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Sudden dust devil sweeps over flooding disaster site in Guangfu

Sudden dust devil sweeps over flooding disaster site in Guangfu

2025-10-14

As if Guangfu hadn’t had enough with last month’s floods, on Monday afternoon, the town was swept by a twister. A strong gust of wind suddenly blew up a dust devil in the square outside a local temple. It lifted up sand, gravel, and debris and flung it all over the place. Why did it appear? Let’s hear from an expert.

Chen Shih-lan
Former CWA head
This phenomenon is mainly caused by hot air. The weather must have been very good that day, so when the air warmed up in the afternoon, the dry environment caused by the dry mud and sand must have further strengthened the vertical convection. As it strengthens, it begins to spin, causing this phenomenon.

The weather expert says the phenomenon was not a full-blown tornado, but a dust devil. Tornados can be several kilometers tall, whereas dust devils don’t usually go past 10m in height. He says the hot air and dry conditions led to strong vertical convection, resulting in a spectacular but mostly harmless twister.

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#dustdevil #twister #whirlwind #weather #guangfu #wow #spectacular #nature

光復災區驚現"塵捲風" 捲大量砂石.垃圾 民眾嚇壞

2025-10-14

花蓮光復鄉,目前正在進行災害復原工作,沒想到週一下午大約兩點時,保安宮前廣場,突然出現一陣風,把砂石及雜物都捲起。

[[前氣象主任 陳世嵐]]
“主要它是因為空氣加熱,我想那一天天氣非常好,午後嘛,加熱,然後現在可能在災區裡面很多灰塵、沙塵、泥流,造成乾燥,加熱以後他的垂直對流就會非常旺盛,垂直對流旺盛的時候,基本上他就會產生這個現象,就會旋轉。”

前氣象站主任解釋,其實這個並不是龍捲風,而是塵捲風,兩者的差異在於大小,龍捲風可能到幾公里,但塵捲風最多就十來公尺。至於形成原因,專家說,主因是空氣加熱,導致垂直對流旺盛,搭配上災區現在很多沙塵、灰塵等物,造成旋轉,才會產生塵捲風。

更多新聞內容,請鎖定:
民視台灣台(152頻道)週一至週五晚上9:30
民視新聞台(53頻道)週二至週六凌晨1:00

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