Atlantic hurricane season
The Atlantic hurricane season is the period in a year, from June 1 through November 30, when tropical or subtropical cyclones are most likely to form in the North Atlantic Ocean. These dates, adopted by convention, encompass the period in each year when most tropical cyclogenesis occurs in the basin. Even so, subtropical or tropical cyclogenesis is possible at any time of the year, and often does occur.[2]
Worldwide, a season's climatological peak activity takes place in late summer, when the difference between air temperature and sea surface temperatures is the greatest. Peak activity in an Atlantic hurricane season happens from late August through September, with a midpoint on September 10.[3][4]
Atlantic tropical and subtropical cyclones that reach tropical storm intensity are named from a predetermined list. On average, 14 named storms occur each season, with an average of 7 becoming hurricanes and 3 becoming major hurricanes, Category 3 or higher on the Saffir–Simpson scale. The most active season on record was 2020, during which 30 named tropical cyclones formed. Despite this, the 2005 season had more hurricanes, developing a record of 15 such storms. The least active season was 1914, with only one known tropical cyclone developing during that year.[5]
Concept
[edit]
The understanding that Atlantic hurricanes are most commonplace during a certain period of the year has been long recognized. Historical delineations of the Atlantic hurricane season varied but generally covered some part of the estival (summer) and autumnal months.[6] Some early descriptions of the season's bounds theorized that the timing of the full moon or the moon's phases as a whole could be used to more precisely delineate the hurricane season.[7][6] In the second volume of Voyages and Descriptions (published in 1700), English explorer and naturalist William Dampier observed that hurricanes in the Caribbean Sea were expected in July, August, and September.[8] Mariners in the 18th century generally regarded the period from July to the end of October as the "hurricane season" based on the frequency of storms striking the Caribbean islands and the trajectories of ships traversing the Atlantic.[9][7]
The hurricane season was also an important influence on European naval operations within the West Indies, forcing the movement of materiel to be expedited before its onset or delayed until its end.[10][11][12] English admiral Edward Vernon described the "hurricane months" of August and September within the West Indies as a particularly vulnerable time for maritime logistics; Vernon argued that the most optimal time for a fleet to be dispatched from Great Britain to attack Spanish assets in the Americas was August or September, in part because such ships would more likely avoid hurricanes by the time they reached the West Indies.[13] American geographer Jedidiah Morse defined the hurricane season as the months of August, September, and October in his treatise The American Universal Geography.[14] American meteorologist William Charles Redfield defined the hurricane season as lasting from July 15 to October 15, citing the timeframe during which some insurance underwriters raised premiums in response to the increased likelihood of hurricanes.[6][15] Based on a catalog of 355 storms between 1493–1855 in the North Atlantic compiled by M. André Poëy, W. H. Rosser described the months of July, August, September, and October as comprising the "true hurricane season of the West Indies" in his 1876 book The Law of Storms Considered Practically.[16]
Still, the hurricane season will not allow itself to be 'cribbed, cabined and confined' within the limits of three short months, and skips along whenever its blithe fancy takes it, having a way of turning up at the most unexpected seasons...
— Frederick A. Ober, Their Deadly Work, The Evening Star (July 23, 1898)
The concept of the hurricane season took on a more practical significance in forecasting operations as the United States Weather Bureau began to extend its weather prediction efforts and data collection into the tropics. In 1882, the bureau briefly considered an effort to adopt special hurricane signals between July and October 20 to emphasize the danger of such storms during that period, but dropped the effort due to a lack of funding.[17] When the U.S. Weather Bureau built a network of weather observatories in the Caribbean in 1898, these sites telegraphed weather observations at 8 a.m. daily to the bureau's regional headquarters in Havana, Cuba, during the hurricane season; this season was defined as lasting from the beginning of June through October.[18][19][20] By 1907, these stations in the West Indies operated within a hurricane season defined as beginning on June 15 and ending on November 15.[21] The starting date of these regular reports was moved back to June 1 by 1915.[22] In 1917, an increase in funding for the U.S. Weather Bureau's observing networks in the Caribbean region led to these stations reporting twice daily during a hurricane season expanded to cover the June 1 to November 30 period.[23][24] This delineation was maintained when the bureau (in cooperation with United Fruit Company) began to broadcast special weather bulletins for Caribbean shipping during the hurricane season in 1922, providing information on active hurricanes and warnings twice daily.[25]
The basic concept of an official hurricane season began during 1935,[26] when dedicated wire circuits known as hurricane circuits began to be set up along the Gulf and Atlantic coasts,[27] a process completed by 1955.[28] It was originally the time frame when the tropics were monitored routinely for tropical cyclone activity, and was originally defined as from June 15 through October 31.[29] Over the years, the beginning date was shifted back to June 1, while the end date was shifted to November 15,[27] before settling at November 30 by 1965.[30][31] This was when hurricane reconnaissance planes were sent out to fly across the Atlantic and Gulf of Mexico on a routine basis to look for potential tropical cyclones, in the years before the continuous weather satellite era.[29] Since regular satellite surveillance began, hurricane hunter aircraft fly only into storm areas which are first spotted by satellite imagery.[32] The six-month official hurricane season established in 1965 by the National Hurricane Center (NHC) remains the current delineation of the Atlantic hurricane season.[33] These bounds contain over 97 percent of Atlantic tropical cyclone activity. While this definition was chosen in part to make it easier for the public to remember the timing of hurricanes, storms have often formed outside the official seasonal bounds.[34][35] Following several consecutive years of Atlantic tropical cyclones developing before the official June 1 start date, the World Meteorological Organization recommended in 2021 that the NHC assess moving the start date to May 15.[36] In response, the NHC formed a team to develop quantiative criteria to evaluate extending the seasonal bounds.[37][38] The agency's routine tropical weather outlooks, historically issued during the hurricane season beginning on June 1, were instead started on May 15 beginning in 2021.[39]
Operations
[edit]During the hurricane season, the National Hurricane Center routinely issues their Tropical Weather Outlook product, which identifies areas of concern within the tropics which could develop into tropical cyclones. If systems occur outside the defined hurricane season, special Tropical Weather Outlooks will be issued.[40] Routine coordination occurs at 1700 UTC each day between the Weather Prediction Center and National Hurricane Center to identify systems for the pressure maps three to seven days into the future within the tropics, and points for existing tropical cyclones six to seven days into the future.[41] Possible tropical cyclones are depicted with a closed isobar, while systems with less certainty to develop are depicted as "spot lows" with no isobar surrounding them.
