Awesome Hoth Explosions

I was puttering around the internets and came across this gigantic "Battle of Hoth" diorama. Pretty neat, but the thing that really caught my eye were the realistic explosions.

Those are awesome! I'd love to be able to create something similar for wargaming barrage markers. Creator "Zipidi Dooda" helpfully uploaded a tutorial for creating them to YouTube:

Spoiler Alert: At the end of the video Zipidi warns against leaving the integral lighting element lit for more than a few minutes lest the entire explosion catch fire. That's a little TOO realistic. Still, I bet a scaled down version using cooler LED lighting effects might work.