Special Weather Statement issued September 12 at 2:45AM EDT by NWS

…Locally dense fog… Locally dense fog with visibilities less than a half of a mile has developed across portions of east central New York and western New England mainly in river valleys and near bodies of water. Motorists are urged to be prepared for rapid changes in visibilities and to give themselves some extra time to reach their destination.

Source: National Weather Service Alerts for Vermont