Sky color is real? Looks good.
To shoot 30 sec was on purpose? How did you know that the duration of the phaenomenon would last so?
I suppose he shot 30 sec hoping for the best. At least, is how I (try to) shoot lightning... the maximum time without having to wait for the dark frame calculation, shot back to back, hope that one strike happens during you exposure. No?
Fab, good timing, 30 secs!
It's a winner!