蘇拉颱風與地形影響 - 颱風討論
By Iris
at 2012-08-01T22:46
at 2012-08-01T22:46
Table of Contents
這是宜蘭的地形
http://ppt.cc/ZeE6
當颱風靠近時會在這裡產生地形缺口效應(也就是導引氣流不強,颱風很容易受到“地形
缺口效應"影響,順勢由缺口進入陸地,但東部地形比較明顯)會將颱風拉進,整體的大
氣環境前兩天也大概描述了一下可以參考#1G5psABg 文章,裡面有說明蘇拉會一開始
往東在慢慢往西跟往北。
目前蘇拉已經正式與台灣地形互相水乳交融,時間越晚越明顯。目前動態大致上是往西北
,但後續越愛上台灣斬颱刀時可能會出西北西甚至西南西旋轉一圈在登陸,這時是最糟
的狀況原因是時間又拉長了,所以今晚台灣的第一線東部地區以及東北地區將接受
嚴厲的考驗。而影響時間也將分成颱風登陸部分跟過山後的部份,
颱風登陸前跟登陸是影響的東部跟北部最大也由於颱風是逆時針旋轉
首當其衝是這些地區,這些山區累積雨量速度可能會非常快速,
請在下游民眾真的要特別注意,尤其與風向夾角大的山區應特別特別注意。
等颱風登陸的時間過後的是中部地區根竹苗是否有副中心出現,這是很關鍵
但機率可能出現大。第二部份也就是風過山後西半部變迎風面 東半部變背風面 西半部
的風雨正開始逐漸加大,這時中部山區嘉義山區與高屏山區雨量可能不輸北部與東北部山
區,所以請這些地區應嚴加戒備同時背風面應焚風的產生特別是花蓮宜蘭台東。
颱風影響時間大約多長?快大約一天半也就是禮拜5上半天就結束,但是中南部還是要嚴
防大雨,慢的話可能拖到禮拜5下午到傍晚這區間。如果在過程沒出現旋轉大致上可能會
加快影響速度,反之則延後。最後提醒大家沒事真的盡量別出門。
以上是個人看法 (P.S 主播現在不知道臉痛不痛跟腫不腫@@開玩笑的)
附上昨天早上圖來對照今天的走向
http://ppt.cc/DTpu
希望後面不要成真@@越看越毛
--
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