HURDAT
[edit]The North Atlantic hurricane database, or HURDAT, is the database for all tropical storms and hurricanes for the Atlantic Ocean, Gulf of Mexico and Caribbean Sea, including those that have made landfall in the United States. The original database of six-hourly positions and intensities was put together in the 1960s in support of the Apollo space program to help provide statistical track forecast guidance. In the intervening years, this database – which is now freely and easily accessible on the Internet from the National Hurricane Center's (NHC) webpage – has been utilized for a wide variety of uses: climatic change studies, seasonal forecasting, risk assessment for county emergency managers, analysis of potential losses for insurance and business interests, intensity forecasting techniques and verification of official and various model predictions of track and intensity.
HURDAT was not designed with all of these uses in mind when it was first put together and not all of them may be appropriate given its original motivation. HURDAT contains numerous systematic as well as some random errors in the database. Additionally, analysis techniques have changed over the years at NHC as their understanding of tropical cyclones has developed, leading to biases in the historical database. Another difficulty in applying the hurricane database to studies concerned with landfalling events is the lack of exact location, time and intensity at hurricane landfall.
Re-analysis project
[edit]HURDAT is regularly updated annually to reflect the previous season's activity. The older portion of the database has been regularly revised since 2001. The first time in 2001 led to the addition of tropical cyclone tracks for the years 1851 to 1885. The second time was in October 2002 when Hurricane Andrew (August 1992) was upgraded to a Category 5. Recent efforts into uncovering undocumented historical hurricanes in the late 19th and 20th centuries by various researchers have greatly increased our knowledge of these past events. Tropical storms from 1851 to 1970 have already been reanalyzed with most recently, re-analysis of tropical storms from 1961 to 1965 being completed and integrated into HURDAT database in November 2019, and re-analysis of tropical storms from 1966 to 1970 being completed and integrated into HURDAT database in January 2022.[42] Possible changes for the years 1971 onward are not yet incorporated into the HURDAT database. Due to these issues, a re-analysis of the Atlantic hurricane database is being attempted that will be completed in three years.
In addition to the groundbreaking work by Partagas Cigars, additional analyses, digitization and quality control of the data was carried out by researchers at the NOAA Hurricane Research Division funded by the NOAA Office of Global Programs.[43]
The National Hurricane Center's Best Track Change Committee has approved changes for a few recent cyclones, such as Hurricane Andrew. Official changes to the Atlantic hurricane database are approved by the National Hurricane Center Best Track Change Committee.
1494–1850 (pre-HURDAT era)
[edit]| Period | Seasons | Individual years |
|---|---|---|
| Pre-19th century | Pre-17th century (pre 1600), 17th century (1600s), 18th century (1700s) | 1780 |
| 1800–1850 | 1800–1809, 1810–1819, 1820–1829, 1830–1839, 1840–1849 | 1842, 1850. |
1851–1899 (within HURDAT data)
[edit]1850s
[edit]| Year | TS | H | MH | ACE | Deaths | Strongest storm | Major landfalling storms | Notes |
|---|---|---|---|---|---|---|---|---|
| 1851 | 6 | 3 | 1 | 36.24 | 24 | 3 "San Agapito" | 3 "San Agapito" | First Atlantic hurricane season to be included in the HURDAT. |
| 1852 | 5 | 5 | 1 | 73.28 | 100+ | 3 "Great Mobile" | 3 "Great Mobile" | One of three seasons in which all known cyclones became hurricanes. |
| 1853 | 8 | 4 | 2 | 76.49 | 40 | 4 Three | Earliest known Category 4 hurricane on the Saffir-Simpson scale. | |
| 1854 | 5 | 3 | 1 | 31.00 | 30+ | 3 "South Carolina" | 3 "South Carolina" | |
| 1855 | 5 | 4 | 1 | 18.12 | Unknown | 3 "Middle Gulf Shore" | 3 "Middle Gulf Shore" | |
| 1856 | 6 | 4 | 2 | 48.94 | 200+ | 4 "Last Island" | 3 "Southeastern States" 4 "Last Island" |
|
