... Dense fog advisory in effect until 4 am CDT Saturday...
The National Weather Service in Des Moines has issued a dense fog
advisory... which is in effect until 4 am CDT Saturday.
* Visibility... dense fog is expected to produce widespread low
visibilities of a quarter mile or less in the advisory area.
Some improvement is expected gradually overnight as a weak
boundary bring drier air into much of central Iowa. In the
meantime... expected very low visibilities in the advisory area.
* Impacts... travel will be greatly impacted by the reduced
visibility and fog over portions of the area. Allow extra travel
time to reach your destination safely.
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.