Jason瘋英文 :回首頁

Precipitation continues to batter Taiwan (2013/05/21)

Forecasters warn that torrential rain could continue to fall during the next couple days over much of Taiwan. A brief break is expected on Friday before the arrival of another plum rain front.

A plum rain front packed with moisture drenched Taiwan with rain on Monday evening. But its effects were felt half a day later than forecasters had predicted. The front had been pulled apart by a low pressure system, splitting into two. It weakened though continued to bring precipitation to western Taiwan.

Wu Wan-hua
CWB Forecaster
It was split to the east and remains stationery to the west. This is a common occurrence that brings localized showers, and sometimes extreme weather. It can lead to mistakes when trying to predict rainfall levels.

The “extreme torrential rain” that was expected will not arrive, but the weather remains shaky. Central and southern Taiwan continue to see heavy rain.

Chiayi had the most precipitation on Tuesday at 149 millimeters. Torrential rain also fell in Yunlin and Nantou.

Torrential rain warnings remain in effect for western and northeastern portions of the island.

Wu Wan-hua
CWB Forecaster
The cloud band that will follow could still affect our weather. Afternoon convection currents will also cause intermittent rain.

Disaster prevention mechanisms will remain in effect through Thursday in central and southern regions. After a break from the rain on Friday and Saturday, a new weather front is expected to bring more showers at the end of the week.

鋒面裂兩半

今年最強梅雨鋒面鬧"分家"，前天撕裂成東西兩半，先後從台灣北部海面往南移動。其中，西半段依然挾帶豐沛水氣進入台灣，雖然威力減弱，雨勢預報降為大豪雨，但影響時間也拉長到周四。西半部，尤其中南部山區，受鋒面雲系與西南風交互作用，雨勢會更劇烈！

梅雨鋒面挾帶大量水氣，周一台北下了整晚雨，但卻比氣象局預估的時間還晚了半天才發威。原來受到低壓系統拉扯，周日鋒面已經分裂成兩半，強度減弱，而且西半邊移動特別慢。

[[氣象局簡任技正 伍婉華]]
“東邊斷掉、西邊滯留，這常常發生，常會帶來局部性的降雨，有時候還有劇烈的天氣，也因此會造成雨量的預估上，也會出現一些誤差”

雖然不會如之前預估得出現"超大豪雨"，但天氣狀況不穩定，中南部大雨繼續下。

週二累積雨量最高在嘉義149毫米，雲林143毫米，南投也達到136毫米，都達到豪雨等級。

氣象局持續針對西半部與東北部地區發布豪雨特報。

[[氣象局簡任技正 伍婉華]]
“在這後續的雲帶，還是可能影響我們的天氣，另外也會有午後對流作用造成的降雨”

尤其中南部，防災戰線要拉長到周四，禮拜五、六有兩天中場休息，禮拜天又有新一波鋒面報到。