Typhoon Opal (1964)
Typhoon Opal, known in the Philippines as Super Typhoon Naning, was an intense Category 5-equivalent typhoon in the extremely active 1964 Pacific typhoon season. Opal also had the largest wind circulation of any typhoon in 1964, with a total span of 2,100 km (1,300 mi).Data from the Joint Typhoon Warning Center (JTWC) indicated that Opal's winds were the highest of any typhoon in 1964.