| 1857 | 4 | 3 | 0 | 46.84 | 424 | 2 SS Central America Disaster 2 Four |
2 SS Central America Disaster | |
| 1858 | 6 | 6 | 0 | 44.79 | None | 2 Three 2 Six |
2 Hurricane Three | One of three seasons in which all known cyclones became hurricanes. |
| 1859 | 8 | 7 | 1 | 55.73 | Numerous | 3 Six | 1 Hurricane Five 3 Hurricane Six 1 Hurricane Eight |
1860s
[edit]| Year | TS | H | MH | ACE | Deaths | Strongest storm | Major landfalling storms | Notes |
|---|---|---|---|---|---|---|---|---|
| 1860 | 7 | 6 | 1 | 62.06 | 60+ | 3 One | 3 Hurricane One | |
| 1861 | 8 | 6 | 0 | 49.71 | 22+ | 2 One 2 Three |
1 "Key West" 1 "Expedition" |
|
| 1862 | 6 | 3 | 0 | 46.03 | 3 | 2 Two 2 Three |
||
| 1863 | 9 | 5 | 0 | 50.35 | 90 | 2 "Amanda" | 2 "Amanda" | |
| 1864 | 5 | 3 | 0 | 26.55 | None | 1 One 1 Three 1 Five |
||
| 1865 | 7 | 3 | 0 | 49.13 | 326 | 2 Four 2 Seven |
2 Hurricane Four | |
| 1866 | 7 | 6 | 1 | 83.65 | 383 | 4 "Nassau" | 4 "Nassau" | |
| 1867 | 9 | 7 | 1 | 59.97 | 811 | 3 "San Narciso" | 3 "San Narciso" | |
| 1868 | 4 | 3 | 0 | 34.65 | 2 | 2 One 2 Two 2 Four |
||
| 1869 | 10 | 7 | 1 | 51.02 | 38 | 3 New England Gale | 3 New England Gale 2 Saxby Gale |
1870s
[edit]| Year | TS | H | MH | ACE | Deaths | Strongest storm | Major landfalling storms | Notes |
|---|---|---|---|---|---|---|---|---|
| 1870 | 11 | 10 | 2 | 87.80 | 2,052 | 3 Four | 3 "First Key West" 2 "Second Key West" |
|
| 1871 | 8 | 6 | 2 | 88.39 | 30 | 3 Three 3 "Santa Juana" |
3 Hurricane Three 3 "Santa Juana" |
|
| 1872 | 5 | 4 | 0 | 65.38 | Unknown | 2 Two | ||
| 1873 | 5 | 3 | 2 | 69.47 | 626 | 3 "Central Florida" | 3 "Central Florida" | |
| 1874 | 7 | 4 | 0 | 47.05 | Unknown | 2 Seven | ||
| 1875 | 6 | 5 | 1 | 72.48 | 800 | 3 "Indianola" | 3 "Indianola" | |
| 1876 | 5 | 4 | 2 | 56.05 | 19 | 3 "San Felipe" | 3 "San Felipe" 3 "Cuba-South Florida" |
|
| 1877 | 8 | 3 | 1 | 73.36 | 34 | 3 "Florida Panhandle" | 3 "Florida Panhandle" | |
| 1878 | 12 | 10 | 2 | 180.85 | 108 | 4 Seven | 2 Gale of 1878 | First known above-average season (in modern-day terms) |
| 1879 | 8 | 6 | 2 | 63.63 | 47 | 3 "Louisiana" | 3 "Great Beaufort" 3 "Louisiana" |
1880s
[edit]| Year | TS | H | MH | ACE | Deaths | Strongest storm | Major landfalling storms | Notes |
|---|---|---|---|---|---|---|---|---|
| 1880 | 11 | 9 | 2 | 131.08 | 133 | 4 Eight | 4 Hurricane Two | |
| 1881 | 7 | 4 | 0 | 59.25 | 700 | 2 "Georgia" | 2 "Georgia" | |
| 1882 | 6 | 4 | 2 | 59.47 | 6 | 4 "Cuba" | 3 "Pensacola" 4 "Cuba" |
|
| 1883 | 4 | 3 | 2 | 66.70 | 236 | 3 Two | 3 "Bahamas-North Carolina" | |
| 1884 | 4 | 4 | 1 | 72.06 | 8 | 3 Two | ||
| 1885 | 8 | 6 | 0 | 58.30 | 25 | 2 Two | ||
| 1886 | 12 | 10 | 4 | 166.17 | 200+ | 4 "Indianola" | 4 "Indianola" 3 "Cuba" 3 "Texas-Louisiana" |
Seven hurricanes struck the United States, the most during a single year.[44] |
| 1887 | 19 | 11 | 2 | 181.26 | 2 | 3 Seven | Record five off-season storms. | |
| 1888 | 9 | 6 | 2 | 84.95 | 924 | 3 "San Gil" | 3 "Louisiana" 3 "San Gil" |
|
| 1889 | 9 | 6 | 0 | 104.04 | 40 | 2 Six |
1890s
[edit]| Year | TS | H | MH | ACE | Deaths | Strongest storm | Major landfalling storms | Notes |
|---|---|---|---|---|---|---|---|---|
| 1890 | 4 | 2 | 1 | 33.35 | 14 | 3 Three | ||
| 1891 | 10 | 7 | 1 | 116.11 | 700+ | 3 "Martinique" | 3 "Martinique" | |
| 1892 | 9 | 5 | 0 | 115.84 | 16 | 2 Three 2 Five 2 Seven |
||
| 1893 | 12 | 10 | 5 | 231.15 | 4,028 | 4 "Cheniere Caminada" | 3 "San Roque" 3 "New York" 3 "Sea Islands" 3 "Charleston" 4 "Cheniere Caminada" |
Two hurricanes caused more than 2,000 deaths in the United States. Four simultaneous hurricanes on August 22, one of two times on record. |
| 1894 | 7 | 5 | 4 | 135.42 | 200+ | 4 Six | 3 "Florida Panhandle" | |
| 1895 | 6 | 2 | 0 | 68.77 | 56 | 2 Two | ||
| 1896 | 7 | 6 | 2 | 136.08 | 286 | 3 "Cedar Keys" | 3 "San Ramón" 3 "Cedar Keys" |
|
| 1897 | 6 | 3 | 0 | 54.54 | 262 | 2 One | ||
| 1898 | 11 | 5 | 1 | 113.24 | 562 | 4 "Georgia" | 4 "Georgia" | |
| 1899 | 10 | 5 | 2 | 151.03 | 4,167 | 4 "San Ciríaco" | 4 "San Ciríaco" | The San Ciríaco hurricane was the longest-lasting Atlantic hurricane on record |
1900s
[edit]NOTE: In the following tables, all estimates of damage costs are expressed in contemporaneous US dollars (USD).
