GPS interference has been reported near Jeddah Port, Saudi Arabia, in the vicinity of position 21-29N, 039-09E on October 15^th and 18^th, 2018. These incidents have not been confirmed. This interference is resulting in either inaccurate positions or no position. Exercise caution when transiting this area. Further updates will be provided when available. This alert will automatically expire on October 29, 2018. See U.S. Maritime Advisory 2018-007 and https://go.usa.gov/xPQpe for additional GPS info, including how to report GPS problems or anomalies.