The Opana Radar site is situated on a knoll overlooking the Pacific Ocean, located 532 feet above sea level. It is the highest point in the Opana ahupuaa and provides an unobstructed view out to sea. Today a modern telecommunications station operated by the Navy occupies the top of the Opana Hill. The area is fenced and a roadway leads up from Kamehameha Highway to the site. This site is where radar was utilized for the first time in a combat situation. At this location on December 7, 1941, the Japanese squadron of airplanes was detected on radar prior to their attack upon Pearl Harbor.
This list of Hawaii’s historic properties is provided as a public service by Historic Hawaii Foundation. It is not the official list of properties designated on the Hawaii State Register of Historic Places. For official designations and determinations of eligibility, contact the State Historic Preservation Division of the Department of Land and Natural Resources of the State of Hawaii at 808-692-8015.