Opana Radar Site

Opana Radar Site
LocationKawela Bay, Hawaii
Coordinates21°41′8″N 158°0′36″W / 21.68556°N 158.01000°W / 21.68556; -158.01000
Arealess than one acre
Built1941
NRHP reference No.91001379
Significant dates
Added to NRHPSeptember 19, 1991
Designated NHLApril 19, 1984

The Opana Radar Site is a National Historic Landmark and IEEE Milestone that commemorates the first operational use of radar by the United States in wartime, during the attack on Pearl Harbor. It is located off the Kamehameha Highway just inland from the north shore of Oahu, Hawaii, south of Kawela Bay. It is not open to the public.