I've been using Perfect Lightning 2.0 for my simulated lightning. I have it hooked up to my 1000W amp/sub to flash with the sound of thunder. It was about 30 bucks and I think for the price can't go wrong. A strobe would certainly work too.
Here's a clip of my test with the perfect storm (minus the sound - didnt want to wake the neighbors).
https://www.youtube.com/watch?v=yfSkSosZorc
Here's a clip of my test with the perfect storm (minus the sound - didnt want to wake the neighbors).
https://www.youtube.com/watch?v=yfSkSosZorc