Seasonal summary[]
Systems[]
Unnamed hurricane (One)[]
| Category 1 hurricane (SSHWS) | |
|---|---|
  | |
| Duration | March 25 – March 27 |
| Peak intensity | 75 mph (120 km/h) 980 mbar (hPa) |
Main article: March 2024 unnamed hurricane
While the disturbance that would form Tropical Storm Alberto was developing, the NHC identified a previously unknown hurricane in late March, posthumously designating it as 01L. The cyclone originated from a large frontal system, which coalesced into a subtropical depression late on March 25. Amid unusually warm sea-surface temperatures, the depression later intensified to a subtropical storm as it curved northeast and accelerated. At this time, the NHC designated the storm as an invest, citing that the low was non-tropical. However, the NHC remarked that in post-analysis the storm became fully tropical at around 06:00 UTC on March 27. Despite expectations, the storm briefly attained hurricane status while located southwest of the islands of Faial and Pico in the Azores. Shortly after though, the system completed its extratropical transition while speeding off to the northeast. The remnants would cross northern Portugal and Galicia on March 28, before dissipating over the French administrative region of Nouvelle-Aquitaine.
Tropical Storm Alberto[]
| Tropical storm (SSHWS) | |
|---|---|
  | |
| Duration | May 19 – May 22 |
| Peak intensity | 50 mph (80 km/h) 1003 mbar (hPa) |
Main article: Tropical Storm Alberto (2024)
An abnormally early, however quite robust tropical wave emerged off the coast of Senegal late on May 14. The wave quickly encountered record-warm sea surface temperatures for the time of year, allowing for convection to fire despite dry air concerns. Despite the fact that the Main Develipment Region had never produced a tropical cyclone before mid June, the system gradually organized throughout the week. On the morning of May 19, reconnaissance aircraft flew into the system and found a closed low-level circulation in addition to winds just below tropical-storm force. As such, the second tropical depression of the 2024 Atlantic hurricane season was designated at 06:00 UTC on May 19.
Tropical Depression Two began to organize quicker despite moderate wind shear, intensifying into Tropical Storm Alberto that afternoon. This made the tropical storm the earliest ever named system in the Main Development Region. Alberto began to gain latitude slightly as it neared the South American continent, causing it to encounter even more wind shear. Despite unfavorable conditions, however, Tropical Storm Alberto continued to intensify throughout May 20, reaching its peak that afternoon. Finally, as the tropical storm continued to grow closer to Venezuela and Trinidad, wind shear picked up yet again and the system began to weaken. The now-minimal tropical storm made landfall in southern Trinidad at 10:15 UTC on May 21. The system rapidly weakened due to both land interaction and wind shear afterwards, dissipating early the following morning. Alberto inflicted $20 million in monetary losses and took the lives of four, however it remained on the naming lists.
Hurricane Beryl[]
| Category 3 hurricane (SSHWS) | |
|---|---|
  | |
| Duration | June 6 – June 14 |
| Peak intensity | 115 mph (185 km/h) 962 mbar (hPa) |
Main article: Hurricane Beryl (2024)
Hurricane Leslie[]
| Category 5 hurricane (SSHWS) | |
|---|---|
  | |
| Duration | August 15 – August 31 |
| Peak intensity | 175 mph (280 km/h) 917 mbar (hPa) |
Main article: Hurricane Leslie (2024)
Hurricane Milton[]
| Category 1 hurricane (SSHWS) | |
|---|---|
 | |
| Duration | August 22 – August 26 (exited basin) |
| Peak intensity | 75 mph (120 km/h) 989 mbar (hPa) |
Main article: Hurricane Milton (2024)
Hurricane Rafael[]
| Category 5 major hurricane (SSHWS) | |
 | |
| Duration | September 5 – September 18 |
|---|---|
| Peak intensity | 205 mph (335 km/h) (1-min) 877 mbar (hPa) |
Main article: Hurricane Rafael (2024)
Hurricane William[]
| Category 5 major hurricane (SSHWS) | |
 | |
| Duration | September 18 – September 27 |
|---|---|
| Peak intensity | 175 mph (280 km/h) (1-min) 919 mbar (hPa) |
Main article: Hurricane William (2024)
Tropical Storm Gemma[]
| Tropical storm (SSHWS) | |
|---|---|
  | |
| Duration | November 2 – November 22 |
| Peak intensity | 65 mph (105 km/h) 987 mbar (hPa) |
