The Brilliant White Light

I was looking across a city, staring at the broad expanse of the horizon. The sky was dark, and I could see lights scattered everywhere. I was focusing on a place where everything seemed to converge, and suddenly I saw a brilliant white light form and expand across the horizon like a nuclear explosion. The light was pure white, not yellow like the sun or like blue electricity, but pure white. I returned to my house to find my family, knowing the light would quickly spread throughout the region.