As of May 2023, there have been 1,708 tropical cyclones of at least tropical storm intensity, 953 at hurricane intensity, and 330 at major hurricane intensity within the Atlantic Ocean since 1851, the first Atlantic hurricane season to be included in the official Atlantic tropical cyclone record. [1] Though a majority of these cyclones have fallen within climatological averages, prevailing atmospheric conditions occasionally lead to anomalous tropical systems which at times reach extremes in statistical record-keeping including in duration and intensity. [2] The scope of this list is limited to tropical cyclone records solely within the Atlantic Ocean and is subdivided by their reason for notability.
Most Atlantic hurricane seasons prior to the weather satellite era include seven or fewer recorded tropical storms or hurricanes. As the usage of satellite data was not available until the mid-1960s, early storm counts are less reliable. Before the advent of the airplane or means of tracking storms, the ones recorded were storms that affected mainly populated areas. An undercount bias of zero to six tropical cyclones per year between 1851 and 1885 and zero to four per year between 1886 and 1910 has been estimated. [3]
With the advent of the satellite came better and more accurate weather tracking. The first satellites sent into space to monitor the weather were known as Television Infrared Observation Satellites (TIROS). In 1961, Hurricane Esther was the first hurricane to be "discovered" through satellite readings. [4] Although this modern invention was now available, the systems were initially not fully active enough to provide daily images of the storms. [5] Data for the North Atlantic region remained sparse as late as 1964 due to a lack of complete satellite coverage. [6]
The most active Atlantic hurricane season on record in terms of total storms took place in 2020, with 30 documented. The storm count for the 2020 season also includes fourteen hurricanes, of which seven strengthened to major hurricane status. On the converse, the least active season on record in terms of total storms took place in 1914. The 1914 season had just one tropical storm and no hurricanes.
Most storms in a year | ||||
---|---|---|---|---|
Year | Tropical storms | Hurricanes | ||
Hurricanes | Major | |||
2020 | 30 * | 14 | 7 | |
2005 | 28 * | 15 | 7 | |
2021 | 21 * | 7 | 4 | |
1933 | 20 | 11 | 6 | |
2023 | 20 * | 7 | 3 | |
1887 | 19 | 11 | 2 | |
1995 | 19 | 11 | 5 | |
2010 | 19 | 12 | 5 | |
2011 | 19 | 7 | 4 | |
2012 | 19 | 10 | 2 | |
* Includes at least one subtropical storm Source: [7] |
Fewest storms in a year | ||||
---|---|---|---|---|
Year | Tropical storms | Hurricanes | ||
Hurricanes | Major | |||
1914 | 1 | 0 | 0 | |
1930 | 3 | 2 | 2 | |
1857 | 4 | 3 | 0 | |
1868 | 4 | 3 | 0 | |
1883 | 4 | 3 | 2 | |
1884 | 4 | 4 | 1 | |
1890 | 4 | 2 | 1 | |
1917 | 4 | 2 | 2 | |
1925 | 4 | 2 | 0 | |
1983 | 4 | 3 | 1 | |
Source: [7] |
Climatologically speaking, approximately 97 percent of tropical cyclones that form in the North Atlantic develop between June 1 and November 30 – dates which delimit the modern-day Atlantic hurricane season. Though the beginning of the annual hurricane season has historically remained the same, the official end of the hurricane season has shifted from its initial date of October 31. Regardless, on average once every few years a tropical cyclone develops outside the limits of the season; [8] as of 2023 there have been 92 tropical cyclones in the off-season, with the most recent being an unnamed subtropical storm in January 2023. The first tropical cyclone of the 1938 Atlantic hurricane season, which formed on January 3, became the earliest forming tropical storm and hurricane after reanalysis concluded on the storm in December 2012. [9] Hurricane Able in 1951 was initially thought to be the earliest forming major hurricane; [nb 1] however, following post-storm analysis, it was determined that Able only reached