Authorities in Scotland canceled trains, closed parks and warned people to tie down backyard trampolines as an unusually strong summer storm toppled trees, felled power lines and disrupted travel across northern Britain.

Tens of thousands of households have been left without electricity this week after Storm Floris wreaked havoc on power lines. Engineers worked to restore power to around 22,000 properties in the north and north-east of Scotland on Tuesday morning afte r Storm Floris hit the country with high winds.

The storm hit at the busiest time of year for tourism with hundreds of thousands of people flocking to Edinburgh’s annual arts festival.