1900s
[edit]| Year | TS | H | MH | ACE | Deaths | Damage | Strongest storm | Major landfalling storms | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 1900 | 7 | 3 | 2 | 83.35 | 8,000+ | $35.4M | 4 "Galveston" | 4 "Galveston" | The Galveston hurricane was the deadliest disaster in the United States. |
| 1901 | 13 | 6 | 0 | 98.98 | 35-40 | $1M | 2 Seven | 1 "Louisiana" | |
| 1902 | 5 | 3 | 0 | 32.65 | 5 | Unknown | 2 Four | ||
| 1903 | 10 | 7 | 1 | 102.07 | 222 | $18.5M | 3 "Jamaica" | 3 "Jamaica" 1 "Florida" 2 "New Jersey" |
|
| 1904 | 6 | 4 | 0 | 30.35 | 112 | $2.5M | 1 Two | 1 One | |
| 1905 | 5 | 1 | 1 | 28.38 | 8 | Unknown | 3 Four | ||
| 1906 | 11 | 6 | 3 | 162.88 | 381 | $25.4M | 4 Four | 3 "Mississippi" 3 "Florida Keys" |
|
| 1907 | 5 | 0 | 0 | 13.06 | None | Unknown | TS One | One of two seasons with no recorded hurricanes, the other being 1914. | |
| 1908 | 10 | 6 | 1 | 95.11 | 37 | Unknown | 3 Six | Includes the only known March tropical cyclone in the basin. | |
| 1909 | 12 | 6 | 4 | 93.34 | 4,673 | $77.3M | 3 "Grand Isle" | 3 "Velasco" 3 "Monterrey" 3 "Grand Isle" 3 "Florida Keys" 2 "Greater Antilles" |
1910s
[edit]| Year | TS | H | MH | ACE | Deaths | Damage | Strongest storm | Major landfalling storms | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 1910 | 5 | 3 | 1 | 63.90 | 100 | $1.25M | 4 "Cuba" | 4 "Cuba" | |
| 1911 | 6 | 3 | 0 | 34.29 | 27 | $3M | 2 Three | ||
| 1912 | 7 | 4 | 1 | 57.26 | 116 | $1.6M | 3 "Jamaica" | 3 "Jamaica" | |
| 1913 | 6 | 4 | 0 | 35.60 | 5 | $4M | 1 Four | ||
| 1914 | 1 | 0 | 0 | 2.53 | 0 | Unknown | TS One | Least active season on record. One of two seasons with no recorded hurricanes, along with 1907. | |
| 1915 | 6 | 5 | 3 | 130.10 | 675 | $63M | 4 "New Orleans" | 4 "Galveston" 4 "New Orleans" |
Two Category 4 hurricanes made landfall in the United States. |
| 1916 | 15 | 10 | 5 | 144.01 | 31 | $5.9M | 4 "Texas" | 3 "Gulf Coast" 3 "Charleston" 4 "Texas" |
|
| 1917 | 4 | 2 | 2 | 60.67 | 76 | $170,000 | 4 "Nueva Gerona" | 4 "Nueva Gerona" | |
| 1918 | 6 | 4 | 1 | 39.87 | 55 | $5M | 3 "Louisiana" | 3 "Louisiana" | |
| 1919 | 5 | 2 | 1 | 55.04 | 828 | $22M | 4 "Florida Keys" | 4 "Florida Keys" |
1920s
[edit]| Year | TS | H | MH | ACE | Deaths | Damage | Strongest storm | Major landfalling storms | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 1920 | 5 | 4 | 0 | 29.81 | 1 | $1.5M | 2 "Louisiana" | 2 "Louisiana" | |
| 1921 | 7 | 5 | 2 | 86.53 | 6 | $36.5M | 4 "Tampa Bay" | 3 "San Pedro" 4 "Tampa Bay" |
|
| 1922 | 5 | 3 | 1 | 54.52 | 105 | $2.3M | 3 Two | ||
| 1923 | 9 | 4 | 1 | 49.31 | 15 | $1.3M | 3 Five | ||
| 1924 | 11 | 5 | 2 | 100.19 | 179 | Unknown | 5 "Cuba" | 5 "Cuba" | First official Category 5 Atlantic hurricane on the Saffir–Simpson scale. |
| 1925 | 4 | 1 | 0 | 7.25 | 59+ | $19.9M | 1 One | TS "Florida" | |
| 1926 | 11 | 8 | 6 | 229.56 | 1,448 | $247.4M | 4 "Miami" | 4 "Nassau" 3 "Nova Scotia" 3 "Louisiana" 4 "Miami" 4 "Havana–Bermuda" |
|
| 1927 | 8 | 4 | 1 | 56.48 | 184 | Unknown | 3 "Nova Scotia" | 3 "Nova Scotia" | |
| 1928 | 6 | 4 | 1 | 83.48 | 4,289 | $102M | 5 "Okeechobee" | 5 "Okeechobee" | Least active season that featured a category 5 hurricane, tied with 1977.
One of five seasons to have a category 5 as the sole major hurricane of the season. |
| 1929 | 5 | 3 | 1 | 48.07 | 62 | $10.0M | 4 "Bahamas" | 4 "Bahamas" |
1930s
[edit]| Year | TS | H | MH | ACE | Deaths | Damage | Strongest storm | Major landfalling storms | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 1930 | 3 | 2 | 2 | 49.77 | 8,000 | $50M | 4 "San Zenón" | 4 "San Zenón" | The San Zenón hurricane was the fifth deadliest on record. Second least active season in terms of tropical storms. |
| 1931 | 13 | 3 | 1 | 47.84 | 2,502 | $7.5M | 4 "British Honduras" | 4 "British Honduras" | |
| 1932 | 15 | 6 | 4 | 169.66 | 3,315 | $37M | 5 "Cuba" | 4 "Freeport" 5 "Bahamas" 4 "San Ciprián" 5 "Cuba" |
Only season with a Category 5 hurricane in November, which was the longest lasting category 5, at 3.6 days.
