The 2004 Atlantic hurricane season was a very deadly, destructive, and active Atlantic hurricane season, with over 3,200 deaths and more than $61 billion in damage. 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, the storm produced the highest ACE. Ivan generated the second-highest ACE in the Atlantic, only behind 1899 San Ciriaco Hurricane.
The 2005 Atlantic hurricane season was an event in the annual tropical cyclone season in the north Atlantic Ocean. It was the second most active Atlantic hurricane season in recorded history, and the most extreme in the satellite era. Officially, the season began on June 1, 2005 and ended on November 30, 2005. These dates, adopted by convention, historically delimit the period in each year when most tropical systems form. The season's first storm, Tropical Storm Arlene, developed on June 8. The final storm, Tropical Storm Zeta, formed in late December and persisted until January 6, 2006. Zeta is only the second December Atlantic storm in recorded history to survive into January, joining Hurricane Alice in 1955.
Hurricane Dora was one of few tropical cyclones to track across all three north Pacific basins and the first since Hurricane John in 1994. The fourth named storm, third hurricane, and second major hurricane of the 1999 Pacific hurricane season, Dora developed on August 6 from a tropical wave to the south of Mexico. Forming as a tropical depression, the system gradually strengthened and was upgraded to Tropical Storm Dora later that day. Thereafter Dora began heading in a steadily westward direction, before becoming a hurricane on August 8. Amid warm sea surface temperatures and low wind shear, the storm continued to intensify, eventually peaking as a 140 mph (220 km/h) Category 4 hurricane on August 12.
The meteorological history of Hurricane Ivan, the longest tracked tropical cyclone of the 2004 Atlantic hurricane season, lasted from late August through late September. The hurricane developed from a tropical wave that moved off the coast of Africa on August 31. Tracking westward due to a ridge, favorable conditions allowed it to develop into Tropical Depression Nine on September 2 in the deep tropical Atlantic Ocean. The cyclone gradually intensified until September 5, when it underwent rapid deepening and reached Category 4 status on the Saffir-Simpson Hurricane Scale; at the time Ivan was the southernmost major North Atlantic hurricane on record.
The meteorological history of Hurricane Jeanne lasted for about two weeks in September 2004. Hurricane Jeanne was the eleventh tropical cyclone, tenth named storm, seventh hurricane, and sixth major hurricane of the 2004 Atlantic hurricane season. It formed from a tropical wave on September 13 near the Lesser Antilles, and encountered favorable enough conditions to reach tropical storm status. Jeanne strengthened further in the eastern Caribbean, becoming a strong tropical storm and developing an eye before striking Puerto Rico on September 15. Remaining well-organized, it attained hurricane status before hitting the eastern tip of the Dominican Republic on September 16.
Hurricane Andrew lasted from mid to late August 1992. The hurricane developed from a tropical wave that moved off the coast of Africa on August 14. Tracking westward due to a ridge, favorable conditions allowed it to develop into Tropical Depression Three on August 16 in the deep tropical Atlantic Ocean. The cyclone gradually intensified, becoming a tropical storm on August 17. However, wind shear soon impacted the storm, causing significant increases in barometric pressure and nearly destroying its low-level circulation by August 20. Wind shear sharply decreased starting on August 21, and with warm sea surface temperatures, Andrew began rapid deepening, starting on the following day. By August 23, Andrew peaked as a Category 5 hurricane on the Saffir–Simpson hurricane wind scale while approaching The Bahamas.
The 2017 Pacific hurricane season was an above average Pacific hurricane season in terms of named storms, though less active than the previous three, featuring eighteen named storms, nine hurricanes, and four major hurricanes. Despite the considerable amount of activity, most of the storms were weak and short-lived. The season officially started on May 15 in the eastern Pacific Ocean, and on June 1 in the central Pacific; they both ended on November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in the respective regions. However, the formation of tropical cyclones is possible at any time of the year, as illustrated in 2017 by the formation of the season's first named storm, Tropical Storm Adrian, on May 9. At the time, this was the earliest formation of a tropical storm on record in the eastern Pacific basin proper. The season saw near-average activity in terms of accumulated cyclone energy (ACE), in stark contrast to the extremely active seasons in 2014, 2015, and 2016; and for the first time since 2012, no tropical cyclones formed in the Central Pacific basin. However, for the third year in a row, the season featured above-average activity in July, with the ACE value being the fifth highest for the month. Damage across the basin reached $375.28 million (2017 USD), while 45 people were killed by the various storms.
