Overview
- Parts of southwestern Oregon are under a freezing fog advisory through noon Friday, with stagnant air under high pressure worsening air quality.
- Alabama saw widespread Thursday morning advisories covering dozens of central and southern counties, generally in effect until 10 a.m.
- Northern Wayne and Susquehanna counties in Pennsylvania faced dense fog with patchy black ice early Thursday, heightening risks on untreated surfaces.
- Earlier this week, dense fog advisories extended across at least 12 states from California to New York, and Gulf Coast meteorologists cautioned that repeat morning fog is likely under similar conditions.
- The National Weather Service urged motorists and boaters to slow down, use low-beam headlights or proper fog signals, and leave extra distance due to sudden drops in visibility.