高壓稍減弱,午後雷雨增多~2016/07/17 - 颱風討論

By Sarah
at 2016-07-17T08:36
at 2016-07-17T08:36
Table of Contents
昨天太平洋高氣壓勢力強大,午後對流發展明顯被壓制,
加上底層吹西南風,過山沉降後,在臺北盆地及花東縱谷有沉降增溫的現象出現,
最熱的地方在台北市,觀測到37.7度高溫,
走在戶外感覺就像是在火爐中一樣,快要融化了。
今天看起來因為有短波槽要通過台灣以北,太平洋高氣壓強度略減弱,
最明顯的變化應該是午後雷雨會增多,不僅是山區,平地也會有機會出現午後雷雨,
風向的關係,午後雷雨發展後往東、東北方向擴散的可能性高,
提醒大家下午出門要記得攜帶雨具,前往山區或溪流邊活動要提高警覺,小心安全。
原本在菲律賓東方的熱帶擾動91W已經逐漸靠近台灣東南方海域,
對流消消長長,在垂直風切影響下不太容易鞏固起來,
底層環流建立的不是很好,北、東側比較明顯,西、南側較弱,仍是一個波動的型態,
要明顯發展起來似乎條件不太理想,
預估今明兩天會在台灣以東順著太平洋高壓減弱的過程向北轉,仍然可以繼續觀察。
簡單供參考~
http://i.imgur.com/WVW5pOq.png
--
加上底層吹西南風,過山沉降後,在臺北盆地及花東縱谷有沉降增溫的現象出現,
最熱的地方在台北市,觀測到37.7度高溫,
走在戶外感覺就像是在火爐中一樣,快要融化了。
今天看起來因為有短波槽要通過台灣以北,太平洋高氣壓強度略減弱,
最明顯的變化應該是午後雷雨會增多,不僅是山區,平地也會有機會出現午後雷雨,
風向的關係,午後雷雨發展後往東、東北方向擴散的可能性高,
提醒大家下午出門要記得攜帶雨具,前往山區或溪流邊活動要提高警覺,小心安全。
原本在菲律賓東方的熱帶擾動91W已經逐漸靠近台灣東南方海域,
對流消消長長,在垂直風切影響下不太容易鞏固起來,
底層環流建立的不是很好,北、東側比較明顯,西、南側較弱,仍是一個波動的型態,
要明顯發展起來似乎條件不太理想,
預估今明兩天會在台灣以東順著太平洋高壓減弱的過程向北轉,仍然可以繼續觀察。
簡單供參考~
http://i.imgur.com/WVW5pOq.png

--
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