Always love lightening. How did you capture this? I notice you had shutter speed at 10 sec, do you just leave it open until the lightening happens and then close it? I'm guessing it's mainly by luck and repitition. 10 sec at time until you get lucky?
That's basically the idea, brute-force method
I take 10 second repeated bursts when I see there is activity in the area, so it helps if it's an active storm. Specifically, I put the camera on a tripod, and on manual focus (after pre-focusing on a distant bulding), set to F8 and 10 second exposure (i.e. camera in manual mode), use continuous shooting mode, and a cable release which I put in the locked position so that it fires repeatedly until I release the lock. My camera doesn't have an intervalometer or else I think you could use that instead of a cable release to force the repeated firing.
As for the 10 seconds at f8 (at ISO200 which is the lowest my camera goes), I've just found that amount of time works well, because it's long enough to capture enough of the lightning burst, but not too long that the city lights burn out the photo. I've tried other exposure combinations but this seems to work the best for me under these conditions and keeps the noise levels down (I don't want to use auto NR because I don't want to miss a lightning burst while the camera is tied up doing the dark-frame subtraction).
Of course using a wide-angle works well because you can get more city/sky and also improve your chances of capturing something, but you can get skewing in the buildings which bugs me a bit.