2004 Atlantic hurricane season

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Template:Short description Template:Good article Template:Infobox tropical cyclone season The 2004 Atlantic hurricane season was a very deadly, destructive, and extremely active Atlantic hurricane season, with over 3,200 deaths and more than $61 billion (2004 USD, $95.77 billion 2022 USD) in damage.Template:Refn More than half of the 16 tropical cyclones brushed or struck the United States. Due to the development of a Modoki El Niño – a rare type of El Niño in which unfavorable conditions are produced over the Eastern Pacific instead of the Atlantic basin due to warmer sea surface temperatures farther west along the equatorial Pacific – activity was above average. The season officially began on June 1 and ended on November 30, though the season's last storm, Otto, dissipated on December 3, extending the season beyond its traditional boundaries. The first storm, Alex, developed offshore of the Southeastern United States on July 31, one of the latest dates on record to see the formation of the first system in an Atlantic hurricane season. It brushed the Carolinas and the Mid-Atlantic, causing one death and $7.5 million (2004 USD) in damage. Several storms caused only minor damage, including tropical storms Bonnie, Earl, Hermine, and Matthew. In addition, hurricanes Danielle, Karl, and Lisa, Tropical Depression Ten, Subtropical Storm Nicole and Tropical Storm Otto had no effect on land while tropical cyclones. The season was the first to exceed 200 units in accumulated cyclone energy (ACE) since 1995, mostly from Hurricane Ivan, which produced the highest ACE out of any storm this season. Ivan generated the second-highest ACE in the Atlantic, only behind the 1899 San Ciriaco Hurricane.

There are four notable storms: Hurricane Charley, that made landfall in Florida as a Category 4 hurricane on the Saffir–Simpson hurricane wind scale (SSHWS), causing $16 billion in damage in the United States alone. Later in August, Hurricane Frances struck the Bahamas and Florida, causing at least 49 deaths and $10.1 billion in damage. The costliest and most intense storm was Hurricane Ivan. It was a Category 5 hurricane that devastated multiple countries adjacent to the Caribbean, before entering the Gulf of Mexico and causing catastrophic damage on the Gulf Coast of the United States, especially in the states of Alabama and Florida. Throughout the countries it passed through, Ivan caused 129 fatalities and over $26.1 billion in damage. The deadliest storm was Hurricane Jeanne, which caused torrential rainfall in the mountainous areas of Haiti, resulting in mudslides and severe flooding that caused at least 3,000 fatalities. Jeanne also struck Florida, inflicting extensive destruction. Overall, the storm caused at least $7.94 billion in damage and 3,042 deaths, ranking it as one of the deadliest Atlantic hurricanes in history.

Collectively, the storms of this season caused at least 3,261 deaths and about $61.15 billion in damage, making it the costliest Atlantic hurricane season at the time, until surpassed by the following year. As of 2024, it ranks as the seventh costliest Atlantic hurricane season to date. With six hurricanes reaching at least Category 3 intensity, 2004 also had the most major hurricanes since 1996.Template:Refn However, that record would also be surpassed by 2005 and 2020, with seven major hurricanes in those years. In the spring of 2005, four names were retired: Charley, Frances, Ivan, and Jeanne. This tied the then-record most names retired with 1955 and 1995,Template:Refn a mark also surpassed in 2005, when five were retired.

Seasonal forecasts

Predictions of tropical activity in the 2004 season
Source Date Tropical
storms 		Hurricanes Major
hurricanes
CSU Average (1950–2000) 9.6 5.9 2.3
NOAA Average<ref name="noaa-2005records">Template:Cite report</ref> 11 6 2
CSU December 5, 2003 13 7 3
CSU April 2, 2004 14 8 3
NOAA May 17, 2004 12–15 6–8 2–4
CSU May 28, 2004 14 8 3
CSU August 6, 2004 13 7 3
CSU September 3, 2004 16 8 5
CSU October 1, 2004 15 9 6
Actual activity 15 9 6

Since 1984, forecasts of hurricane activity have been issued before each hurricane season by noted hurricane expert Dr. William M. Gray and his associates at Colorado State University (CSU), and separately by forecasters with the U.S. Government's National Oceanic and Atmospheric Administration (NOAA). According to CSU, the average season between 1950 and 2000 had 9.6 tropical storms, 5.9 hurricanes, and 2.3 major hurricanes, which are Category 3 or higher on the Saffir-Simpson hurricane wind scale.<ref name="Gray Dec">Template:Cite report</ref> A normal season, as defined by NOAA, has 12.1 named storms, of which 6.4 reach hurricane strength and 2.7 become major hurricanes.<ref name="Background">Template:Cite report</ref>

CSU released its first prediction on December 5, 2003, which projected an above average season, with 13 named storms, seven hurricanes, and three major hurricanes.<ref>Template:Cite report</ref> This forecast was adjusted upward slightly on April 2.<ref>Template:Cite report</ref> On May 17, prior to the start of the season, NOAA forecasters predicted a 50% probability of activity above the normal range, with twelve to fifteen tropical storms, six to eight of those becoming hurricanes, and two to four those hurricanes reaching major intensity.<ref name="NOAA May">Template:Cite report</ref> Dr. Gray released a prediction on May 28 that was similar, with 14 named storms, eight reaching hurricane strength, and three becoming major hurricanes.<ref name="Gray May">Template:Cite report</ref>

After the season began, Dr. Gray announced he had revised his predictions slightly downwards on August 6, citing mild El Niño conditions. His new forecast was thirteen named storms, seven hurricanes, and three reaching major hurricane intensity.<ref name="Gray Aug">Template:Cite report</ref> On August 10, NOAA released an updated prediction as well, with a 90% probability of above-to-near normal activity, but the same number of storms forecast.<ref name="NOAA Aug">Template:Cite report</ref> CSU issued another forecast on September 3, indicating sixteen tropical storms, eight hurricanes, and five major hurricanes.<ref>Template:Cite report</ref> The season ended up with sixteen tropical depressions, fifteen named storms, nine hurricanes, and six major hurricanes,<ref name="mwr">Template:Cite report</ref> which matched CSU's final prediction on October 1.<ref>Template:Cite report</ref>