Category 1 strength, which made Hurricane Alma of 1966 the new record holder, as it became a major hurricane on June 8. [11] Though it developed within the bounds of the Atlantic hurricane season, [8] [11] Hurricane Audrey in 1957 was the earliest developing Category 4 hurricane on record after it reached the intensity on June 27. [12] However, reanalysis [11] of 1956 to 1960 by NOAA downgraded Audrey to a Category 3, making Hurricane Dennis of 2005 the earliest Category 4 on record on July 8, 2005. [13] The earliest-forming Category 5 hurricane, Emily, reached the highest intensity on the Saffir–Simpson hurricane wind scale on July 17, 2005. [14]
Though the official end of the Atlantic hurricane season occurs on November 30, the dates of October 31 and November 15 have also historically marked the official end date for the hurricane season. [8] December, the only month of the year after the hurricane season, has featured the cyclogenesis of fourteen tropical cyclones. [11] The second Hurricane Alice in 1954 was the latest forming tropical storm and hurricane, reaching these intensities on December 30 and 31, respectively. Hurricane Alice and Tropical Storm Zeta were the only two storms to exist in two calendar years – the former from 1954 to 1955 and the latter from 2005 to 2006. [15] No storms have been recorded to exceed Category 1 hurricane intensity in December. [11] In 1999, Hurricane Lenny reached Category 4 intensity on November 17 as it took an unusual west to east track across the Caribbean; its intensity made it the latest developing Category 4 hurricane, though this was well within the bounds of the hurricane season. [16] Based on reanalysis, the devastating "Cuba" hurricane in 1932 reached Category 5 intensity on November 5, making it the latest in any Atlantic hurricane season to reach this intensity. [11] [9] [nb 2]
Earliest and latest forming Atlantic tropical / subtropical cyclones by Saffir–Simpson classification | |||||||
---|---|---|---|---|---|---|---|
Storm classification | Earliest formation | Latest formation | |||||
Season | Storm | Date reached | Season | Storm | Date reached | ||
Tropical depression | 1900 | One [19] | January 17 | 1954 | Alice [11] | December 30 [nb 3] | |
Tropical storm | 1938 | One [11] | January 3 | 1954 | Alice [11] | December 30 [nb 4] | |
Category 1 | 1938 | One [11] | January 4 | 1954 | Alice [11] | December 31 | |
Category 2 | 1908 | One [11] | March 7 | 2016 | Otto [11] | November 24 | |
Category 3 | 1966 | Alma [11] | June 8 | 2016 | Otto [11] | November 24 | |
Category 4 | 2005 | Dennis [20] | July 8 | 1999 | Lenny [11] | November 17 | |
Category 5 | 2005 | Emily [14] [21] | July 17 | 1932 | "Cuba" [17] | November 5 |
The Atlantic hurricane season presently runs from June 1 through November 30 each year, with peak activity occurring between August and October. Specifically, the height of the season is in early to mid-September. [8] Tropical systems that form outside of these months are referred to as "off season", and account for roughly 3% of all storms that form in a given year. [8] All of the records included below are for the most storms that formed in a given month, as the threshold for "fewest" is zero for expected months. Cases where "fewest storms" are unusual include the months when the hurricane season is at its peak.
Number of Atlantic tropical / subtropical storm occurrences by month of naming | |||
---|---|---|---|
Month | |||
Most | Season | ||
January | 1 [22] | 1938, 1951, 1978, 2016, 2023 | |
February | 1 [23] | 1952 [nb 5] | |
March | 1 [24] | 1908 [nb 5] | |
April | 1 [22] | 1992, 2003, 2017 | |
May | 2 [22] | 1887, 2012, 2020 | |
June | 3 [22] | 1886, 1909, 1936, 1966, 1968, 2021, 2023 | |
July | 5 [25] | 2005, 2020 | |
August | 8 [22] | 2004, 2012 | |
September | 10 [26] | 2020 | |
October | 8 [22] | 1950 | |
November | 3 [27] | 1931, 1961, 1966, 2001, 2005, 2020 | |
December | 2 [22] | 1887, 2003 |