First season to have multiple (more than one) Category 5 hurricanes. |
| 1933 | 20 | 11 | 6 | 258.57 | 651 | $86.6M | 5 "Tampico" | 4 "Chesapeake–Potomac" 5 "Cuba–Brownsville" 4 "Treasure Coast" 4 "Outer Banks" 5 "Tampico" |
Fourth most active season on record.
Most Accumulated Cyclone Energy (ACE) in an Atlantic season on record. |
| 1934 | 13 | 7 | 1 | 79.07 | 2,017 | $4.26M | 3 Thirteen | ||
| 1935 | 8 | 5 | 3 | 106.21 | 2,604 | $12.5M | 5 "Labor Day" | 5 "Labor Day" 4 "Cuba" |
Most intense landfalling Atlantic hurricane known to date ("Labor Day"). |
| 1936 | 17 | 7 | 1 | 99.78 | 5 | $1.23M | 3 "Mid-Atlantic" | ||
| 1937 | 11 | 4 | 1 | 65.85 | 0 | Unknown | 3 Six | ||
| 1938 | 9 | 4 | 2 | 77.58 | ~700 | $290.3M | 5 "New England" | 5 "New England" | Earliest-starting season on record (January 3). |
| 1939 | 6 | 3 | 1 | 43.68 | 5 | Unknown | 4 Five |
1940s
[edit]| Year | TS | H | MH | ACE | Deaths | Damage | Strongest storm | Major landfalling storms | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 1940 | 9 | 6 | 0 | 67.79 | 101 | $4.7M | 2 "New England" | 2 "South Carolina" | |
| 1941 | 6 | 4 | 3 | 51.77 | 63 | $10M | 3 "Florida" | 3 "Texas" 4 "Nicaragua" 3 "Florida" |
|
| 1942 | 11 | 4 | 1 | 62.49 | 17 | $30.6M | 3 "Matagorda" | 3 "Matagorda" | |
| 1943 | 10 | 5 | 2 | 94.01 | 19 | $17.2M | 4 Three | 2 "Surprise" | First year of hurricane hunters. |
| 1944 | 14 | 8 | 3 | 104.45 | 1,153 | $202M | 5 "Great Atlantic" | 5 "Great Atlantic" 4 "Cuba–Florida" |
Great Atlantic hurricane was the only Category 5 of the entire decade |
| 1945 | 11 | 5 | 2 | 63.42 | 80 | $80M | 4 "Homestead" | 3 "Texas" 4 "Homestead" |
|
| 1946 | 7 | 3 | 0 | 19.61 | 5 | $5.2M | 2 Four | 2 "Florida" | |
| 1947 | 10 | 5 | 2 | 88.49 | 94 | $145.3M | 4 "Fort Lauderdale" | 4 "Fort Lauderdale" (George) 2 "Cape Sable" (King) |
First year of internal Atlantic tropical cyclone naming.[45] |
| 1948 | 10 | 6 | 4 | 94.98 | 94 | $30.9M | 4 "Florida" 4 "Bermuda-Newfoundland" |
4 "Florida" (Easy) 3 "Miami" (Fox) |
|
| 1949 | 16 | 7 | 3 | 96.45 | 3 | $58.2M | 4 "Florida" | 4 "Florida" 2 "Texas" |
1950s
[edit]| Year | TS | H | MH | ACE | Deaths | Damage | Strongest storm | Retired names | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 1950 | 16 | 11 | 6 | 211.28 | 20 | $37M | 4 Dog | None | First year of external Atlantic tropical cyclone naming
Record-breaking 8 tropical storms in October. |
| 1951 | 12 | 8 | 3 | 126.33 | 257 | $80M | 4 Easy | None | |
| 1952 | 11 | 5 | 2 | 69.08 | 607 | $3.75M | 4 Fox | None | Includes the only known February tropical cyclone in the basin. |
| 1953 | 14 | 7 | 3 | 98.51 | 1 | $6M | 5 Carol | None | First year of female names for storms.[46] One of only 4 seasons to have both a preseason and postseason storm. Carol was one of six Category 5 hurricanes whose name was not retired (Carol was retired in 1954 as a Category 3) |
| 1954 | 16 | 7 | 3 | 110.88 | 1,069 | $752M | 4 Hazel | 3 Carol 3 Edna 4 Hazel |
Includes Alice, one of two storms in the basin to span two calendar years.[47] |
| 1955 | 13 | 9 | 4 | 158.17 | 1,518 | $1.2bn | 5 Janet | 4 Connie 2 Diane 4 Ione 5 Janet |
|
| 1956 | 12 | 4 | 1 | 56.67 | 76 | $67.8M | 3 Betsy | None | |
| 1957 | 8 | 3 | 2 | 78.66 | 513 | $152.5M | 4 Carrie | 3 Audrey | One of only three seasons to feature a major hurricane in June. |
| 1958 | 12 | 7 | 3 | 109.69 | 41 | $12M | 4 Helene | None | |
| 1959 | 14 | 7 | 2 | 77.11 | 59 | $23.3M | 4 Gracie | None | |
| Total | 128 | 68 | 29 | 1096.38 | 4,161 | $2.54bn | Janet | 8 names |
1960s
[edit]| Year | TS | H | MH | ACE | Deaths | Damage | Strongest storm |
Retired names |
Notes |
|---|---|---|---|---|---|---|---|---|---|
| 1960 | 8 | 4 | 2 | 72.90 | 455 | $442.34M | 4 Donna | 4 Donna | |
| 1961 | 12 | 8 | 5 | 188.89 | 345 | $392M | 5 Hattie | 4 Carla 5 Hattie |
Two Category 5 hurricanes. Lowest number of named storms for an extremely active season. Esther was one of six Category 5 hurricanes whose name was not retired |
| 1962 | 7 | 4 | 0 | 50.45 | 39 | >$4.88M | 2 Ella | None | |
| 1963 | 10 | 7 | 3 | 112.09 | 7,225 | $589M | 4 Flora | 4 Flora | Flora was the sixth-deadliest hurricane on record. |
| 1964 | 13 | 7 | 5 | 153.04 | 261 | $605M | 4 Cleo | 4 Cleo 4 Dora 4 Hilda |
|
| 1965 | 10 | 4 | 1 | 86.74 | 76 | $1.45bn | 4 Betsy | 4 Betsy | Betsy became the first Atlantic tropical cyclone to inflict at least $1 billion USD in damages. |
| 1966 | 15 | 7 | 3 | 138.68 | 1,094 | $410M | 5 Inez | 5 Inez | One of only three seasons to feature a major hurricane in June. |