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Seasonal summary

Template:For timeline Template:Center

File:FEMA - 12091 - Photograph by FEMA ITS Mapping and Analysis taken on 11-04-2004 in District of Columbia.jpg
Map of counties in the United States designated as disaster areas in the aftermath of a storm(s)

The Atlantic hurricane season officially began on June 1, 2004.<ref name="NOAA Aug"/> However, the first system, Hurricane Alex, did not develop until July 31. It was an above average season in which 16 tropical cyclones formed. All but one tropical depression attained tropical storm status, and nine of these became hurricanes. Six hurricanes further intensified into major hurricanes.<ref name="mwr"/> Due to a Modoki El Niño – a rare type of El Niño in which unfavorable conditions are produced over the eastern Pacific instead of the Atlantic basin due to warmer sea surface temperatures farther west along the equatorial Pacific – activity was above average.<ref>Template:Cite news</ref> Five hurricanes and three tropical storms made landfall during the season and caused 3,270 deaths and about $60.9 billion in damage.<ref name="impact">Template:Cite report

Tropical cyclogenesis began at the end of July, with the development of Hurricane Alex on July 31.<ref name="mwr"/> However, it did not become a named storm until the following day, which was the fifth-latest start since the 1952 season.<ref name="late">Template:Cite news</ref> August was an unusually active month, with eight named storms, including Alex, Bonnie, Charley, Danielle, Earl, Frances, Gaston, and Hermine.<ref name="mwr"/> This broke the record for the most named storms in the month of August set in 1933 and 1995.<ref>Template:Cite report</ref> This new record was tied in 2012. On average, there are only three tropical storms and one to two hurricanes in August.<ref>Template:Cite report</ref> Of the eight systems that month, five became hurricanes and three strengthened further into major hurricanes. A total of five tropical cyclones developed in September, including the most intense system of the season, Hurricane Ivan. Activity decreased further in October, with the formation of only two systems, Tropical Storm Matthew and Subtropical Storm Nicole. The season then went dormant for over a month and a half, until Tropical Storm Otto developed on November 29. Otto was the final tropical cyclone of the season and degenerated into a remnant low pressure on December 3.<ref name="mwr"/>

File:Frances and Ivan 2004-09-05 1515Z.jpg
Hurricanes Frances (top left) and Ivan (bottom right) on September 5

Reflecting the season's high activity, the accumulated cyclone energy (ACE) index for the 2004 Atlantic hurricane season was 227 units,<ref group="nb">The total represents the sum of the squares of the maximum sustained wind speed (knots) for every (sub)tropical storm's intensity of over Template:Convert, divided by 10,000 while they are above that threshold; therefore, tropical depressions are not included.</ref><ref name="ACE">Template:Cite report</ref> one of the highest values on record in the basin. ACE is, broadly speaking, a measure of the power of the hurricane multiplied by the length of time it existed, so storms that last a long time, as well as particularly strong hurricanes, have high ACEs. It is only calculated for full advisories on tropical systems at or exceeding Template:Convert, which is tropical storm strength.<ref name="ACE" />

The 2004 season was very deadly, with about 3,270 fatalities overall. Nearly all of the deaths were reported in Haiti following the floods and mudslides caused by Tropical Storm Jeanne. The other tropical cyclones that caused fatalities include Hurricane Alex, Charley, Frances, Gaston, and Ivan, and Tropical Storms Bonnie and Earl.<ref name="impact"/> Because four out of the six major hurricanes made several landfalls, the season was also extremely damaging, with losses estimated at $60.9 billion, over half of which was caused by Hurricanes Charley and Ivan.<ref name="mwr"/><ref name="costliest">Template:Cite report</ref> A few other tropical cyclones caused light to moderate damage, including Hurricanes Alex and Gaston and Tropical Storms Bonnie and Matthew. In addition to the 16 tropical cyclones of the season, a tropical low in May brought torrential flooding to Haiti and the Dominican Republic, killing 2,000 people and causing extensive damage. Although the system was not officially classified as a tropical storm, it did have a circulation with loosely organized convection, resembling a subtropical cyclone.<ref name="May-Haiti">Template:Cite report</ref> Template:List of costliest Atlantic hurricane seasons

Records

The 2004 season had numerous unusual occurrences and set many records. However, most of them were surpassed by the following year. With six hurricanes reaching at least Category 3 intensity, 2004 also had the most major hurricanes since 1996, a record which would be surpassed in 2005.<ref name="ACE" /> Florida was directly impacted by four major hurricanes during the season – Hurricane Charley, Frances, Ivan, and Jeanne. This was the first time four tropical cyclones produced hurricane-force winds in one state during a single season since four hurricanes made landfall in Texas in 1886.<ref>Template:Cite report</ref> There were many other hurricanes in the season that were individually unusual. Hurricane Alex was the strongest hurricane on record to intensify north of 38°N latitude.<ref name="AlexTCR">Template:Cite report</ref> Hurricane Ivan was the most unusual storm of the season. Ivan became the southernmost Category 4 hurricane on record in the Atlantic basin, as well as the first major hurricane in the Atlantic on record to form as low as 10°N latitude.<ref name="itcr"/> A Template:Convert wave, possibly the largest ever recorded, was attributed to Ivan; this wave may have been as high as Template:Convert.<ref>Template:Cite news</ref> Additionally, hurricanes Charley and Ivan ranked as the third and second costliest hurricanes in the United States at the time, respectively, behind only Hurricane Andrew.<ref name="costliest"/> With $60.9 billion in damage,<ref name="impact"/> this was the costliest season at the time, until the following year.<ref>Template:Cite report</ref> Template:Clear