Earliest and next earliest forming Atlantic tropical /subtropical storms by storm number | ||||
---|---|---|---|---|
Storm number | Earliest | Next earliest | ||
Name | Date of formation | Name | Date of formation | |
1 | One [11] | January 3, 1938 | One [11] | January 4, 1951 |
2 | Able [11] | May 16, 1951 | Two [11] | May 17, 1887 |
3 | Cristobal [28] | June 2, 2020 | Colin [28] | June 5, 2016 |
4 | Danielle [29] | June 20, 2016 | Cindy [29] | June 23, 2023 [nb 6] |
5 | Elsa [30] | July 1, 2021 | Edouard [31] | July 6, 2020 |
6 | Fay [31] | July 9, 2020 | Franklin | July 21, 2005 |
7 | Gonzalo [32] | July 22, 2020 | Gert [32] | July 24, 2005 |
8 | Hanna [31] | July 24, 2020 | Harvey [31] | August 3, 2005 |
9 | Isaias [31] | July 30, 2020 | Irene [31] | August 7, 2005 |
10 | Josephine [31] | August 13, 2020 | Jose [31] | August 22, 2005 |
11 | Kyle [31] | August 14, 2020 | Katrina [31] | August 24, 2005 |
12 | Laura [31] | August 21, 2020 | Luis [31] | August 29, 1995 |
13 | Marco [33] | August 22, 2020 | Maria [33] | September 2, 2005 [nb 7] |
Lee [33] | September 2, 2011 [nb 8] | |||
14 | Nana [34] | September 1, 2020 | Nate [34] | September 5, 2005 |
15 | Omar [35] | September 1, 2020 | Ophelia [35] | September 7, 2005 [nb 9] |
16 | Paulette [36] | September 7, 2020 | Philippe [36] | September 17, 2005 |
17 | Rene [36] | September 7, 2020 | Rita [36] | September 18, 2005 |
18 | Sally [37] | September 12, 2020 | Sam [38] | September 23, 2021 |
19 | Teddy [39] | September 14, 2020 | Teresa [40] | September 24, 2021 |
20 | Vicky [41] | September 14, 2020 | Victor [42] | September 29, 2021 |
21 | Alpha [43] | September 17, 2020 | Vince | October 9, 2005 |
22 | Wilfred [43] | September 17, 2020 | Wilma | October 17, 2005 |
23 | Beta [44] | September 18, 2020 | Alpha [44] | October 22, 2005 |
24 | Gamma [45] | October 2, 2020 | Beta [45] | October 27, 2005 |
25 | Delta [46] | October 5, 2020 | Gamma [46] | November 15, 2005 |
26 | Epsilon [47] | October 19, 2020 | Delta [47] | November 22, 2005 |
27 | Zeta [48] | October 25, 2020 | Epsilon [49] | November 29, 2005 |
28 | Eta [50] | November 1, 2020 | Zeta [51] | December 30, 2005 |
29 | Theta [52] | November 10, 2020 | Earliest formation by virtue of being the only of that number | |
30 | Iota [53] | November 13, 2020 |
Generally speaking, the intensity of a tropical cyclone is determined by either the storm's maximum sustained winds or lowest barometric pressure. The following table lists the most intense Atlantic hurricanes in terms of their lowest barometric pressure. In terms of wind speed, Allen from 1980 was the strongest Atlantic tropical cyclone on record, with maximum sustained winds of 190 mph (310 km/h). For many years, it was thought that Hurricane Camille also attained this intensity, but this conclusion was changed in 2014. The original measurements of Camille are suspect since wind speed instrumentation used at the time would likely be damaged by winds of such intensity. [54] Nonetheless, their central pressures are low enough to rank them among the strongest recorded Atlantic hurricanes. [11]
Owing to their intensity, the strongest Atlantic hurricanes have all attained Category 5 classification. Hurricane Opal, the most intense Category 4 hurricane recorded, intensified to reach a minimum pressure of 916 mbar (hPa; 27.05 inHg), [55] a pressure typical of Category 5 hurricanes. [56] Nonetheless, the pressure remains too high to list Opal as one of the ten strongest Atlantic tropical cyclones. [11] Currently, Hurricane Wilma is the strongest Atlantic hurricane ever recorded, after reaching an intensity of 882 mbar (hPa; 26.05 inHg) in October 2005; [54] at the time, this also made Wilma the strongest tropical cyclone worldwide outside of the West Pacific, [57] [58] [59] [60] [61] where seven tropical cyclones have been recorded to intensify to lower pressures. [62] However, this was later superseded by Hurricane Patricia in 2015 in the east Pacific, which had a pressure reading of 872 mbar. Preceding Wilma is Hurricane Gilbert, which had also held the record for most intense Atlantic hurricane for 17 years. [63] The 1935 Labor Day hurricane, with a pressure of 892 mbar (hPa; 26.34 inHg), is the third strongest Atlantic hurricane and the strongest documented tropical cyclone prior to 1950. [11] Since the measurements taken during Wilma and Gilbert were documented using dropsonde, this pressure remains the lowest measured over land. [64]
