A “tsunami roll” cloud phenomenon has appeared over the beaches of Portugal, mesmerizing and shocking beachgoers. This rare ...

Beachgoers in Portugal scrambled for cover over the weekend as the sweltering heat gave birth to a rare “tsunami roll,” or ...

Scientists detected a slow-motion earthquake off Japan, offering rare insight into hidden faults and tsunami risks beneath ...

Roll clouds seen in Portugal following heatwave as temperatures hit over 107 °F with heavy rain, thunderstorms, and hail.