Hurricane Otto produced days of torrential rain over much of the northeastern Caribbean in October 2010. Otto originated as a subtropical cyclone lingering north of Puerto Rico on October 6, and transitioned into a tropical storm the next day, the fifteenth of the 2010 hurricane season. Accelerating toward the northeast, Otto strengthened into a Category 1 hurricane on the Saffir–Simpson scale on October 8, attaining peak winds of 85 mph (140 km/h). The storm began weakening due to incompatible surroundings and became extratropical west of the Azores on October 10. Otto was the first Atlantic tropical cyclone to transition from a subtropical storm since Tropical Storm Laura in 2008. Category 1 hurricane: peak winds of 85 mph (75 knots), lowest pressure 976 mb. October 6 – October 17, 2010. Accumulated cyclone energy: 4.4. Wiki link Track: NOAA National Hurricane Center, HURDAT2 best track AL172010 (public domain).