...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING...

The National Weather Service in Des Moines has issued a Dense Fog
Advisory, which is in effect until 9 AM CDT this morning.

* VISIBILITY...Below a quarter mile at times, to near zero in some
  areas.

* IMPACTS...Driving will require caution in and around areas of
  denser fog. Visibility will drop rapidly when entering these
  areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Dense Fog Advisory means visibilities will frequently be
reduced to less than one quarter mile. If driving, slow down, use
your headlights, and leave plenty of distance ahead of you.