Hurricane Sergio was a powerful and long-lived tropical cyclone that hit the Baja California Peninsula as a tropical storm and caused flooding throughout southern Texas in early October 2018. Sergio became the eighth Category 4 hurricane in the East Pacific for 2018, breaking the record of seven set in the 2015 season. The twentieth named storm, eleventh hurricane, and ninth major hurricane of the season, Sergio organized into a tropical storm on September 29 and became a hurricane on October 2. It peaked as a Category 4 hurricane on October 4, with reported maximum sustained winds of 140 mph (220 km/h). It maintained peak intensity for 12 hours before weakening. The system then began another period of intensification, achieving a secondary peak with reported winds of 125 mph (205 km/h) on October 6. It made landfall in western Baja California Sur on October 12, caused over US$2 million in damage, and triggered over a thousand school closures. (This article is part of a featured topic: 2018 Pacific hurricane season.)