天氣概況~2013/07/07 - 颱風討論

By Lauren
at 2013-07-07T07:39
at 2013-07-07T07:39
Table of Contents
這兩天因為太平洋高壓強度如先前預期的稍微減弱~
台灣附近吹偏南到西南風~水氣比較多的關係~
午後熱對流發展的還蠻旺盛的~
主要的降雨仍然偏在山區~不過對流發展後隨偏南風往北擴散~
中北部的平地也有不少地方出現明顯的午後雷雨~
昨天下午在中和的雷雨就相當劇烈~一時間雷電交加還有狂風暴雨~聲勢驚人~
午後熱對流來的快但是去的也快~傍晚以後熱力效果減弱~對流很快就趨於消散~
目前看起來未來兩三天內這樣的夏季型天氣還是沒有太大改變~
今天一直到明後天(7~9號)台灣仍位於高壓邊緣~
風向持續吹偏南風為主~帶來的水氣仍較多~
午後各地山區容易有熱對流發展帶來雷雨的現象~
因為高壓較弱的關係~熱對流發展較為旺盛~因此還是會有較大雷雨的機會~
午後出門或是前往山區活動的朋友都要特別小心~
對流旺盛時不但有強降雨~還會有雷擊~強陣風甚至是冰雹現象~
記得要帶雨具~並且多留意雷達上的最新變化~
接下來要注意的就是目前位於關島東北方的擾動92W的變化了~
92W目前還是有點冷心低壓與熱帶擾動的混合性質~
高層的環流比較明顯~具有較為清楚的逆時針風場~
低層的環流還未完整建立~看起來仍是偏向半開放狀的東風波動型態~
因為現在西南季風偏弱~因此看起來沒有很明顯的水氣帶向92W輸送~
不過92W所在的海面海溫夠高~前方還有大片的30度以上暖水區域~
對流持續爆發的情況下~暖心建立~強度仍會逐漸發展~環流也會趨於完整~
明後天強度的發展現象就會明確許多~有機會成為今年的第7號颱風蘇力~
目前高壓較強的部分位於日本南方海面~
92W即將進入高壓以南~引導氣流明顯~
因此未來3~4天內大致都是偏西移動為主~迅速向台灣以東靠近~
週三(10號)來到琉球以南~週四(11號)就要緊跟著接近台灣東方海面了~
受到92W外圍下沉氣流影響~週三的午後雷雨將減少許多~
週四白天的天氣應該也還不錯~有機會是颱風前藍天白雲的大景天氣~
不過隨著92W環流逼近~大概週四晚間起各地的天氣就要陸續變化了~
週五(12號)到週六(13號)將是92W最靠近台灣的時候~
因為屆時92W已經來到高壓末端~移動方向有慢慢開始向北順轉的機會~
轉向的地點~角度都關係到92W靠近台灣的程度~也會決定影響的大小~
預報仍有變化修正的可能~因此接下來兩三天內的變動都需要密切加以觀察~
以上先簡單供參考囉~
--
台灣附近吹偏南到西南風~水氣比較多的關係~
午後熱對流發展的還蠻旺盛的~
主要的降雨仍然偏在山區~不過對流發展後隨偏南風往北擴散~
中北部的平地也有不少地方出現明顯的午後雷雨~
昨天下午在中和的雷雨就相當劇烈~一時間雷電交加還有狂風暴雨~聲勢驚人~
午後熱對流來的快但是去的也快~傍晚以後熱力效果減弱~對流很快就趨於消散~
目前看起來未來兩三天內這樣的夏季型天氣還是沒有太大改變~
今天一直到明後天(7~9號)台灣仍位於高壓邊緣~
風向持續吹偏南風為主~帶來的水氣仍較多~
午後各地山區容易有熱對流發展帶來雷雨的現象~
因為高壓較弱的關係~熱對流發展較為旺盛~因此還是會有較大雷雨的機會~
午後出門或是前往山區活動的朋友都要特別小心~
對流旺盛時不但有強降雨~還會有雷擊~強陣風甚至是冰雹現象~
記得要帶雨具~並且多留意雷達上的最新變化~
接下來要注意的就是目前位於關島東北方的擾動92W的變化了~
92W目前還是有點冷心低壓與熱帶擾動的混合性質~
高層的環流比較明顯~具有較為清楚的逆時針風場~
低層的環流還未完整建立~看起來仍是偏向半開放狀的東風波動型態~
因為現在西南季風偏弱~因此看起來沒有很明顯的水氣帶向92W輸送~
不過92W所在的海面海溫夠高~前方還有大片的30度以上暖水區域~
對流持續爆發的情況下~暖心建立~強度仍會逐漸發展~環流也會趨於完整~
明後天強度的發展現象就會明確許多~有機會成為今年的第7號颱風蘇力~
目前高壓較強的部分位於日本南方海面~
92W即將進入高壓以南~引導氣流明顯~
因此未來3~4天內大致都是偏西移動為主~迅速向台灣以東靠近~
週三(10號)來到琉球以南~週四(11號)就要緊跟著接近台灣東方海面了~
受到92W外圍下沉氣流影響~週三的午後雷雨將減少許多~
週四白天的天氣應該也還不錯~有機會是颱風前藍天白雲的大景天氣~
不過隨著92W環流逼近~大概週四晚間起各地的天氣就要陸續變化了~
週五(12號)到週六(13號)將是92W最靠近台灣的時候~
因為屆時92W已經來到高壓末端~移動方向有慢慢開始向北順轉的機會~
轉向的地點~角度都關係到92W靠近台灣的程度~也會決定影響的大小~
預報仍有變化修正的可能~因此接下來兩三天內的變動都需要密切加以觀察~
以上先簡單供參考囉~
--
Tags:
颱風
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