Why does sun touching the earth form fog? I've seen it happen, but I've
never understood why.
"Robert M. Gary" wrote in message
ups.com...
Live for one winter in Sacramento and you won't ask that question. Near
sunrise most pilot have ATIS continuously tuned monitoring the dew
point second by second. If the spread is right, the moment the first
bit of sun touches the earth the fog forms, sometimes going from CAVU
to 1/2 vis in just minutes.

-Robert