We're breaking down every day leading up to and after Harvey's landfall
This is a carousel. Use Next and Previous buttons to navigate 1of38August 17: Experts were keeping their eyes on a few formations in the Atlantic,...
This is a carousel. Use Next and Previous buttons to navigate 1of38August 17: Experts were keeping their eyes on a few formations in the Atlantic, one of which was Potential Tropical Cyclone 9 (PTC9), which was eventually named Tropical Storm Harvey later that night. Show MoreShow Less 2of38August 19: Harvey was downgraded to a Tropical Wave after losing some of its definition and power.HandoutShow MoreShow Less 4of38August 23: Harvey was upgraded to a Tropical Depression after experts were able to find a more defined center.