what a capture! sure its a little OoF and I figure you knew about the horizon before entering. But a very cool lightning shot, and it is exposed very well with few missing highlights. I like it.
For me, I wonder how this would look if you rotated the horizon line just a bit counter-clockwise so it was horizontal and not tilting? Good lighting capture.
The timing of the shot is obviously great... I do wish it could have been in sharper focus, though. A pass of a sharpening filter may have been enough to give it some more zip that way. And I probably would have tried to level out the horizon a bit.
I always love night shots and the sky on this one is a very nice colour! Love the way the lightening seems to be hitting the two centre buildings. Its just a touch crooked and a little soft but over all a very pleasant shot. Good luck with it By the way I reconize that city!