Hurricane Rita is the fourth strongest Atlantic hurricane in terms of barometric pressure and one of three tropical cyclones from 2005 on the list, with the others being Wilma and Katrina at first and seventh, respectively. [11] However, with a barometric pressure of 895 mbar (hPa; 26.43 inHg), Rita is the strongest tropical cyclone ever recorded in the Gulf of Mexico. [65] In between Rita and Katrina is Hurricane Allen. Allen's pressure was measured at 899 mbar. Hurricane Camille is the sixth strongest hurricane on record. Camille is the only storm to have been moved down the list due to post-storm analysis. Camille was originally recognized as the fifth strongest hurricane on record, but was dropped to the seventh strongest in 2014, with an estimated pressure at 905 mbars, tying it with Hurricanes Mitch, and Dean. Camille then was recategorized with a new pressure of 900 mbars. Currently, Mitch and Dean share intensities for the eighth strongest Atlantic hurricane at 905 mbar (hPa; 26.73 inHg). [64] Hurricane Maria is in tenth place for most intense Atlantic tropical cyclone, with a pressure as low as 908 mbar (hPa; 26.81 inHg). [66] In addition, the most intense Atlantic hurricane outside of the Caribbean Sea and Gulf of Mexico is Hurricane Dorian of 2019, with a pressure of 910 mbar (hPa; 26.9 inHg). [67]
Many of the strongest recorded tropical cyclones weakened prior to their eventual landfall or demise. However, four of the storms remained intense enough at landfall to be considered some of the strongest landfalling hurricanes – four of the ten hurricanes on the list constitute four of the top ten most intense Atlantic landfalls in recorded history. The 1935 Labor Day hurricane made landfall at peak intensity, the most intense Atlantic hurricane landfall. [68] Hurricane Camille made landfall in Waveland, Mississippi with a pressure of 900 mbar (hPa; 26.58 inHg), making it the second most intense Atlantic hurricane landfall. [69] Though it weakened slightly before its eventual landfall on the Yucatán Peninsula, Hurricane Gilbert maintained a pressure of 900 mbar (hPa; 26.58 inHg) at landfall, making its landfall the second strongest, tied with Camille. Similarly, Hurricane Dean made landfall on the peninsula, though it did so at peak intensity and with a higher barometric pressure; its landfall marked the fourth strongest in Atlantic hurricane history. [64]
Most intense Atlantic hurricanes | |||||
---|---|---|---|---|---|
Hurricane | Season | By peak pressure | By pressure at landfall | ||
mbar | inHg | mbar | inHg | ||
Wilma | 2005 | 882 | 26.05 | ||
Gilbert | 1988 | 888 | 26.22 | 900 | 26.58 |
"Labor Day" | 1935 | 892 | 26.34 | 892 | 26.34 |
Rita | 2005 | 895 | 26.43 | ||
Allen | 1980 | 899 | 26.55 | ||
Camille | 1969 | 900 | 26.58 | 900 | 26.58 |
Katrina | 2005 | 902 | 26.64 | ||
Mitch | 1998 | 905 | 26.72 | ||
Dean | 2007 | 905 | 26.72 | 905 | 26.72 |
Maria | 2017 | 908 | 26.81 | ||
"Cuba" | 1924 | 910 | 26.87 | ||
Dorian | 2019 | 910 | 26.87 | ||
Janet | 1955 | 914 | 26.99 | ||
Irma | 2017 | 914 | 26.99 | ||
"Cuba" | 1932 | 918 | 27.10 | ||
Michael | 2018 | 919 | 27.14 | ||
Note: Grey shading indicates that the pressure was not a record, only the top ten storms for each category are included here. |
Strongest Atlantic hurricanes | |||||
---|---|---|---|---|---|
Hurricane | Season | By peak sustained wind speed | By wind speed at landfall | ||
mph | km/h | mph | km/h | ||
Allen | 1980 | 190 | 305 | ||
"Labor Day" | 1935 | 185 | 295 | 185 | 295 |
