Tomorrowland, in the Belgium town of Boom, is considered the world’s largest electronic dance music festival. The stage was “severely damaged” by the fire, organizers said.

The eruption on the Reykjanes Peninsula prompted evacuations including in the town of Grindavik and the Blue Lagoon. No damage or casualties have been reported.

The dark, tsunami-like cloud formation billowed across parts of Portugal’s northern and central coasts, as the country set a heat record.