Overview

• The National Weather Service issued a dense fog advisory at 3:16 a.m. EDT for Berrien County lasting until 7:30 a.m. and another at 4:09 a.m. for Southern Erie and Crawford counties until 9 a.m.
• Radiational cooling under clear skies dropped temperatures into the upper 50s and lower 60s, leading to patchy fog formation across parts of Michigan and Pennsylvania.
• Drivers may face sudden shifts in visibility to a quarter mile or less over short distances, raising the risk of collisions during the early commute.
• Motorists are urged to slow down, use low-beam headlights, increase following distance and, if visibility nears zero, pull off the road with hazard lights on.
• Local news outlets are relaying these advisories through Advance Local Weather Alerts, an automated United Robots service that compiles official NWS reports.