While Denmark doesn’t strike many as a place with severe weather events, the nation often ends up caught in between a dramatic battle between hot and cold.

As the summer peaks from June to August, regional volumes of warm air flow north from Central Europe, often fuelled by moisture from the Mediterranean. This warm and wet air collides with cooler and drier air originating from the north (think the North Atlantic Ocean, northern Scandinavia, Russia and Finland) which then triggers long-lasting systems of thunderstorms that can travel for hundreds of kilometres over a day or more.

In the image above, a lightning bolt is seen striking from such a large system approaching from Germany.