The 2019 Atlantic hurricane season was the fourth consecutive above-average and damaging season dating back to 2016. The season featured eighteen named storms, however, many storms were weak and short-lived, especially towards the end of the season. Six of those named storms achieved hurricane status, while three intensified into major hurricanes. Two storms became Category 5 hurricanes, marking the fourth consecutive season with at least one Category 5 hurricane, the third consecutive season to feature at least one storm making landfall at Category 5 intensity, and the seventh on record to have multiple tropical cyclones reaching Category 5 strength. The season officially began on June 1 and ended on November 30. These dates historically describe the period each year when most tropical cyclones form in the Atlantic basin and are adopted by convention. However, tropical cyclogenesis is possible at any time of the year, as demonstrated by the formation of Subtropical Storm Andrea on May 20, making this the fifth consecutive year in which a tropical or subtropical cyclone developed outside of the official season.
Hurricane Matthew was the first Category 5 Atlantic hurricane since Felix in 2007 and the southernmost Category 5 Atlantic hurricane on record. The system originated from a tropical wave that emerged off the west coast of Africa on September 22, and ultimately dissipated as an extratropical cyclone near Atlantic Canada on October 10. Late on September 29, it began a period of explosive intensification that brought it to Category 5 strength early on October 1. It weakened slightly and remained a Category 4 until its landfalls in Haiti and Cuba, afterwards it traversed through the Bahamas and paralleled the coast of Florida until making landfall in South Carolina as a Category 1 hurricane. Matthew later transitioned into a post-tropical cyclone on October 10.
Hurricane Harvey was the costliest tropical cyclone on record, inflicting roughly $125 billion in damage across the Houston metropolitan area and Southeast Texas. It lasted from mid-August until early September 2017, with many records for rainfall and landfall intensity set during that time. The eighth named storm, third hurricane, and first major hurricane of the 2017 Atlantic hurricane season, Harvey originated from a broad area of low pressure southwest of Cape Verde that was first monitored on August 13. Tracking steadily westward, the disturbance developed strong convection, a well-defined circulation, and sustained tropical storm-force winds, leading to the classification of Tropical Storm Harvey late on August 17. Moderate easterly vertical wind shear kept Harvey weak, as it continued westwards into the Caribbean Sea; despite repeated predictions for gradual intensification by the National Hurricane Center, Harvey eventually opened up into a tropical wave on August 19. The remnants of Harvey continued to move westwards and reached the Yucatán Peninsula on August 22, and were forecast to regenerate into a tropical cyclone after exiting land.
Hurricane Irma was an extremely powerful Cape Verde hurricane that caused extensive damage in the Caribbean and Florida. Lasting from late August to mid-September 2017, the storm was the strongest open-Atlantic tropical cyclone on record and the first Category 5 hurricane to strike the Leeward Islands. Classified as the ninth named storm, fourth hurricane, and second major hurricane of the hyperactive 2017 Atlantic hurricane season, Irma developed from a tropical wave near the Cape Verde Islands on August 30. Favorable conditions allowed the cyclone to become a hurricane on the following day and then rapidly intensify into a major hurricane by September 1 as it moved generally westward across the Atlantic. However, dry air and eyewall replacement cycles disrupted further strengthening, with fluctuations in intensity during the next few days. Irma resumed deepening upon encountering warmer sea surface temperatures, while approaching the Lesser Antilles on September 4. The system reached Category 5 intensity on the following day and peaked with winds of 180 mph (290 km/h) shortly thereafter.