Systems

Hurricane Alex

Template:Main Template:Infobox tropical cyclone small The interaction between a trough and tropical wave resulted in the development of a tropical depression on July 31, while centered about Template:Convert east of Jacksonville, Florida. After initially being poorly organized, the depression strengthened into Tropical Storm Alex late on August 1. The storm tracked northeastward and became a hurricane on August 3. As Alex moved out to sea, it intensified into a Category 3 hurricane and peaked with winds of Template:Convert. Alex reached major hurricane status second farthest north in the Atlantic, after Hurricane Ellen in 1973. Eventually, Alex weakened due to cooler sea surface temperatures. The hurricane fell to tropical storm intensity around 12:00 UTC on August 6. Six hours later, it became extratropical while located about Template:Convert east of Cape Race, Newfoundland, and was soon absorbed by a large extratropical cyclone.<ref name="AlexTCR"/>

Rough seas and a storm surge up to Template:Convert on the Outer Banks of North Carolina caused minor beach erosion and washed out portions of a highway in Cape Fear. A man drowned near Nags Head due to these conditions. Strong winds also pelted the area, with sustained winds reaching Template:Convert and gusts up to Template:Convert in Hatteras.<ref name="AlexTCR"/> As a result, 10,000 buildings and houses were left without electricity.<ref name="power">Template:Cite news</ref> The combination of strong winds and the storm surge damaged more than 100 buildings and houses.<ref name="mornws">Template:Cite report</ref> At Ocracoke, coastal flooding was considered the worst since Hurricane Gloria in 1985.<ref name="AlexTCR"/> Additionally, rainfall up to Template:Convert on the Outer Banks flooded nearly 500 cars.<ref name="mornws"/> Damage in North Carolina reached about $7.5 million. In Rehoboth Beach, Delaware, three people were injured by rip currents, while five others were hospitalized in New Jersey.<ref name="stormdata8">Template:Cite report</ref> Template:Clear

Tropical Storm Bonnie

Template:Main Template:Infobox tropical cyclone small

A tropical wave developed into Tropical Depression Two on August 3, while located about Template:Convert east of Barbados. The depression crossed the Lesser Antilles on August 4, before degenerating back into a tropical wave. The remnants traversed the Caribbean Sea, and re-developed into Tropical Depression Two on August 8. The depression strengthened further upon reaching the Gulf of Mexico and was upgraded to Tropical Storm Bonnie on August 9. A break in a mid-level ridge re-curved Bonnie northward on August 10 and then northeastward on August 11. Later that day, the storm peaked with winds of Template:Convert, before wind shear began weakening it. At 14:00 UTC on August 12, Bonnie made landfall near Apalachicola, Florida with winds of Template:Convert. The storm rapidly weakened inland and degenerated as a remnant low offshore of New Jersey on August 14.<ref name="btcr">Template:Cite report</ref>

In the Lesser Antilles, the storm brought light winds and mostly localized flooding to Saint Vincent and the Grenadines.<ref name="stvindam">Template:Cite report</ref> The regenerated system brought light rainfall to the Yucatán Peninsula.<ref>Template:In lang Template:Cite report</ref> In North Florida, scattered power outages were reported, and rainfall and storm surge flooded roads, especially in Taylor County. A tornado in Jacksonville damaged several businesses and homes. Tornadoes were also reported in The Carolinas, and Virginia, with one in North Carolina destroying 17 homes and impacting 59 others. It also caused three deaths and $1.27 million in damage.<ref name="stormdata8"/> In Greenville County, South Carolina, a few roads were washed out, while portions of U.S. Route 501 were inundated with Template:Convert of water.<ref>Template:Cite news</ref> Minor flooding also occurred in Mid-Atlantic and New England.<ref name="stormdata8"/> In Atlantic Canada, basement and road flooding was reported, especially in Edmundston, New Brunswick, New Brunswick. Slick roads caused one death in that area.<ref>Template:Cite report</ref> Template:Clear

Hurricane Charley

Template:Infobox tropical cyclone small Template:Main A tropical wave developed into Tropical Depression Three on August 9 to the south-southeast of Barbados. Early on August 10, it was upgraded to Tropical Storm Charley, before reaching hurricane intensity south of Jamaica on August 11. Charley continued to strengthen after curving northwestward and was a Template:Convert Category 3 hurricane when it made landfall near Alquízar, Cuba on August 13. After emerging into the Straits of Florida, Charley weakened to a Category 2 hurricane. However, the storm abruptly strengthened into a Category 4 hurricane later on August 13, with winds peaking at Template:Convert. At 19:45 UTC on August 13, Charley made landfall at Cayo Costa, Florida, followed by another landfall in Punta Gorda about an hour later. Charley rapidly weakened over Florida, falling to Category 1 by early on August 14. Later that day, the storm emerged into the Atlantic, before making two more landfalls in Cape Romain and Myrtle Beach, South Carolina as a minimal hurricane. Late on August 14, Charley weakened to a tropical storm over southeastern North Carolina, shortly before becoming extratropical near Virginia Beach, Virginia.<ref name="ctrc">Template:Cite report</ref>

The storm brought rainfall and strong winds to the island of Jamaica. In Westmoreland Parish, flooding inundated several homes and damaged roadways. Winds in the parish caused a large tree to fall on a house, resulting in significant damage to the home.<ref name="Jamaica5">Template:Cite report</ref> In Kingston, high winds damaged power lines and homes. Widespread power outages occurred due to numerous downed trees and power lines.<ref name="Jamaica11">Template:Cite news</ref> The storm left $4.1 million in damage and one fatality in Jamaica.<ref name="2004wmo">Template:Cite report</ref> Winds up to Template:Convert in Cuba left all of Pinar del Río Province and more than 50% of La Habana Province without electricity for several days.<ref name="2004wmo"/><ref name="cubass">Template:Cite report</ref> At least 70,290 homes and about 3,000 agricultural buildings were either damaged or destroyed. Roughly 95% of sugar cane, bean, and banana crops were ruined. There were four deaths and $923 million in damage.<ref name="cubass"/> Impact in Florida was extreme: strong winds caused 2 million power outages and destroyed more than 2,439 structures and impacted over 26,749 others. Charley caused 24 deaths and 792 injuries. Agricultural losses were heavy, especially to oranges. Damage to agriculture totaled about $2.2 billion. In South Carolina, 2,231 houses were damaged, with 2,317 of those severely damaged and 40 were destroyed.<ref name="stormdata8"/> Approximately 141,000 people were left without electricity. Port Charlotte was left without electricity for 13 days.<ref>Template:Cite report</ref> Winds up to Template:Convert in North Carolina downed trees and power lines, and left 65,000 homes without power. Charley destroyed 40 houses and damaged 2,231 other homes in the state.<ref name="stormdata8"/> Throughout the United States, the storm caused $16 billion in damage,<ref name="costliest"/> with nearly of all of it in Florida.<ref name="stormdata8"/> The remnants of Charley produced light rainfall in Nova Scotia and Newfoundland.<ref>Template:Cite report</ref> Template:Clear