Gilbert | 1988 | 185 | 295 | ||
Dorian | 2019 | 185 | 295 | 185 | 295 |
Wilma | 2005 | 185 | 295 | ||
Mitch | 1998 | 180 | 285 | ||
Rita | 2005 | 180 | 285 | ||
Irma | 2017 | 180 | 285 | 180 | 285 |
"Cuba" | 1932 | 175 | 280 | ||
Janet | 1955 | 175 | 280 | 175 | 280 |
Camille | 1969 | 175 | 280 | 175 | 280 |
Anita | 1977 | 175 | 280 | 175 | 280 |
David | 1979 | 175 | 280 | 175 | 280 |
Andrew | 1992 | 175 | 280 | 165 | 270 |
Katrina | 2005 | 175 | 280 | ||
Dean | 2007 | 175 | 280 | 175 | 280 |
Felix | 2007 | 175 | 280 | 165 | 270 |
Maria | 2017 | 175 | 280 | 165 | 270 |
Note: Grey shading indicates that the wind speed was not a record, only the highest ranking storms for each category are included here. |
Most severe landfalling Atlantic hurricanes in the United States Based on size and intensity for total points on the Hurricane Severity Index [71] | |||||
---|---|---|---|---|---|
Rank | Hurricane | Year | Intensity | Size | Total |
1 | 4 Carla | 1961 | 17 | 25 | 42 |
2 | 4 Betsy | 1965 | 15 | 25 | 40 |
3 | 5 Camille | 1969 | 22 | 14 | 36 |
4 Opal | 1995 | 11 | 25 | 36 | |
5 Katrina | 2005 | 13 | 23 | 36 | |
6 | 3 Audrey | 1957 | 17 | 16 | 33 |
5 Wilma | 2005 | 12 | 21 | 33 | |
8 | 5 Ivan | 2004 | 12 | 20 | 32 |
9 | 4 Ike | 2008 | 10 | 20 | 30 |
10 | 5 Andrew | 1992 | 16 | 11 | 27 |
Most severe landfalling Atlantic hurricanes in the United States Based on size and intensity for total points on the Chicago Mercantile Exchange Hurricane Index [72] | ||||||
---|---|---|---|---|---|---|
Rank | Hurricane | Year | Landfall | Windspeed at/near landfall (operational) | Radius of hurricane–force winds at/near landfall | CMEHI index |
1 | 4 Hugo* | 1989 | South Carolina | 140 mph (220 km/h) | 140 mi (225 km) | 19.3 |
2 | 4 Katrina* | 2005 | Louisiana | 145 mph (230 km/h) | 120 mi (195 km) | 19.0 |
3 | 4 Maria | 2017 | Puerto Rico | 155 mph (250 km/h) | 60 mi (95 km) | 15.8 |
4 | 4 Laura | 2020 | Louisiana | 150 mph (240 km/h) | 60 mi (95 km) | 14.5 |
5 | 3 Fran | 1996 | North Carolina | 115 mph (185 km/h) | 175 mi (280 km) | 14.3 |
6 | 4 Michael | 2018 | Florida | 155 mph (250 km/h) | 45 mi (70 km) | 14.1 |
4 Ian* | 2022 | Florida | 155 mph (250 km/h) | 45 mi (70 km) | 14.1 | |
8 | 4 Ivan | 2004 | Alabama | 130 mph (215 km/h) | 105 mi (170 km) | 13.5 |
4 Ida | 2021 | Louisiana | 150 mph (240 km/h) | 50 mi (80 km) | 13.5 | |
10 | 4 Irma | 2017 | Florida | 130 mph (215 km/h) | 80 mi (130 km) | 11.6 |
Note: * Indicates that the storm made landfall as a hurricane in multiple regions of the U.S., therefore only the highest index is listed |
Costliest Atlantic hurricanes | |||
---|---|---|---|
Rank | Hurricane | Season | Damage [nb 10] |
1 | 5 Katrina | 2005 | $125 billion |
4 Harvey | 2017 | ||
3 | 5 Ian | 2022 | $113 billion |
4 | 5 Maria | 2017 | $91.6 billion |
5 | 5 Irma | 2017 | $77.2 billion |
6 | 4 Ida | 2021 | $75.3 billion |
7 | 3 Sandy | 2012 | $68.7 billion |
8 | 4 Ike | 2008 | $38 billion |
9 | 5 Andrew | 1992 | $27.3 billion |
10 | 5 Ivan | 2004 | $26.1 billion |
Deadliest Atlantic hurricanes | |||
---|---|---|---|
Rank | Hurricane | Season | Fatalities |
1 | ? "Great Hurricane" | 1780 | 22,000–27,501 |
2 | 5 Mitch | 1998 | 11,374+ |
3 | 2 Fifi | 1974 | 8,210–10,000 |
4 | 4 "Galveston" | 1900 | 8,000–12,000 |
5 | 4 Flora | 1963 | 7,193 |
6 | ? "Pointe-à-Pitre" | 1776 | 6,000+ |
7 | 5 "Okeechobee" | 1928 | 4,112+ |
8 | ? "Newfoundland" | 1775 | 4,000–4,163 |
9 | 3 "Monterrey" | 1909 | 4,000 |
10 | 4 "San Ciriaco" | 1899 | 3,855 |
Number of tornadoes spawned [73] | |||
---|---|---|---|
Rank | Count | Name | Year |
1 | 120 | 5 Ivan | 2004 |
2 | 115 | 5 Beulah | 1967 |
3 | 103 [74] | 4 Frances | 2004 |
4 | 101 | 5 Rita | 2005 |
5 | 57 | 5 Katrina | 2005 |
6 | 54 | 4 Harvey | 2017 |
7 | 50 | TS Fay | 2008 |
8 | 49 | 4 Gustav | 2008 |
9 | 47 | 4 Georges | 1998 |
10 | 46 [75] | TS Lee | 2011 |
Miscellaneous records | |||
---|---|---|---|
Record | Value | Name | Season |
Distance traveled | 6,500 miles (10,500 km) [76] | 3 Alberto | 2000 |
