Mayfield, Max. Hurricane Opal(PDF) (Preliminary Report). Miami, Florida: National Hurricane Center. Archived from the original on May 3, 2015. Retrieved April 20, 2015.
Maher, Brian; Beven, Jack (August 10, 1997). "World-wide Tropical Cyclone Names". Miami, Florida: National Hurricane Center. Archived from the original on December 10, 1997. Retrieved April 9, 2024.
National Hurricane Operations Plan(PDF) (Report). Washington, D.C.: NOAA Office of the Federal Coordinator for Meteorological Services and Supporting Research. May 2001. p. 3-7. Retrieved April 9, 2024.
Mayfield, Max. Hurricane Opal(PDF) (Preliminary Report). Miami, Florida: National Hurricane Center. Archived from the original on May 3, 2015. Retrieved April 20, 2015.
Maher, Brian; Beven, Jack (August 10, 1997). "World-wide Tropical Cyclone Names". Miami, Florida: National Hurricane Center. Archived from the original on December 10, 1997. Retrieved April 9, 2024.