High Quality Content by WIKIPEDIA articles! Hurricane Cleo was the strongest Atlantic hurricane of the 1958 Atlantic hurricane season. It remains one of only three Category 5 hurricanes to avoid land in the historical database–the others were Dog of 1950 and Easy of 1951. The third tropical cyclone, first hurricane, and first major hurricane of the season, Cleo developed from a tropical wave off the coast of Africa. It intensified to a tropical storm 300 miles (480 km) southeast of Praia, Cape Verde. It moved steadily westward, and it intensified to a hurricane on August 12. On August 14, the cyclone turned northward, and its forward motion decelerated. Later, the hurricane strengthened to its peak intensity of 160 mph (260 km/h) on August 15. On August 16, its movement increased, and the cyclone moved around the periphery of an upper-level anticyclone. Its northwest path was halted on August 18, and it turned northeast in response to a shortwave trough. The hurricane transitioned to an extratropical cyclone on August 20, causing no casualties in its path.