不穩定天氣持續,周末注意豪大雨~2015/08/27 - 颱風討論

By Valerie
at 2015-08-27T16:42
at 2015-08-27T16:42
Table of Contents
今天白天這個天氣系統的配置出現在8月份還真是比較少見的狀況,
天鵝颱風減弱變性後的溫帶氣旋停留在中國東北,
高空西風槽線往南伸展到長江中下游地區,台灣位於槽前,
太平洋高壓勢力較弱且位置偏東,高壓邊緣的西南風強風軸為台灣帶來豐沛水氣,
又遇上槽前不穩定大氣環境,結果就是在台灣附近有活躍的對流系統發展活動,
造成各地降雨不斷,有些地方雨勢還真的不小,時雨量都達到50~60毫米以上,
需要特別小心注意。
http://i.imgur.com/BefnxR9.jpg
目前來看這種強西南風帶來充沛水氣的狀況還會持續,
溫帶氣旋也將停留在中國東北盤旋,後續仍有高空西風短波槽會陸續東移,
因此明天到周末期間(28~30日),
甚至到下周一周二(31日~9月1日)可能都是不穩定容易下雨的天氣型態,
而且容易出現較大雨勢,有安排假日活動的朋友務必多加注意。
至於這種天氣型態算不算秋天到了? 個人是覺得有待商確
雖然高空系統看起來很活躍,但是地面上在槽後看不到很明顯的冷高壓中心
地面層北風強度也很有限,中國大陸上天氣放晴的地方高溫都還是超過30度以上
台灣附近主要是西南風、偏南風或東南風所控制,
未來兩三天看起來西南風還可能會更強勢一些,持續是南方來的暖濕氣流控場,
雖然下過雨後感覺較為偏涼,不過真要說是有冷空氣,似乎還是不太對,
天氣的好壞可能是比較主要的決定因素,
例如馬祖今天中午多雲,溫度接近31度,同一時間高雄正在下雨,溫度卻不到28度
如果真的要說入秋,可能至少得像2013年9月1號的天氣圖型態
http://i.imgur.com/DZLizhv.gif
有比較明顯的冷鋒以及後方的大陸高壓型態,比較符合入秋的樣子
簡單供參考囉~
--
天鵝颱風減弱變性後的溫帶氣旋停留在中國東北,
高空西風槽線往南伸展到長江中下游地區,台灣位於槽前,
太平洋高壓勢力較弱且位置偏東,高壓邊緣的西南風強風軸為台灣帶來豐沛水氣,
又遇上槽前不穩定大氣環境,結果就是在台灣附近有活躍的對流系統發展活動,
造成各地降雨不斷,有些地方雨勢還真的不小,時雨量都達到50~60毫米以上,
需要特別小心注意。
http://i.imgur.com/BefnxR9.jpg

目前來看這種強西南風帶來充沛水氣的狀況還會持續,
溫帶氣旋也將停留在中國東北盤旋,後續仍有高空西風短波槽會陸續東移,
因此明天到周末期間(28~30日),
甚至到下周一周二(31日~9月1日)可能都是不穩定容易下雨的天氣型態,
而且容易出現較大雨勢,有安排假日活動的朋友務必多加注意。
至於這種天氣型態算不算秋天到了? 個人是覺得有待商確
雖然高空系統看起來很活躍,但是地面上在槽後看不到很明顯的冷高壓中心
地面層北風強度也很有限,中國大陸上天氣放晴的地方高溫都還是超過30度以上
台灣附近主要是西南風、偏南風或東南風所控制,
未來兩三天看起來西南風還可能會更強勢一些,持續是南方來的暖濕氣流控場,
雖然下過雨後感覺較為偏涼,不過真要說是有冷空氣,似乎還是不太對,
天氣的好壞可能是比較主要的決定因素,
例如馬祖今天中午多雲,溫度接近31度,同一時間高雄正在下雨,溫度卻不到28度
如果真的要說入秋,可能至少得像2013年9月1號的天氣圖型態
http://i.imgur.com/DZLizhv.gif

有比較明顯的冷鋒以及後方的大陸高壓型態,比較符合入秋的樣子
簡單供參考囉~
--
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