Dense fog, dropping visibility in some areas to less than a quarter mile, enveloped most of Tampa Bay Thursday morning.
The National Weather Service issued a dense fog advisory until 11 a.m. and advised drivers to slow down and keep a safe distance between cars.
"Visibility has been dropping down to a half mile to even less than a quarter mile in many areas this morning," said Bay News 9 meteorologist Juli Marquez.
Pinellas, Hillsborough, and Pasco counties were the areas most affected by the fog, Marquez said, with some areas seeing .20 miles of visibility.
Areas of Hernando also reported fog, but the visibility in some areas there is about two miles.
The Florida Highway Patrol issued several weather warnings early Thursday, including on the Sunshine Skyway Bridge and parts of Interstate 75. At the Howard Frankland bridge, visibility was less than one eighth of a mile, troopers said.
The fog was expected to recede by late morning, Marquez said.
A cold front was forecast to move into the region starting Thursday morning, bringing with it a 40 percent chance of scattered showers and cooler temperatures.
Temperatures on Thursday will be in the low to mid 70s. In Hernando, conditions were expected to remain in the 60s throughout the day.
On Friday morning, temperatures may dip even lower into the 50s, with temperatures in the 60s by the afternoon.