Growing up in the Sacramento Valley I had plenty of opportunity to experience  fog so thick you couldn’t see the house across the street.  In the Napa Valley, we only experience ribbons of  fog that lace a vineyard together or tuck into a hillside.  I captured the picture above on my way to work this week.  It struck me how quickly the fog formed and meandered amongst the vines and trees.  Unlike the tule fog that sticks low to the ground and makes it …