30,611 lightning strikes in Denmark, northern Germany and western Sweden from midnight until noon today. Yesterday there were 13.814 lightning strikes in the same area. This photo is a view from my bedroom window at half-past one last night. It was an incredible show and I think that there were a lightning every 3 seconds for an hour or so!
(Nikon D700, Nikkor PC-E 24mm 3,5 ED, iso 200, tripod)