On November 1, an area of low pressure formed from a tropical disturbance located over the southwestern Caribbean Sea, several miles north of Panama. The low rapidly organized despite the National Hurricane Center only predicting a low chance of development, and it was upgraded into Tropical Depression Thirty on November 2. The depression moved slowly north northwestward and battled moderate wind shear as it approached the Central America coast. On November 4, Thirty made landfall in Nicaragua after failing to intensify into a tropical storm. The depression weakened over land and degenerated into a remnant low that same day. The remnant turned northward and maintained a well-defined circulation as it emerged back over the northwestern Caribbean Sea. The remnant curved northeastward under the steering influence of a powerful trough over the southeastern United States and began to show signs of organization once again on November 7. After crossing Cuba, the low had organized substantially and was upgraded into a tropical depression once again. The depression accelerated northeastward while slowly intensifying, passing southeast of the Florida Peninsula and moving over the islands of Grand Bahama and Little Abaco before finally intensifying into a tropical storm and being named Gemma. Gemma quickly intensified under the influence of baroclinic forcing and reached an initial peak intensity with maximum sustained windspeeds of 65 mph and a minimum barometric pressure of 989 millibars on November 9. As the storm passed over decreasing sea surface temperatures, it began extratropical transition, a process which it had completed the following day while curving eastward and passing north of Bermuda. The extratropical low intensified and reached hurricane-force windspeeds on November 10 while continuing eastward across the central Atlantic. The low began a weakening trend on November 11 after turning east southeastward. The low remained on a southwest heading under the guidance of a powerful cyclone to its north. On November 13, the larger cyclone moved further north, leaving the remnant low of Gemma over the central Atlantic, several hundred miles southwest of the Azores. Gemma's remnant turned southeastward and decelerated, moving into more modest conditions which were suitable for redevelopment into a tropical or subtropical storm. Sea surface temperatures of 26 degrees Celsius and only light wind shear allowed Gemma's remnant to obtain subtropical characteristics, and on November 15, the system was upgraded into a subtropical storm.
Gemma immediately turned southward as a weak ridge began building to its north. Sea surface temperatures increased as the storm moved south, allowing the storm to take on tropical characteristics. On November 16, just 24 hours after being designated a subtropical storm, Gemma transitioned into a fully tropical storm. Gemma turned westward briefly before turning north and northwestward on the 26th while slowly intensifying. As the ridge that had been guiding Gemma for the past few days weakened, Gemma turned back toward the north and northeast and completed three-day a loop. The storm reached its peak intensity with winds of 65 mph and a minimum pressure of 987 millibars on November 28 after turning toward the east as it was guided by another extratropical low to its north. Gemma began developing an eye-like feature during this time yet was unable to attain hurricane-force winds due to dry-air entrainment and increasing wind shear late on November 18. The storm turned toward the southeast once again as it was left behind by the extratropical low to its north. Wind shear continued to increase, and sea surface temperatures began decreasing on November 20 as Gemma decelerated once again. The storm turned eastward and then back to the northeast on November 21 as yet another extratropical system approached from the north and passed over the Azores. Gemma weakened into a tropical depression on November 21 as conditions remained unfavorable. The weak system became caught in the inflow of the larger cyclone and began accelerating quickly northeastward on November 22. Later that same day, Gemma degenerated into a small extratropical low as it started merging with the larger system. Twenty-four hours later, on November 23, the remnant of Gemma was completely absorbed into the larger system, several hundred miles west of Portugal. That system then moved over the Iberian Peninsula a few hours later.
Hurricane Heath[]
| Category 4 hurricane (SSHWS) | |
|---|---|
  | |
| Duration | November 8 – November 13 |
| Peak intensity | 150 mph (240 km/h) 936 mbar (hPa) |
Main article: Hurricane Heath (2024)
Hurricane Jacobus[]
| Category 3 hurricane (SSHWS) | |
|---|---|
 | |
| Duration | December 3 – December 8 |
| Peak intensity | 115 mph (185 km/h) 971 mbar (hPa) |
Main article: Hurricane Jacobus (2024)