天氣速觀:大台北地區的豪雨 - 颱風討論
By Doris
at 2019-09-28T08:27
at 2019-09-28T08:27
Table of Contents
天氣速觀:大台北地區的豪雨
氣象局已發布大台北的豪雨特報,
東北風影響,易有短時強降雨,
今(28)日臺北市、新北市地區及基隆北海岸有局部大雨或豪雨,
宜蘭地區有局部大雨發生的機率,請注意雷擊及強陣風,
山區請慎防坍方、落石及溪水暴漲,低窪地區請慎防淹水。
從昨晚到今天,大台北地區的豪雨,
從氣象局的豪雨特報看也只有東北風,
其實連模式預報也是黑人問號!
前兩天宜蘭地區的豪雨可見"低空噴流"的出現,
因此出現破300的大豪雨,這是很好理解的。
但昨晚至今,大氣中低層已無"低空噴流",
純粹是地面秀的天下:
由原先東北風和偏東風的輻合,
因地面層出現的東風波擾動和東北風的"輻合",
於是降雨區就北移至大台北地區。
只能說秋季就愛地面秀,有時難以預報
就像春季的高空秀,有時也難以捉摸。
苦主北部/東北部習慣就好囉
--
氣象局已發布大台北的豪雨特報,
東北風影響,易有短時強降雨,
今(28)日臺北市、新北市地區及基隆北海岸有局部大雨或豪雨,
宜蘭地區有局部大雨發生的機率,請注意雷擊及強陣風,
山區請慎防坍方、落石及溪水暴漲,低窪地區請慎防淹水。
從昨晚到今天,大台北地區的豪雨,
從氣象局的豪雨特報看也只有東北風,
其實連模式預報也是黑人問號!
前兩天宜蘭地區的豪雨可見"低空噴流"的出現,
因此出現破300的大豪雨,這是很好理解的。
但昨晚至今,大氣中低層已無"低空噴流",
純粹是地面秀的天下:
由原先東北風和偏東風的輻合,
因地面層出現的東風波擾動和東北風的"輻合",
於是降雨區就北移至大台北地區。
只能說秋季就愛地面秀,有時難以預報
就像春季的高空秀,有時也難以捉摸。
苦主北部/東北部習慣就好囉
--
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