...Areas of dense fog developing...
Widespread fog has begun to form over north central North Carolina... including in the Triangle region north to the Virginia border. Some of this fog has become dense... dropping visibilities to a half mile or less. This fog is expected to persist through the morning rush hour... causing travel problems late tonight through daybreak.
Be on the lookout for sudden changes in visibilities overnight and into the morning. Visibilities can drop quickly in short distances. In addition... visibilities may become severely restricted near rivers... lakes... and other low-lying areas. Be especially cautious in and near school zones and bus stops. Watch for flashing yellow or red signals on school buses... and be on the lookout for school children.