The effects of Hurricane Dean in the Greater Antilles were spread over six countries and included 20 deaths. Hurricane Dean formed in the Atlantic Ocean west of Cape Verde on August 14 as part of the 2007 Atlantic hurricane season. The Cape Verde-type hurricane tracked steadily westward into the Caribbean, where it rapidly intensified. Its outer bands swept over the Greater Antilles; the storm surge was felt from the eastern side of Puerto Rico to the western tip of Cuba. It brushed the island of Jamaica as a Category 4 hurricane on the Saffir-Simpson Hurricane Scale before striking Mexico's Yucatán Peninsula at Category 5 strength.