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Hurricane Jeanne

Category 3 Atlantic hurricane in 2004

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Hurricane Jeanne on September 26, 2004
NASA · Public domain

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The tenth named storm, seventh hurricane, and fifth major hurricane of the season, Jeanne originated near the Lesser Antilles on September 13. During its formative stages, Jeanne dropped 12 inches (300 mm) of precipitation on Guadeloupe, damaging hundreds of buildings from floods. Landslides and flooding affected the Virgin Islands, and around 20 people on St. Thomas required rescue. On September 15, Jeanne struck Puerto Rico as a strong tropical storm, leading to seven deaths during storm preparations, the storm itself, or subsequent carbon monoxide poisoning. A day later, Jeanne attained hurricane status while moving ashore the Dominican Republic. In the country, the hurricane killed 23 people and produced floods that displaced more than 37,000 people from their houses. Jeanne weakened while moving over Hispaniola, producing torrential rainfall over Haiti. In Haiti, the floods and landslides destroyed houses and crop fields across the region. Following a coup d'état in February 2004, the interim government of Haiti relied on security assistance from the United Nations Stabilisation Mission in Haiti (MINUSTAH), as well as international aid to rebuild. Violence and attacks on nongovernment organizations disrupted later aid distribution.

After emerging back into the Atlantic Ocean, Jeanne executed a large clockwise loop, during which time it strengthened into a major hurricane. While at that intensity, Jeanne struck the Bahamas on September 25, hitting the Abaco Islands and Grand Bahama Island. In the Bahamas, Jeanne damaged or destroyed around 800 homes. Across Florida, the hurricane damaged or destroyed thousands of homes, most of which were previously damaged by hurricanes Frances and Charley. The collective impacts of the three hurricanes, in addition to Hurricane Ivan which struck Alabama, produced the largest relief operations in the history of both the American Red Cross and the Federal Emergency Management Agency (FEMA). Total damage from Jeanne in the continental United States was estimated at $7.5 billion. The hurricane also killed six people in Florida, two each in North and South Carolina, and one in Virginia. Although Jeanne weakened over the southeastern United States, it produced floods and an outbreak of 42 tornadoes. Jeanne transitioned into an extratropical cyclone on September 29 when the system was near Washington, D.C. After moving offshore, the circulation dissipated when it was absorbed by a cold front. Due to its effects, the name Jeanne was retired and will never again be used for an Atlantic hurricane.

Meteorological history

A tropical wave exited the west coast of Africa on September 7, accompanied by scattered convection, or thunderstorms. It continued westward across the Atlantic Ocean, steered by a ridge to the north. Further development was hampered by wind shear produced by Hurricane Ivan in the Caribbean Sea. On September 11, convection became slightly better organized as the wave approached the Lesser Antilles, with a broad circulation. Late on September 13, the system developed into Tropical Depression Eleven about 70 miles (110 kilometres) east-southeast of Guadeloupe. At 04:00 UTC on September 14, the depression crossed the island. Later that day, it strengthened into a tropical storm and was named Jeanne by the National Hurricane Center (NHC). Fueled by the warm waters of the Caribbean, the storm developed rainbands, well-defined outflow, and a tight inner-core. Continuing to the west-northwest, Jeanne hit Puerto Rico near Guayama at 16:00 UTC on September 15 with winds of 70 mph (110 km/h). As it moved ashore, Jeanne was in the process of developing an eye. While crossing the island, Jeanne maintained its eye feature, and it intensified further over the Mona Passage. At 11:00 UTC, Jeanne attained hurricane status as it struck the eastern tip of the Dominican Republic on September 16.

Jeanne quickly weakened as it moved along the northern coast of the Dominican Republic. Late on September 17, Jeanne emerged back into the Atlantic Ocean as a tropical depression. Around that time, the NHC noted the potential that Jeanne could strike the southeastern United States within five days, but there was uncertainty related to the remnants of Hurricane Ivan and a building ridge. Jeanne's original circulation dissipated as a new vorticity developed closer to the convection. It regained tropical storm status at 00:00 UTC on September 18. The storm moved northward through the Turks and Caicos Islands and slowly reorganized. Late on September 20, Jeanne re-attained hurricane status while passing northeast of the Bahamas. Around this time, it turned to the east and began executing a clockwise loop. A large eye developed, and the hurricane crossed over its former track on September 23. By this time, cooler waters from upwelling caused Jeanne to weaken briefly, followed by re-intensification. As late as September 24, the NHC anticipated that Jeanne would turn northwestward and move ashore northeastern Florida. However, the ridge to its north caused Jeanne to continue westward. As it moved toward warmer waters, Jeanne's central convection intensified as its outflow improved. At 12:00 UTC on September 25, Jeanne attained major hurricane status, or a Category 3 on the Saffir-Simpson scale. Two hours later, it made landfall on Abaco Island in the Bahamas, before moving over Grand Bahama Island.

Late on September 25, Jeanne attained peak winds of 120 mph (195 km/h), before an eyewall replacement cycle halted further strengthening. At 04:00 UTC on September 26, Jeanne made landfall at peak intensity on the southern end of Hutchinson Island near Stuart, Florida. Its eye was 58 mi (93 km) in diameter, and the minimum barometric pressure at landfall was 950 millibars (28 inches of mercury). The hurricane moved ashore only 5 mi (8.0 km) away from where Hurricane Frances hit 21 days prior. Jeanne weakened while moving inland, quickly losing its eye. It fell to tropical storm status late on September 26 near the Tampa Bay area. After turning northward, Jeanne entered southern Georgia. It weakened into a tropical depression late on September 27. The ridge to its north moved off the coast as a weak cold front moved toward Jeanne. The interaction between nearby dry air and Jeanne's circulation produced conditions favorable for a tornado outbreak. After crossing into Virginia, Jeanne transitioned into an extratropical cyclone at 00:00 UTC on September 29 near Washington, D.C. Later that day, the remnants of Jeanne exited into the Atlantic Ocean and merged with a cold front.

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