Tropical Depression Five was an Atlantic tropical cyclone that lasted for 12 hours, although its remnants persisted for almost another week. Its precursor was from a non-tropical trough east of Florida, and on August 10 it developed in the southeastern Gulf of Mexico. It was the fifth depression of the 2010 Atlantic hurricane season. The system was declassified as a tropical cyclone the following day, a remnant circulation later moved over Louisiana and Mississippi, producing heavy rainfall and causing flooding. Along the Florida coast, the system produced heavy waves that contributed to two deaths. Moving inland, the remnants of the depression reached central Alabama before turning southward. The system nearly redeveloped into a tropical cyclone on August 16 after it again reached the Gulf of Mexico, but it became disorganized and turned northward into Mississippi. The depression twice caused BP to delay work in building a relief well to combat the Deepwater Horizon oil spill. Meteorological history The origins of the depression were from a dissipating cold front that extended from the northeast Gulf of Mexico across Florida on August 7, connected to a weak non-tropical low-pressure area located several hundred miles east-southeast of Jacksonville, Florida. The system had disorganized convection– thunderstorms– and moved generally southwestward after drifting against the Gulf Stream. Conditions were initially unfavorable for development, due to strong upper-level wind shear and land interaction. By late August 9, the low reached the southeastern Gulf of Mexico, and the National Hurricane Center (NHC) noted a medium chance for tropical or subtropical development, due to an anticipated decrease in wind shear. The convection gradually increased and became better organized, and a hurricane hunters flight late on August 10 confirmed the development of Tropical Depression Five about west of Fort Myers, Florida. Upon being classified as a tropical cyclone, the tropical depression had a broad circulation and organized deep convection. It was located over very warm water temperatures, although the upper-level environment was not conducive for significant intensification. Easterly wind shear was forecast, but the NHC anticipated the depression strengthening to before making landfall in Louisiana. Under the influence of a mid-level ridge to its north, the depression was forecast to track generally northwestward. Early on August 11, the convection diminished significantly due to the entrainment of dry air and vertical wind shear from a nearby upper-level low. The circulation became difficult to locate; however, conditions favored the redevelopment of