The National Weather Service in New Orleans issued a dense fog advisory for southeast Louisiana and southern Mississippi Wednesday morning.
It expired at 9 a.m.
Forecasters said drivers could expect visibility to be less than a quarter-mile at times in certain areas.
Drivers were advised to use their low-beam headlights and leave plenty of distance ahead.
The Louisiana parishes included in the advisory were:
East Baton Rouge
St. John the Baptist
West Baton Rouge
The Mississippi counties in the advisory zone were:
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