Highest forward speed | 69 mph (111 km/h) [11] [77] | TS Six | 1961 |
Largest in diameter | 1,150 miles (1,850 km) [78] | 3 Sandy | 2012 |
Longest duration (non consecutive) | 28 days [11] [79] [80] | 4 "San Ciriaco" | 1899 |
Longest duration (consecutive) | 27.25 days [11] [79] [80] | 2 Ginger | 1971 |
Longest duration (at category 5) | 3.6 days [81] | 5 "Cuba" | 1932 |
Northernmost tropical cyclone formation | 42.0°N; 23.0°W [11] | TS Five | 1952 |
Southernmost tropical cyclone formation | 7.2°N; 23.4°W [11] | 2 Isidore | 1990 |
Easternmost tropical cyclone formation | 11.0°N, 14.0°W [11] | TS Christine | 1973 |
Westernmost tropical cyclone formation | 22.4°N, 97.4°W [11] | TD Eight | 2013 |
The 1966 Atlantic hurricane season saw the Weather Bureau office in Miami, Florida, be designated as the National Hurricane Center (NHC) and assume responsibility of tropical cyclone forecasting in the basin. The season officially began on June 1, and lasted until November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in the Atlantic basin. It was an above-average season in terms of tropical storms, with a total of 15. The first system, Hurricane Alma, developed over eastern Nicaragua on June 4 and became the most recent major hurricane in the month of June. Alma brought severe flooding to Honduras and later to Cuba, but caused relatively minor impact in the Southeastern United States. Alma resulted in 91 deaths and about $210.1 million (1966 USD) in damage.
The 1986 Atlantic hurricane season was a very inactive season that produced 10 depressions, 6 named storms, 4 hurricanes, and no major hurricanes. The season officially began on June 1, 1986, and lasted until November 30, 1986. These dates conventionally delimit the period of each year when most tropical cyclones form in the Atlantic basin. During the 1986 season, the first subtropical depression formed in the first week of June, while the last tropical cyclone dissipated at the end of the third week of November. The 1986 season had lower than average activity because of an ongoing El Niño event, and was the least active season in the North Atlantic since the 1983 Atlantic hurricane season. This was also the first season since 1972 to have no major hurricanes.
The 1957 Atlantic hurricane season featured one of the longest-travelling tropical cyclones in the Atlantic basin, Hurricane Carrie. Nevertheless, the season was generally inactive, with eight tropical storms – two of which went unnamed – and three hurricanes, two of which intensified further to attain major hurricane intensity. The season officially began on June 15 and ended on November 15, though the year's first tropical cyclone developed prior to the start of the season on June 8. The final storm dissipated on October 27, well before the official end of the season. The strongest hurricane of the year was Carrie, which reached the equivalent of a Category 4 hurricane on the Saffir–Simpson hurricane scale on two separate occasions in the open Atlantic; Carrie later caused the sinking of the German ship Pamir southwest of the Azores, resulting in 80 deaths.
The 1942 Atlantic hurricane season was one of seven seasons to feature multiple hurricane landfalls in Texas. The season officially lasted from June 16, 1942, to October 31, 1942. These dates conventionally delimit the period of each year when most tropical cyclones form in the Atlantic basin. A total of 11 tropical storms from 1943 are listed in the Atlantic hurricane database, with two additional tropical depressions. The first system of the year, a tropical depression, developed over the central Gulf of Mexico on June 3, while the last system, the Belize hurricane, dissipated over the Yucatán Peninsula on November 11. After the depression dissipated on June 3, the season remained dormant until the next system developed two months later. In mid-August, a hurricane struck Texas, causing about $790,000 (1942 USD) in damage.
