Joe wrote:

Here is a good example of the type of fog you see on Mark Twains favorite
river:

http://away.com/gifs/states/mn/fall_missriver.jpg

Anyone know what type of fog this is? And how it is formed?

It looks like a blanket of fog in chilly air over warm water, I forget the
official name for it. And if it is in St Paul Minn, it's well above Mark
Twain country IIRC.



Would you be scared to navigate in this fog?

If it was on a river with current, yes.

Fresh Breezes- Doug King