As terrifying as a tsunami; A huge roll cloud covering 150 km on the coast as a heat wave hit, fear and concern

 

Porto: A video of a roll cloud appearing on the coast of Portugal has gone viral on social media, creating concern. According to a report by Euronews, the incident took place when a heat wave hit the country on Monday. Reports also emerged that roll clouds appeared on several beaches on the Portuguese coast. Experts say that roll clouds are a rare weather phenomenon that forms when relatively cold air moves into warm, humid air near the edge of a thunderstorm.

Roll clouds are clouds that move horizontally in a tube shape. Roll clouds resemble giant waves. The video shows a dense cloud rising from the ocean and moving towards the coast. As the clouds approached, strong winds blew. The video was viewed by millions of people. The roll clouds were up to 150 kilometers long. Roll clouds are a relatively rare type of arcus cloud that is low, horizontal, and tube-shaped. The rare phenomenon occurred during a severe heat wave in mainland Portugal, Euronews reported.