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Northeasterlies bring lower temps and air pollution

Northeasterlies bring lower temps and air pollution

2023-11-24

Brace yourselves, Northern Taiwan. A chilly weekend is in store as northeasterly winds pick up strength. In Miaoli County, temperatures dropped to a bracing 12.8 degrees Friday morning. This cold wave is coupled with strong winds, and it’s set to last until Sunday. Pollution from China will also be with us this weekend, as the northeasterlies sweep in air from across the strait.

The northeasterly winds are picking up strength, bringing down temps in Northern Taiwan. The lowest temperature in the country was recorded Friday morning in Miaoli, at just 12.8 degrees. Warm coats and scarves were the order of the day.

Brace for brief downpours in windward parts of Greater Taipei, Yilan, Hualien and Taoyuan’s mountains. On Friday, heavy winds destroyed hairdos and threatened to turn umbrellas inside out. The Central Weather Administration issued a strong wind advisory for the area from Taoyuan’s coast to Yunlin, and for the Hengchun Peninsula, which could see gusts could of up to 102 kilometers per hour. The northeasterly winds are carrying pollution from China. In Northern Taiwan and the outlying islands, the air quality alert flashed red for “hazardous.” Central Taiwan, Yunlin, Chiayi, Tainan, Kaohsiung, and Pingtung saw an orange alert, meaning that the air was unhealthy for sensitive groups.

Hsu Chung-yi
CWA forecaster
The cloud colors in areas affected by the northeasterly winds are clearly different from the cloud colors to the south and to the north. They are less opaque, which indicates air pollutants. As the northeasterly winds pick up strength, pollution is being blown into Taiwan. Today, it’s mostly affecting the western half of the island.

This wave of northeasterlies will bring wet weather mainly to windward areas. By Sunday, the rains will taper off and temperatures will briefly rise. On Monday, the northeasterly winds will return, bringing in cold and dry weather. The impact will be more intense than the current wave, with lows expected to reach 14 or 15 degrees islandwide. Radiative cooling could make certain areas even colder in the early mornings.

Hsu Chung-yi
CWA forecaster
Starting Monday evening, we’ll see the next wave of northeasterly winds pick up strength. They’ll have an impact over a longer period of time, all the way until Thursday or Friday. That means there will be big day-night temperature swings all over Taiwan, and we may see radiative cooling in the early hours of the morning. Over in central and southern Taiwan, the change won’t be as significant, although we will see bigger day-night temperature swings. Mornings and nights will be cool, and temperatures will climb back up during the day.

Cold weather is expected from next Monday to Saturday. So if you’re heading outdoors, be sure to dress accordingly.

For more Taiwan news, tune in:
Sun to Fri at 9:30 pm on Channel 152
Tue to Sat at 1 am on Channel 53

東北季風增強北部降溫 冷空氣影響到週日短暫回溫

2023-11-24

受到東北季風增強影響,北台灣氣溫直直落,清晨最低在苗栗只有12.8度,這波冷空氣將影響到週日,才會短暫回暖,不過,這波東北季風也讓氣象署罕見發出強風特報,加上夾帶境外污染物南下,環境部也特別提醒,中國霾害這幾天將會影響台灣。

受東北季風增強影響,北台灣氣溫下滑,週五一早最低溫出現在苗栗,只有12.8度,外出民眾紛紛把厚重衣物及圍巾穿戴上身。

迎風面的大台北、宜花及桃園山區,要留意有局部短暫雨,就連風也很強,不只民眾手上的雨傘差點開花,頭髮也四處飛舞,氣象署針對桃園到雲林及恆春半島發布強風特報,有9-10級強陣風出現的機會,而強勁的東北風,更挾帶中國上海的境外污染物南下,導致竹苗以北及離島的空氣品質都達到紅色警示,中部、雲嘉南及高屏也來到橘色提醒等級。

[[氣象署預報員 徐仲毅]]
“東北季風增強的區域,雲的顏色很明顯跟南邊,還有北邊是不太一樣,這個地方的顏色其實是比較淡的,表示有些境外污染物,是隨著東北季風增強,移進到台灣附近,今天的話會比較偏向在整個西半部地區”

這波東北季風,水氣主要集中在迎風面,到週日後就會減弱,各地氣溫將短暫回升,但週一又有新一波東北季風報到,雖然屬於乾冷性質,但強度比前一波稍微增強,氣溫將直直落,各地低溫都將下探14-15度,清晨受輻射冷卻影響,局部地區還有可能更冷。

[[氣象署預報員 徐仲毅]]
“禮拜一的晚上之後,可以看到下一波東北季風開始增強,影響時間也會比較長,一直到禮拜四甚至禮拜五之後,對北台灣來說日夜溫差會加大,清晨可能還有些輻射冷卻效應影響。對中南部地區來講的話,其實變化不大,整齊來說都是一個日夜溫差比較大,早晚涼白天氣溫會回升”

下週一到週六,冷空氣一波接一波報到,提醒民眾務必留意天氣變化,適時添加衣物。

更多新聞內容,請鎖定:
民視台灣台(152頻道)週日至週五晚上9:30
民視新聞台(53頻道)週二至週六凌晨1:00


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