春雨綿綿~102/04/11
今天總算把事情忙到一個段落~來聊聊天氣狀況~
如昨天預期的~雖然鋒面已經遠離~但是華南到台灣一帶仍持續存在冷暖交界面~
上一波西風大槽的加強南伸至今仍餘波盪漾~
從北方不斷有冷空氣往南輸送~但又不是很強~
因此下到華南後就跟南海北上的暖濕空氣相會而產生交界面的雲雨帶
由探空看起來台灣中北部的大氣相當潮濕~
雖然不具有太明顯的鋒面特徵~但是因為水氣甚多~
只要稍微有些舉升的動力就容易產生雲雨帶~
因此中部以北到東北部東部等地今天都有降雨出現~
降雨的量沒有特別大~不過維持時間很長~降雨範圍又很廣~感覺相當煩人~
目前看起來今晚到明天上午這段時間降雨的狀況仍然比較多~
中部北部東北部東部持續陰雨綿綿~從回波形態看起來都是層狀降水~
因此雨勢不會特別大~但一整晚累積下來仍有一定程度的量~
地勢較低的地方或是山區的朋友仍要注意一下~
明天上午過後~目前台灣附近比較明顯的降雨區應該會逐漸東移出去~
冷高壓中心慢慢從長江中下游地區向東移動進入東海~台灣附近風向轉東風~
冷空氣的強度會漸趨減弱~雲雨帶發展的狀況也會比較緩和~位置稍微北抬~
中部北部地區的降雨狀況有機會減少下來~不過應該還不會完全停止~
東北部東部仍是偏東風的迎風面~預估還是會有較大的短暫陣雨機會~
今天因為降雨明顯的關係~台北感覺還蠻涼冷的~不少地方的溫度也同樣低於預期~
明天白天降雨較為減少~冷空氣也減弱~溫度就會比今天要回升~
但還不會一下子就溫暖起來~特別是北台灣還是比較涼的情況~
白天高溫大概也只有20~22度左右~
中部地區的高溫預估在23~25度間~南部仍可能達到26~27度的高溫~
南北之間的溫差還是較大~南來北往的朋友請特別注意~
從最新的預報資料來看~週六隨著高壓更往東移~風向可望再轉為東南風~
華南的冷暖交界面位置會更往北抬一些~雲雨帶也會隨之北移調整~
北台灣仍可能受到雲帶邊緣影響~有局部短暫陣雨~
花東地區因為是迎風面~因此也會有些局部降雨的機會~
中南部天氣就比較好了~以多雲到晴為主~
溫度將更為回升~北台灣可望變的較為舒適到溫暖~
風向轉東南風後~有可能在台灣北部海面形成地形背風的低壓波動系統~
週六晚間到週日上午這段期間低壓波動將逐漸向東北東移動~進入琉球海域~
冬天時有這樣的小擾動出現時可能影響不大~
但是春天時這樣的小擾動就必須要注意一下了~
特別是從北部海面向東移動的過程中有所加深的時候~
拖尾的部分很可能造成中北部到東北部地區的天氣出現一次變化~
預估週六晚間到週日上午之間在中北部到東北部一帶降雨會增多~
不排除有局部較大雨勢出現的機會~
週日下午之後擾動很快的東移遠離~天氣狀況才會逐漸恢復穩定~
溫度在週末這兩天變化不大~中部南部仍是比較溫暖一些~
明天早上有時間寫文的話再繼續聊~
以上先供大家參考囉~
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 111.249.194.36
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