It causes some vertical motion which stirs the air a little,
casing the fog to form.



"Steve Foley" wrote in message
news:EkoNf.1255$v34.1168@trndny02...
| 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
|
|
|