The 1940 Atlantic hurricane season was a generally average period of tropical cyclogenesis in 1940. Though the season had no official bounds, most tropical cyclone activity occurred during August and September. Throughout the year, fourteen tropical cyclones formed, of which nine reached tropical storm intensity; six were hurricanes. None of the hurricanes reached major hurricane intensity. Tropical cyclones that did not approach populated areas or shipping lanes, especially if they were relatively weak and of short duration, may have remained undetected. Because technologies such as satellite monitoring were not available until the 1960s, historical data on tropical cyclones from this period are often not reliable. As a result of a reanalysis project which analyzed the season in 2012, an additional hurricane was added to HURDAT. The year's first tropical storm formed on May 19 off the northern coast of Hispaniola. At the time, this was a rare occurrence, as only four other tropical disturbances were known to have formed prior during this period; since then, reanalysis of previous seasons has concluded that there were more than four tropical cyclones in May before 1940. The season's final system was a tropical disturbance situated in the Greater Antilles, which dissipated on November 8.
The 1929 Atlantic hurricane season was among the least active Atlantic hurricane seasons on record, with only five tropical cyclones forming. Three of them intensified into a hurricane, with one strengthening further into a major hurricane. The first tropical cyclone of the season developed in the Gulf of Mexico on June 27. Becoming a hurricane on June 28, the storm struck Texas, bringing strong winds to a large area. Three fatalities were reported, while damage was conservatively estimated at $675,000 (1929 USD).
The 1920 Atlantic hurricane season featured tropical storms and hurricanes only in the month of September. The first system, a hurricane, developed on September 7 while the last, a tropical depression, transitioned into an extratropical cyclone on October 27. Of note, four of the six cyclones co-existed with another tropical cyclone during the season.
The 1919 Atlantic hurricane season was among the least active hurricane seasons in the Atlantic on record, featuring only five tropical storms. Of those five tropical cyclones, two of them intensified into a hurricane, with one strengthening into a major hurricane Two tropical depressions developed in the month of June, both of which caused negligible damage. A tropical storm in July brought minor damage to Pensacola, Florida, but devastated a fleet of ships. Another two tropical depressions formed in August, the first of which brought rainfall to the Lesser Antilles.
The 1918 Atlantic hurricane season was inactive, with a total of six tropical storms developing, four of which intensified into hurricanes. Two of the season's hurricanes made Landfall in the United States, and one became a major hurricane, which is Category 3 or higher on the modern-day Saffir–Simpson scale. Additionally, there were four suspected tropical depressions, including one that began the season on June 19 and one that ended the season when it dissipated on October 19. The early 20th century lacked modern forecasting and documentation, and thus, the hurricane database from these years may be incomplete. Four previously unknown tropical cyclones were identified using records, including historical weather maps and ship reports, while information on the known storms was amended.
The 1917 Atlantic hurricane season featured nine known tropical cyclones, four of which became tropical storms. The first system appeared on July 6 east of the Windward Islands. After crossing the islands and traversing the Caribbean Sea, the storm struck Honduras, Belize, and Mexico, before dissipating on July 14. After more than three weeks without tropical cyclogenesis, another tropical storm developed west of Bermuda. As the storm brushed eastern New England, four ships sank near Nantucket, causing 41 fatalities. The same cyclone brought damaging winds to Nova Scotia before transitioning into an extratropical cyclone on August 10.
The 1913 Atlantic hurricane season was the third consecutive year with a tropical cyclone developing before June. The first system, a tropical depression, developed on May 5 while the last transitioned into an extratropical cyclone on October 30. Of note, the seventh and eighth cyclones existed simultaneously from August 30 to September 4.
The 1912 Atlantic hurricane season was an average hurricane season that featured the first recorded November major hurricane. There were eleven tropical cyclones, seven of which became tropical storms; four of those strengthened into hurricanes, and one reached major hurricane intensity. The season's first cyclone developed on April 4, while the final dissipated on November 21. The season's most intense and most devastating tropical cyclone was the final storm, known as the Jamaica hurricane. It produced heavy rainfall on Jamaica, leading to at least 100 fatalities and about $1.5 million (1912 USD) in damage. The storm was also blamed for five deaths in Cuba.
