There is a suspicious heavy grey fog now cover Chicago through raliegh and covering the north east. It's a heavy damp dense fog making visibility difficult. Expected flight delays .. Is it due to the unseasonable temps (30+degrees above average ... Look at Dallas it's never been that hot there this time of year ) or the derailment of a cargo train hauling extremely toxic material that happened to spill tons of hazardous toxic material into a stream that feeds the Delaware ( the Delaware river runs right down through where the fog is heading southbound and air currents could have sent it west and south...
Take a look ...