天氣概況~2009/03/13~冷鋒接近中~ - 颱風討論

By Quintina
at 2009-03-13T09:30
at 2009-03-13T09:30
Table of Contents
昨天隨著中高層暖脊延伸到台灣附近
加上地面變性高壓東移到日本一帶~地面轉偏南風
暖平流勢力大為加強的情況下~西半部的天氣終於放晴
但是底層有霧霾的現象~使得天空灰濛濛的~空氣品質並不好
東半部沿海則仍然有不少地形降雨回波活動~宜蘭花蓮到東北角一帶有降雨現象
蘇花沿岸的降雨還蠻明顯的~普遍有40~60毫米左右
昨天凌晨後隨著風向繼續轉變~西南風逐漸起來~宜蘭花蓮的降雨也少了下來
溫度部份昨天也普遍回升
大多數地方的高溫都達到25~27度左右~台北盆地內還高於27度
這樣的好天氣大概可以維持到今天上午
隨著華北西風槽很快的向東移動~
槽後冷空氣南下跟暖空氣交會產生的鋒面目前在長江流域~
清晨的雲圖來看已經進入江南~正在繼續東移南壓中
中午過後北台灣的雲量預期會慢慢增加
傍晚前鋒面就可能會到達北部近海~降雨的情況將陸續出現
中部跟東部的雲量在傍晚前也將逐漸增多起來~下雨的時間則應該要到晚上
今晚受鋒面通過的影響~中部北部東北部東部將是陰有陣雨的天氣
並且有局部較大雨勢出現的可能~特別是在中北部的山區
仍不排除會有打雷的機會~提醒中北部的朋友今晚出門要多留意
南部東南部受影響會比較小~不過今晚雲量仍會增多~部份地區有短暫陣雨
溫度的部份看起來降溫的時間會比較延後了
因為鋒面影響的時間比較晚~白天的高溫仍然升得上去
各地高溫跟昨天類似~甚至在鋒前暖區作用下還有可能更高一些
今晚鋒面到達開始下雨後溫度就會轉涼~不過真正感覺冷應該要到明天週六
鋒面大概明天清晨到上午就會逐漸通過離開~
目前還位於蒙古的大陸冷高壓很快會往南衝下來~分裂高壓中心將建立在長江中游
因此明天受到冷氣團籠罩~各地溫度都偏低
雖然鋒面離開~空氣轉趨乾燥~天空雲量可望慢慢減少~甚至陽光也會逐漸透出來
但是冷空氣南侵最強的時間可能正好落在明天白天
白天高溫應該會比原本預估的更低~北台灣可能只有15度上下
中部跟東部約17~18度~南部東南部受影響較小~大概還有20度以上的高溫
溫度場預測來看850百帕3度線大概明天清晨到上午會壓到北台灣
之後慢慢開始北退~到明晚大約是6度線在北台灣
照經驗來看這樣的變化過程在底下的溫度都是偏低的
整個冷的時間都往後延~特別提醒大家要多注意
天氣轉好的時間也比較延後~明天上午鋒面慢慢遠離後各地天氣才會好轉
只剩下迎風面地區還有些地形降雨的機會
打算出門的朋友又怕遇到下雨的朋友可能要注意一下
明晚到後天(週日~15號)清晨溫度仍低
特別是天氣放晴~冷空氣也充分南下~風速減小後
西半部東北部空曠地區要注意輻射冷卻作用的出現
低溫有機會在這段時間內降到11~12度左右
週日白天隨著地面高壓出海~東北風逐漸減弱並轉吹東風
溫度回升的情況將會比較明顯~北台灣仍有些涼意~中南部則會比較溫暖起來
天氣方面則會更好~只有東北部東部有零星降雨的機會
其他地方可望都是晴或多雲的型態
下週目前來看大概到週四以前都是在高壓回流南風的影響下
中高層也有太平洋高壓脊再度北伸的情況
將有3~4天比較晴朗而且暖熱的天氣
再來的鋒面系統要到下週五(20號)才會南壓到台灣附近
