According to the National Weather Service in Blacksburg, a swath of dense fog across the foothills of North Carolina into parts of Southside Virginia will continue to persist into late this morning. The fog may reduce visibility down to one quarter of a mile or less at times before slowly lifting around midday. This will affect locations along parts of Interstate 77 and points east through later this morning. Please use caution when traveling and allow plenty of extra time to reach your destination.