Hurricane Maria was the tenth-most intense Atlantic hurricane on record and caused catastrophic damage in Puerto Rico in late September 2017. Originating from a tropical wave, it developed into a tropical depression on September 16 while situated to the east of the Lesser Antilles. Gradual intensification occurred over the next day or two and it strengthened into a tropical storm, which was named Maria. By late on September 17, Maria had intensified into a hurricane. As it approached the island arc, it underwent explosive intensification on September 18, with the hurricane reaching Category 5 intensity as it made landfall on the island of Dominica early on September 19. Land interaction weakened the storm somewhat, although it was able to quickly recover and later peaked that night with sustained winds of 175 mph (280 km/h) and a pressure of 908 mbar (26.8 inHg). Early the next morning it weakened to a high-end Category 4 hurricane before making landfall in Puerto Rico. Maria weakened significantly due to crossing the island, but was able to strengthen somewhat as it passed close to Hispaniola and The Bahamas on September 21–23. Structural changes in the hurricane as it moved further north and close to the Outer Banks in the United States ultimately caused Maria to weaken quickly. Turning away from the United States as a weakened tropical storm, it became extratropical on September 30, dissipating 3 days later.
Hurricane Hector was a powerful and long-lasting tropical cyclone that traversed the Pacific Ocean during late July and August 2018. Hector was the eighth named storm, fourth hurricane, and third major hurricane of the 2018 Pacific hurricane season. It originated from a disturbance that was located north of South America on July 22. The disturbance tracked westward and entered the eastern Pacific around July 25. It gradually organized over the next several days, becoming a tropical depression at 12:00 UTC on July 31. The system was upgraded into a tropical storm about 12 hours later and received the name Hector. Throughout most of its existence, the cyclone traveled due west or slightly north of west. A favorable environment allowed the fledgling tropical storm to rapidly intensify to its initial peak as a Category 2 hurricane by 18:00 UTC on August 2. Wind shear caused Hector to weaken for a brief period before the storm began to strengthen again. Hector reached Category 3 status by 00:00 UTC on August 4 and went through an eyewall replacement cycle soon after, which caused the intensification to halt. After the replacement cycle, the cyclone continued to organize, developing a well-defined eye surrounded by cold cloud tops.
The meteorological history of Hurricane Florence spanned 22 days from its inception on August 28, 2018, to its dissipation on September 18. Originating from a tropical wave over West Africa, Florence quickly organized upon its emergence over the Atlantic Ocean. Favorable atmospheric conditions enabled it to develop into a tropical depression on August 31 just south of the Cape Verde islands. Intensifying to a tropical storm the following day, Florence embarked on a west-northwest to northwest trajectory over open ocean. Initially being inhibited by increased wind shear and dry air, the small cyclone took advantage of a small area of low shear and warm waters. After achieving hurricane strength early on September 4, Florence underwent an unexpected period of rapid deepening through September 5, culminating with it becoming a Category 4 hurricane on the Saffir-Simpson scale. Thereafter, conditions again became unfavorable and the hurricane quickly diminished to a tropical storm on September 7.
The 2019 Atlantic hurricane season was an event in the annual tropical cyclone season in the north Atlantic Ocean. It was the fourth consecutive above-normal Atlantic hurricane season. The season officially began on June 1, 2019, and ended on November 30, 2019. These dates, adopted by convention, historically describe the period in each year when most tropical systems form. However, storm formation is possible at any time of the year, as demonstrated in 2019 by the formation of the season's first named storm, Subtropical Storm Andrea, on May 20. The final storm of the season, Tropical Storm Sebastien, transitioned to an extratropical cyclone on November 25.