Hurricane Danielle

Template:Infobox tropical cyclone small A tropical wave developed into Tropical Depression Four while south-southeast of Cape Verde on August 13.<ref name="dtcr">Template:Cite report</ref> Although sea surface temperatures were only marginally warm,<ref>Template:Cite report</ref> the depression strengthened into Tropical Storm Danielle early on August 14. Further intensification occurred and by early on August 15, Danielle reached hurricane status. The storm deepened significantly over the next 24 hours and became a Category 2 hurricane. Later on August 16, Danielle peaked as strong Category 2 hurricane with winds of Template:Convert and a minimum barometric pressure of Template:Convert.<ref name="dtcr"/>

At the time of peak intensity on August 16, Danielle was heading northward to north-northwestward because of a subtropical ridge. Shortly thereafter, southwesterly vertical shear began increasing, causing the hurricane to weaken. Mid-level flow associated with a diffluent trough caused Danielle to move northeastward on August 18. Later that day Danielle deteriorated to a Category 1 hurricane, hours before being downgraded to a tropical storm. On August 19, Danielle became nearly stationary and moved erratically while southwest of the Azores. Eventually, the storm curved west-southwestward and weakened to a tropical depression on August 20. About 24 hours later, Danielle degenerated into a remnant low-pressure area. The remnant low moved westward and then to the north-northwest, before dissipating about Template:Convert west-southwest of the westernmost islands of the Azores.<ref name="dtcr"/> Template:Clear

Tropical Storm Earl

Template:Infobox tropical cyclone small Template:Main By August 13, a tropical wave developed into Tropical Depression Five while located about Template:Convert east of the Lesser Antilles. The depression headed westward between Template:Convert due to a strong subtropical ridge located to its north. After developing banding features and an increase in Dvorak intensity estimates, the depression was upgraded to Tropical Storm Earl at 18:00 UTC on August 14. The storm strengthened slightly further and on the following day, it reached maximum sustained winds of Template:Convert. Later on August 15, Earl crossed the Windward Islands and passed just south of Grenada.<ref name="etcr">Template:Cite report</ref>

Although Earl appeared well-organized, it unexpectedly degenerated into a tropical wave on August 16, after a reconnaissance aircraft reported no closed circulation. The remnants eventually reached the Pacific Ocean and developed into Hurricane Frank on August 23.<ref name="etcr"/> Tropical storm force winds and heavy rainfall in Grenada damaged at least 34 homes<ref name="GrenadaReport">Template:Cite news</ref> and a nursing home<ref name="HB1">Template:Cite news</ref> and toppled several trees and electrical poles.<ref name="GrenadaReport"/> Damage on other islands was confined to a few impacted homes, moderate crop losses, and widespread power outages, especially in Saint Vincent and the Grenadines and Tobago.<ref name="JO1">Template:Cite news</ref> One fatality occurred and 19 people were listed as missing.<ref name="swissre">Template:Cite report</ref> Template:Clear

Hurricane Frances

Template:Infobox tropical cyclone small Template:Main Template:See also Around 00:00 UTC on August 24, a tropical wave developed into Tropical Depression Six, while located about Template:Convert west-southwest of the southernmost islands of Cape Verde. Moving west-northwestward, the depression strengthened into Tropical Storm Frances later that day. Frances reached hurricane status late on August 25 while curving northwestward. By August 28, the storm reached an initial peak intensity as a Category 4 hurricane with winds of Template:Convert. Late the following day, Frances weakened to a Category 3 hurricane during an eyewall replacement cycle. However, by August 31, the storm re-intensified into a Category 4 hurricane and attained its maximum sustained wind speed of Template:Convert. Although approaching the Bahamas, wind shear and increasing westerly winds aloft caused Frances to weaken to a Category 3 hurricane late on September 2.<ref name="FrancesTCR"/>

At 19:30 UTC on September 2, the system made landfall on San Salvador Island with winds of Template:Convert. Early the next day, Frances struck Cat Island while somewhat weaker. The system decelerated and weakened slightly to a Category 2 hurricane before landfall in Eleuthera hours later. By September 4, Frances made another landfall on Grand Bahama with winds of Template:Convert. Moving slowly west-northwestward, the hurricane made landfall in Hutchinson Island, Florida at the same intensity, early on September 5. Rapidly weakening, Frances fell to Category 1 intensity around midday and deteriorated to a tropical storm about six hours later. On September 6, the storm emerged into the Gulf of Mexico near New Port Richey, before another landfall at the mouth of the Aucilla River with winds of Template:Convert. Early on September 7, Frances weakened to a tropical depression over Georgia. By late the next day, the system became extratropical, though the remnants persisted until dissipation over the Gulf of Saint Lawrence on September 11.<ref name="FrancesTCR">Template:Cite report</ref>

