What is 'radiation fog' affecting the Southeast?

Radiation fog is a type of dense fog that forms when the ground cools rapidly overnight under clear skies, causing moisture in the humid air to condense near the surface.

What areas are under the dense fog advisory?

The National Weather Service has issued advisories for 78 counties across Georgia, South Carolina, and parts of the Florida Panhandle.

Can this fog cause health problems in places like Georgia?

While not radioactive, dense fog can trap local pollutants, potentially exacerbating respiratory issues for residents in affected areas, with some reporting unusual smells.

Home / Weather / Dangerous Fog Blankets South; Millions Affected

Dangerous Fog Blankets South; Millions Affected

9 Jan

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Summary

Dense fog advisory impacts 78 counties across Georgia, South Carolina, and Florida.
Drivers face visibility less than a quarter-mile, prompting safety warnings.
Fog can trap pollutants, potentially worsening air quality and respiratory issues.

Dangerous Fog Blankets South; Millions Affected

A significant "radiation fog" has enveloped the Southeastern United States, leading to hazardous travel conditions for approximately five million individuals. The National Weather Service issued a dense fog advisory on Friday morning, covering 78 counties across Georgia, South Carolina, and Florida. Visibility has been drastically reduced to less than a quarter-mile in many areas, prompting urgent warnings for drivers to exercise extreme caution.

While this type of fog is a natural weather phenomenon and not related to nuclear radiation, it poses indirect health concerns. Officials have previously highlighted that dense, low-level fog can trap airborne pollutants, such as car exhaust and factory emissions, close to the ground. This can lead to degraded air quality, particularly in urban centers, and may worsen respiratory conditions like asthma for those exposed.