The 1959 Pacific typhoon season featured 24 tropical cyclones, though operationally 59 total areas of investigation were classified by the Joint Typhoon Warning Center (JTWC); three systems were handled by the responsibility of FWB at Pearl Harbor and the USWB at Honolulu. Three systems were questionable due to lack of reconnaissance aircraft use. In total, the season featured 65 tropical cyclones and areas of investigation operationally, including central Pacific Hurricane Patsy, which was operationally believed to have crossed the International Date Line into the western Pacific. The first annual tropical cyclone report for the western North Pacific Ocean was issued by the agency.