| 1967 | 15 | 6 | 1 | 125.43 | 64 | $217M | 5 Beulah | 5 Beulah | First hurricane season in the modern satellite era. Features the highest number of tropical depressions in a season at the time. One of five seasons to have a category 5 as the sole major hurricane of the season. |
| 1968 | 8 | 5 | 0 | 46.60 | 10 | $10M | 2 Gladys | None | There was one subtropical storm with Category 1 hurricane strength. |
| 1969 | 18 | 12 | 3 | 149.25 | 364 | $1.7bn | 5 Camille | 5 Camille | Tied for the third most hurricanes in a season on record. |
| Total | 116 | 64 | 23 | 1124.09 | 9,933 | $5.82bn | Camille | 11 names |
1970s
[edit]| Year | TS | H | MH | ACE | Deaths | Damage | Strongest storm |
Retired names |
Notes |
|---|---|---|---|---|---|---|---|---|---|
| 1970 | 14 | 7 | 2 | 66.63 | 71 | $454M | 4 Celia | 4 Celia | First season of a 24-year period of decreased activity in the Atlantic (-AMO) Current extent of the reanalysis project as of January 2022[update] |
| 1971 | 13 | 6 | 1 | 96.53 | 45 | $213M | 5 Edith | None | Includes first documented hurricane to cross Central America, Irene.
One of five seasons to have a category 5 as the sole major hurricane of the season. Edith was one of six Category 5 hurricanes whose name was not retired |
| 1972 | 7 | 3 | 0 | 35.61 | 122 | $2.1bn | 2 Betty | 1 Agnes | Includes three subtropical storms. |
| 1973 | 8 | 4 | 1 | 47.85 | 15 | $18M | 3 Ellen | None | |
| 1974 | 11 | 4 | 2 | 68.13 | 8,260+ | $1.97bn | 4 Carmen | 4 Carmen 2 Fifi |
Includes four subtropical storms. Fifi was the fourth-deadliest hurricane on record. |
| 1975 | 9 | 6 | 3 | 76.06 | 80 | $100M | 4 Gladys | 3 Eloise | |
| 1976 | 10 | 6 | 2 | 84.17 | 72 | $100M | 3 Belle | None | Includes two subtropical storms. |
| 1977 | 6 | 5 | 1 | 25.32 | 10 | $10M | 5 Anita | 5 Anita | Features the strongest Atlantic hurricane to strike Mexico.
Least active season to feature a category 5, tied with 1928. One of five seasons to have a category 5 as the sole major hurricane of the season. |
| 1978 | 12 | 5 | 2 | 63.22 | 37 | $45M | 4 Greta | 4 Greta | Includes one off-season subtropical storm. |
| 1979 | 9 | 6 | 2 | 92.92 | 2,118 | $4.3bn | 5 David | 5 David 4 Frederic |
First year for alternating male/female names. Includes one subtropical storm of Category 1 strength. |
| Total | 99 | 51 | 16 | 657 | 10,830+ | $9.31bn | David | 9 names |
1980s
[edit]| Year | TC | TS | H | MH | ACE | Deaths | Damage | Strongest storm |
Retired names |
Notes |
|---|---|---|---|---|---|---|---|---|---|---|
| 1980 | 18 | 11 | 9 | 2 | 148.94 | 256 | $1bn | 5 Allen | 5 Allen | Includes the storm with the highest sustained winds attained so far in the Atlantic. |
| 1981 | 22 | 12 | 7 | 3 | 100.38 | 10 | $45M | 4 Harvey | None | |
| 1982 | 9 | 6 | 2 | 1 | 31.50 | 141 | $100M | 4 Debby | None | |
| 1983 | 7 | 4 | 3 | 1 | 17.40 | 22 | $2.6bn | 3 Alicia | 3 Alicia | Least active hurricane season in the satellite era, in terms of both named storms and ACE
No storms were active in October. |
| 1984 | 20 | 13 | 5 | 1 | 84.30 | 35 | $66M | 4 Diana | None | Latest forming A-named storm on record. |
| 1985 | 14 | 11 | 7 | 3 | 87.98 | 241 | $4.5bn | 4 Gloria | 3 Elena 4 Gloria |
Hurricane Kate struck Florida on November 21, the latest United States hurricane landfall. |
| 1986 | 10 | 6 | 4 | 0 | 35.79 | 70 | $57M | 2 Earl | None | |
| 1987 | 14 | 7 | 3 | 1 | 34.36 | 10 | $90M | 3 Emily | None | |
| 1988 | 19 | 12 | 5 | 3 | 102.99 | 550 | $7bn | 5 Gilbert | 5 Gilbert 4 Joan |
Included the strongest hurricane on record until 2005 First hurricane since 1978 to cross Central America. Last until 1996, and 2022 to be a Pacific-Atlantic crossover. |
| 1989 | 15 | 11 | 7 | 2 | 135.13 | 112 | $10.7bn | 5 Hugo | 5 Hugo | Hugo held the record for costliest U.S. hurricane for 3 years until Andrew. |
| Total | 148 | 93 | 52 | 17 | 778.71 | 1,447 | $26.2bn | Gilbert | 7 names |
1990s
[edit]| Year | TC | TS | H | MH | ACE | Deaths | Damage | Strongest storm |
Retired names |
Notes |
|---|---|---|---|---|---|---|---|---|---|---|
| 1990 | 16 | 14 | 8 | 1 | 96.80 | 116 | $150M | 3 Gustav | 2 Diana 1 Klaus |
No tropical storms or hurricanes made landfall in the United States. |
| 1991 | 12 | 8 | 4 | 2 | 35.54 | 30 | $2.5bn | 4 Claudette | 3 Bob | Featured the Perfect Storm - a deliberately unnamed hurricane that made landfall in Atlantic Canada. |
| 1992 | 10 | 7 | 4 | 1 | 76.22 | 66 | $27bn | 5 Andrew | 5 Andrew | Hurricane Andrew was the costliest U.S. hurricane until 2005.