In the Bahamas, about 75% of residents lost electricity. Between 13 and 17 percent of the non-native Australian pine on San Salvador Island experienced damage, primarily from snapping, though some browning from salt spray was noted.<ref>Template:Cite journal</ref> Several feet of water flooded the international airport at Freeport.<ref>Template:Cite news</ref> Insured losses reached about $300 million.<ref>Template:Cite report</ref> Severe damage was also dealt to banana, corn, and pineapple crops. About 4,160 homes received minor damage, while 2,522 houses were rendered uninhabitable or destroyed.<ref name="bahamasaftermath">Template:Cite report</ref> About 700 people were left homeless. Additionally, sea walls, schools, bridges, roads, and docks were damaged.<ref name="reuters">Template:Cite news</ref> Strong winds brought severe damage to Florida, especially counties along the east coast. Hundreds of homes, mobile homes, and businesses were destroyed in Indian River, Martin, and St. Lucie counties, and damage was inflicted on thousands of other structures there. In the tri-county area alone, damage totaled approximately $4.5 billion.<ref name="stormdata9">Template:Cite report</ref> Palm Beach County also suffered particularly severely, with 15,000 houses and 2,400 businesses damaged there.<ref>Template:Cite report</ref> About 4.27 million customers were left without electricity in Florida.<ref name="fl2004energy">Template:Cite report</ref> Frances and its remnants brought extensive flooding to other states, especially in Georgia, North Carolina, Ohio, and Pennsylvania.<ref name="stormdata9"/> The storm spawned 101 tornadoes in the United States, with 45 in South Carolina alone.<ref name="FrancesTCR"/> Damage in the United States totaled approximately $9.8 billion, placing Frances among the costliest hurricanes in the country.<ref name="costliest"/> Overall, the storm caused 49 deaths, two each in the Bahamas and Ohio, eight in Georgia, and thirty-seven in Florida.<ref name="FrancesTCR"/> Template:Clear

Hurricane Gaston

Template:Infobox tropical cyclone small Template:Main A frontal low-pressure area developed into Tropical Depression Seven at 12:00 UTC on August 27, while located about Template:Convert east-southeast of Charleston, South Carolina. The depression gradually strengthened and was upgraded to Tropical Storm Gaston early on August 28. Initially, Gaston tracked slowly, moving southeastward and then westward, before a developing mid- to upper-level ridge re-curved the storm northwestward. Gaston strengthened and briefly became a hurricane at 12:00 UTC on August 29, although operationally it was thought to have peaked as a strong tropical storm. Two hours later, the storm made landfall near Awendaw, South Carolina with winds of Template:Convert. Gaston weakened rapidly inland and was only a tropical depression by early on August 30. Gaston re-strengthened into a tropical storm while located over eastern Virginia on August 31, just hours before emerging into the Atlantic. Gaston re-intensified slightly further, but became extratropical near Sable Island on September 1.<ref name="GastonTCR">Template:Cite report</ref>

In South Carolina, an unofficial measurement indicated wind gusts up to Template:Convert in South Capers Island, which is near Parris Island.<ref name="GastonTCR"/> Strong winds destroyed eight homes, damaged more than 3,000 buildings, and left more than 150,000 people without power.<ref name="stormdata9"/> Additionally, flash flooding further inland severely damaged or destroyed at least 20 homes in Berkeley County.<ref name="GastonTCR"/> In North Carolina, widespread street flooding occurred, including inundation of portions of Interstates 40 and 95. Several trees were downed by strong winds, especially in Chatham and Johnston counties. A tornado in Hoke County damaged several homes.<ref name="stormdata8"/> Severe flooding occurred in east-central Virginia due to rainfall amounts up to Template:Convert.Template:Tropical Cyclone Point Maxima In Chesterfield, Dinwiddie, Hanover, Henrico, and Prince George counties, 350 homes and 230 businesses were damaged or destroyed,<ref name="GastonTCR"/> and many roads were closed due to high water. In Richmond, more than 120 roads were closed, including a portion of Interstate 95.<ref>Template:Cite news</ref> There were nine fatalities. Throughout the United States, Gaston caused about $130 million in damage.<ref name="GastonTCR"/> The remnants produced light rainfall in Nova Scotia, Newfoundland, and Sable Island.<ref>Template:Cite report</ref> Template:Clear

Tropical Storm Hermine

Template:Infobox tropical cyclone small The frontal zone that spawned Hurricane Gaston developed an area of convection south of Bermuda on August 25. After detaching from the front and developing a circulation, the system became a tropical depression at 18:00 UTC on August 27. It initially remained weak while the convection fluctuated, until intensifying into Tropical Storm Hermine at 12:00 UTC on August 29.<ref name="HermineTCR">Template:Cite report</ref> Later that day, wind shear exposed the circulation to the north of the convection,<ref>Template:Cite report</ref> though the storm was able to a peak as a Template:Convert tropical storm on August 30.<ref name="HermineTCR"/> The storm turned northward under the steering currents of a subtropical ridge.<ref>Template:Cite report</ref> Increased wind shear from Gaston weakened Hermine. By late on August 30, the circulation was entirely exposed from the convection.<ref name="HermineTCR"/><ref>Template:Cite report</ref>

Early on August 31, Hermine made landfall near New Bedford, Massachusetts as a minimal tropical storm. It rapidly weakened while moving northward, and after becoming extratropical, Hermine was absorbed by a frontal zone later that day. The storm brought tropical storm force winds and light rainfall to eastern Massachusetts, reaching about Template:Convert on Cape Cod.<ref name="HermineTCR"/> The remnants of Hermine tracked across New Brunswick and produced locally heavy rainfall, peaking at about Template:Convert. In Moncton, minor basement flooding and street closures were reported.<ref name="h-ec">Template:Cite report</ref> Template:Clear

Hurricane Ivan

Template:Infobox tropical cyclone small Template:Main Template:See also A westward-moving tropical wave developed into a tropical depression on September 2, before becoming Tropical Storm Ivan on the following day. Tracking westward, Ivan gradually strengthened, reaching hurricane intensity on September 5. On September 6, the storm strengthened significantly, becoming a Category 4 hurricane, despite being located at an unusually low latitude. It subsequently weakened, though it reached major hurricane status again the next day. Late on September 7, Ivan passed close to Grenada while heading west-northwestward. Although located near the Netherlands Antilles on September 9, Ivan briefly became a Category 5 hurricane. During the next five days, Ivan fluctuated between a Category 4 and 5 hurricane. The storm passed south of Jamaica on September 11 and then the Cayman Islands on the next day. Although curving northwestward, Ivan brushed western Cuba as a Category 5 hurricane on September 14.<ref name="itcr"/>

