Drone footage released on Wednesday, September 18, shows extensive flooding on two highways in coastal North Carolina following historic rainfall earlier this week.The North Carolina Department of Transportation, which released the footage, said the footage shows flooding on two highways in Brunswick County. Transportation officials cautioned against driving across flooded and damaged roads on Wednesday, and asked residents to be patient.Up to 20 inches of rainfall was reported in Brunswick and southern New Hanover counties, weather officials said on Tuesday. Credit: NCDOT via Storyful