One of five seasons to have a category 5 as the sole major hurricane of the season. |
| 1993 | 10 | 8 | 4 | 1 | 38.67 | 274 | $271M | 3 Emily | None | No storms were active in October. |
| 1994 | 12 | 7 | 3 | 0 | 32.02 | 1,184 | $1.56bn | 2 Florence | None | Last season of a 24-year period of decreased activity in the Atlantic (-AMO). |
| 1995 | 21 | 19 | 11 | 5 | 227.10 | 115 | $9.3bn | 4 Opal | 4 Luis 3 Marilyn 4 Opal 3 Roxanne |
Tied for fifth most active season on record (with 1887, 2010, 2011 and 2012). First season of an ongoing period of increased activity in the Atlantic (+AMO). |
| 1996 | 13 | 13 | 9 | 6 | 166.18 | 179 | $3.8bn | 4 Edouard | 1 Cesar 3 Fran 4 Hortense |
|
| 1997 | 9 | 8 | 3 | 1 | 40.93 | 11 | $110M | 3 Erika | None | Least active August (0) and September (1) combined, tied with 1914. |
| 1998 | 14 | 14 | 10 | 3 | 181.77 | 12,000+ | $12.2bn | 5 Mitch | 4 Georges 5 Mitch |
Four simultaneous hurricanes on September 26, the first time since 1893. Mitch was the deadliest hurricane in over 200 years. |
| 1999 | 16 | 12 | 8 | 5 | 176.53 | 465 | $5.9bn | 4 Floyd | 4 Floyd 4 Lenny |
Most Category 4 hurricanes on record, later tied by 2005 and 2020. |
| Total | 133 | 110 | 64 | 25 | 1071.75 | 14,440 | $62.7bn | Mitch | 15 names |
2000s
[edit]NOTE: In the following tables, all estimates of damage costs are expressed in contemporaneous US dollars (USD).
2000s
[edit]| Year | TC | TS | H | MH | ACE | Deaths | Damage | Strongest storm |
Retired names | Notes |
|---|---|---|---|---|---|---|---|---|---|---|
| 2000 | 19 | 15 | 8 | 3 | 119.145 | 105 | $1.3bn | 4 Keith | 4 Keith | Features Hurricane Alberto - the longest-traveled hurricane in the Atlantic. |
| 2001 | 17 | 15 | 9 | 4 | 110.32 | 153 | $11.4bn | 4 Michelle | TS Allison 4 Iris 4 Michelle |
Allison was the first Atlantic tropical storm weaker than a hurricane to have its name retired. |
| 2002 | 14 | 12 | 4 | 2 | 67.99 | 50 | $2.5bn | 3 Isidore | 3 Isidore 4 Lili |
Gustav was the first Atlantic storm that was given a name out of the common six-year rotating lists while subtropical. |
| 2003 | 21 | 16 | 7 | 3 | 176.84 | 93 | $6.3bn | 5 Isabel | 4 Fabian 5 Isabel 2 Juan |
Ana formed in April - one of two storms that was given a name to do so. Includes 3 off-season storms. |
| 2004 | 16 | 15 | 9 | 6 | 226.88 | 3,260 | $61.2bn | 5 Ivan | 4 Charley 4 Frances 5 Ivan 3 Jeanne |
Featured Ivan, the southernmost hurricane in the basin (9.5°N). Features 4 hurricanes to make landfall in Florida; Charley, Frances, Ivan and Jeanne. |
| 2005 | 31 | 28 | 15 | 7 | 250.13 | 3,912 | $171.8bn | 5 Wilma | 4 Dennis 5 Katrina 5 Rita 1 Stan 5 Wilma |
Third-costliest hurricane season on record. Holds the records for most hurricanes, major hurricanes, and Category 5 hurricanes. Most retired names. The first year to use the Greek alphabet, later also used in 2020. Includes 1 subtropical storm and 1 subtropical depression. Emily was one of six Category 5 hurricanes whose name was not retired. |
| 2006 | 10 | 10 | 5 | 2 | 78.54 | 14 | $504.4M | 3 Gordon 3 Helene |
None | No storms formed in October. |
| 2007 | 17 | 15 | 6 | 2 | 73.89 | 478 | $3.4bn | 5 Dean | 5 Dean 5 Felix 1 Noel |
First season on record with two hurricanes landfalling at Category 5 intensity (Dean and Felix). |
| 2008 | 17 | 16 | 8 | 5 | 145.72 | 1,073 | $49.4bn | 4 Ike | 4 Gustav 4 Ike 4 Paloma |
Only year on record in which a major hurricane existed in every month from July through November. |
| 2009 | 11 | 9 | 3 | 2 | 52.58 | 9 | $58M | 4 Bill | None | Second-lowest number of hurricanes in the satellite era. |
| Total | 173 | 151 | 74 | 36 | 1302.02 | 9,146 | $307.9bn | Wilma | 24 names |
2010s
[edit]| Year | TC | TS | H | MH | ACE | Deaths | Damage | Strongest storm |
Retired names | Notes |
|---|---|---|---|---|---|---|---|---|---|---|
| 2010 | 21 | 19 | 12 | 5 | 165.48 | 393 | $7.4bn | 4 Igor | 4 Igor 2 Tomas |
Fifth most active season on record (tied with 1887, 1995, 2011 and 2012). |
