鳳凰明晨中心可能登陸南部沿海~2014/09/20 - 颱風討論

By Belly
at 2014-09-20T23:03
at 2014-09-20T23:03
Table of Contents
今天快要過完,來做個鳳凰颱風的簡單提醒
1.鳳凰颱風因為今天白天的結構重整,速度一度緩慢,影響時間延後,
暴風圈邊緣到晚間8點左右才接觸到恆春半島,
中心登陸時間也將延後,可能拖到明天清晨左右。
2.目前颱風仍然受到東側高壓引導氣流向北移動,環境方面改變不大,
因此預估仍將大致趨向高屏沿海一帶。
今日颱風高空輻散通道比先前更好,但是對流雲團的爆發情況卻不盡理想,
結構重整後整體螺旋性變好,不過對流組織還是鬆鬆散散的情況,
CISK機制發揮效果仍然較差,強度在登陸前增強幅度可能有限了。
3.因為颱風中心預估仍將趨向高屏一帶,
南部地區以及面迎逆時針氣旋氣流東南風的花東地區仍將是衝擊最大的區域,
隨著颱風靠近,風雨將持續增強,一定要嚴加戒備。
中部地區及宜蘭地區隨著暴風圈北上,明晨過後風雨情況也將加大,
北部地區受影響時間相對較晚,明天白天開始感受應該就會比較明顯。
4.颱風中心逼近陸地後,要注意跟陸地之間的互動情況,
仍不能排除受地形干擾導致中心亂跑或副中心取代等等的可能性,
會不會如各單位預期這麼平順的南北向大縱走還是有待觀察。
以上簡單供參考囉~
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