Portugal experienced a heatwave with temperatures soaring to 42C, leading to the appearance of a rare roll cloud at a beach. Beachgoers witnessed this impressive weather event on June 29, as the dense, tsunami-like cloud emerged from the ocean and swept toward the shore. Climate expert Mario Marques noted that while such roll clouds are uncommon in Portugal, they do occur, albeit more frequently in regions like Australia where specific air mass interactions are more prevalent.
A rare roll cloud phenomenon appeared at a beach in Portugal during a heatwave reaching 42C, surprising beachgoers with its tsunami-like appearance.
This phenomenon occurs when hot and cold air masses collide, creating a thick curved cloud that quickly moves ashore from the ocean.
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