| 2011 | 20 | 19 | 7 | 4 | 126.30 | 112 | $17.4bn | 4 Ophelia | 3 Irene | Fifth most active season on record (tied with 1887, 1995, 2010 and 2012). |
| 2012 | 19 | 19 | 10 | 2 | 132.63 | 355 | $72.3bn | 3 Sandy | 3 Sandy | Fifth most active season on record (tied with 1887, 1995, 2010 and 2011). |
| 2013 | 15 | 14 | 2 | 0 | 36.12 | 54 | $1.5bn | 1 Humberto | 1 Ingrid | Featured one unnamed subtropical storm in December. First season since 1986 and 1994 with no major hurricanes. |
| 2014 | 9 | 8 | 6 | 2 | 66.73 | 21 | $371.6M | 4 Gonzalo | None | Featured the fewest tropical storms since 1997. |
| 2015 | 12 | 11 | 4 | 2 | 62.69 | 89 | $813.9M | 4 Joaquin | TS Erika 4 Joaquin |
Erika was the second Atlantic tropical storm to have its name retired, following Tropical Storm Allison in 2001. |
| 2016 | 16 | 15 | 7 | 4 | 141.25 | 736 | ≥$17.5bn | 5 Matthew | 5 Matthew 3 Otto |
Alex became the first satellite-era January hurricane. |
| 2017 | 18 | 17 | 10 | 6 | 224.87 | 3,364 | ≥$294.7bn | 5 Maria | 4 Harvey 5 Irma 5 Maria 1 Nate |
Arlene formed in April - one of two storms that was given a name to do so. Costliest tropical cyclone season on record. |
| 2018 | 16 | 15 | 8 | 2 | 132.58 | 172 | ≥$50.5bn | 5 Michael | 4 Florence 5 Michael |
Includes seven storms that were subtropical at one point. |
| 2019 | 20 | 18 | 6 | 3 | 132.20 | 118 | $11.6bn | 5 Dorian | 5 Dorian | Includes two subtropical storms. Lorenzo was one of six Category 5 hurricanes whose name was not retired. |
| Total | 166 | 155 | 72 | 30 | 1220.86 | 5,413 | $474.1bn | Maria | 16 names |
2020s
[edit]| Year | TC | TS | H | MH | ACE | Deaths | Damage | Strongest storm |
Retired names |
Notes |
|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 31 | 30 | 14 | 7 | 180.37 | 432 | >$54.3bn | 4 Iota | 4 Laura 4 Eta 4 Iota |
Most active season in terms of tropical depressions and named storms. Second and final season after 2005 to use the Greek alphabet. |
| 2021 | 21 | 21 | 7 | 4 | 145.55 | 197 | $80.8bn | 4 Sam | 4 Ida | Third most active season on record. |
| 2022 | 16 | 14 | 8 | 2 | 95.1 | 304 | >$117.7bn | 4 Fiona | 4 Fiona 5 Ian |
First season not to have above-average activity since 2015. First season since 1988 and 1996 with more than one Atlantic–Pacific crossover hurricane (Bonnie and Julia). |
| 2023 | 21 | 20 | 7 | 3 | 145.6 | 19 | >$4.1bn | 5 Lee | None | Fourth most active season on record (tied with 1933). Featured one unnamed subtropical storm in January. Lee was one of six Category 5 hurricanes whose name was not retired. |
| 2024 | 18 | 18 | 11 | 5 | 161.6 | 396 | >$191.1bn | 5 Milton | TBD | Featured Beryl, the earliest forming Category 5 hurricane on record in the Atlantic basin. Featured Milton, the fifth most powerful hurricane on record in the Atlantic basin. Featured Oscar, the smallest hurricane recorded in the Atlantic basin. Second costliest Atlantic hurricane season on record. |
| Total | 107 | 103 | 47 | 21 | 728.22 | ≥1,348 | >$448bn | Milton | 6 names |
Number of tropical storms and hurricanes per season
[edit]
A 2011 study analyzing one of the main sources of hurricanes – the African easterly wave (AEW) – found that the change in AEWs is closely linked to increased activity of intense hurricanes in the North Atlantic. The synoptic concurrence of AEWs in driving the dynamics of the Sahel greening also appears to increase tropical cyclogenesis over the North Atlantic.[48]
See also
[edit]- Accumulated cyclone energy
- List of Atlantic hurricane records
- List of environment topics
- Outline of tropical cyclones
- Pacific hurricane season
- Pacific typhoon season
- North Indian Ocean tropical cyclone season
- South-West Indian Ocean tropical cyclone season
- Australian region tropical cyclone season
- South Pacific tropical cyclone season
- South Atlantic tropical cyclone
- Mediterranean tropical-like cyclone
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