nine hurricanes, and four major hurricanes. At the time, this season's total of twelve named tropical cyclones was exactly average, although at the time the climatology in this basin was weak because satellite coverage was spotty before 1966. This season, all advisories and tropical cyclone data were released and collected by two agencies, the Eastern Pacific Hurricane Center in Redwood City, California, and the Central Pacific Hurricane Center in Honolulu, Hawaii, both of which were coextensive with the National Weather Service Forecast Offices in their respective cities. The EPHC covered the area between the coast of North America and 140°W, and the CPHC the remainder of the area. Systems Hurricane Ava A tropical depression formed on June 2. It steadily strengthened and headed in a generally westerly direction. It moved slowly and became Hurricane Ava on June 4. Two days later, it became a major hurricane and it sped up. On June 7, it became a Category 5 hurricane. It then started weakening and slowed down until it dissipated on June 12. No deaths or damages were attributed to Hurricane Ava. Ava's minimum central pressure was 915 millibars, and its maximum sustained winds reached . This made Ava the most intense recorded east Pacific hurricane at the time. Ava reached Category 5 intensity on June 7, the earliest date in an east Pacific season that a hurricane has done so. It was also the second known Category 5 storm in the east Pacific; (behind Patsy in 1959). Ava is the strongest June storm, the fifth most intense east Pacific hurricane, and was the only June Category 5 on record until 2010. Ava was also flown into by hurricane hunter aircraft in what was the first penetration of a Pacific hurricane by NOAA aircraft. During these flights, radars and other devices were tested, and wind speed, pressure, and wave heights were measured. This is the reason why Hurricane Ava's pressure is measured instead of estimated. Ava was also photographed from Skylab because it was visible during one of the missions. At that time, it was coincidentally on the surface of the Earth directly underneath the space station. All in all, these made Hurricane Ava one of the best-observed Pacific hurricanes at the time. Tropical Storm Bernice A nearly stationary disturbance in the Intertropical Convergence Zone spent three days organizing and finally developed into a tropical depression on June 22. The cyclone