SANTA ANA (CBSLA.com) — John Wayne Airport is set to become the first airport in Southern California to re-number its runways in response to Earth’s changing magnetic field.
Orange County Register reporter Mary-Ann Milbourn told KNX 1070’s Chris Sedens and Diane Thompson workers at John Wayne will re-number the airport’s two runways and update about two dozen directional signs to adjust for a periodic shift in magnetic north, the point at the top of the Earth that determines compass headings.READ MORE: Woman Arrested At O.C. Hotel On Suspicion Of Arson
“It moves around, and right now, it’s moving about 40 miles a year towards Russia,” Milbourn said. “As it moves, if you have a stationary object like a runway that hasn’t been changed, eventually it’s headings will not line up with the magnetic north.”