Shortly after moving to the west of Cuba on September 14, Ivan entered the Gulf of Mexico. Over the next two days, the storm gradually weakened while tracking north-northwestward and northward. At 06:50 UTC on September 16, Ivan made landfall near Gulf Shores, Alabama with winds of Template:Convert. It quickly weakened inland, falling to tropical storm status later that day and tropical depression strength by early on September 17. The storm curved northeastward and eventually reached the Delmarva Peninsula, where it became extratropical on September 18. The remnants of Ivan moved southward and then southwestward, crossing Florida on September 21 and re-entering the Gulf of Mexico later that day. Late on September 22, the remnants regenerated into Ivan in the central Gulf of Mexico as a tropical depression, shortly before re-strengthening into a tropical storm. After reaching winds of Template:Convert, wind shear weakened Ivan back to a tropical depression on September 24. Shortly thereafter, Ivan made a final landfall near Holly Beach, Louisiana with winds of Template:Convert and subsequently dissipated hours later.<ref name="itcr">Template:Cite report</ref>

Throughout the Lesser Antilles and in Venezuela, Ivan caused 44 deaths and slightly more than $1.15 billion in losses, with nearly all of the damage and fatalities in Grenada.<ref name="itcr"/><ref name="2004wmo"/> Although Ivan was passing south of Hispaniola, the outer bands of the storm caused four deaths in the Dominican Republic.<ref name="2004wmo"/> In Jamaica, high winds and heavy rainfall left $360 million in damage and killed 17 people.<ref name="itcr"/> The storm brought strong winds to the Cayman Islands, resulting in two deaths and $3.5 billion in damage. In Cuba, a combination of rainfall, storm surge, and winds resulted in $1.2 billion in damage, but no fatalities.<ref name="2004wmo"/> Heavy damage was reported along the Gulf Coast of the United States. Along the waterfront of Escambia and Santa Rosa counties in Florida, nearly every structure was impacted.<ref name="stormdata9"/> In the former, 10,000 roofs were damaged or destroyed. About 4,600 homes were demolished in the county.<ref>Template:Cite news</ref> Similar impact occurred in Alabama. Property damage was major along Perdido Bay, Big Lagoon, Bayou Grande, Pensacola Bay and Escambia Bay. A number of homes were completely washed away by the high surge. Further inland, thousands of other houses were damaged or destroyed in many counties.<ref name="stormdata9"/> Ivan produced a record tornado outbreak, with at least 119 twisters spawned collectively in nine states.<ref name="NWSTallahassee">Template:Cite report</ref> Throughout the United States, the hurricane left 54 fatalities and $20.5 billion in damage.<ref name="costliest"/><ref name="itcr"/> Six deaths were also reported in Atlantic Canada.<ref>Template:Cite report</ref> Template:Clear

Tropical Depression Ten

Template:Infobox tropical cyclone small A tropical wave accompanied with a well-organized area of convection emerged off the western coast of Africa on August 29. Performing a slow curve over the eastern Atlantic, the wave became increasingly less-defined over subsequent days as a result of strong southwesterly wind shear. Following the development of shower and thunderstorm activity near the center, the system acquired enough organization to be deemed a tropical depression at 12:00 UTC on September 7, while positioned about Template:Convert southwest of the southernmost Azores. Hostile environmental conditions caused the depression to remain below tropical storm intensity and subsequently degenerate into a remnant low by 12:00 UTC on September 9 after the center decoupled from the remainder of the convective activity. The low-level circulation persisted near the Azores until dissipating the following day.<ref>Template:Cite report</ref> Template:Clear

Hurricane Jeanne

Template:Infobox tropical cyclone small Template:Main Template:See also Tropical Depression Eleven developed from a tropical wave at 18:00 UTC on September 13, while located about Template:Convert east-southeast of Guadeloupe. After crossing the island while moving west-northwestward, the depression intensified into Tropical Storm Jeanne around midday on September 14. It strengthened further in the Caribbean Sea, before making landfall near Guayama, Puerto Rico with winds of Template:Convert at 16:00 UTC the following day. Hours later, Jeanne emerged into the Mona Passage and resumed deepening, becoming at Category 1 hurricane at midday on September 16. Around the time, the hurricane made another landfall at the eastern tip of Dominican Republic with winds of Template:Convert. By early on September 17, Jeanne weakened to a tropical storm due to its slow movement over the rough terrain of Hispaniola, and briefly fell to tropical depression intensity at 18:00 UTC. After re-emerging into the Atlantic, the storm then moved generally northward. After the system passed between the eastern Bahamas and Turks and Caicos Islands on September 18, slow re-intensification occurred.<ref name="JeanneTCR">Template:Cite report</ref>

Late on September 20, Jeanne again became a Category 1 hurricane; around that time, it began to execute an anti-cyclonic loop. The storm moved eastward, before a trough of low pressure caused Jeanne to curve southeastward. Early on September 22, the system strengthened into a Category 2 hurricane. A deep-layer ridge slowly curved Jeanne to the west by the following day, around the time it weakened to a Category 1 hurricane due to upwelled waters. However, the storm began re-intensifying on September 24, becoming a Category 2 hurricane again that day and a Category 3 by September 25. At 14:00 UTC on the latter, Jeanne struck the Abaco Islands in the Bahamas with winds of Template:Convert. The hurricane strengthened slightly further, peaking with maximum sustained winds of Template:Convert. Jeanne made its final landfall on Hutchinson Island, Florida at the same time around 04:00 UTC on September 26. It quickly weakened after moving inland and fell to tropical storm intensity only 14 hours later. Curving northward, Jeanne decayed to a tropical depression over Georgia late on September 27. Jeanne turned northeastward and became extratropical over Virginia after about 24 hours. The remnants briefly re-strengthened after moving offshore the Delmarva Peninsula, but dissipated late on September 29.<ref name="JeanneTCR"/>

