‘Superfog’ made of fog and marsh fire smoke blamed for traffic pileups, road closures in Louisiana

NEW ORLEANS (AP) — A combination of smoke from marsh fires and dense fog is being blamed for at least two dozen traffic accidents involving multi-vehicle pileups in southeast Louisiana. Sections of Interstates 55 and 10 west of New Orleans have been closed. The 24-mile-long causeway over Lake Pontchartrain was closed for a time. The National Weather Service called the mixture of smoke and fog a “superfog” and said visibility was expected to improve throughout the day as the fog lifted. The Times-Picayune/The New Orleans Advocate reported that several schools in and near New Orleans announced class cancellations or delayed openings due to the smoke and fog.