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.
An Atlantic hurricane is a tropical cyclone that forms in the Atlantic Ocean, primarily between June and November. The terms hurricane, typhoon, and cyclone all describe the same weather phenomenon. They are rotating, organized systems of clouds and thunderstorms that originate over tropical or subtropical waters and have closed low-level circulation. Hurricane is the term used for such storms that are located in the North Atlantic, central North Pacific, and eastern North Pacific, whereas typhoon is the term used for such storms originating in the Northwest Pacific. The term cyclone is used in the South Pacific and Indian Ocean.
The 2008 Atlantic hurricane season was an event in the annual tropical cyclone season in the north Atlantic Ocean. An above-average Atlantic hurricane season season, it was the first on record to have a major hurricane in every month from July to November.
The 2009 Atlantic hurricane season was an event in the annual tropical cyclone season in the north Atlantic Ocean. It was below-average Atlantic hurricane season with nine named storms, the fewest since the 1997 season. The season officially began on June 1, 2009, and ended on November 30, 2009, dates that conventionally delimit the period of each year when most tropical cyclones develop in the Atlantic basin. The first storm to form was Tropical Depression One on May 28, 2009, while the last storm, Hurricane Ida, dissipated on November 10.
The 2015 Pacific hurricane season is the second-most active Pacific hurricane season on record, with 26 named storms, only behind the 1992 season. A record-tying 16 of those storms became hurricanes, and a record 11 storms further intensified into major hurricanes throughout the season. The Central Pacific, the portion of the Northeast Pacific Ocean between the International Date Line and the 140th meridian west, had its most active year on record, with 16 tropical cyclones forming in or entering the basin. Moreover, the season was the third-most active season in terms of accumulated cyclone energy, amassing a total of 290 units. The season officially started on May 15 in the Eastern Pacific 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 Northeast Pacific basin. However, the formation of tropical cyclones is possible at any time of the year. This was shown when a tropical depression formed on December 31. The above-average activity during the season was attributed in part to the very strong 2014–16 El Niño event.
The 2012 Atlantic hurricane season was an event in the annual hurricane season in the north Atlantic Ocean. For the third year in a row there were 19 named storms. The season officially began on June 1, 2012, and ended on November 30, 2012, dates that conventionally delimit the period of each year when most tropical cyclones develop in the Atlantic basin. Surprisingly, two preseason storms formed: Alberto on May 19, and Beryl on May 26. This was the first such occurrence since the 1951 season. The final storm to dissipate was Sandy, on October 29. Altogether, ten storms became hurricanes, of which two intensified into major hurricanes.
The 2020 Atlantic hurricane season was the most active Atlantic hurricane season on record, in terms of number of systems. It featured a total of 31 tropical or subtropical cyclones, with all but one cyclone becoming a named storm. Of the 30 named storms, 14 developed into hurricanes, and a record-tying seven further intensified into major hurricanes. It was the second and final season to use the Greek letter storm naming system, the first being 2005, the previous record. Of the 30 named storms, 11 of them made landfall in the contiguous United States, breaking the record of nine set in 1916. During the season, 27 tropical storms established a new record for earliest formation date by storm number. This season also featured a record ten tropical cyclones that underwent rapid intensification, tying it with 1995, as well as tying the record for most Category 4 hurricanes in a singular season in the Atlantic Basin. This unprecedented activity was fueled by a La Niña that developed in the summer months of 2020, continuing a stretch of above-average seasonal activity that began in 2016. Despite the record-high activity, this was the first season since 2015 in which no Category 5 hurricane formed.
Hurricane Patricia was the most intense tropical cyclone ever recorded in the Western Hemisphere and the second-most intense worldwide in terms of barometric pressure. It also featured the highest one-minute maximum sustained winds ever recorded in a tropical cyclone. Originating from a sprawling disturbance near the Gulf of Tehuantepec in mid-October 2015, Patricia was first classified a tropical depression on October 20. Initial development was slow, with only modest strengthening within the first day of its classification. The system later became a tropical storm and was named Patricia, the twenty-fourth named storm of the annual hurricane season. Exceptionally favorable environmental conditions fueled explosive intensification on October 22. A well-defined eye developed within an intense central dense overcast and Patricia grew from a tropical storm to a Category 5 hurricane in just 24 hours—a near-record pace. The magnitude of intensification was poorly forecast and both forecast models and meteorologists suffered from record-high prediction errors.