It isn’t officially winter yet but we have been experiencing winter weather. For Hanford that means the Tule fog rolls in and frost covers the ground. I haven’t been up early enough to take any frost pictures. It pretty much has melted off by the time I’m out the door in the mornings. But there have been a couple of days when the fog comes in early and doesn’t burn off. Visiblity can be a hundred yards or less at times. King County seems to experience a thicker and longer lasting fog. Sentinel reporter Mike Eiman wrote a pretty good story on why this happens.