2014-06-03T23:19
Table of Contents
鋒面系統如預期的今天南下到台灣上空,
鋒面南壓的強迫舉升作用遇上來自南海副高壓邊緣北上的暖濕水氣,
鋒面帶上一直有中小尺度對流消消長長,
中小尺度對流的消長週期變化正好跳過北台灣,反而在中部沿海長出強對流,
並且隨著鋒面南下而持續南壓,降雨最強的地方正好落在了彰化以南到嘉義一帶,
南高屏山區的雨勢也不小,北台灣幸運逃過一次,
像這種中小尺度對流降雨的位置並不好預測,有沒有中獎真的只能看運氣,
即使是5km的小尺度模式預測也不見得可以抓得到這種對流的發展位置及強度,
因此在作預報的時候會以預測一個"範圍"為主,
在這個範圍內容易有中小尺度對流爆發,通常是鋒面的前後,或是高空槽線系統前方,
一旦這種適合中小尺度對流爆發的環境來到台灣附近,就會特別提醒大家注意,
目前來看鋒面的位置已經逐漸南下到中部南部交界一帶,
預估今晚到明天大致位於南部上空,並且有繼續往巴士海峽緩慢南壓的趨勢,
因此今晚到明天周三(4日)要請中部、南部以及東南部的朋友特別注意,
比較容易爆發對流雲團的區域在這附近,留意可能發生的局部強降雨,
中部以北到東北部地區位於鋒後相對較乾且較為穩定的空氣內,
雲層偏多,但是降雨較少,可能要依賴白天的熱力來幫忙對流發展降雨,
因此要注意的是午後熱對流發展降雨的情況,
溫度方面在北台灣相對稍微低一點,明天白天高溫大約是27~28度,
中部以南高溫仍可能達到29~30度左右,
週四之後的情況明天再來聊,
以上先簡單供參考囉~
--
鋒面南壓的強迫舉升作用遇上來自南海副高壓邊緣北上的暖濕水氣,
鋒面帶上一直有中小尺度對流消消長長,
中小尺度對流的消長週期變化正好跳過北台灣,反而在中部沿海長出強對流,
並且隨著鋒面南下而持續南壓,降雨最強的地方正好落在了彰化以南到嘉義一帶,
南高屏山區的雨勢也不小,北台灣幸運逃過一次,
像這種中小尺度對流降雨的位置並不好預測,有沒有中獎真的只能看運氣,
即使是5km的小尺度模式預測也不見得可以抓得到這種對流的發展位置及強度,
因此在作預報的時候會以預測一個"範圍"為主,
在這個範圍內容易有中小尺度對流爆發,通常是鋒面的前後,或是高空槽線系統前方,
一旦這種適合中小尺度對流爆發的環境來到台灣附近,就會特別提醒大家注意,
目前來看鋒面的位置已經逐漸南下到中部南部交界一帶,
預估今晚到明天大致位於南部上空,並且有繼續往巴士海峽緩慢南壓的趨勢,
因此今晚到明天周三(4日)要請中部、南部以及東南部的朋友特別注意,
比較容易爆發對流雲團的區域在這附近,留意可能發生的局部強降雨,
中部以北到東北部地區位於鋒後相對較乾且較為穩定的空氣內,
雲層偏多,但是降雨較少,可能要依賴白天的熱力來幫忙對流發展降雨,
因此要注意的是午後熱對流發展降雨的情況,
溫度方面在北台灣相對稍微低一點,明天白天高溫大約是27~28度,
中部以南高溫仍可能達到29~30度左右,
週四之後的情況明天再來聊,
以上先簡單供參考囉~
--
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颱風
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