到時天氣才有新的變化會出現
以上簡單供參考囉~
--
加上地面變性高壓東移到日本一帶~地面轉偏南風
暖平流勢力大為加強的情況下~西半部的天氣終於放晴
但是底層有霧霾的現象~使得天空灰濛濛的~空氣品質並不好
東半部沿海則仍然有不少地形降雨回波活動~宜蘭花蓮到東北角一帶有降雨現象
蘇花沿岸的降雨還蠻明顯的~普遍有40~60毫米左右
昨天凌晨後隨著風向繼續轉變~西南風逐漸起來~宜蘭花蓮的降雨也少了下來
溫度部份昨天也普遍回升
大多數地方的高溫都達到25~27度左右~台北盆地內還高於27度
這樣的好天氣大概可以維持到今天上午
隨著華北西風槽很快的向東移動~
槽後冷空氣南下跟暖空氣交會產生的鋒面目前在長江流域~
清晨的雲圖來看已經進入江南~正在繼續東移南壓中
中午過後北台灣的雲量預期會慢慢增加
傍晚前鋒面就可能會到達北部近海~降雨的情況將陸續出現
中部跟東部的雲量在傍晚前也將逐漸增多起來~下雨的時間則應該要到晚上
今晚受鋒面通過的影響~中部北部東北部東部將是陰有陣雨的天氣
並且有局部較大雨勢出現的可能~特別是在中北部的山區
仍不排除會有打雷的機會~提醒中北部的朋友今晚出門要多留意
南部東南部受影響會比較小~不過今晚雲量仍會增多~部份地區有短暫陣雨
溫度的部份看起來降溫的時間會比較延後了
因為鋒面影響的時間比較晚~白天的高溫仍然升得上去
各地高溫跟昨天類似~甚至在鋒前暖區作用下還有可能更高一些
今晚鋒面到達開始下雨後溫度就會轉涼~不過真正感覺冷應該要到明天週六
鋒面大概明天清晨到上午就會逐漸通過離開~
目前還位於蒙古的大陸冷高壓很快會往南衝下來~分裂高壓中心將建立在長江中游
因此明天受到冷氣團籠罩~各地溫度都偏低
雖然鋒面離開~空氣轉趨乾燥~天空雲量可望慢慢減少~甚至陽光也會逐漸透出來
但是冷空氣南侵最強的時間可能正好落在明天白天
白天高溫應該會比原本預估的更低~北台灣可能只有15度上下
中部跟東部約17~18度~南部東南部受影響較小~大概還有20度以上的高溫
溫度場預測來看850百帕3度線大概明天清晨到上午會壓到北台灣
之後慢慢開始北退~到明晚大約是6度線在北台灣
照經驗來看這樣的變化過程在底下的溫度都是偏低的
整個冷的時間都往後延~特別提醒大家要多注意
天氣轉好的時間也比較延後~明天上午鋒面慢慢遠離後各地天氣才會好轉
只剩下迎風面地區還有些地形降雨的機會
打算出門的朋友又怕遇到下雨的朋友可能要注意一下
明晚到後天(週日~15號)清晨溫度仍低
特別是天氣放晴~冷空氣也充分南下~風速減小後
西半部東北部空曠地區要注意輻射冷卻作用的出現
低溫有機會在這段時間內降到11~12度左右
週日白天隨著地面高壓出海~東北風逐漸減弱並轉吹東風
溫度回升的情況將會比較明顯~北台灣仍有些涼意~中南部則會比較溫暖起來
天氣方面則會更好~只有東北部東部有零星降雨的機會
其他地方可望都是晴或多雲的型態
下週目前來看大概到週四以前都是在高壓回流南風的影響下
中高層也有太平洋高壓脊再度北伸的情況
將有3~4天比較晴朗而且暖熱的天氣
再來的鋒面系統要到下週五(20號)才會南壓到台灣附近
到時天氣才有新的變化會出現
以上簡單供參考囉~
--
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