In Guadeloupe, rainfall amounts up to Template:Convert caused flooding and mudslides throughout the island.<ref name="2004wmo"/> Many roads and bridges were inundated or washed out. About 470 homes were damaged or destroyed.<ref name="maxi">Template:Cite news</ref> Similar impact was reported in Puerto Rico, with heavy precipitation causing flooding and mudslides. There was also heavy damage to crops, schools, houses, and businesses. Strong wind gusts left 70% of the island without power. Jeanne resulted in $169.9 million in damage and eight deaths.<ref name="stormdata9"/> In Dominican Republic, major flooding was reported, with rivers overflowing, bridges collapsing, roads cut off, damage to agriculture, and mudslides. Strong winds disrupted telephone services and caused power outages. Overall, hundreds of people became homeless and there was 23 deaths and $270 million in damage. Up to Template:Convert of rain fell on the mountainous region of Haiti, causing extreme flooding and mudslides, especially in the Gonaïves area.<ref name="2004wmo"/> Over 200,000 people were left homeless and an estimated 3,006 fatalities occurred.<ref name="2004wmo"/><ref>Template:Cite web</ref> In the Bahamas, communications were disrupted and some homes were inundated by storm surge in the Abaco Islands. Similar impact was reported on Grand Bahama, with several houses and the airport being flooded. Further, winds tore-off and damaged a number of roofs.<ref>Template:Cite report</ref> Throughout the state of Florida, strong winds were observed, leaving approximately 3.44 million people without electricity.<ref name="fl2004energy"/> Additionally, more than 101,611 homes were impacted by the storm, almost 14,000 of which severely or beyond repairs.<ref name="stormdata9"/><ref>Template:Cite report</ref> Several other states experienced severe flooding.<ref name="stormdata9"/> Overall, there were five deaths and about $7.5 billion in damage in the United States.<ref name="costliest"/><ref name="JeanneTCR"/> Template:Clear

Hurricane Karl

Template:Infobox tropical cyclone small A strong tropical wave exited the coast of Africa on September 13 and proceeded westward. The wave gradually became better organized, and the NHC designated it Tropical Depression Twelve on September 16, while the system was located about Template:Convert west-southwest of the Cape Verde islands. That afternoon, the depression was upgraded to Tropical Storm Karl.<ref name="KarlTCR">Template:Cite report</ref> Due to healthy outflow around an upper-level anticyclone and warm sea surface temperatures of the year, rapid deepening began on the evening of September 17,<ref>Template:Cite web</ref> with the storm developing a small eye.<ref name="noaa18">Template:Cite web</ref> Karl intensified into a hurricane early on September 18.<ref name="KarlTCR"/> Late in the evening of September 18, Karl attained Category 3 status, becoming the sixth major hurricane of 2004. On September 19, Karl continued to strengthen while maintaining a well-defined eye, moving northwestward across the open Atlantic.<ref>Template:Cite web</ref> The storm briefly deepened to a Category 4 hurricane on September 20, before weakening slightly and subsequently re-strengthening to that intensity. With a steadily increasing wind field, Karl peaked with maximum sustained winds of Template:Convert early on September 21 while resuming a northwestward motion.<ref name="KarlTCR"/>

After reaching its peak intensity, Karl weakened due to increasing wind shear,<ref>Template:Cite report</ref> as well as an eyewall replacement cycle.<ref>Template:Cite web</ref> The hurricane weakened to a Category 2 hurricane on September 22 as it curved to the northeast in response to a baroclinic trough.<ref name="KarlTCR"/> After wind shear lessened,<ref>Template:Cite report</ref> Karl briefly became a major hurricane again on September 23.<ref name="KarlTCR"/> However, wind shear returned later that day and ocean temperatures began cooling.<ref>Template:Cite report</ref> Another trough re-curved Karl northward on September 24 as the storm was gradually weakening. Early on September 25, Karl became extratropical while located about Template:Convert east of Cape Race, Newfoundland. The remnants of Karl accelerated northeastward and then east-northeastward, later moving through the Faroe Islands. Sustained winds up to Template:Convert and gusts reaching Template:Convert were observed on Mykines.<ref name="dmi">Template:In lang Template:Cite report</ref><ref name="KarlTCR"/> The extratropical remnants of Karl moved ashore western Norway on September 28, dissipating soon as it was absorbed into another extratropical low.<ref name="KarlTCR"/> Template:Clear

Hurricane Lisa

Template:Infobox tropical cyclone small At 18:00 UTC on September 19, a tropical wave developed into Tropical Depression Thirteen, which was centered located about Template:Convert west-southwest of Cape Verde. Despite unfavorable conditions due to outflow from nearby Hurricane Karl, the depression strengthened into Tropical Storm Lisa on September 20. After nearly reaching hurricane status, Lisa began executing a small cyclonic loop due to a Fujiwhara interaction with a tropical wave. Additionally, the interaction caused Lisa to weaken to a tropical depression on September 23. As Lisa merged with the tropical wave, convection became difficult to distinguish between the two systems, although Lisa maintained a distinct low-level circulation throughout the merger.<ref name="ltcr">Template:Cite report</ref> During the next several days, the storm fluctuated in intensity, from a tropical depression to a strong tropical storm. A deep mid- to upper-level trough caused Lisa to turn northward on September 25.<ref name="ltcr"/>

By October 1, a short-wave trough re-curved and accelerated Lisa toward the northeast. The storm strengthened and was finally upgraded to a hurricane at 06:00 UTC on October 2. At that time, Lisa attained its peak intensity with winds of Template:Convert and a minimum barometric pressure of Template:Convert. After sea surface temperatures dropped to around Template:Convert, Lisa weakened and was downgraded to a tropical storm later on October 2. The storm lost tropical characteristics and transitioned into an extratropical cyclone at 12:00 UTC on October 3. Shortly thereafter, the remnants of Lisa were absorbed by a frontal zone while located about Template:Convert of Cape Race, Newfoundland.<ref name="ltcr"/> Template:Clear

