Hurricane Boris was the second of three storms to impact the Pacific coast of Mexico in June and July 1996. The fourth tropical cyclone and second hurricane of the 1996 Pacific hurricane season, Boris formed out of a tropical wave roughly 250 mi (400 km) south of the Gulf of Tehuantepec on June 27. The storm gradually intensified, becoming a tropical storm the following day and then hurricane on June 29. As the storm neared landfall, an eye developed and Boris reached its peak intensity with winds of 90 mph (150 km/h). Shortly after, the hurricane made landfall along the south coast of Mexico, between Lazaro Cardenas and Acapulco, at this intensity. Boris quickly weakened following its landfall, becoming a tropical depression roughly 18 hours later. The remnants of the system persisted unt