bright outdoors

I walked outside today, after being indoors packing for quite a while, and was struck at the brightness of the outside.  It was so bright, actually, that I didn't initially have a word to describe it. 

It was the brightness that happens at the end of a film, after a nuclear blast, when they open the door of the fallout shelter, and by God, it is a New Day, the first day of a newer, brighter, atomic future.

But that didn't do it justice.  It was the brightness that color Oz was to sepia Dorothy.