Hurricane Iselle was a tropical cyclone that made landfall on the island of Hawaii. The tenth named storm, fifth hurricane, and fourth major hurricane of the 2014 hurricane season, Iselle developed from an area of disturbed weather southwest of Mexico on July 31, 2014. Assuming a west-northwest course that it would maintain throughout its existence, generally favorable atmospheric conditions allowed for gradual strengthening, with the cyclone attaining hurricane status a day after formation. Continued strengthening progressed for several days up until August 4, when Iselle reached peak intensity with maximum sustained winds of 140 mph (220 km/h) and a minimum barometric pressure of 947 mbar, making it a Category 4 hurricane. Thereafter, Iselle encountered hostile environmental conditions and quickly weakened before making landfall on the Big Island on August 8 as a moderate tropical storm. Its passage over the island disrupted the cyclone, and Iselle later dissipated on August 9. Category 4 hurricane: peak winds of 140 mph (120 knots), lowest pressure 947 mb. July 30 – August 10, 2014. Landfall: August 8 at 60 mph, 19.2°N 155.4°W. Accumulated cyclone energy: 23.5. Wiki link Track: NOAA National Hurricane Center, HURDAT2 best track EP092014 (public domain).