水氣持續偏多~周日前偏冷~102/12/19
睡前很簡單來聊一下天氣~
因為南支槽東移過程中淺化~因此台灣並沒有轉為槽後乾燥的西北風~
在700百帕以上反而持續是偏西風~甚至有些西南西風~
南海到菲律賓一帶受冷空氣刺激而活躍發展的對流雲水氣順著氣流北飄上來~
加上東北季風持續吹~迎風面也會有地形低雲堆積~
看來未來這兩三天內(包括周末期間)台灣附近都是雲量偏多的狀況~
雲一多就容易下點雨~特別是底層北風到東北風的迎風面上~
雨勢不大~但是一整天斷斷續續都會有些小雨到飄雨的機會~還蠻煩人的天氣..囧
因為雲層從西南邊飄過來~中南部雖然是東北風的背風面~
不過看起來天氣也不算是太穩定~跟以往典型的東北季風情況有些不太一樣~
山區有局部降雨的機會~平地也可能有局部性的短暫降雨發生~
特別是有回波掠過的地方~降雨的位置比較不固定~
溫度的方面看起來一直到周日可能都是偏涼到偏冷的狀況~
地面冷高壓中心一直無法出海~台灣附近持續吹著偏北到東北風~
850百帕溫度場的0度線持續徘徊在距離北部不遠的海面上~
風向跟等溫線交角明顯~冷平流可能會維持較長的時間~
白天溫度不易升高~特別是北台灣地區~
夜晚清晨則是各地都要注意較低的溫度發生~
尤其在中部以北到東北部地區~有可能下探到11度上下~
下周一以後溫度能否回升可能還要看地面高壓中心有沒有出海東移~
目前的模式預報看起來似乎...機會不大..XD
以上先簡單供參考囉~
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◆ From: 111.241.44.38
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12/20 00:11, , 1F
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