Hurricane Dorian was an extremely powerful and catastrophic Category 5 Atlantic hurricane, which became the most intense tropical cyclone on record to strike The Bahamas, and is tied with the 1935 Labor Day hurricane for the strongest landfall in the Atlantic basin in terms of maximum sustained winds. The 2019 cyclone is regarded as the worst natural disaster in The Bahamas' recorded history. With winds peaking at 185 mph (295 km/h), it was also one of the most powerful hurricanes recorded in the Atlantic Ocean in terms of 1-minute sustained winds, and the strongest since Wilma in 2005. Dorian was the fourth named storm, second hurricane, the first major hurricane, and the first Category 5 hurricane of the 2019 Atlantic hurricane season. Dorian struck the Abaco Islands on September 1 with maximum sustained winds of 185 mph (295 km/h), tying with the 1935 Labor Day hurricane for the highest wind speeds of an Atlantic hurricane ever recorded at landfall. Dorian went on to strike Grand Bahama at similar intensity, stalling just north of the territory with unrelenting winds for at least 24 hours. The resultant damage to these islands was catastrophic; most structures were flattened or swept to sea, and at least 70,000 people were left homeless. After it ravaged through The Bahamas, Dorian proceeded along the coasts of the Southeastern United States and Atlantic Canada, leaving behind considerable damage and economic losses in those regions.
Hurricane Humberto was a large and powerful tropical cyclone that caused extensive wind damage in Bermuda during September 2019. It was the eighth named storm, third hurricane, and second major hurricane – Category 3 or higher on the Saffir–Simpson scale – of the 2019 Atlantic hurricane season. Humberto formed on September 13 from the prolonged interaction of a tropical wave and an upper-level trough, then paralleled the eastern coastline of Florida through September 16 before turning sharply northeastward. A generally favorable environment allowed Humberto to become a hurricane that day, and the storm further strengthened to reach peak intensity as a Category 3 hurricane on September 18. After its center passed within 65 miles (105 km) of Bermuda around 00:00 UTC on September 19, the system encountered stronger wind shear and drier air. Stripped of its deep thunderstorm activity, the system transitioned to a potent extratropical cyclone early on September 20.
Hurricane Olaf was a Category 2 Pacific hurricane that struck the Baja California Peninsula in September 2021. The fifteenth named storm and sixth hurricane of the 2021 Pacific hurricane season, the cyclone formed from an area of low pressure that developed off the southwestern coast of Mexico on September 5, 2021. The disturbance developed within a favorable environment, acquiring more convection and a closed surface circulation. The disturbance developed into Tropical Depression Fifteen-E by 18:00 UTC on September 7. The depression strengthened into a tropical storm and was named Olaf at 12:00 UTC the next day. Olaf quickly strengthened as it moved to the north-northwest, and was upgraded to a hurricane 24 hours after being named. Hurricane Olaf continued to intensify and reached peak intensity while its center was just offshore the southwestern coast of Baja California Sur, with maximum sustained winds of 105 mph (169 km/h) and a minimum barometric pressure of 975 mbar (28.8 inHg). Just after reaching peak intensity, the hurricane made landfall near San José del Cabo. Interaction with the mountainous terrain of the Baja California Peninsula caused Olaf to quickly weaken. It was downgraded to a tropical storm at 12:00 UTC on September 10. The system became devoid of convection later that day and degenerated to a remnant low by 06:00 UTC on September 11.
Hurricane Sam was a powerful and long-lived Cape Verde hurricane that threatened Bermuda, lasting from September 22 through October 7, 2021. It was the fifth longest-lasting intense Atlantic hurricane, as measured by accumulated cyclone energy, since reliable records began in 1966. Sam was the eighteenth named storm, seventh hurricane, and fourth major hurricane of the 2021 Atlantic hurricane season.
Hurricane Nicole was a sprawling late-season Category 1 hurricane in November 2022. The fourteenth named storm and eighth hurricane of the 2022 Atlantic hurricane season, Nicole formed as a subtropical cyclone on November 7, from a non-tropical area of low pressure near the Greater Antilles, and transitioned into a tropical cyclone the next day. Then, taking a path similar to that of Hurricane Dorian three years earlier, Nicole made landfall on November 9, on Great Abaco and on Grand Bahama in The Bahamas, where it strengthened into a Category 1 hurricane. On November 10, it made landfall twice in Florida, south of Vero Beach and then northwest of Cedar Key, after briefly emerging over the Gulf of Mexico. Nicole then weakened to a depression while moving over the Florida Panhandle, and then was absorbed into a mid-latitude trough and cold front over extreme eastern Tennessee the following day.
