葡萄牙北部布阿爾庫什海灘（Praia da Claridade）近日出現震撼一幕，遊客們抬頭驚見一道巨型雲牆鋪天蓋地而來，宛如海嘯來襲。
This cloud rolled in like an actual tsunami over Portugal.
— Massimo (@Rainmaker1973) June 30, 2025
It's actually called a roll cloud.pic.twitter.com/0MA27DS4ia
海灘驚現巨型雲牆
這幅驚人景象實為罕見的「捲軸雲」現象，當日雲層延伸超過145公里，從孔迪鎮（Vila do Conde）至菲蓋拉-達福什（Figueira da Foz）都能目睹這自然奇觀。
It was nuts to have experienced this rolling cloud in the north of Portugal. Felt like a tsunami out of a movie! 😂
— Helder (@HelderHP) June 30, 2025
Apparently it was 150km long, stretching from Figueira da Foz all the way up to Vila do Conde, which is close to where I was. pic.twitter.com/BOnr4knsJe
遊客反應兩極
現場拍攝的影片顯示，這道雲牆幾乎遮蔽陽光，伴隨強風呼嘯而過。有遊客興奮表示：「太瘋狂了！就像災難電影場景！」但也有人憂心忡忡，擔心是海嘯前兆。當地媒體報導，當天氣溫高達41.7°C，並伴隨暴雨、雷電及冰雹等極端天氣。
A massive roll cloud, resembling a giant wave, stunned beachgoers in Póvoa do Varzim and Figueira da Foz, Portugal, on June 29. The rare phenomenon brought strong winds and dramatic skies along the coast. #RollCloud #Portugal pic.twitter.com/8cfj5HC4bQ
— GeoTechWar (@geotechwar) June 30, 2025
專家解構「捲軸雲」成因
美國國家氣象局解釋，這種管狀低空雲屬於罕見的弧狀雲，通常與雷雨鋒面有關。當冷空氣推動暖濕氣流快速凝結時，雲層會形成水平滾動的獨特形態。氣象學家科菲迪指出，這類雲層可持續數小時，延伸範圍達數百英里。
管狀低空雲屬於罕見的弧狀雲，通常與雷雨鋒面有關。X圖片
管狀低空雲屬於罕見的弧狀雲，通常與雷雨鋒面有關。X圖片
