I went up to Berkeley yesterday to watch the fireworks out on the Marina with Mom. The fog was so thick that it made for a very unusual display. Some of the fireworks went off deep enough in the fog that we couldn't see any of the actual flares, but the entire fog bank would just light up green or red or blue. And sometimes, a cloud of smoke from a previous firework would be in front of it, and get backlit, making it look like a photo negative of a regular explosion. The ones that were going off closer to us looked pretty normal, though with a bit of an extra glow from the fog, so all in all it was a very entertaining show.