Hurricane Rita
Hurricane Rita is the most intense tropical cyclone on record in the Gulf of Mexico, now tied with Hurricane Milton of 2024, as well as being one of the most intense Atlantic hurricanes on record overall. Part of the record-breaking 2005 Atlantic hurricane season, which included three of the ten most intense Atlantic hurricanes in terms of barometric pressure ever recorded, Rita was the seventeenth named storm, tenth hurricane, fifth major hurricane, and third Category 5 hurricane of the 2005 season. It was also the earliest-forming 17th named storm in the Atlantic until Tropical Storm Rene in 2020. Rita formed near The Bahamas from a tropical wave on September 18, 2005, that originally developed off the coast of West Africa. It moved westward, and after passing through the Florida Straits, Rita entered an environment of abnormally warm waters. Moving west-northwest, it rapidly intensified to reach peak winds of 180 mph, achieving Category 5 status on September 21. However, it weakened to a Category 3 hurricane before making landfall in Johnson's Bayou, Louisiana, between Sabine Pass, Texas and Holly Beach, Louisiana, with winds of 115 mph. Rapidly weakening over land, Rita degenerated into a large low-pressure area over the lower Mississippi Valley by September 26.
In Louisiana, Rita's storm surge inundated low-lying communities along the entire coast, worsening effects caused by Hurricane Katrina less than a month prior, such as topping the hurriedly-repaired Katrina-damaged levees at New Orleans. Parishes in Southwest Louisiana and counties in Southeast Texas where Rita made landfall suffered from severe to catastrophic flooding and wind damage. According to an October 25, 2005, Disaster Center report, 4,526 single-family dwellings were destroyed in Orange and Jefferson counties located in Southeast Texas. Major damage was sustained by 14,256 additional single-family dwellings, and another 26,211 single-family dwellings received minor damage. Mobile homes and apartments also sustained significant damage or total destruction. In all, nine Texas counties and five Louisiana Parishes were declared disaster areas after the storm. Electric service was disrupted in some areas of both Texas and Louisiana for several weeks. Texas reported the most deaths from the hurricane, where 113 deaths were reported, 107 of which were associated with the evacuation of the Houston metropolitan area.
Moderate to severe damage was reported across the lower Mississippi Valley. Rainfall from the storm and its associated remnants extended from Louisiana to Michigan. Rainfall peaked at in Central Louisiana. Several tornadoes were also associated with the hurricane and its subsequent remnants. Throughout the path of Rita, damage totaled about $18.5 billion. As many as 120 deaths in four U.S. states were directly related to the hurricane.
Meteorological history
On September 7, 2005, a tropical wave emerged off the west coast of Africa and moved westward into the Atlantic Ocean. Failing to produce organized, deep atmospheric convection, the disturbance was not monitored by the National Hurricane Center for tropical cyclogenesis. Convection associated with the system increased briefly late on September 13 before dissipating shortly thereafter. At roughly the same time, a remnant surface trough had developed from a dissipating stationary front and began to drift westward north of the Lesser Antilles. Meanwhile, the tropical wave slowly became better organized and was first noted in the NHC's Tropical Weather Outlooks on September 15 while northeast of Puerto Rico. The wave merged with the surface trough two days later, triggering an increase in convective activity and organization. A subsequent decrease in wind shear enabled additional organization, and at 00:00 UTC on September 18, the NHC estimated that the storm system had organized enough to be classified as a tropical depression, the eighteenth disturbance during the hurricane season to do so. At the time, the disturbance, classified as Tropical Depression Eighteen, was roughly east of Grand Turk Island in the Turks and Caicos and had developed banding features.In generally favorable conditions for tropical development, the depression quickly organized and attained tropical storm strength at 18:00 UTC that day based on data from reconnaissance flights, nearby ships, and weather buoys. As a result, the tropical storm was named Rita. However, an increase in moderate southerly vertical wind shear as the result of a nearby upper-level low subdued continued intensification and displaced convective activity to the north of Rita's center of circulation. Once the upper-level low weakened, Rita's center of circulation reformed to the north, compensating for the disorganization that resulted from the wind shear. Consequently, the tropical storm resumed its previous strengthening trend as it was steered westward across The Bahamas along the south periphery of a ridge. Upon entering the Straits of Florida on September 20, Rita strengthened into a Category 1 hurricane by 12:00 UTC, while maintaining a minimum barometric pressure of 985 mbar. Six hours later, Rita intensified further into Category 2 before subsequently passing approximately south of Key West, Florida. Aided by favorable outflow and anomalously warm sea surface temperatures , the trend of rapid deepening continued, and Rita reached Category 3 status upon entering the Gulf of Mexico by 06:00 UTC on September 21, making it a major hurricane.
Once in the Gulf of Mexico, Rita passed over the extremely warm Loop Current during the midday hours of September 21, enabling continued strengthening. As a result, the hurricane's wind field significantly expanded and the storm's barometric pressure quickly fell. By 18:00 UTC that day, Rita attained Category 5 hurricane intensity, the highest category on the Saffir–Simpson hurricane wind scale. Rita's intensification phase was accompanied by an unprecedentedly abundant outbreak of lightning within the storm's eyewall. Favorable conditions allowed for additional strengthening, and at 0300 UTC on September 22, Rita reached its peak intensity with maximum sustained winds of 180 mph and a minimum barometric pressure of 895 mbar, making it the strongest tropical cyclone ever recorded in the Gulf of Mexico and up until that point the third strongest hurricane in Atlantic history. At the time, it was located 310 mi south of the Mississippi River Delta.
Rita maintained Category 5 hurricane intensity for 18 hours before an eyewall replacement cycle took place, weakening the hurricane to Category 4 intensity by 18:00 UTC on September 22. As a result of the cycle, a new, larger eyewall consolidated, resulting in Rita's wind field expanding. At the same time, the tropical cyclone began to curve northwestward around the southwestern periphery of a ridge of high pressure over the Southeastern United States. Due to wind shear and cooler continental shelf waters, the hurricane continued to weaken. Rita weakened to Category 3 strength before making landfall at 07:40 UTC on September 24 in extreme southwestern Louisiana between Johnson Bayou and Sabine Pass. At the time of landfall, Rita was a Category 3 hurricane with winds of and a barometric pressure of 937 mbar.
Once inland on September 24, Rita began to rapidly weaken. The tropical cyclone had been downgraded to tropical storm intensity nearly 12 hours after landfall. Proceeding northward roughly parallel to the state border between Louisiana and Texas, radar imagery indicated that the storm soon lacked winds of tropical storm-force. Therefore, the NHC classified the system as a tropical depression while it was over Arkansas by 06:00 UTC on September 25, shortly before it turned northeastward ahead of an approaching frontal boundary. Early the next day, the depression lost much of its convection over southeastern Illinois, and degenerated into a remnant low by 06:00 UTC that day. The frontal boundary subsequently absorbed the remaining system six hours later over the southern Great Lakes region.