持續注意午後大雷雨~2016/09/10 - 颱風討論

By Harry
at 2016-09-10T10:00
at 2016-09-10T10:00
Table of Contents
昨天受到滯留鋒面(北風跟南風的輻合線)靠近北台灣的影響,
大氣狀態不穩定,加上水氣充沛,很多地方都出現了大雷雨的狀態,
特別是先前降雨比較少的北部、東北部地區,雨勢一直下到晚上才趨緩。
今天看起來滯留鋒面還在北部近海,雖然說北邊的北風正在減弱,
整個鋒面的結構也變差,但是大氣依舊不穩定,
西半部沿海仍有從海峽上移入零星對流降雨的機會,
主要則是午後配合熱力作用催化所出現的大雷雨,
尤其是中部、北部、東北部跟東部地區,提醒大家今天外出仍要記得攜帶雨具以防萬一。
目前在關島附近的熱帶性低氣壓16W持續發展中,
今天到明天之間可能升格為今年第14號颱風莫蘭蒂,
由於目前16W西北方有高氣壓單體存在,加上接下來太平洋高氣壓有西伸增強趨勢,
終於要回歸到這個季節比較正常該有的位置跟型態,
預估莫蘭蒂將朝向西北西方向移動,趨向台灣東南方海面,
下周二(13日)將來到台灣東南方,
此時高壓如果西伸幅度夠大,颱風可能繼續往台灣方向靠近,
反之高壓西伸幅度不夠,配合北方短波槽東移牽引,颱風可能往北偏轉,
掠過東部外海北上,目前這兩種路徑的變數都存在,
全球模式結果較偏向後者(北轉),區域模式的結果則偏向前者(偏西趨向台灣),
關鍵日期大概就落在下周一到二之間的狀況,
觀察過去一段時間的模式預測變化,似乎有慢慢趨向偏西的跡象,
不過還是再繼續觀察看看,提醒大家未來幾天要多留意最新的天氣訊息,
保留中秋假期的活動安排彈性,隨時做調整。
以上簡單供參考~
--
大氣狀態不穩定,加上水氣充沛,很多地方都出現了大雷雨的狀態,
特別是先前降雨比較少的北部、東北部地區,雨勢一直下到晚上才趨緩。
今天看起來滯留鋒面還在北部近海,雖然說北邊的北風正在減弱,
整個鋒面的結構也變差,但是大氣依舊不穩定,
西半部沿海仍有從海峽上移入零星對流降雨的機會,
主要則是午後配合熱力作用催化所出現的大雷雨,
尤其是中部、北部、東北部跟東部地區,提醒大家今天外出仍要記得攜帶雨具以防萬一。
目前在關島附近的熱帶性低氣壓16W持續發展中,
今天到明天之間可能升格為今年第14號颱風莫蘭蒂,
由於目前16W西北方有高氣壓單體存在,加上接下來太平洋高氣壓有西伸增強趨勢,
終於要回歸到這個季節比較正常該有的位置跟型態,
預估莫蘭蒂將朝向西北西方向移動,趨向台灣東南方海面,
下周二(13日)將來到台灣東南方,
此時高壓如果西伸幅度夠大,颱風可能繼續往台灣方向靠近,
反之高壓西伸幅度不夠,配合北方短波槽東移牽引,颱風可能往北偏轉,
掠過東部外海北上,目前這兩種路徑的變數都存在,
全球模式結果較偏向後者(北轉),區域模式的結果則偏向前者(偏西趨向台灣),
關鍵日期大概就落在下周一到二之間的狀況,
觀察過去一段時間的模式預測變化,似乎有慢慢趨向偏西的跡象,
不過還是再繼續觀察看看,提醒大家未來幾天要多留意最新的天氣訊息,
保留中秋假期的活動安排彈性,隨時做調整。
以上簡單供參考~
--
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