瑪瑙颱風-10/09/04
今天早上到公司開月會~就沒有時間發文了~
大家都很關注瑪瑙颱風的變化~
不過這颱風從發展出來後就告訴大家應該是蠻單純的
華北有西風槽東移~雖然強度有限沒辦法造成高壓大幅度東退~
但是已經足以讓高壓邊緣停留在華東沿岸以東~
加上高壓南緣偏北~就算颱風找到高壓邊緣引導轉西北西~緯度也已經偏高
因此一開始就判斷應該會朝琉球~東海然後繼續北上的拋物線路徑
從高清晰的連續雲圖上來看~氣流轉彎處其實一直都沒有太大變化
大致都在宮古島到那霸之間~
當然昨天瑪瑙的速度較快~因此衝到比較偏西一點的位置
但是仍然如預期的到了那霸以南後開始順著氣流轉彎處北上 (可參考昨天文章附圖)
這颱風結構不佳~到目前仍然跟台灣近海的高空冷低糾纏不清~
因此定位上各單位的差異較大~不過進入JMA雷達範圍後~大致已經可以抓到環流旋轉中心
現在中心大約在那霸南南西方海面~預估仍會繼續順著高壓邊緣引導往西北到北北西移動
經過宮古那霸之間的海域後進入東海~跟最初的預期差不多
今天北部有些颱風外圍的雲進來~但是都很淺薄~基本上沒下什麼雨
昨天有提醒中南部山區要注意午後熱對流發展~
目前來看配合冷心低壓造成的大氣不穩定環境~熱對流已經發展出來了
請新竹以南的朋友要注意熱對流的降雨~以及瞬間大雨的情況
今晚以後颱風繼續往東海北上~季風槽帶來的西南風水氣可能逐漸接近南部
明天中部南部看來都會有迎風面的短暫陣雨~
北部東半部則可能要留意午後熱對流降雨~
不過如果颱風帶來的西北乾風較強下沉明顯~北台灣的降雨就會比較不明顯
下週以後季風槽在台灣附近~除了天氣會相當不穩定外~
還可能有新的熱帶低壓或颱風在台灣附近發展出現
這一點也跟大家提醒了好幾天~目前的看法仍然不變
以上簡單供參考囉~
http://ppt.cc/WmaG
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 118.165.2.252
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