Lane County Lowlands Brace for Freezing Fog, Visibility Drops to 1/4 Mile

The National Weather Service has issued a freezing fog advisory for the Lane County Lowlands, effective until noon on Wednesday. This advisory warns of visibility dropping to a quarter mile or less due to freezing fog. Residents are cautioned that deteriorating air quality could affect those with respiratory conditions. Low visibility can also create hazardous driving conditions.

Impact of Freezing Fog Advisory

The freezing fog advisory means that fog is forming as surface temperatures approach or drop below freezing. The tiny liquid droplets in the fog can freeze upon contact with surfaces, posing potential dangers for motorists and other travelers.

Health Precautions

• State air quality agencies advise limiting outdoor burning.
• Residents should check local burn restrictions.
• Those with respiratory issues must follow medical guidance during high pollution levels.

Understanding Freezing Fog

Freezing fog forms similarly to regular fog but occurs under colder conditions. It begins with clear skies and ground cooling, leading to the condensation of water vapor into tiny droplets. When temperatures are below freezing, these droplets remain in liquid form, known as supercooling.

Risks of Freezing Fog

When supercooled droplets contact surfaces, they can crystallize, creating rime ice on various objects, including roads and vehicles. This transformation can increase risks for drivers, aircraft, and other forms of transportation, as visibility can drop significantly.

Black Ice Hazard

Black ice, or clear ice, is a nearly invisible glaze that forms on roadways, often as a result of freezing fog. Its transparency makes it particularly dangerous, as drivers may not detect it until it’s too late.

Road Safety Tips During Freezing Fog

• Exercise caution and avoid travel if possible.
• Drive slowly and watch for black ice.
• Use low-beam headlights for better visibility.
• Maintain a safe distance from other vehicles.
• Follow lane markings to stay on course.

Air Travel Considerations

For air travel, a thin layer of ice can pose serious risks. Ensure aircraft are adequately treated for ice removal or equipped with de-icing systems.

By staying informed and cautious, residents can navigate the challenges presented by freezing fog and its associated dangers. Always prioritize safety in these complex meteorological conditions.