The National Weather Service in Raleigh issued a dense fog advisory early this morning, warning residents across the central and eastern parts of Central North Carolina of reduced visibility. The NWS advisory, which remains in effect until 9 AM EST, cautions that visibility may fall to a quarter mile or less in dense fog. According to the forecast, patchy fog is expected to lift by 10am, giving way to a partly sunny day, with temperatures rising near 80 degrees. The light and variable wind is anticipated to become southeast 5 to 9 mph in the morning.