高壓緩慢西伸,周四起降雨漸少~2015/07/28 - 颱風討論

By Linda
at 2015-07-28T17:17
at 2015-07-28T17:17
Table of Contents
(這幾天有些文章沒有轉過來,有興趣的朋友可以到臉書參考)
今天受到高空冷心低壓影響,大氣狀態相當不穩定,
中午過後各地山區又冒出了旺盛的午後熱對流,不少地方有大雷雨發生,
甚至出現了局部冰雹的現象,
冰雹的發生表示大氣中對流活動旺盛,冰珠不斷在雲中翻滾長大,
直到上升氣流支撐不住而掉落,到達地面前尚未融化就成為冰雹,
對流活動旺盛的主因自然就是冷心低壓的動力條件
以及陽光加熱的熱力條件共同配合而造成。
預估高空冷心低壓會繼續向西移動,明天(29日)冷心低壓的中心會通過台灣上空,
並且繼續往大陸方向移動,相對於冷心低壓的中心外圍有利於上升運動的發生,
冷心低壓的中心區域反而是屬於下沉的運動,
所以冷低的中心往往是雲層少且空洞的區域,
明天這個區域將來到台灣上空,雖然還是有可能出現午後雷雨的現象,
但是就預報及以往的經驗來看,午後雷雨的降雨程度應該會比這兩天要緩和,
不過還是請大家明天午後出門要帶著雨具,並且多留意實際的天氣變化情況,
如果遇到雷雨請盡快到安全的地方暫時躲避比較好。
後天(30日)起,冷心低壓逐漸移向大陸且趨於減弱,
太平洋高壓主體的部分跟著緩慢向西推進來,因此午後雷雨的狀況應該會更為減少,
並且逐漸縮減到以山區為主,降雨量也跟著降低,
大部分平地可能會變成一整天都是晴到多雲,高溫酷熱的天氣型態,
預估這種天氣型態可能會持續數天以上的時間,
直到高壓再度減弱,或是有其他天氣系統影響為止。
目前在遠洋上有熱帶擾動正在醞釀,
未來幾天有機會逐漸發展為熱帶低壓甚至是下一個颱風,
但是距離台灣非常遙遠,未來這一個禮拜內應該都還不會影響到台灣的天氣。
印度半島及中南半島一帶位於季風低壓槽內,有相當明顯的季風低壓在活動,
帶來暴雨以及強風,如果有計畫要前往這些地方活動的朋友務必要多加注意。
以上簡單供參考囉~
http://i.imgur.com/IPkRR52.jpg
--
今天受到高空冷心低壓影響,大氣狀態相當不穩定,
中午過後各地山區又冒出了旺盛的午後熱對流,不少地方有大雷雨發生,
甚至出現了局部冰雹的現象,
冰雹的發生表示大氣中對流活動旺盛,冰珠不斷在雲中翻滾長大,
直到上升氣流支撐不住而掉落,到達地面前尚未融化就成為冰雹,
對流活動旺盛的主因自然就是冷心低壓的動力條件
以及陽光加熱的熱力條件共同配合而造成。
預估高空冷心低壓會繼續向西移動,明天(29日)冷心低壓的中心會通過台灣上空,
並且繼續往大陸方向移動,相對於冷心低壓的中心外圍有利於上升運動的發生,
冷心低壓的中心區域反而是屬於下沉的運動,
所以冷低的中心往往是雲層少且空洞的區域,
明天這個區域將來到台灣上空,雖然還是有可能出現午後雷雨的現象,
但是就預報及以往的經驗來看,午後雷雨的降雨程度應該會比這兩天要緩和,
不過還是請大家明天午後出門要帶著雨具,並且多留意實際的天氣變化情況,
如果遇到雷雨請盡快到安全的地方暫時躲避比較好。
後天(30日)起,冷心低壓逐漸移向大陸且趨於減弱,
太平洋高壓主體的部分跟著緩慢向西推進來,因此午後雷雨的狀況應該會更為減少,
並且逐漸縮減到以山區為主,降雨量也跟著降低,
大部分平地可能會變成一整天都是晴到多雲,高溫酷熱的天氣型態,
預估這種天氣型態可能會持續數天以上的時間,
直到高壓再度減弱,或是有其他天氣系統影響為止。
目前在遠洋上有熱帶擾動正在醞釀,
未來幾天有機會逐漸發展為熱帶低壓甚至是下一個颱風,
但是距離台灣非常遙遠,未來這一個禮拜內應該都還不會影響到台灣的天氣。
印度半島及中南半島一帶位於季風低壓槽內,有相當明顯的季風低壓在活動,
帶來暴雨以及強風,如果有計畫要前往這些地方活動的朋友務必要多加注意。
以上簡單供參考囉~
http://i.imgur.com/IPkRR52.jpg

--
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