The 1975 Pacific hurricane season officially started May 15, 1975, in the eastern Pacific, and June 1, 1975, in the central Pacific, and lasted until November 30, 1975. These dates conventionally delimit the period of each year when most tropical cyclones form in the northeast Pacific Ocean. 17 storms, 9 hurricanes, 4 major hurricanes (Category 3+). Strongest: Denise (140 mph). Accumulated cyclone energy ≈ 113. Wiki link