Tropical Storm Matthew

Template:Infobox tropical cyclone small Template:Main A tropical wave developed into Tropical Depression Fourteen on October 8, while located about Template:Convert southeast of Brownsville, Texas. The depression strengthened into Tropical Storm Matthew about six hours later. The storm moved generally northeastward or northward throughout its duration. After briefly weakening, Matthew attained its peak intensity late on October 9, with maximum sustained winds of Template:Convert and a minimum barometric pressure of Template:Convert. At 11:00 UTC on October 10, Matthew made landfall near Cocodrie, Louisiana with winds of Template:Convert. Only an hour later, Matthew weakened to a tropical depression and became extratropical early on October 11.<ref name="MatthewTCR">Template:Cite report</ref>

The storm dropped heavy rainfall in southeastern Louisiana, with a peak total of Template:Convert near Haynesville.Template:Tropical Cyclone Point Maxima Along the coast, storm surge up to Template:Convert was observed at Frenier.<ref name="MatthewTCR"/> A combination of storm surge and heavy rainfall inundated numerous roads in Lafourche, Orleans, St. Bernard, St. John the Baptist, St. Tammany, and Terrebonne parishes. About 20 homes in Terrebonne Parish were damaged, while several others were flooded in Lafourche Parish. A tornado also damaged the roof of a trailer in Golden Meadow.<ref name="stormdata10"/> Winds resulted in electrical outages for approximately 2,500 customers. The storm cracked water lines in LaPlace, leaving nearly 30,000 residents without tap water.<ref>Template:Cite news</ref> Overall, losses in Louisiana reached $255,000. In Mississippi, storm surge caused coastal flooding in Hancock County. Damage in the state totaled only $50,000.<ref name="stormdata10"/> Template:Clear

Subtropical Storm Nicole

Template:Infobox tropical cyclone small Template:Main The interaction between an upper-level trough and a decaying cold front led to the development of a low-pressure area on October 8 to the southwest of Bermuda. Although it lacked a well-defined center of circulation, the system was already producing gale-force winds. Early on October 10, the low developed a curved band of convection northwest of the center, and it organized into Subtropical Storm Nicole by 06:00 UTC. An approaching mid-level trough turned the system northeastward. Early on October 11, Nicole passed about Template:Convert northwest of Bermuda.<ref name="tcr">Template:Cite report</ref> On the island, Nicole and its precursor dropped Template:Convert of rainfall and produced wind gusts reaching Template:Convert.<ref name="tcr"/><ref name="bws">Template:Cite report</ref> The winds left 1,800 homes and businesses without power, while the unsettled conditions caused delays at the L.F. Wade International Airport.<ref name="royg">Template:Cite news</ref>

After passing Bermuda, Nicole developed an area of convection near the center,<ref name="tcr"/> suggesting the beginning of a transition to a tropical cyclone.<ref name="nicoledisc5">Template:Cite report</ref> However, strong wind shear caused weakening after the storm reached peak winds of Template:Convert, preventing Nicole's transition to a fully tropical cyclone. A larger extratropical storm absorbed Nicole on October 11, while the storm was located south of Nova Scotia.<ref name="tcr"/> In Maine, gusty winds from the remnants of Nicole downed trees and electrical lines, resulting some power outages, especially along or near the coast.<ref name="stormdata10">Template:Cite report</ref> Similarly, 11,300 people were left without electricity in Prince Edward Island and New Brunswick alone after winds uprooted trees and toppled power lines. Significant rainfall was also produced in the region, peaking at about Template:Convert in northeastern Nova Scotia.<ref>Template:Cite report</ref> Template:Clear

Tropical Storm Otto

Template:Infobox tropical cyclone small Template:See also A cold front and a strong upper-level trough interacted, resulting in the development of an extratropical low-pressure area on November 26. After losing frontal characteristics, the system transitioned into Subtropical Storm Otto at 12:00 UTC on November 29, while located about Template:Convert east-southeast of Bermuda. Initially, the storm moved northwestward due to a weakness in a subtropical ridge. Late on November 29, Otto attained its maximum sustained wind speed of Template:Convert. Deep convection formed near the center and the storm began transitioning to a warm core system.<ref name="otcr">Template:Cite report</ref>

The system was re-classified as Tropical Storm Otto at 12:00 UTC on November 30, although it is possible that Otto transitioned to a fully tropical cyclone one day earlier, on November 29.<ref name="otcr"/> Although sea temperatures were relatively cold, Otto did not quickly weaken, because of low wind shear. On December 1, the storm curved southeastward and completed a cyclonic loop later that day. After wind shear began increasing, Otto started weakening and was downgraded to a tropical depression at 12:00 UTC on December 2. At that, Otto reached its minimum barometric pressure of Template:Convert. Early on December 3, the storm degenerated into a remnant low while located about Template:Convert southeast of Bermuda.<ref name="otcr"/> Template:Clear

Storm names

Template:Tropical cyclone naming The following list of names was used for named storms that formed in the North Atlantic in 2004.<ref name="NHOP 04">Template:Cite report</ref> This was the same list used for the 1998 season,<ref name="NHOP 98">Template:Cite report</ref> except for Gaston and Matthew, which replaced Georges and Mitch respectively.<ref name="2003-08 names">Template:Cite report</ref> Storms were named Gaston, Matthew, and Otto for the first time in 2004.

Retirement

Template:See also In the spring of 2005, The World Meteorological Organization retired the names of four destructive and deadly storms from the Atlantic hurricanes name lists: Charley, Frances, Ivan, and Jeanne.<ref>Template:Cite web</ref> They were replaced with Colin, Fiona, Igor, and Julia, for the 2010 season.<ref name="NHOP 10">Template:Cite report</ref> As of Template:Year, the 2004 season is one of four seasons to have four names retired, along with 1955, 1995, and 2017. Only the 2005 season has had moreTemplate:Sndwith five names retired.<ref name="retired">Template:Cite web</ref><ref>Template:Cite web</ref>

Season effects

This is a table of all of the storms that formed in the 2004 Atlantic hurricane season. It includes their name, duration, peak classification and intensities, areas affected, damage, and death totals. Deaths in parentheses are additional and indirect (an example of an indirect death would be a traffic accident), but were still related to that storm. Damage and deaths include totals while the storm was extratropical, a wave, or a low, and all of the damage figures are in 2004 USD.

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See also

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Notes

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References

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