高壓偏弱,未來一周低壓帶籠罩~2015/07/13 - 颱風討論

By William
at 2015-07-13T17:01
at 2015-07-13T17:01
Table of Contents
自從開始氣象的工作之後,每當有劇烈天氣發生的時候就是最忙的時候,
看來以往能即時跟大家討論分享的日子應該是回不去了,
以後颱風來襲時就靠大家繼續討論啦~~
----------------------------------------------------------------------
上週好不容易送走兩個颱風,雖然都過門不入,
但是外圍環流還是分別給台灣南北帶來不少的降雨,及時補充了6月份以來缺乏的雨水。
目前在海面上還是有兩個颱風,分別是已經存在超過一周的南卡颱風,
以及今天上午跨過換日線進入西北太平洋而成為第12號颱風的哈洛拉颱風。
南卡颱風昨天已經逐漸走到太平洋高壓的西側盡頭,
開始減速並且順著高壓邊緣轉向偏北移動,預估未來大致就是繼續北上,
朝向日本西部區域前進,可能在周末期間侵襲九州、四國、本州西部等地,
由於昌鴻颱風減弱後留下的深槽線正在靠近南卡颱風,
受到槽前正渦度平流以及良好輻散條件的幫助,
南卡颱風未來2~3天內強度有再度增強的趨勢,
不過隨著颱風位置逐漸北上後,海溫的條件較差,
應該不至於再度發展為強烈颱風,
這個颱風範圍相當大,未來雖然主要是影響西日本,
但是包括關東一帶都可能受到颱風外圍環流影響,計畫赴日的朋友務必多留意。
至於今天剛剛進入西北太平洋的"進口颱風"哈洛拉,
目前看起來環流不大,不過結構蠻完整的,
未來將要經過的區域適合颱風發展,預估強度也會持續加強。
3~5天內大致沿著太平洋高壓南側邊緣前進,至於能夠往西走到哪個位置還有待觀察,
因為距離台灣遙遠,對天氣並沒有任何影響。
今天台灣附近仍是延續過去兩天的西南風環境,水氣偏多,加上太平洋高壓偏弱,
台灣位於相對低壓帶內,大氣狀態不穩定,
因此除了清晨時西南風迎風面的輻合帶降雨以外,
中午過後在各地山區普遍有旺盛的熱對流發展,出現了局部大雷雨的現象,
屏東、台東部分山區的小時雨量甚至超過70毫米,降雨強度頗為驚人。
依照目前的預報資料來看,未來這一周太平洋高壓強度都偏弱,
台灣附近大致都在低壓帶的範圍內,天氣狀況持續不穩定。
預估週二到週四(14~16日)主要留意午後的大雷雨現象,
周五(17日)起到周末期間(18~19日)隨著南卡颱風北上侵襲日本,
台灣附近的西南風明顯增強,低壓帶也會更為活躍,各地的天氣都不穩定,
中南部地區尤其要注意是否出現較為明顯的降雨現象,
不過還有好幾天的時間,未來預報的變化還有待觀察留意。
整體來看本周天氣狀態不穩定,特別是到了周末期間又會比前面幾天更糟一些,
有任何計畫安排的朋友都要多注意囉。
以上簡單供參考~
http://i.imgur.com/gINeK36.jpg
--
看來以往能即時跟大家討論分享的日子應該是回不去了,
以後颱風來襲時就靠大家繼續討論啦~~
----------------------------------------------------------------------
上週好不容易送走兩個颱風,雖然都過門不入,
但是外圍環流還是分別給台灣南北帶來不少的降雨,及時補充了6月份以來缺乏的雨水。
目前在海面上還是有兩個颱風,分別是已經存在超過一周的南卡颱風,
以及今天上午跨過換日線進入西北太平洋而成為第12號颱風的哈洛拉颱風。
南卡颱風昨天已經逐漸走到太平洋高壓的西側盡頭,
開始減速並且順著高壓邊緣轉向偏北移動,預估未來大致就是繼續北上,
朝向日本西部區域前進,可能在周末期間侵襲九州、四國、本州西部等地,
由於昌鴻颱風減弱後留下的深槽線正在靠近南卡颱風,
受到槽前正渦度平流以及良好輻散條件的幫助,
南卡颱風未來2~3天內強度有再度增強的趨勢,
不過隨著颱風位置逐漸北上後,海溫的條件較差,
應該不至於再度發展為強烈颱風,
這個颱風範圍相當大,未來雖然主要是影響西日本,
但是包括關東一帶都可能受到颱風外圍環流影響,計畫赴日的朋友務必多留意。
至於今天剛剛進入西北太平洋的"進口颱風"哈洛拉,
目前看起來環流不大,不過結構蠻完整的,
未來將要經過的區域適合颱風發展,預估強度也會持續加強。
3~5天內大致沿著太平洋高壓南側邊緣前進,至於能夠往西走到哪個位置還有待觀察,
因為距離台灣遙遠,對天氣並沒有任何影響。
今天台灣附近仍是延續過去兩天的西南風環境,水氣偏多,加上太平洋高壓偏弱,
台灣位於相對低壓帶內,大氣狀態不穩定,
因此除了清晨時西南風迎風面的輻合帶降雨以外,
中午過後在各地山區普遍有旺盛的熱對流發展,出現了局部大雷雨的現象,
屏東、台東部分山區的小時雨量甚至超過70毫米,降雨強度頗為驚人。
依照目前的預報資料來看,未來這一周太平洋高壓強度都偏弱,
台灣附近大致都在低壓帶的範圍內,天氣狀況持續不穩定。
預估週二到週四(14~16日)主要留意午後的大雷雨現象,
周五(17日)起到周末期間(18~19日)隨著南卡颱風北上侵襲日本,
台灣附近的西南風明顯增強,低壓帶也會更為活躍,各地的天氣都不穩定,
中南部地區尤其要注意是否出現較為明顯的降雨現象,
不過還有好幾天的時間,未來預報的變化還有待觀察留意。
整體來看本周天氣狀態不穩定,特別是到了周末期間又會比前面幾天更糟一些,
有任何計畫安排的朋友都要多注意囉。
以上簡單供參考~
http://i.imgur.com/gINeK36.jpg

--
Tags:
颱風
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