Hurricane Irene–Olivia was the first actively tracked tropical cyclone to move into the eastern Pacific Ocean from the Atlantic basin. It originated as a tropical depression on September 11, 1971, in the tropical Atlantic. The cyclone tracked nearly due westward at a low latitude, passing through the southern Windward Islands and later over northern South America. In the southwest Caribbean Sea, it intensified to a tropical storm and later a hurricane. Irene made landfall on southeastern Nicaragua on September 19, and maintained its circulation as it crossed the low-lying terrain of the country. Restrengthening after reaching the Pacific, Irene was renamed Hurricane Olivia, which ultimately attained peak winds of 125 mph (201 km/h). Olivia weakened significantly before moving ashore on the Baja California Peninsula on September 30; the next day it dissipated. Category 3 hurricane: peak winds of 125 mph (110 knots), lowest pressure 948 mb. September 11 – October 1, 1971. Landfall: September 19 at 75 mph, 11.4°N 83.9°W. Accumulated cyclone energy: 26.0. Wiki link Track: NOAA National Hurricane Center, HURDAT2 best track EP151971 (public domain).