Our fog was insane yesterday! I drive an hour on Hwy 99 on my way to work, yesterday was easily the scariest morning I've driven this month. I kept worrying it was going to be the same this morning, but it decided to rain, yay! The second picture that Lolo posted is what it looked like yesterday morning, except pitch black.

I hate fog. At least it'll burn off in SF, up here it doesn't like to go away.